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whats0n/README.md

Valentyn Dorosh

Frontend Team Lead · Vue · Nuxt · TypeScript

LinkedInKyiv, Ukraine — remote12+ years5+ years leading teams

I build and lead frontends that have to stay fast while a lot of people are looking at them. Twelve years in production, five of them leading teams of 4–6 engineers — gaming platforms, admin dashboards, live content editors, component libraries and the tooling that keeps all of it shipping.


Dependencies

core Vue 2/3 · Nuxt 3/4 · Pinia · Vuex · React · Next.js
language TypeScript · JavaScript (ES6+) · HTML5 · CSS3
styling SCSS/Sass · Stylus · Pug
build Vite · Webpack · oclif
practices architecture · performance · design systems · code review · CI/CD
VueNuxtTypeScriptPiniaReactNext.jsViteWebpackSass

Changelog

[6.0.0] — Kombine · Frontend Team Lead latest

April 2024 → present

Added

  • Frontend architecture, coding standards and the shared component library of a 3-brand iGaming platform — 400k+ registered / 200k+ confirmed players.
  • A frontend team of 4–6 engineers: planning, code review, one-on-ones, mentoring.
  • Competitor teardowns turned into feature proposals that actually made it to the roadmap.

Performance

  • Halved game page load time by redesigning the page's data-loading pipeline.
  • Lifted Lighthouse performance out of the red band (<50) into 50+ across key pages.
  • Cut build time by 20–25%, shortening the feedback loop for the whole team.

Fixed

  • SSR hydration mismatches that only reproduced on specific clients — built a custom logger once Sentry quotas ran short, then safely patched DOM APIs to isolate the root cause in production.

[5.0.0] — Perfection.dev · Senior Frontend Developer

December 2022 → April 2024

Added

  • Admin panel, demo sites and the main client application on Vue / Nuxt + TypeScript, all sharing one design system.
  • An internal CLI tool built with oclif, automating project setup and release workflows.
  • A real-time content and layout designer — complex DOM mutations, non-trivial data structures.

Changed

  • UI consistency and delivery speed across the whole product suite.

[4.0.0] — Wild Tornado · Head of IT / Team Lead

October 2021 → July 2022

Added

  • A cross-functional team — developers, QA and DevOps — under one process.
  • Reusable modules and shared infrastructure that shortened the launch time of new projects.
  • Quality gates: code review, release checklists, testing standards, internal training.

Removed

  • The company shut down its entire IT department. Org-wide, not team-scoped.

Earlier releases — [3.0.0] … [1.0.0]

[3.0.0] — Altium · Team Lead

August 2018 → September 2021

  • Mentoring and code review; responsive cross-browser interfaces for enterprise products in Vue and JavaScript.
  • 3.1.0 — took over the frontend department in 2019: project milestones, technical decisions, team performance.

[2.0.0] — B2B Soft · Senior Frontend Developer contract

April 2017 → May 2019

  • Key contributor to the eHopper POS platform and wireless retail product interfaces — UI/UX improvements and critical fixes in JavaScript and KnockoutJS.

[1.0.0] — Coderiver · Frontend Developer

June 2014 → March 2017

  • Dozens of websites and web interfaces from scratch — from markup to production release.

i18n

uk-UA native
ru native
en B1–B2

metrics

Most of my production work lives in private repositories.


Open to a conversation about architecture, performance budgets or leading a frontend team.

Say hi on LinkedIn

Popular repositories Loading

  1. imageSequences.js imageSequences.jsPublic

    JavaScript 2

  2. ehopper ehopperPublic

    HTML 2 3

  3. repair repairPublic

    HTML 1

  4. DocUa DocUaPublic

    HTML 1 1

  5. lansart lansartPublic

    HTML 1

  6. way-on-screen way-on-screenPublic

    JavaScript 1

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
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10
followers
 · 2
following

Achievements
Achievement: Arctic Code Vault Contributor
Achievements
Achievement: Arctic Code Vault Contributor

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whats0n/README.md
Valentyn Dorosh
Frontend Team Lead · Vue · Nuxt · TypeScript
LinkedInKyiv, Ukraine — remote12+ years5+ years leading teams
I build and lead frontends that have to stay fast while a lot of people are looking at them.
Twelve years in production, five of them leading teams of 4–6 engineers — gaming platforms,
admin dashboards, live content editors, component libraries and the tooling that keeps all of it shipping.

