Founding Engineer

Jinba.io; San Francisco (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

A dynamic technology company is looking for a skilled full-stack engineer to architect and build both frontend and backend systems for their enterprise workflow automation platform. You will integrate AI models, define technical strategies, and collaborate with customers to create innovative solutions. Ideal candidates have over 5 years of experience, expertise in TypeScript and React, as well as a solid understanding of modern infrastructure and deployment methods. This role is based in San Francisco and requires a founder mentality.

Qualifications

• 5+ years building products quickly.
• Deep understanding of system design, database architecture, and scaling.
• Experience with modern deployment strategies and infrastructure.

Responsibilities

• Architect and build both frontend and backend systems.
• Define technical strategy for system design and service boundaries.
• Integrate AI models into product solutions.

Skills

TypeScript

React

System design

Database architecture

Scaling distributed systems

Infrastructure as code

CI/CD pipelines

AI frameworks

Tools

Vercel

Cloudflare Workers

Terraform

GitHub Actions

Job description

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.