5+ years of experience building and shipping software applications
Demonstrated experience building AI or LLM-powered products, agents, or agentic workflows that real users depend on
Strong software engineering fundamentals and the ability to clear a real technical bar, not just prompt well
Ability to build accurate mental models of how systems work under the hood, including the models and harnesses you're building on
Proficiency in Python, with fluency in at least one other language
Comfort working autonomously in a fast-moving environment with limited structure
Ability to move between customer-facing product work and internal tooling and automation
Strong communication skills, with the ability to bridge technical depth and business needs
Experience as a founding engineer or early employee at a startup
Experience building evals, agent observability, or tooling for non-deterministic systems
Familiarity with agent frameworks and harnesses (LangChain, Claude Code, Codex, OpenCode, MCP)
Experience with model development methods like supervised fine-tuning, reinforcement learning, synthetic data generation, LoRA, and full fine-tunes
Frontend fluency