Dependencies
core Vue 2/3 · Nuxt 3/4 · Pinia · Vuex · React · Next.js
language TypeScript · JavaScript (ES6+) · HTML5 · CSS3
styling SCSS/Sass · Stylus · Pug
build Vite · Webpack · oclif
practices architecture · performance · design systems · code review · CI/CD

VueNuxtTypeScriptPiniaReactNext.jsViteWebpackSass

Changelog
[6.0.0] — Kombine · Frontend Team Lead latest
April 2024 → present
Added
  • Frontend architecture, coding standards and the shared component library of a 3-brand iGaming platform — 400k+ registered / 200k+ confirmed players.
  • A frontend team of 4–6 engineers: planning, code review, one-on-ones, mentoring.
  • Competitor teardowns turned into feature proposals that actually made it to the roadmap.
Performance
  • Halved game page load time by redesigning the page's data-loading pipeline.
  • Lifted Lighthouse performance out of the red band (<50) into 50+ across key pages.
  • Cut build time by 20–25%, shortening the feedback loop for the whole team.
Fixed
  • SSR hydration mismatches that only reproduced on specific clients — built a custom logger once Sentry quotas ran short, then safely patched DOM APIs to isolate the root cause in production.

[5.0.0] — Perfection.dev · Senior Frontend Developer
December 2022 → April 2024
Added
  • Admin panel, demo sites and the main client application on Vue / Nuxt + TypeScript, all sharing one design system.
  • An internal CLI tool built with oclif, automating project setup and release workflows.
  • A real-time content and layout designer — complex DOM mutations, non-trivial data structures.
Changed
  • UI consistency and delivery speed across the whole product suite.

[4.0.0] — Wild Tornado · Head of IT / Team Lead
October 2021 → July 2022
Added
  • A cross-functional team — developers, QA and DevOps — under one process.
  • Reusable modules and shared infrastructure that shortened the launch time of new projects.
  • Quality gates: code review, release checklists, testing standards, internal training.
Removed
  • The company shut down its entire IT department. Org-wide, not team-scoped.

Earlier releases — [3.0.0] … [1.0.0]
[3.0.0] — Altium · Team Lead
August 2018 → September 2021
  • Mentoring and code review; responsive cross-browser interfaces for enterprise products in Vue and JavaScript.
  • 3.1.0 — took over the frontend department in 2019: project milestones, technical decisions, team performance.

[2.0.0] — B2B Soft · Senior Frontend Developer contract
April 2017 → May 2019
  • Key contributor to the eHopper POS platform and wireless retail product interfaces — UI/UX improvements and critical fixes in JavaScript and KnockoutJS.

[1.0.0] — Coderiver · Frontend Developer
June 2014 → March 2017
  • Dozens of websites and web interfaces from scratch — from markup to production release.

i18n
uk-UA native
ru native
en B1–B2


metrics
Most of my production work lives in private repositories.

Open to a conversation about architecture, performance budgets or leading a frontend team.
Say hi on LinkedIn

Popular repositories
Loading
  1. 
imageSequences.js
imageSequences.jsPublic
    JavaScript
2

  2. 
ehopper
ehopperPublic
    HTML
2

3

  3. 
repair
repairPublic
    HTML
1

  4. 
DocUa
DocUaPublic
    HTML
1

1

  5. 
lansart
lansartPublic
    HTML
1

  6. 
way-on-screen
way-on-screenPublic
    JavaScript
1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
View whats0n's full-sized avatar
10
followers
 · 2
following

Achievements
Achievement: Arctic Code Vault Contributor
Achievements
Achievement: Arctic Code Vault Contributor

Block or report whats0n

Block user

Prevent this user from interacting with your repositories and sending you notifications.
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whats0n/README.md
Valentyn Dorosh
Frontend Team Lead · Vue · Nuxt · TypeScript
LinkedInKyiv, Ukraine — remote12+ years5+ years leading teams
I build and lead frontends that have to stay fast while a lot of people are looking at them.
Twelve years in production, five of them leading teams of 4–6 engineers — gaming platforms,
admin dashboards, live content editors, component libraries and the tooling that keeps all of it shipping.

