Full-stack engineer · systems-minded builder · software + media

I design and build execution-first systems at the intersection of software, AI, and media.

Founder of Justyn Clark Network (JCN) - a development studio focused on systems that value clarity, determinism, and durability over hype and abstraction.

My work typically centers on:

• execution models that survive interruptions
• schema-first platforms that scale cleanly
• AI systems with real constraints
• audio, video, and media pipelines
• developer tooling that does real work

These are active, evolving systems - not experiments or shelfware.

• JustBeatz Music (closed-source)
  A full-stack music platform focused on audio playback, media storage, and metadata management. Built to handle real media workflows, playback state, and production constraints, and later retired after serving its purpose.
  https://justbeatzmusic.com

• SMALL Protocol
  A shared language for making work traceable, resumable, and verifiable. Think “source control for execution state.”
  https://smallprotocol.dev

• loopexec
  A CLI for running bounded execution loops without losing context or progress. Designed to keep work moving forward, even when everything else stops.
  https://loopexec.dev

• musketeer
  A command-line companion for running coordinated work across multiple agents and tools. Built for alignment, guardrails, and keeping execution pointed in the same direction.
  https://musketeer.dev

• Schema Foundry (closed-source)
  A curated collection of schemas and system blueprints pulled from real products. Less theory. More things that actually ship.

• ClientBrief (closed-source)
  A structured intake system for turning messy ideas into usable inputs. Designed for clients, teams, and creative workflows that need clarity fast.

• Mindrail (closed-source)
  A safety rail for AI-assisted work. Keeps reasoning constrained, routed, and grounded in reality.

• PHOS (closed-source)
  A media utility layer for generating and managing visual assets. Built for consistency, reuse, and production-grade outputs.

• Thread-Based Engineering (TBE) (closed-source)
  A way to design and build systems in parallel without losing the thread. Focused on handoffs, traceability, and sane collaboration.

Frontend

• React, Remix, TypeScript
• TailwindCSS, MobX

Backend

• Go (Chi)
• Python (FastAPI)
• Node.js (NestJS)
• Rust

Data

• PostgreSQL, Redis
• Drizzle ORM, SQLAlchemy 2.0

Infrastructure

• Docker, Compose
• AWS, Fly.io, Railway
• Migrations, CI, execution tooling

Public repos focus on tooling and patterns that have proven themselves.

• https://github.com/justyn-clark/go-chi-postgres-starter
• https://github.com/justyn-clark/fastapi-sqlalchemy-starter

Most work happens in active product repositories and private systems.
Public code reflects ideas that survived contact with reality.