Fullstack Engineer - Growth

**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, Sequoia, 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. **Fullstack/Growth Engineer at Handoff** In this role, you’ll contribute across the stack, shipping features that directly impact activation, onboarding, and retention. You’ll collaborate closely with product, design, and growth teams to rapidly test, measure, and iterate on experiments that drive meaningful outcomes for our customers. This is an opportunity to apply your engineering skills beyond core product work, bringing a growth mindset to building utilities, integrations, and experiments that support our product\-led growth strategy. ### **What you’ll do** * Build lightweight features and prototypes across web and mobile to validate ideas quickly. * Translate winning experiments into production\-ready features, ensuring scalability, maintainability, and high performance. * Integrate with CRM/marketing tools (e.g., HubSpot) to support RevOps workflows, lead management, and onboarding experiments. * Partner closely with product, design, engineering, and AI teams to align on requirements and ensure that our solutions deliver cohesive, user\-focused solutions. ### **About you** * Bachelor's degree (or similar) in Computer Science, Engineering, or a related field. * 4\+ years of experience as a software engineer, ideally with exposure to growth engineering or experimentation. * Proficiency in **Typescript**, **Node** and **React Native.** * Experience working with Python, SQL, and cloud\-based architectures. * Strong product mindset, with an ability to connect technical work to business outcomes. * Curiosity and interest in **growth engineering**: running experiments, building tools, and measuring results. * Comfortable working in a fast\-paced, startup environment, with a bias toward rapid iteration. If you’re excited about driving user growth through experimentation and want to join a team that values speed, learning, and product impact, we’d love to hear from you! We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.