Dependencies
core Vue 2/3 · Nuxt 3/4 · Pinia · Vuex · React · Next.js
language TypeScript · JavaScript (ES6+) · HTML5 · CSS3
styling SCSS/Sass · Stylus · Pug
build Vite · Webpack · oclif
practices architecture · performance · design systems · code review · CI/CD

VueNuxtTypeScriptPiniaReactNext.jsViteWebpackSass

Changelog
[6.0.0] — Kombine · Frontend Team Lead latest
April 2024 → present
Added
  • Frontend architecture, coding standards and the shared component library of a 3-brand iGaming platform — 400k+ registered / 200k+ confirmed players.
  • A frontend team of 4–6 engineers: planning, code review, one-on-ones, mentoring.
  • Competitor teardowns turned into feature proposals that actually made it to the roadmap.
Performance
  • Halved game page load time by redesigning the page's data-loading pipeline.
  • Lifted Lighthouse performance out of the red band (<50) into 50+ across key pages.
  • Cut build time by 20–25%, shortening the feedback loop for the whole team.
Fixed
  • SSR hydration mismatches that only reproduced on specific clients — built a custom logger once Sentry quotas ran short, then safely patched DOM APIs to isolate the root cause in production.

[5.0.0] — Perfection.dev · Senior Frontend Developer
December 2022 → April 2024
Added
  • Admin panel, demo sites and the main client application on Vue / Nuxt + TypeScript, all sharing one design system.
  • An internal CLI tool built with oclif, automating project setup and release workflows.
  • A real-time content and layout designer — complex DOM mutations, non-trivial data structures.
Changed
  • UI consistency and delivery speed across the whole product suite.

[4.0.0] — Wild Tornado · Head of IT / Team Lead
October 2021 → July 2022
Added
  • A cross-functional team — developers, QA and DevOps — under one process.
  • Reusable modules and shared infrastructure that shortened the launch time of new projects.
  • Quality gates: code review, release checklists, testing standards, internal training.
Removed
  • The company shut down its entire IT department. Org-wide, not team-scoped.

Earlier releases — [3.0.0] … [1.0.0]
[3.0.0] — Altium · Team Lead
August 2018 → September 2021
  • Mentoring and code review; responsive cross-browser interfaces for enterprise products in Vue and JavaScript.
  • 3.1.0 — took over the frontend department in 2019: project milestones, technical decisions, team performance.

[2.0.0] — B2B Soft · Senior Frontend Developer contract
April 2017 → May 2019
  • Key contributor to the eHopper POS platform and wireless retail product interfaces — UI/UX improvements and critical fixes in JavaScript and KnockoutJS.

[1.0.0] — Coderiver · Frontend Developer
June 2014 → March 2017
  • Dozens of websites and web interfaces from scratch — from markup to production release.

i18n
uk-UA native
ru native
en B1–B2


metrics
Most of my production work lives in private repositories.

Open to a conversation about architecture, performance budgets or leading a frontend team.
Say hi on LinkedIn

Popular repositories
Loading
  1. 
imageSequences.js
imageSequences.jsPublic
    JavaScript
2

  2. 
ehopper
ehopperPublic
    HTML
2

3

  3. 
repair
repairPublic
    HTML
1

  4. 
DocUa
DocUaPublic
    HTML
1

1

  5. 
lansart
lansartPublic
    HTML
1

  6. 
way-on-screen
way-on-screenPublic
    JavaScript
1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
View whats0n's full-sized avatar
10
followers
 · 2
following

Achievements
Achievement: Arctic Code Vault Contributor
Achievements
Achievement: Arctic Code Vault Contributor

Block or report whats0n

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


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Report abuse

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Learn more about reporting abuse.

