Tech Lead · Senior Full-Stack · React Native App Developer · AI Engineer

- Adaptability: 25+ years at the top of the game by reinventing my stack every time the industry turned — Java, PHP, React / Node / TypeScript, React Native, now AI engineering.
- Ambiguity to product: my repeated pattern — dive in, stand up a PoC, grow it into a production product.
- End-to-end ownership: apps, backend, AI microservice, infrastructure, CI/CD — I can build and run the whole stack solo, and have (two products live on Google Play).
- Modern and legacy: expert on TypeScript / Node / React / AWS; equally effective modernising PHP / Java systems while business features keep shipping.
- Hands-on leadership: Tech Lead style — architecture decisions, code reviews, mentoring, while still shipping.
- Fast onboarding: quick to deliver in unfamiliar codebases and domains.

Looking for fractional CTO, senior contract, or full-time product work —
project-based or ongoing.

- React, Node, TypeScript, AWS: my core stack for the last 10 years — expert level, used across many jobs and my own products.
- AI engineering: Python, LLM integration (Claude, OpenAI, DeepSeek), RAG end-to-end (chunking, embeddings, vector search, hybrid retrieval), agents (LangGraph, tool calling, MCP), AI evals (LLM-as-judge, golden datasets, regression gates), self-hosted open models (llama.cpp, GGUF), guardrails. Using AI in the products I build and utilizing AI coding practices.
- React Native: I build and ship mobile apps — iOS, Android and web from one codebase, with two apps live on Google Play.
- Founder and product mindset: focused on the product rather than obsessed with the code. I evolve the code toward releases, with a strong product UX mindset. Customer centric.
- Ambiguity: I thrive in it. Good track record of diving into new projects, standing up a PoC and growing it into the product. Ready to experiment and pivot — backed by 25+ years of solid development experience.
- Articulate: clear communication matters to me, with stakeholders and in writing.
- Other skills / experiences: Terraform, Docker, CI/CD, SQL and NoSQL databases, Stripe payments. PHP, Java, Technical leadership, Team leadership, 25+ years of experience.

Strong backend, frontend, dev-ops, cloud and AI skills.
I love solving business problems and helping find product-market fit with elegant solutions and a never-give-up attitude.