Senior Engineer (Growth)

All open roles Growth Senior Engineer (Growth) San Francisco Full-time Hybrid 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 onboardingDesign and run A/B tests across the funnelIntegrate and automate our CRM and lead nurturing systemsShip 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, PythonData fluency: BigQuery, Mixpanel (or similar). You can write queries, build dashboards, and pull your own insightsProduct growth experience: You've thought about activation, retention, and conversion — not just featuresBias to action: You ship fast, measure everything, and iterateComfort 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 companyFamiliarity with CRM/marketing automation (Loops, HubSpot, Segment, etc.) Why Jinba YC W26 — breakout startupReal enterprise traction before Demo DaySmall team, big ownershipSan Francisco-based, working on hard problems Location San Francisco Team Growth Employment Full-time Work style Hybrid Apply You are applying for Senior Engineer (Growth) Website Full name * Email * Resume / CV * PDF, DOC or DOCX, up to 10 MB LinkedIn Portfolio or GitHub Anything you'd like us to know By submitting, you agree to our Privacy Policy. We use what you send to consider your application. Something went wrong. Please try again in a moment. Application received Thanks for applying. We read every application and will be in touch by email.