Report abuse
whats0n/README.md
Valentyn Dorosh
Frontend Team Lead · Vue · Nuxt · TypeScript
LinkedInKyiv, Ukraine — remote12+ years5+ years leading teams
I build and lead frontends that have to stay fast while a lot of people are looking at them.
Twelve years in production, five of them leading teams of 4–6 engineers — gaming platforms,
admin dashboards, live content editors, component libraries and the tooling that keeps all of it shipping.

Dependencies
core Vue 2/3 · Nuxt 3/4 · Pinia · Vuex · React · Next.js
language TypeScript · JavaScript (ES6+) · HTML5 · CSS3
styling SCSS/Sass · Stylus · Pug
build Vite · Webpack · oclif
practices architecture · performance · design systems · code review · CI/CD

VueNuxtTypeScriptPiniaReactNext.jsViteWebpackSass

Changelog
[6.0.0] — Kombine · Frontend Team Lead latest
April 2024 → present
Added
  • Frontend architecture, coding standards and the shared component library of a 3-brand iGaming platform — 400k+ registered / 200k+ confirmed players.
  • A frontend team of 4–6 engineers: planning, code review, one-on-ones, mentoring.
  • Competitor teardowns turned into feature proposals that actually made it to the roadmap.
Performance
  • Halved game page load time by redesigning the page's data-loading pipeline.
  • Lifted Lighthouse performance out of the red band (<50) into 50+ across key pages.
  • Cut build time by 20–25%, shortening the feedback loop for the whole team.
Fixed
  • SSR hydration mismatches that only reproduced on specific clients — built a custom logger once Sentry quotas ran short, then safely patched DOM APIs to isolate the root cause in production.

[5.0.0] — Perfection.dev · Senior Frontend Developer
December 2022 → April 2024
Added
  • Admin panel, demo sites and the main client application on Vue / Nuxt + TypeScript, all sharing one design system.
  • An internal CLI tool built with oclif, automating project setup and release workflows.
  • A real-time content and layout designer — complex DOM mutations, non-trivial data structures.
Changed
  • UI consistency and delivery speed across the whole product suite.

[4.0.0] — Wild Tornado · Head of IT / Team Lead
October 2021 → July 2022
Added
  • A cross-functional team — developers, QA and DevOps — under one process.
  • Reusable modules and shared infrastructure that shortened the launch time of new projects.
  • Quality gates: code review, release checklists, testing standards, internal training.
Removed
  • The company shut down its entire IT department. Org-wide, not team-scoped.

Earlier releases — [3.0.0] … [1.0.0]
[3.0.0] — Altium · Team Lead
August 2018 → September 2021
  • Mentoring and code review; responsive cross-browser interfaces for enterprise products in Vue and JavaScript.
  • 3.1.0 — took over the frontend department in 2019: project milestones, technical decisions, team performance.

[2.0.0] — B2B Soft · Senior Frontend Developer contract
April 2017 → May 2019
  • Key contributor to the eHopper POS platform and wireless retail product interfaces — UI/UX improvements and critical fixes in JavaScript and KnockoutJS.

[1.0.0] — Coderiver · Frontend Developer
June 2014 → March 2017
  • Dozens of websites and web interfaces from scratch — from markup to production release.

i18n
uk-UA native
ru native
en B1–B2


metrics
Most of my production work lives in private repositories.

Open to a conversation about architecture, performance budgets or leading a frontend team.
Say hi on LinkedIn

Popular repositories
Loading
  1. 
imageSequences.js
imageSequences.jsPublic
    JavaScript
2

  2. 
ehopper
ehopperPublic
    HTML
2

3

  3. 
repair
repairPublic
    HTML
1

  4. 
DocUa
DocUaPublic
    HTML
1

1

  5. 
lansart
lansartPublic
    HTML
1

  6. 
way-on-screen
way-on-screenPublic
    JavaScript
1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
View whats0n's full-sized avatar
10
followers
 · 2
following

Achievements
Achievement: Arctic Code Vault Contributor
Achievements
Achievement: Arctic Code Vault Contributor

Block or report whats0n

Block user

Prevent this user from interacting with your repositories and sending you notifications.
Learn more about blocking users.


