Founding Engineer

Carnot; San Francisco, Northern (CA, KY); Hybrid; USD 140,000 - 190,000; Full time

Job summary

Jinba in San Francisco is seeking a full-stack engineer to build frontend and backend for our enterprise vibe coding platform. You’ll design scalable systems, define data models, and ship features that translate enterprise needs into reliable software.

You’ll integrate AI models, work with customers, and focus on reliability, observability, and performance at scale. Proficiency with TypeScript, React, and modern cloud deployments is required; in-person work in SF is encouraged.

Qualifications

• Experience designing scalable frontend and backend architectures for enterprise platforms.
• Strong knowledge of data modeling and service boundaries.

Responsibilities

• Architect and build frontend and backend systems powering Jinba's 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.

Skills

TypeScript

React

System design

Distributed systems

CI/CD

Terraform

GitHub Actions

Vercel

Tools

Vercel AI SDK

Mastra

Langfuse

Datadog

OpenCode

Job description

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

• 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

• 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.