John here, product-based SWE with 7+ years on interface design and engineering work across fintech and OSS dev-tools. I’ve led frontend delivery for payment and e-wallet products, and i'm now building open-source tools for agentic coding and domain-specific harnesses in my spare time.
Remote: Yes
Willing to relocate: Yes, globally
Technologies: TypeScript, JavaScript, React, Python, LLMs, Harness Engineering, Vite, Next.js, Svelte, Vue, Tailwind, Node.js, Go, Docker, Flask, Rust, Flutter
Résumé/CV: https://johnrengwu.com
Email: johngohrw@gmail(dot)com
John here, product-based SWE with 7+ years on interface design and engineering work across fintech and OSS dev-tools. I’ve led frontend delivery for payment and e-wallet products, and i'm now building open-source tools for agentic coding and domain-specific harnesses in my spare time.