You must be logged in to block users.


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Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.

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Report abuse
whats0n/README.md
Valentyn Dorosh
Frontend Team Lead · Vue · Nuxt · TypeScript
LinkedInKyiv, Ukraine — remote12+ years5+ years leading teams
I build and lead frontends that have to stay fast while a lot of people are looking at them.
Twelve years in production, five of them leading teams of 4–6 engineers — gaming platforms,
admin dashboards, live content editors, component libraries and the tooling that keeps all of it shipping.

Dependencies
core Vue 2/3 · Nuxt 3/4 · Pinia · Vuex · React · Next.js
language TypeScript · JavaScript (ES6+) · HTML5 · CSS3
styling SCSS/Sass · Stylus · Pug
build Vite · Webpack · oclif
practices architecture · performance · design systems · code review · CI/CD

VueNuxtTypeScriptPiniaReactNext.jsViteWebpackSass

Changelog
[6.0.0] — Kombine · Frontend Team Lead latest
April 2024 → present
Added
  • Frontend architecture, coding standards and the shared component library of a 3-brand iGaming platform — 400k+ registered / 200k+ confirmed players.
  • A frontend team of 4–6 engineers: planning, code review, one-on-ones, mentoring.
  • Competitor teardowns turned into feature proposals that actually made it to the roadmap.
Performance
  • Halved game page load time by redesigning the page's data-loading pipeline.
  • Lifted Lighthouse performance out of the red band (<50) into 50+ across key pages.
  • Cut build time by 20–25%, shortening the feedback loop for the whole team.
Fixed
  • SSR hydration mismatches that only reproduced on specific clients — built a custom logger once Sentry quotas ran short, then safely patched DOM APIs to isolate the root cause in production.

[5.0.0] — Perfection.dev · Senior Frontend Developer
December 2022 → April 2024
Added
  • Admin panel, demo sites and the main client application on Vue / Nuxt + TypeScript, all sharing one design system.
  • An internal CLI tool built with oclif, automating project setup and release workflows.
  • A real-time content and layout designer — complex DOM mutations, non-trivial data structures.
Changed
  • UI consistency and delivery speed across the whole product suite.

[4.0.0] — Wild Tornado · Head of IT / Team Lead
October 2021 → July 2022
Added
  • A cross-functional team — developers, QA and DevOps — under one process.
  • Reusable modules and shared infrastructure that shortened the launch time of new projects.
  • Quality gates: code review, release checklists, testing standards, internal training.
Removed
  • The company shut down its entire IT department. Org-wide, not team-scoped.

Earlier releases — [3.0.0] … [1.0.0]
[3.0.0] — Altium · Team Lead
August 2018 → September 2021
  • Mentoring and code review; responsive cross-browser interfaces for enterprise products in Vue and JavaScript.
  • 3.1.0 — took over the frontend department in 2019: project milestones, technical decisions, team performance.

[2.0.0] — B2B Soft · Senior Frontend Developer contract
April 2017 → May 2019
  • Key contributor to the eHopper POS platform and wireless retail product interfaces — UI/UX improvements and critical fixes in JavaScript and KnockoutJS.

[1.0.0] — Coderiver · Frontend Developer
June 2014 → March 2017
  • Dozens of websites and web interfaces from scratch — from markup to production release.

i18n
uk-UA native
ru native
en B1–B2


metrics
Most of my production work lives in private repositories.

