• Jobs
  • Startups
  • Hire
LoginSign up

Role description

Founding Engineer

JI
Jinba
YC W26
Founding roleAI-native
TypeFull-time
SenioritySenior
SponsorshipSponsors visas
Salary$150,000–$250,000
LocationSan Francisco / US
Engineering

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
Apply on Y Combinator
Save

Company info

JI

Jinba

Automate enterprise workflows through chat

YC W26

Claim jinba.io

Work at jinba.io? Sign in to claim this org and manage its profile.

Unlock human wisdom
ThesisTermsPrivacy
© 2026 Saywise Inc.