---
title: 'Senior Engineer (Growth) at Jinba.io'
canonical: 'https://feeny.ai/job/senior-engineer-growth-jinba-io-san-francisco-mh1wg1y61ayg'
type: 'job'
last_seen: '2026-09-14'
---

# Senior Engineer (Growth) at Jinba.io

- **Company:** Jinba.io
- **Location:** San Francisco, CA
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-01-28
- **Last confirmed live:** 2026-09-14
- **Apply:** https://jobs.ashbyhq.com/carnot-ai/e759b704-b006-41cb-becd-5b9b46111bc6

## Job description

Senior Engineer (Growth) — Jinba (YC W26) Location: San Francisco Reports to: Head of Growth

## About Jinba

Jinba is the enterprise workflow automation platform that lets teams describe workflows in natural language and deploy them as APIs or MCP servers. We have 40,000+ daily enterprise users at Japanese Fortune Global 500 companies — and we're just getting started. We're part of Y Combinator W26.

## The Role

We're hiring a Growth Engineer to own the systems that turn signups into customers. You'll work across the full stack — building landing pages, instrumenting funnels, running in-app experiments — whatever it takes to move the metrics. This is an engineering role with a growth mindset, not a marketing role with some coding involved. You'll ship real features, run real experiments, and have direct impact on revenue.

## What You'll Do

- Build and optimize our marketing site, signup flows, and onboarding
- Design and run A/B tests across the funnel
- Integrate and automate our CRM and lead nurturing systems
- Ship growth features in the product (referrals, usage triggers, activation loops)
- Work directly with the Head of Growth to prioritize high-leverage experiments

## What We're Looking For

- Full-stack skills: TypeScript, React, SQL, Python
- Data fluency: BigQuery, Mixpanel (or similar). You can write queries, build dashboards, and pull your own insights
- Product growth experience: You've thought about activation, retention, and conversion — not just features
- Bias to action: You ship fast, measure everything, and iterate
- Comfort with ambiguity: We're early. You'll participate in crafting high leverage hypotheses to test.

## Nice to Have

- Ex-technical founder (you've built something from zero)
- Experience at a PLG or developer tools company
- Familiarity with CRM/marketing automation (Loops, HubSpot, Segment, etc.)

## Why Jinba

- YC W26 — breakout startup
- Real enterprise traction before Demo Day
- Small team, big ownership
- San Francisco-based, working on hard problems

## 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
- [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-jinba-io-san-francisco-bdssfg0pnv08) — San Francisco, CA