Senior Backend Engineer

Why join us? Handoff is the AI agent that runs a construction company. We help remodelers automate estimating, streamline operations, and win more work - backed by real-time cost data, intuitive design, and workflows that “speak contractor.” With over 10,000 monthly active users and $6B in annualized project volume already flowing through our platform, we’re becoming the trusted partner for the people who build our homes. We are backed by $25M+ raised from Y Combinator, Initialized, and Greycroft. Our team is distributed across hubs in Austin, São Paulo, and Buenos Aires, and we are deeply focused on building intuitive, high-impact solutions that make a real difference for our users. Senior Backend Engineer at Handoff You’ll take a leading role in designing and scaling the backend architecture that powers our platform. This isn’t just a heads-down coding role - you’ll be instrumental in evolving our infrastructure, improving developer workflows, and ensuring seamless performance and scalability across our core systems. You’ll work cross-functionally with product, design, and AI teams to build a robust, secure, and highly performant backend foundation that supports both our web and mobile experiences.