---
title: 'Founding Engineer at Jinba.io'
canonical: 'https://feeny.ai/job/founding-engineer-jinba-io-san-francisco-bdssfg0pnv08'
type: 'job'
last_seen: '2026-09-07'
---

# Founding Engineer at Jinba.io

- **Company:** Jinba.io
- **Location:** San Francisco, CA
- **Compensation:** $140k–$250k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2025-12-14
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.ashbyhq.com/carnot-ai/e88c7892-b64d-4b5d-a813-deac00db724d

## Job description

## 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

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.

## About Jinba.io

## Company Overview
- **One-liner**: Jinba provides an enterprise AI workflow builder that lets business teams create and deploy production-ready workflows using natural language, with SOC 2 compliance and on-premise deployment options.
- **Entity Type**: Private (Startup, Y Combinator Winter 2026 batch)
- **Headquarters**: San Francisco, USA (with an office in Tokyo, Japan)
- **Founded**: 2024 (estimated based on YC batch timing)
- **Founders**: Shoya Matsumori (Co-founder and CEO, Ph.D. in machine learning) and Takuya Norisugi (Co-founder and COO, former McKinsey manager)

## Core Business
- **Primary industry**: Enterprise AI Workflow Automation / No-code Development
- **Target customers**: B2B, specifically large enterprises in regulated industries (banking, insurance, financial services) and Fortune Global 500 companies
- **Mission or purpose statement**: Enable enterprises to build AI workflows just by chatting, eliminating the IT backlog and allowing business teams to deploy workflows to production with full compliance controls.

## Products & Services
- **Jinba Flow**: A vibe-coding platform where builders create and deploy workflows using natural language. Workflows can be reviewed and edited visually with flowcharts, integrated with 100+ external services, and published as APIs or batch processes.
- **Jinba App**: The execution environment where users run and interact with deployed workflows. Supports chat-based execution, auto-generated input forms, and MCP (Model Context Protocol) integration for AI agent access.
- **Jinba Toolbox (Beta)**: A centralized tool management and execution platform for AI agents, offering sandbox execution in containers, semver versioning, REST API/SDK/MCP support, and a centralized tool registry.
- **Jinba API**: Enables technical teams to build and deploy custom APIs in minutes without writing code, with 100+ integrations, SSO, RBAC, and audit logs.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed
- **Key Metric**: Total Funding — Y Combinator Winter 2026 batch (standard YC deal: ~$125K-$500K); serves 40,000 enterprise users at major financial institutions
- **Notable Investors/Partners**: Y Combinator (Winter 2026 batch); SOC 2 compliant; serves Fortune Global 500 companies in banking, insurance, and other highly regulated industries
- **Growth Signals**: 40,000 enterprise users; YC-backed with active hiring across engineering, sales, and design roles; expanding from San Francisco to Tokyo office; targeting highly regulated industries with compliance-first approach

## Competitive Advantages
- **Natural language workflow creation**: Unlike traditional no-code tools with drag-and-drop interfaces, Jinba lets users describe workflows in plain language, significantly reducing build time (promise of "Prompt to API in 5 minutes")
- **Enterprise-grade security from day one**: SOC 2 compliant with end-to-end encryption, SSO, RBAC, audit logging, on-premise or private cloud hosting, and private model hosting — designed specifically for regulated industries
- **Dual product ecosystem**: Jinba Flow for builders and Jinba App for consumers, with MCP integration allowing AI agents to access workflows
- **Targeting regulated industries**: Built specifically for banks, insurers, and compliance-heavy enterprises that competitors like Zapier, Make, and n8n cannot adequately serve due to security gaps

## Strategic Focus
- **Deep enterprise penetration**: Focused on Fortune Global 500 companies in banking, insurance, and regulated sectors
- **Security and compliance leadership**: Emphasizing on-premise deployment, private model hosting, and SOC 2 compliance as core differentiators
- **AI-native workflow automation**: Positioning as "Lovable meets n8n, but built for the enterprise" — combining vibe-coding with production-ready deployment
- **Global expansion**: Hiring across San Francisco and Tokyo offices, suggesting dual-market strategy (US and Japan)

## Why Work Here
- **YC-backed startup**: Winter 2026 batch with strong founder backgrounds (Ph.D. in ML, McKinsey) and rapid traction (40,000 users)
- **High-impact roles**: Open positions include Founding Engineer, Founding Sales Lead, Chief of Staff, Forward Deployed Engineer, and Founding Design Engineer — offering early-stage ownership and equity
- **Hybrid/remote flexibility**: Roles listed as "On-site" (San Francisco), "Hybrid" (San Francisco and Tokyo), and "Contract Hybrid" — suggesting flexibility depending on role
- **Competitive compensation**: Salary ranges listed for some roles (e.g., $150K-$250K for Founding Engineer roles)
- **Engineering culture**: Emphasis on "making something people want" and "building with AI" — strong technical culture with modern stack
- **Dual-location optionality**: Offices in San Francisco and Tokyo allow for international work opportunities

## Sources
1. [jinba.io](https://jinba.io/)
2. [jinba.io/careers](https://jinba.io/careers)
3. [ycombinator.com/companies/jinba](https://www.ycombinator.com/companies/jinba)
4. [carnot.mintlify.app](https://carnot.mintlify.app/en/introduction)
5. [jinba.io/api](https://jinba.io/api)

## Other roles at Jinba.io

- [Product Designer](https://feeny.ai/job/product-designer-jinba-io-san-francisco-4w6msjxm2k2e) — San Francisco, CA
- [Senior Engineer (Growth)](https://feeny.ai/job/senior-engineer-growth-jinba-io-san-francisco-mh1wg1y61ayg) — San Francisco, CA
- [Chief of Staff](https://feeny.ai/job/chief-of-staff-jinba-io-san-francisco-psd7excg2eq7) — San Francisco, CA
- [Senior Frontend Engineer](https://feeny.ai/job/senior-frontend-engineer-jinba-io-tokyo-hdmncde2yb6e) — Tokyo, Japan
- [Founding Design Engineer](https://feeny.ai/job/founding-design-engineer-jinba-io-san-francisco-bbkdpv2jegk3) — San Francisco, CA
- [Founding Sales Lead](https://feeny.ai/job/founding-sales-lead-jinba-io-tokyo-pxhsbxegn01f) — Tokyo, Japan
- [Forward Deployed Engineer](https://feeny.ai/job/forward-deployed-engineer-jinba-io-san-francisco-vsgqka85mm5x) — San Francisco, CA
- [Forward Deployed Engineer](https://feeny.ai/job/forward-deployed-engineer-jinba-io-tokyo-5jb1hzzpphdc) — Tokyo, Japan
- [Founding Engineer](https://feeny.ai/job/founding-engineer-almedia-berlin-y3yjr148grcs) — Berlin, Germany
- [Founding Engineer](https://feeny.ai/job/founding-engineer-tightrope-san-francisco-qvmc2rbwg528) — San Francisco, CA