.NET engineer, 14 years in production software. I build headless CMS, event-driven backends, and developer tooling.
Everything below is open source and self-hostable, under @BaryoDev. No paid tier, no seat cap, no metered anything.
Merged fixes in libraries I run in production. Each was found by using the thing, not by browsing for issues.
| Project | What was wrong | |
|---|---|---|
| umbraco/Umbraco-CMS | ★5.2k | Instances sharing a database failed each other's requests registering the same OpenIddict application. #23599, #23727 |
| testcontainers/testcontainers-dotnet | ★4.4k | MongoDb replica-set init was not idempotent, so a reused container hung against a one-hour timeout. #1731, #1735 |
| JasperFx/marten | ★3.4k | HardDeleteWhere could not remove already soft-deleted rows, and returned cleanly either way. #5215, #5202, #5240 |
upstream-fixes holds a runnable reproduction for each, against published NuGet packages, so you can watch the bug appear on one version and disappear on the next rather than take my word for it.
Open-source headless CMS for .NET. Event-sourced on Marten and PostgreSQL, multi-tenant, user-defined content schemas, opt-in modules, an event-triggered workflow engine, and a Next.js admin UI.
115 endpoints, 13 modules, 594 tests against real PostgreSQL and MinIO through Testcontainers. MPL-2.0, and every module is included rather than sold separately.
Live at playground.baryo.dev/barakocms. Typed client:barako-client. baryo.dev itself is rendered from it.
Each solves one problem, ships to NuGet, and is tested rather than described.
| Project | ||
|---|---|---|
| Verdict | ★10 | Result pattern with a zero-allocation core. The allocation promise is the product, so it is enforced by benchmark rather than asserted in a README. Nine test projects. |
| Mapsicle | Object mapping. Fourteen test projects, one per integration package, plus performance tests. Published benchmarks say where it loses as well as where it wins. | |
| Carom | Resilience: retry, timeout, circuit breaker, bulkhead, rate limiting, fallback. Zero dependencies, lock-free state, no allocations on the hot path. | |
| Talaan | Spreadsheet and CSV reader for .NET, xlsx and CSV, zero dependencies. barakoCMS consumes it as a published package rather than a project reference, so the packaging is exercised for real. |
| Project | ||
|---|---|---|
| umbraco-pwa | ★1 | Turns an Umbraco site into an installable, offline-capable app. On the Umbraco Marketplace. 86 tests. |
| umbraco-read-aloud | Read-aloud for an Umbraco site using Microsoft Edge neural TTS. |
| Project | ||
|---|---|---|
| rnxjs | ★1 | Reactive UI framework. Bootstrap-native, no build step. 646 passing tests. Worked examples. |
| rnxORM | Node.js ORM, integration-tested against PostgreSQL, SQL Server and MariaDB rather than mocked. | |
| pwa-kit | Install prompt for Android and iOS, a network-first service worker, and the helpers around them. | |
| read-aloud | Read-aloud for any site. Headless controller, web component, word highlighting. | |
| feed-slurp | RSS and Atom fetching in the browser. | |
| dopaminejs | Game feel engine: juice, rewards and feedback for HTML5 games. Built with it. | |
| BaryoDev.Libraries.JavaScript | Zero-dependency TypeScript utilities on npm. |
| Project | ||
|---|---|---|
| BaryoVM | PaaS-style deploys onto your own cheap VMs. Agentless, over SSH, one binary. Every BaryoDev deploy goes through it, which is how its gaps get found. | |
| Baryo.CLI | Local AI chat on Docker Model Runner. Models run on your machine, no API keys, nothing leaves the laptop. |
Tests that cannot fail are the defect I look for first: a mock returning what the real dependency never returns, an assertion satisfied by a type's default value, a benchmark that prints and exits zero. Before trusting a gate I break the thing it guards and check it goes red.
Decisions that are expensive to reverse get written down with the reasoning, not just the outcome, so the next person can disagree with the argument rather than guess at it.
AI-assisted daily, held to the same gates as everything else.
Languages C#, TypeScript, JavaScript, Go, SQL Backend .NET 8 to 10, ASP.NET Core, REST and GraphQL, microservices, event sourcing, CQRS-influenced design Messaging RabbitMQ, SQS, SNS, webhooks, background jobs Data PostgreSQL, SQL Server, Marten, Redis Cloud AWS (CDK, ECS, Fargate), Azure (Functions, App Services, DevOps), Oracle Cloud, Docker Testing xUnit, NUnit, Moq, Testcontainers, Playwright, Vitest, BenchmarkDotNet, security scanning in CI
📫 arnelirobles@gmail.com · 🌐 baryo.dev · ✍️ baryodev.medium.com