Software Engineer, SaaS Infrastructure - Weights & Biases

The AI Dev Platform Tooling team builds and operates the SaaS platform that lets our engineers ship software quickly, reliably, and safely. We own the deployment automation, infrastructure provisioning and monitoring, and release systems - built on a Go, Kubernetes, Terraform, and PostgreSQL stack - that underpin our engineering organization’s ability to deliver software to customers across GCP, AWS, Azure., We are seeking a Senior Software Engineer to design, build, and operate the backend services and APIs at the core of our SaaS infrastructure. This is primarily a backend software engineering role: you’ll write Go running on Kubernetes, manage state in PostgreSQL, and provision infrastructure with Terraform across multiple public clouds. You’ll evolve designs to meet increasingly challenging scale, stability, and performance demands, and own large, ambiguous problems end to end. We care deeply about a sustainable on-call culture, so you’ll participate in on-call rotations while championing the architecture that reduces on-call burden over time.

In this role, you will:

• Design, build, deploy, and operate critical backend services and APIs that power our SaaS infrastructure across AWS, GCP, Azure, and customer-managed environments.
• Treat API design as a first-class concern, defining clean, durable interfaces that internal and external consumers depend on.
• Evolve system designs to meet increasingly challenging scale, stability, and performance requirements.
• Break down and solve large, ambiguous problems, turning them into well-scoped, shippable engineering work.
• Reduce on-call burden through better architecture, automation, and observability - and participate in on-call rotations.
• Provide technical leadership and mentorship, work alongside Principal Engineers, and influence the broader technical direction of the platform.
• Contribute to frontend web clients where it accelerates the team (a plus, not a requirement).

• 4+ years of professional software engineering experience designing, building, deploying, and operating critical backend services across a large enterprise.
• Deep, hands-on expertise with our core stack: Go, Kubernetes, Terraform, and PostgreSQL.
• Deep experience with one or more major public clouds (AWS, GCP, or Azure).
• Strong API design skills, with a track record of building interfaces that scale and last.
• Proven ability to evolve designs to meet increasingly challenging scale, stability, and performance requirements.
• Demonstrated ability to break down and solve large, ambiguous problems.
• Comfortable owning on-call for services you build, and passionate about reducing on-call burden through architecture.
• 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.

Preferred

• Experience building and operating SaaS products.
• Experience with CI/CD systems (GitHub Actions, Jenkins, etc.) and monitoring/observability tooling (Prometheus, Datadog, etc.).

Wondering if you’re a good fit? 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. Here are a few qualities we’ve found compatible with our team. If some of this describes you, we’d love to talk.

• You love designing and operating backend services that scale gracefully under pressure.
• You’re curious about reducing on-call burden through better architecture rather than more heroics.
• You’re an expert in building critical services on a Go, Kubernetes, Terraform, and PostgreSQL stack.

The base salary range for this role is $153,000 to $204,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility)., In addition to a competitive salary, we offer a variety of benefits to support your needs. The benefits below reflect our US-based offerings for full-time employees; for roles in other locations, benefits vary and are shared during the hiring process. These include:

• Medical, dental, and vision insurance - 100% paid for by CoreWeave
• Company-paid Life Insurance
• Voluntary supplemental life insurance
• Short and long-term disability insurance
• Flexible Spending Account
• Health Savings Account
• Tuition Reimbursement
• Ability to Participate in Employee Stock Purchase Program (ESPP)
• Mental Wellness Benefits through Spring Health
• Family-Forming support provided by Carrot
• Paid Parental Leave
• Flexible, full-service childcare support with Kinside
• 401(k) with a generous employer match
• Flexible PTO
• Catered lunch each day in our office and data center locations
• A casual work environment
• A work culture focused on innovative disruption

CoreWeave is The Essential Cloud for AI . Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Learn more at www.coreweave.com., Why CoreWeave? At CoreWeave, we work hard, have fun, and move fast! We’re in an exciting stage of hyper-growth that you will not want to miss out on. We’re not afraid of a little chaos, and we’re constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values:

• Be Curious at Your Core
• Act Like an Owner
• Empower Employees
• Deliver Best-in-Class Client Experiences
• Achieve More Together

We support and encourage an entrepreneurial outlook and independent thinking. We foster an environment that encourages collaboration and provides the opportunity to develop innovative solutions to complex problems. As we get set for takeoff, the growth opportunities within the organization are constantly expanding. You will be surrounded by some of the best talent in the industry, who will want to learn from you, too. Come join us!