Jinba

Automate enterprise workflows through chat

Founding Engineer

$150K - $250K•San Francisco / US
Job type
Full-time
Role
Engineering, Full stack
Experience
3+ years
Visa
Will sponsor
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Shoya Matsumori
Shoya Matsumori
Founder

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

Jinba lets enterprise teams vibe-code AI workflows instead of drag and drop. Describe what you need in plain language, and your whole company can start using it immediately. No engineers required. Enterprise-grade permissions, audit logging, and on-prem deployment built in. We serve 40,000+ daily enterprise users at major financial institutions including Fortune Global 500 companies in banking, insurance, and manufacturing.

Jinba
Batch:W26
Team Size:2
Status:
Active
Founders
Shoya Matsumori
Shoya Matsumori
Founder
Takuya Norisugi
Takuya Norisugi
Founder