Software Engineer - Full-stack

Software Engineer - Full-stack Company Overview Promise modernizes how government agencies and utilities support people in financial difficulty. We build technology that makes it simple for residents to receive benefits, engage with assistance programs, set up flexible payment plans, and stay on track—while helping agencies increase efficiency, recover revenue, and deliver services with dignity. Our mission is to transform public systems so they work better for everyone, especially the most vulnerable. Our team includes experts from companies like Palantir, Google, Stripe , and esteemed government leaders. We work hard and believe deeply in what we do. We're looking for excellent people to build innovative, resilient technology. Backed by over $50 million in funding from top investors – such as Reid Hoffman, Howard Schultz, Michael Seibel, Y Combinator, 8VC, The General Partnership, First Round Capital, Kapor Capital, XYZ Ventures, and Bronze Investments – Promise has been recognized as one of Fast Company's "World's Most Innovative Companies of 2022,” “Forbes Next Billion-Dollar Startups 2024,” and Y Combinator’s #1 GovTech startup. ABOUT THE ROLE At Promise, we’re building technology that helps families stay afloat—turning financial stress into stability through flexible, affordable payment solutions. As a Senior Full-Stack Software Engineer with a frontend focus, you’ll shape the way people directly experience that mission. You’ll design and build intuitive, high-impact web applications that connect individuals facing financial hardship with essential public services. Using modern tools like React, TypeScript, and GraphQL, you’ll craft seamless user journeys powered by robust backend systems. This is a hands-on role for someone who cares deeply about product experience and engineering craft. You’ll move fluidly between frontend architecture and backend integrations, mentor teammates, and help define how we build as we scale. If you love turning complex systems into elegant user experiences — and want your work to matter — this role is for you. WHY THIS ROLE IS DIFFERENT We’re still early enough that your architectural decisions will shape the foundation of our product — but far enough along that your work will immediately impact real users at scale. At Promise, your code won’t just render UI. It will reduce stress, increase access, and improve how people interact with critical financial systems. If you’re excited about building beautiful, resilient systems that make a tangible difference in people’s lives, we’d love to meet you. WHAT YOU’LL DO BUILD WITH IMPACT Design and deliver scalable, reusable frontend systems and components that power critical financial workflows used by thousands of families each month. CRAFT EXCEPTIONAL EXPERIENCES Collaborate closely with product and design to create intuitive, accessible, and high-performing web applications that guide users through complex payment and relief flows with clarity and empathy. BRIDGE FRONTEND AND BACKEND Partner with backend engineers to define and evolve APIs, contribute to service design when needed, and ensure data flows cleanly from distributed systems to user interfaces. ARCHITECT FOR SCALE Help shape our frontend architecture, state management patterns, orchestration layers, and shared component libraries as we grow. RAISE THE BAR Write clean, maintainable, production-ready code. Identify and resolve performance issues, edge cases, and UX friction points to maintain a high quality bar. LEAD AND MENTOR Support and mentor engineers, contribute to thoughtful code reviews, and help cultivate a culture of ownership, curiosity, and engineering excellence. WHAT WILL HELP YOU SUCCEED Experience: 3+ years building production-grade software, with significant experience in modern frontend development. Frontend expertise: Strong proficiency in React and TypeScript. Experience building complex user flows, managing application state, and integrati ... (truncated, view full listing at source)