Senior Software Engineer, Backend Platform

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 $0 to ~$1B run rate and pay ~$60M to over 30K individuals every month.

Human data is the core infrastructure to AI advancement. Frontier AI labs currently improve model capabilities with various data-intensive post-training techniques. We believe that data spend for AI training will increase by 3-5x in the next few years and continue for much longer as models take on new domains. Handshake AI supports all of the frontier AI labs, working on their most complex data at the largest scale.

Join our Backend Platform team as a Senior Software Engineer, where you will be integral in owning and advancing the foundational systems that support every product team. This role offers the chance to engage with genuine platform-scale architecture challenges, tackling tasks such as optimizing Elasticsearch queries and redesigning CI pipelines. You will have a direct impact on how students connect with career opportunities through high-impact modernization work.

• Experience with AI-powered developer tools or AI integration in workflows.

• Background in developer experience infrastructure, such as devcontainers and CLI tooling.

• DevOps/Infrastructure expertise, ideally with GCP.

• Familiarity with Docker, service-oriented architecture, and backend languages like Go or TypeScript.