Founding Engineer

About the Role

Full-stack engineer who understands vibe coding tools and how recent AI frameworks work. You'll build both frontend and backend for our enterprise workflow automation platform.

Responsibilities

• Architect and build both frontend and backend systems powering our vibe coding platform
• Define technical strategy: system design, data modeling, service boundaries, and infrastructure choices
• Integrate AI models and build reliable natural language to action pipelines
• Collaborate directly with customers to translate enterprise needs into product solutions
• Evolve infrastructure for reliability, observability, and performance at enterprise scale
• Ship fast while building sustainable, maintainable systems

Requirements

Experience

• 5+ years building products quickly
• TypeScript (backend and frontend), React
• Deep understanding of system design, database architecture, and scaling distributed systems
• Modern deployment and infrastructure (Vercel, Cloudflare Workers). Infrastructure as code (Terraform). CI/CD pipelines (GitHub Actions)
• Experience with AI frameworks (Vercel AI SDK, Mastra) and patterns (agentic loops, tool calling, streaming, MCP)

Bonus

• Understanding of tools like OpenCode and how they work
• Shipped AI/LLM products to production.
• LLM observability and production debugging (Langfuse, Datadog).
• Experience at early-stage startups
• Major contributions to OSS projects

Mindset

• Founder mentality: hard work, independence, ownership
• Ready to work in person in San Francisco

About Jinba

We help large enterprises build automated workflows using plain English. Unlike traditional no-code tools that bolt a chat agent onto their interface, Jinba is built as a native vibe coding platform from the ground up.

YC W26. International team across SF and Tokyo. Growing fast with major enterprise contracts.