Senior Software Engineer, Growth

About Handshake Handshake was founded on a simple belief that everyone deserves a path to a great career, regardless of where they went to school or who they know. Today, we power 25 million job seekers, 1 million+ employers, and 1,600 educational institutions. In 2025, we started Handshake AI and built the fastest-growing AI data business in history. We work directly with frontier AI lab researchers to create evaluations, publish benchmarks, and push the boundary of data. We’ve grown from 0to~1B run rate and pay ~$60M to over 30K individuals every month. Why join Handshake now: Shape how every career evolves in the AI economy, at global scale, with impact your friends, family and peers can see and feel Partner hand-in-hand with world-class AI labs, Fortune 500 partners and the world’s top educational institutions Work together with engineers, scientists, operators, and more from Palantir, Meta, Scale AI, and former YC founders Build a massive, fast-growing business with billions in revenue About the Role As a Senior Software Engineer on the Growth team, you'll build the products that connect millions of students with employers. You'll drive meaningful technical initiatives, shape the technical direction of the team, and deliver high-quality, scalable solutions that directly impact one of the fastest-growing career platforms in the world. This role is onsite 5 days a week in our SF office. Your Role Design, build, and ship experiments across the user funnel — onboarding, activation, retention, notifications — with a strong bias toward measurable impact Architect and scale distributed systems to support millions of users, ensuring high availability and performance Partner with Product Managers and Data Scientists to translate growth hypotheses into technical designs and shippable experiments Mentor and elevate engineers across the team, fostering a culture of growth and technical excellence Balance speed and rigor — know when to move fast with a lightweight test and when a feature needs production-grade durability Desired Capabilities 5+ years of professional software engineering experience, ideally with exposure to consumer-facing or growth-focused products Strong fundamentals in backend and/or full-stack development (adjust based on your stack — e.g., Ruby on Rails, GraphQL, React, or equivalent) Experience building or working within experimentation platforms (e.g., feature flagging, A/B testing frameworks, statistical significance tooling) A track record of shipping iteratively and learning from real user data, not just building to spec Strong collaboration skills — you can work fluidly with PMs, designers, and data scientists, and can communicate trade-offs clearly A growth mindset: curiosity about why something worked or didn't, not just whether it shipped Extra Credit Background in notification, acquisition, user authentication/authorization at scale Background in mobile growth (iOS/Android) alongside web Familiarity with LLM-powered features or AI-assisted product experiences Prior experience in high-growth or rapidly scaling environments Perks Handshake delivers benefits that help you feel supported—and thrive at work and in life. The below benefits are for full-time US employees. 🎯 Ownership: Equity in a fast-growing company 💰 Financial Wellness: 401(k) match, competitive compensation, financial coaching 🍼 Family Support: Paid parental leave, fertility benefits, parental coaching 💝 Wellbeing: Medical, dental, and vision, mental health support, wellness stipend 📚 Growth: Learning stipend, ongoing development 💻 Remote & Office: Internet, commuting, and free lunch/gym in our SF office 🏝 Time Off: Flexible PTO, 15 holidays + 2 flex days 🤝 Connection: Team outings & referral bonuses Explore our mission, values, and comprehensive US benefits at joinhandshake.com/careers .