Skip to content
View rjgeng's full-sized avatar
  • San Francisco Bay Area, CA

Organizations

@BloomTech-Labs

Block or report rjgeng

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.

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.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
rjgeng/README.md

Rongjun Geng

AI/LLM & systems software engineer — agentic systems, RAG, full-stack. San Francisco Bay Area.

I build LLM-powered products end to end — FastAPI + LangChain backends, React frontends — and contribute fixes upstream to open-source multi-agent orchestration systems.

🔀 Open-source contributions

Fixes merged across the gastownhall ecosystem — an open-source multi-agent orchestration platform — each reviewed and approved by independent maintainers. 46 merged PRs across 2 repos:

gastownhall/gascity

  • #4925 — fix(import): local-in-git pack imports lock to HEAD, not latest tag
  • #4898 — fix(gc): stop bd's dolt-unreachable message from suggesting a conflicting bd dolt start
  • #5302 — fix(dashboard): add Claude 5-gen models to TRUE_CONTEXT_WINDOWS
  • #4899 — fix(gc): document and JSON-report gc stop's supervisor unregister behavior
  • #4900 — fix(gc): correct gc formula cook --attach help text (blocks, not parent-child)
  • …and 40 more — see all 45

gastownhall/gastown

  • #4173 — fix(memories): tolerate non-string values in bd kv list

Themes: concurrency races, operational guardrails, and failure-mode UX in long-running agent systems.

Maintainer on #3469: "a careful, surgical fix — I especially appreciate that you keyed the dedup signature on the set of active conditions."

I also file actionable bug reports that maintainers act on — e.g. #2814 (bundled Dolt 2.0.8 corruption → version pin) and #2846 (compactor quarantine race starving GC) — both closed with a by-name thanks from a core committer.

🧰 Technical stack

Languages
Python · Go · C/C++ · Rust · Bash · TypeScript / JavaScript

Agentic AI & orchestration
Gas City · Gas Town · multi-agent orchestration · agent lifecycle management · tool use · human-in-the-loop workflows

LLM / GenAI
RAG · LangChain · Hugging Face · FAISS · Chroma · Ollama · OpenAI · Claude · Gemini · DeepSeek · QLoRA · fine-tuning · prompt engineering · multimodal pipelines

Backend & distributed systems
FastAPI · REST · gRPC · GraphQL · WebSockets · multithreading · Linux system programming · subprocess/lifecycle management · concurrency control · failure recovery

Data & storage
PostgreSQL · MySQL · Redis · SQLite · MongoDB · Dolt · S3 · Supabase

Frontend
React · Next.js · Tailwind CSS

Cloud & DevOps
AWS · Docker · GitHub Actions · Jenkins · Nginx · HAProxy

Linux debugging & reliability
gdb · perf · Valgrind · system calls · concurrency debugging · failure analysis · observability · operational guardrails

Networking / embedded / RF
TCP/IP · MQTT · GNU Radio · UHD · LabVIEW · KiCad · Altium Designer · Vivado · Verilog / VHDL

Version control
Git · GitHub · GitLab · SVN

📌 Pinned projects

See the repositories below for selected AI, agentic-systems, systems-software, and engineering projects.

Pinned Loading

  1. gascity gascity Public

    Forked from gastownhall/gascity

    Orchestration-builder SDK for multi-agent coding workflows

    Go

  2. gascity-packs gascity-packs Public

    Forked from gastownhall/gascity-packs

    Gas City packs

    Go

  3. gastown gastown Public

    Forked from gastownhall/gastown

    Gas Town - multi-agent workspace manager

    Go

  4. gastownhall/beads gastownhall/beads Public

    Beads - A memory upgrade for your coding agent

    Go 26.5k 1.8k