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José David Baena

Projects

Professional systems work and independently built software, with each project’s role, problem, stack, and public outcome kept distinct.

Professional work

GitHub

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I work on the messaging and background-job primitives that move pushes, pull requests, and workflow events across GitHub.

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WebsiteProfile
Stack
GoRubyJavaKafka

Personal projects

josedab.com

josedab.com

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This site is my writing home, portfolio, and sandbox for the publishing workflow I want to use myself.

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WebsiteSource
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Next.jsReactTypeScriptTailwind CSSMDXContentlayer
Async Failure Lab

Async Failure Lab

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A deterministic teaching lab for inspecting retries, unknown outcomes, duplicate dispatch, authorization, and idempotency boundaries.

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Open labInspect source
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Next.jsReactTypeScriptJest
Background Job Simulator (historical)

Background Job Simulator (historical)

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An earlier standalone teaching prototype for queues, retries, and failure modes. Its former public endpoints are unavailable; the maintained successor now lives in this site.

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Open maintained successor
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Next.jsTypeScriptTailwind CSSD3.js
Repo Analyzer

Repo Analyzer

An exploratory GitHub repository-analysis prototype. Its former public demo is unavailable, so this record does not present a live endpoint.

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Next.jsTypeScriptChart.jsGitHub API
Paul Graham essays archive

Paul Graham essays archive

An offline-friendly reading prototype for Paul Graham's essays. No public source endpoint is currently claimed from this page.

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Next.jsTypeScriptService Workers

Tools and working references

Background Job Toolkit

18 browser-only labs, calculators, and guides grouped by the engineering problem they help you reason about. Inputs stay local, and every model states its assumptions.

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