Senior Engineer (Growth)

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