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, 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.

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.

What you'll do

• Design and implement scalable APIs, services, and data pipelines that support mission-critical workflows. Ensure reliability, maintainability, and security across all systems.
• Spearhead improvements in infrastructure and deployment strategies using tools like Kubernetes, Traefik, and AWS. Help us move fast without breaking things.
• Optimize application logic, database queries, and system performance to handle increasing workloads with speed and efficiency.
• Work closely with product, design, and AI teams to deliver backend solutions that support intuitive, AI-enhanced user experiences.
• Provide thoughtful code reviews, share best practices, and help foster a backend culture of quality, pragmatism, and continuous improvement.
• Implement and maintain CI / CD pipelines, monitoring, and observability systems that empower the team to ship with confidence and clarity.

About You

What we offer

If you’re passionate about building robust backend systems and want to help shape infrastructure that supports real 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.