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.