Open to a conversation about architecture, performance budgets or leading a frontend team.
Say hi on LinkedIn

Popular repositories
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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Achievement: Arctic Code Vault Contributor

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whats0n/README.md
Valentyn Dorosh
Frontend Team Lead · Vue · Nuxt · TypeScript
LinkedInKyiv, Ukraine — remote12+ years5+ years leading teams
I build and lead frontends that have to stay fast while a lot of people are looking at them.
Twelve years in production, five of them leading teams of 4–6 engineers — gaming platforms,
admin dashboards, live content editors, component libraries and the tooling that keeps all of it shipping.

Dependencies
core Vue 2/3 · Nuxt 3/4 · Pinia · Vuex · React · Next.js
language TypeScript · JavaScript (ES6+) · HTML5 · CSS3
styling SCSS/Sass · Stylus · Pug
build Vite · Webpack · oclif
practices architecture · performance · design systems · code review · CI/CD

VueNuxtTypeScriptPiniaReactNext.jsViteWebpackSass

Changelog
[6.0.0] — Kombine · Frontend Team Lead latest
April 2024 → present
Added
  • Frontend architecture, coding standards and the shared component library of a 3-brand iGaming platform — 400k+ registered / 200k+ confirmed players.
  • A frontend team of 4–6 engineers: planning, code review, one-on-ones, mentoring.
  • Competitor teardowns turned into feature proposals that actually made it to the roadmap.
Performance
  • Halved game page load time by redesigning the page's data-loading pipeline.
  • Lifted Lighthouse performance out of the red band (<50) into 50+ across key pages.
  • Cut build time by 20–25%, shortening the feedback loop for the whole team.
Fixed
  • SSR hydration mismatches that only reproduced on specific clients — built a custom logger once Sentry quotas ran short, then safely patched DOM APIs to isolate the root cause in production.

[5.0.0] — Perfection.dev · Senior Frontend Developer
December 2022 → April 2024
Added
  • Admin panel, demo sites and the main client application on Vue / Nuxt + TypeScript, all sharing one design system.
  • An internal CLI tool built with oclif, automating project setup and release workflows.
  • A real-time content and layout designer — complex DOM mutations, non-trivial data structures.
Changed
  • UI consistency and delivery speed across the whole product suite.

[4.0.0] — Wild Tornado · Head of IT / Team Lead
October 2021 → July 2022
Added
  • A cross-functional team — developers, QA and DevOps — under one process.
  • Reusable modules and shared infrastructure that shortened the launch time of new projects.
  • Quality gates: code review, release checklists, testing standards, internal training.
Removed
  • The company shut down its entire IT department. Org-wide, not team-scoped.

Earlier releases — [3.0.0] … [1.0.0]
[3.0.0] — Altium · Team Lead
August 2018 → September 2021
  • Mentoring and code review; responsive cross-browser interfaces for enterprise products in Vue and JavaScript.
  • 3.1.0 — took over the frontend department in 2019: project milestones, technical decisions, team performance.

[2.0.0] — B2B Soft · Senior Frontend Developer contract
April 2017 → May 2019
  • Key contributor to the eHopper POS platform and wireless retail product interfaces — UI/UX improvements and critical fixes in JavaScript and KnockoutJS.

[1.0.0] — Coderiver · Frontend Developer
June 2014 → March 2017
  • Dozens of websites and web interfaces from scratch — from markup to production release.

i18n
uk-UA native
ru native
en B1–B2


metrics
Most of my production work lives in private repositories.

Open to a conversation about architecture, performance budgets or leading a frontend team.
Say hi on LinkedIn

Popular repositories
Loading
  1. 
imageSequences.js
imageSequences.jsPublic
    JavaScript
2

  2. 
ehopper
ehopperPublic
    HTML
2

3

  3. 
repair
repairPublic
    HTML
1

  4. 
DocUa
DocUaPublic
    HTML
1

1

  5. 
lansart
lansartPublic
    HTML
1

  6. 
way-on-screen
way-on-screenPublic
    JavaScript
1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
View whats0n's full-sized avatar
10
followers
 · 2
following

Achievements
Achievement: Arctic Code Vault Contributor
Achievements
Achievement: Arctic Code Vault Contributor

Block or report whats0n

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Prevent this user from interacting with your repositories and sending you notifications.
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whats0n/README.md
Valentyn Dorosh
Frontend Team Lead · Vue · Nuxt · TypeScript
LinkedInKyiv, Ukraine — remote12+ years5+ years leading teams
I build and lead frontends that have to stay fast while a lot of people are looking at them.
Twelve years in production, five of them leading teams of 4–6 engineers — gaming platforms,
admin dashboards, live content editors, component libraries and the tooling that keeps all of it shipping.

