Founding Engineer

About the RoleFull-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.ResponsibilitiesArchitect and build both frontend and backend systems powering our vibe coding platformDefine technical strategy: system design, data modeling, service boundaries, and infrastructure choicesIntegrate AI models and build reliable natural language to action pipelinesCollaborate directly with customers to translate enterprise needs into product solutionsEvolve infrastructure for reliability, observability, and performance at enterprise scaleShip fast while building sustainable, maintainable systemsRequirementsExperience5+ years building products quicklyTypeScript (backend and frontend), ReactDeep understanding of system design, database architecture, and scaling distributed systemsModern 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)BonusUnderstanding of tools like OpenCode and how they workShipped AI/LLM products to production.LLM observability and production debugging (Langfuse, Datadog).Experience at early-stage startupsMajor contributions to OSS projectsMindsetFounder mentality: hard work, independence, ownershipReady to work in person in San FranciscoAbout JinbaWe 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.