Full-stack AI Engineer specializing in agent architectures, AI UX, and early-stage product development.

Stealth AI Startup — Software Engineer (Apr 2024 - Present)
Leading agent architecture design and implementation. Built extensible tool framework with type-safe validation and automatic error correction. Shipping hybrid local/cloud LLM system optimizing for cost, performance, and privacy. Full-stack: Node, Bun, Deno, Swift/Apple, CI/CD.

waggle-dance (2023)
Open-source multi-agent workflow orchestration with DAG-based planning—built before reasoning models existed. Parallel agent execution, TypeScript stack (Next.js, LangChain, Postgres, Weaviate).

Pluto TV (2013-2016)
First mobile engineer at pre-seed stage through $340M acquisition by Viacom. Launched original apps across iOS, Android, Apple TV, Android TV. Featured at Google I/O 2015. Built and led mobile/frontend teams.

ElectricSleep ⚡😴
Open-source Android sleep tracking app with 1M+ users.

• AI Engineering: Agent systems, RAG/context engineering, tool frameworks, evals, MLOps
• Apple Platforms: iOS, macOS, iPadOS, tvOS, watchOS, SwiftUI
• Web: TypeScript, React, Next.js, Deno, Node.js, Bun
• Languages: TypeScript, Swift, Python, Rust, Kotlin
• Product: 0→1 development, technical leadership, early-stage startups

• Test-time compute scaling (reasoning, agent graphs, retrieval optimization)
• Agentic computer use beyond current assistants
• Model evaluation methodology and dataset development
• Traditional ML for LLM inference optimization

🌐 jonwillis.dev
📧 [email protected]
💼 Open to co-founder opportunities in AI product space