Dependencies
core Vue 2/3 · Nuxt 3/4 · Pinia · Vuex · React · Next.js
language TypeScript · JavaScript (ES6+) · HTML5 · CSS3
styling SCSS/Sass · Stylus · Pug
build Vite · Webpack · oclif
practices architecture · performance · design systems · code review · CI/CD

VueNuxtTypeScriptPiniaReactNext.jsViteWebpackSass

Changelog
[6.0.0] — Kombine · Frontend Team Lead latest
April 2024 → present
Added
  • Frontend architecture, coding standards and the shared component library of a 3-brand iGaming platform — 400k+ registered / 200k+ confirmed players.
  • A frontend team of 4–6 engineers: planning, code review, one-on-ones, mentoring.
  • Competitor teardowns turned into feature proposals that actually made it to the roadmap.
Performance
  • Halved game page load time by redesigning the page's data-loading pipeline.
  • Lifted Lighthouse performance out of the red band (<50) into 50+ across key pages.
  • Cut build time by 20–25%, shortening the feedback loop for the whole team.
Fixed
  • SSR hydration mismatches that only reproduced on specific clients — built a custom logger once Sentry quotas ran short, then safely patched DOM APIs to isolate the root cause in production.

[5.0.0] — Perfection.dev · Senior Frontend Developer
December 2022 → April 2024
Added
  • Admin panel, demo sites and the main client application on Vue / Nuxt + TypeScript, all sharing one design system.
  • An internal CLI tool built with oclif, automating project setup and release workflows.
  • A real-time content and layout designer — complex DOM mutations, non-trivial data structures.
Changed
  • UI consistency and delivery speed across the whole product suite.

[4.0.0] — Wild Tornado · Head of IT / Team Lead
October 2021 → July 2022
Added
  • A cross-functional team — developers, QA and DevOps — under one process.
  • Reusable modules and shared infrastructure that shortened the launch time of new projects.
  • Quality gates: code review, release checklists, testing standards, internal training.
Removed
  • The company shut down its entire IT department. Org-wide, not team-scoped.

Earlier releases — [3.0.0] … [1.0.0]
[3.0.0] — Altium · Team Lead
August 2018 → September 2021
  • Mentoring and code review; responsive cross-browser interfaces for enterprise products in Vue and JavaScript.
  • 3.1.0 — took over the frontend department in 2019: project milestones, technical decisions, team performance.

[2.0.0] — B2B Soft · Senior Frontend Developer contract
April 2017 → May 2019
  • Key contributor to the eHopper POS platform and wireless retail product interfaces — UI/UX improvements and critical fixes in JavaScript and KnockoutJS.

[1.0.0] — Coderiver · Frontend Developer
June 2014 → March 2017
  • Dozens of websites and web interfaces from scratch — from markup to production release.

i18n
uk-UA native
ru native
en B1–B2


metrics
Most of my production work lives in private repositories.

Open to a conversation about architecture, performance budgets or leading a frontend team.
Say hi on LinkedIn

Popular repositories
Loading
  1. 
imageSequences.js
imageSequences.jsPublic
    JavaScript
2

  2. 
ehopper
ehopperPublic
    HTML
2

3

  3. 
repair
repairPublic
    HTML
1

  4. 
DocUa
DocUaPublic
    HTML
1

1

  5. 
lansart
lansartPublic
    HTML
1

  6. 
way-on-screen
way-on-screenPublic
    JavaScript
1


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
View whats0n's full-sized avatar
10
followers
 · 2
following

Achievements
Achievement: Arctic Code Vault Contributor
Achievements
Achievement: Arctic Code Vault Contributor

Block or report whats0n

Block user

Prevent this user from interacting with your repositories and sending you notifications.
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whats0n/README.md
Valentyn Dorosh
Frontend Team Lead · Vue · Nuxt · TypeScript
LinkedInKyiv, Ukraine — remote12+ years5+ years leading teams
I build and lead frontends that have to stay fast while a lot of people are looking at them.
Twelve years in production, five of them leading teams of 4–6 engineers — gaming platforms,
admin dashboards, live content editors, component libraries and the tooling that keeps all of it shipping.

