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Working from a galaxy far far away
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Working from a galaxy far far away
16 followers · 17 following

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Achievement: Pair Extraordinairex4Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Pair Extraordinairex4Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault Contributor

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jonathanperis/README.md
> "A Vinganca nunca e plena, mata a alma e a envenena." - Seu Madruga

varjonathan=newDeveloper{Location="Itanhaem, SP, Brazil",Company="Peris Studio",Focus=new[]{"Microservices","Clean Architecture","Performance Engineering"},Languages=new[]{"C#","Go","Rust","Python","TypeScript","C"},Hobbies=new[]{"Game Dev","Load Testing Everything","Proving .NET Is Fast"}};

$ whoami

Software engineer focused on backend systems, benchmarking, and low-level game work. I build services, measure them, and then rebuild them in other languages to compare the results.

I keep the stack centered on .NET, but I also use Go, Rust, Python, TypeScript/ReactLynx, and C/SDL2 for projects that fit those tools better.

$ ls ~/projects --sort=stars

cpnucleo★ 8
Production-grade .NET 9 microservices reference architecture
Clean ArchitectureCQRSDDDgRPCFastEndpointsBlazor WASMNative AOTDockerPostgreSQLOpenTelemetry

blazor-mudblazor-starter★ 1
Blazor Server starter template with MudBlazor, multi-arch Docker, AOT + trimming
MudBlazor 8.3.NET 9Azure deploymentCI/CD

speedy-bird-lynx
Cross-platform side scroller built with ReactLynx and TypeScript
ReactLynxTypeScript2D gamecross-platform

super-mango-editor
Classic 2D side-scrolling platformer in pure C + SDL2, playable in the browser via WebAssembly
32 render layersdelta-time physicsgamepad supportparallax scrollingEmscriptenpixel art

rinha2-back-end-dotnet★ 3
Rinha de Backend challenge -- ASP.NET 9, Native AOT, 60% less RAM than allowed
< 800ms responses250MB RAM ceilingPostgreSQL stored functionsNpgsql multiplexing

rinha2-back-end-go
Rinha de Backend implementation in Go, kept to a compact single-file service at ~190 lines
chi routerpgxsingle-filecompact

rinha2-back-end-python
Rinha de Backend implementation in Python for the same transaction workload
PythonHTTP APIdatabase-backedbenchmarking

rinha2-back-end-rust
Rinha de Backend implementation in Rust, ~140 lines and backed by Actix-web
Actix-webTokioSQLxsingle-file

rinha2-back-end-k6
Shared stress test suite for all Rinha implementations -- k6 + InfluxDB + Grafana dashboards
load testingHTML reportscustom xk6 binary

jonathanperis.github.io
Portfolio site with a dark terminal aesthetic, Konami code easter egg, and a fake terminal
Next.js 16React 19TypeScriptTailwind CSS v4portfolio

$ cat /proc/tech_stack

+-----------------------+--------------------------------------------------+
| Backend | .NET 9, ASP.NET, FastEndpoints, gRPC, EF Core, |
| | Dapper, Native AOT |
| Systems | Go (chi, pgx), Rust (Actix-web, Tokio, SQLx), |
| | C (SDL2, Emscripten/WASM) |
| Frontend | Blazor WASM, React 19, ReactLynx, Next.js 16, |
| | TypeScript, Tailwind CSS, MudBlazor |
| Infrastructure | Docker, Nginx, PostgreSQL, GitHub Actions |
| Observability | OpenTelemetry, Grafana, InfluxDB, k6 |
| Architecture | Clean Architecture, CQRS, DDD, Microservices |
+-----------------------+--------------------------------------------------+

$ cat benchmarks.md

The Rinha de Backend challenge: handle concurrent credit/debit transactions across 2 API instances behind Nginx, all within 550 MB total RAM with every response under 800 ms p99 — same workload across 5 implementations, same PostgreSQL stored procedures, same Nginx config, same k6 stress harness.

ImplLangFrameworkDB driverLOCCINotable
rinha2-back-end-dotnetC#ASP.NET 10 + FastEndpointsNpgsql multiplexing~200CINative AOT, 60% RAM headroom
rinha2-back-end-goGochipgx v5~190CISingle-file service
rinha2-back-end-rustRustActix-web + TokioSQLx~140CISmallest LOC
rinha2-back-end-pythonPythonFastAPI / asyncpgasyncpg~150CISame API contract, compact
rinha2-back-end-k6JS (k6)xk6 + Grafana——CIShared stress harness

All four service repos share a Reusable — Deploy docs to GitHub Pages workflow defined in jonathanperis/.github — every consumer's deploy job is ~10 lines of YAML.

$ neofetch

 jonathan@peris-studio
----------------------
OS: macOS / Linux / Docker
Shell: zsh + dotfiles
Editor: VS Code + JetBrains
Uptime: coding since 2015
Repos: 13 active, 0 abandoned
Packages: NuGet, npm, Cargo, pip
Theme: Dark Terminal Aesthetic
Contact: jperis.silva@gmail.com
Portfolio: https://jonathanperis.github.io/
Twitter: @jperis_silva

Live demo → | Documentation →

github-snake

hint: visit jonathanperis.github.io and try the Konami code

Pinned Loading

  1. cpnucleocpnucleoPublic

    Production-grade .NET 10 microservices reference architecture — Clean Architecture, CQRS, DDD, Docker, and full test coverage

    C# 7 8

  2. super-mango-editorsuper-mango-editorPublic

    Classic 2D side-scrolling platformer built with C and SDL2 — playable in the browser via WebAssembly

    C 1

  3. rinha2-back-end-dotnetrinha2-back-end-dotnetPublic

    High-performance backend for the Rinha de Backend challenge — built with ASP.NET 9, PostgreSQL, Nginx, Native AOT, and Docker

    HTML 3 1

  4. rinha2-back-end-gorinha2-back-end-goPublic

    High-performance backend for the Rinha de Backend challenge — built with Go, PostgreSQL, Nginx, and Docker

    PLpgSQL 1

  5. blazor-mudblazor-starterblazor-mudblazor-starterPublic

    Blazor Server starter template with MudBlazor Material Design components, .NET 9, Docker, and Azure deployment

    HTML 2

  6. speedy-bird-lynxspeedy-bird-lynxPublic

    Speedy Bird — a Flappy Bird clone built with Lynx (ReactLynx + TypeScript). Cross-platform native UI for iOS, Android, and Web from a single codebase.

    TypeScript 1