Founding Engineer

Responsibilities

• Architect and build both frontend and backend systems powering our vibe coding platform
• Define technical strategy including system design, data modeling, 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

• 5+ years of experience building products quickly
• Proficiency in TypeScript (backend and frontend) and React
• Deep understanding of system design, database architecture, and scaling distributed systems
• Experience with modern deployment and infrastructure (Vercel, Cloudflare Workers, Terraform, GitHub Actions)
• Experience with AI frameworks (Vercel AI SDK, Mastra) and patterns (agentic loops, tool calling, streaming, MCP)
• Founder mentality with a focus on hard work, independence, and ownership
• Ability to work in person in San Francisco

Preferred Qualifications

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

About the Company

Jinba helps large enterprises build automated workflows using plain English. Unlike traditional no-code tools, Jinba is built as a native vibe coding platform from the ground up. We are a YC W26 company with an international team across SF and Tokyo.