Dependencies
core Vue 2/3 · Nuxt 3/4 · Pinia · Vuex · React · Next.js
language TypeScript · JavaScript (ES6+) · HTML5 · CSS3
styling SCSS/Sass · Stylus · Pug
build Vite · Webpack · oclif
practices architecture · performance · design systems · code review · CI/CD

VueNuxtTypeScriptPiniaReactNext.jsViteWebpackSass

Changelog
[6.0.0] — Kombine · Frontend Team Lead latest
April 2024 → present
Added
  • Frontend architecture, coding standards and the shared component library of a 3-brand iGaming platform — 400k+ registered / 200k+ confirmed players.
  • A frontend team of 4–6 engineers: planning, code review, one-on-ones, mentoring.
  • Competitor teardowns turned into feature proposals that actually made it to the roadmap.
Performance
  • Halved game page load time by redesigning the page's data-loading pipeline.
  • Lifted Lighthouse performance out of the red band (<50) into 50+ across key pages.
  • Cut build time by 20–25%, shortening the feedback loop for the whole team.
Fixed
  • SSR hydration mismatches that only reproduced on specific clients — built a custom logger once Sentry quotas ran short, then safely patched DOM APIs to isolate the root cause in production.

[5.0.0] — Perfection.dev · Senior Frontend Developer
December 2022 → April 2024
Added
  • Admin panel, demo sites and the main client application on Vue / Nuxt + TypeScript, all sharing one design system.
  • An internal CLI tool built with oclif, automating project setup and release workflows.
  • A real-time content and layout designer — complex DOM mutations, non-trivial data structures.
Changed
  • UI consistency and delivery speed across the whole product suite.

[4.0.0] — Wild Tornado · Head of IT / Team Lead
October 2021 → July 2022
Added
  • A cross-functional team — developers, QA and DevOps — under one process.
  • Reusable modules and shared infrastructure that shortened the launch time of new projects.
  • Quality gates: code review, release checklists, testing standards, internal training.
Removed
  • The company shut down its entire IT department. Org-wide, not team-scoped.

Earlier releases — [3.0.0] … [1.0.0]
[3.0.0] — Altium · Team Lead
August 2018 → September 2021
  • Mentoring and code review; responsive cross-browser interfaces for enterprise products in Vue and JavaScript.
  • 3.1.0 — took over the frontend department in 2019: project milestones, technical decisions, team performance.

[2.0.0] — B2B Soft · Senior Frontend Developer contract
April 2017 → May 2019
  • Key contributor to the eHopper POS platform and wireless retail product interfaces — UI/UX improvements and critical fixes in JavaScript and KnockoutJS.

[1.0.0] — Coderiver · Frontend Developer
June 2014 → March 2017
  • Dozens of websites and web interfaces from scratch — from markup to production release.

i18n
uk-UA native
ru native
en B1–B2


metrics
Most of my production work lives in private repositories.

Open to a conversation about architecture, performance budgets or leading a frontend team.
Say hi on LinkedIn

Popular repositories
Loading
  1. 
imageSequences.js
imageSequences.jsPublic
    JavaScript
2

  2. 
ehopper
ehopperPublic
    HTML
2

3

  3. 
repair
repairPublic
    HTML
1

  4. 
DocUa
DocUaPublic
    HTML
1

1

  5. 
lansart
lansartPublic
    HTML
1

  6. 
way-on-screen
way-on-screenPublic
    JavaScript
1