Senior Software Engineer (SaaS Infrastructure, Weights & Biases)

Join our team as a Senior Software Engineer focused on SaaS infrastructure. In this role, you will design, build, and operate the backend services and APIs that power our SaaS platform. You will work primarily with Go, Kubernetes, PostgreSQL, and Terraform across multiple public clouds. You will also provide technical leadership and mentorship to the team, influence the technical direction of the platform, and contribute to the success of cross-functional stakeholders.

• Design, build, deploy, and operate critical backend services and APIs that power our SaaS infrastructure across multiple cloud environments.
• Evolve system designs to meet increasingly challenging scale, stability, and performance requirements, and break down and solve large, ambiguous problems.
• Provide technical leadership and mentorship to team members, work alongside Principal Engineers, and influence the broader technical direction of the platform.
• Proven ability to evolve designs to meet increasingly challenging scale, stability, and performance requirements
• Comfortable owning on-call for services you build, and passionate about reducing on-call burden through architecture
• Deep, hands-on expertise with our core stack: Go, Kubernetes, Terraform, and PostgreSQL
• Strong API design skills, with a track record of building interfaces that scale and last
• Demonstrated ability to break down and solve large, ambiguous problems
• Deep experience with one or more major public clouds (AWS, GCP, or Azure)
• Proven ability to provide technical leadership to team members, work effectively with Principal Engineers, influence technical direction, and contribute to the success of cross-functional stakeholders
• Experience building and operating SaaS products
• Experience with CI/CD systems (GitHub Actions, Jenkins, etc.) and monitoring/observability tooling (Prometheus, Datadog, etc.)
• 4+ years of professional software engineering experience designing, building, deploying, and operating critical backend services across a large enterprise
• We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams – even if you aren't a 100% skill or experience match