Backend / platform-focused developer working on reliable developer tooling, CI/CD, testing systems, and execution correctness.
I build backend and full-stack systems with Go, TypeScript, Python, FastAPI, PostgreSQL, and GitHub Actions, and I contribute fixes upstream when I can reproduce a problem cleanly and prove the behavior with tests.
A Go CLI and GitHub Action for finding self-hosted GitHub Actions runner versions that are pinned in source or approaching end-of-life.
- source scanning for Dockerfiles, ARC/Helm values, Terraform/Packer, Ansible, and Chef
- live runner + official GitHub deprecation data
- table, JSON, and SARIF output
- tagged releases, CI, tests, security/contribution docs, and merged external contributions
Executable compliance testing for AI coding instructions such as CLAUDE.md, AGENTS.md, and repository rules. Produces sandboxed scenarios, scored reports, CI output, and SARIF.
PR-scoped mutation testing for JavaScript and TypeScript. Uses StrykerJS to focus mutation testing on changed lines and turn surviving mutants into review-ready signals.
A small TypeScript library for streamed LLM tool-call correctness. It keeps incomplete or unconfirmed streamed arguments from being treated as executable input and exposes provider/AI-SDK adapters plus validation hooks.
Current package: prefix-safe-json@0.5.0.
A focused utility for preserving GitHub Actions run history before retention removes useful CI evidence.
| Project | Work | Outcome |
|---|---|---|
| Atomic Agent | Closed malformed and ambiguously terminated native tool-call execution paths | Merged upstream in AtomicBot-ai/atomic-agent#144 |
| Tugtainer | Implemented configurable container update / rollback lifecycle hooks across backend, executor, persistence, UI, docs, and tests | Merged upstream in Quenary/tugtainer#217 |
| Vercel AI SDK | Reported unsafe automatic tool execution after unsafe terminal states | v5/v6/v7 fixes merged; all three merge commits carry Co-authored-by: canblmz1 credit |
| Roomote | Responsibly reported an unused environment endpoint that could expose raw environment configuration | Publicly acknowledged in Roomote v0.39.1 |
Verified contribution ledger →
I have shipped private/client systems across dealership operations, reporting, and web backends. Those repositories remain private; I do not use client source code as portfolio material.
The public portfolio is intentionally weighted toward work that can be inspected end-to-end: source, tests, CI, release history, and upstream review evidence.
- Node.js — nodejs/node#64954: recursive
readdirBuffer encoding behavior with regression coverage. - Apache Maka — apache/maka#3434: tool execution gated on raw stream completion evidence.
- Continue — continuedev/continue#13224: provider-index correlation for interleaved streamed tool calls.
The full ledger also tracks smaller open and closed-unmerged work. Open PRs are never presented as merged contributions.
- Reproduce against current upstream before proposing a fix.
- Prefer regression tests that fail on the old behavior.
- Test the real side-effect or execution boundary when it matters.
- Compare patch failures against a clean baseline before calling them regressions.
- Keep reliability and security claims scoped to what the evidence proves.
- Prefer small, maintainable fixes over broad abstractions without user pull.
Backend systems · platform tooling · CI/CD reliability · testing systems · OSS maintenance · LLM tool-call correctness