Senior Engineer, Core API - W&B
Core
Building and evolving core backend systems, shared infrastructure, and API standards that power the Weights & Biases platform within CoreWeave's AI cloud.
Role type
Senior backend engineer (distributed systems & API infrastructure)
Builds
Shared backend infrastructure, custom job schedulers, schema tooling, and API standards for the AI platform
Domain
Cloud infrastructure for AI/ML workloads
Deliverable
production ML models | infrastructure
Required skills
distributed systems design, API design (REST/GraphQL/gRPC), Go/Python, concurrency patterns, system performance optimization, shared infrastructure ownership
Preferred skills
schema management/code generation, custom job schedulers, cross-team API governance, high-scale data/ML infrastructure, SLO-driven development
Technologies
Go, Python, GraphQL, gRPC, REST, protobuf, OpenAPI
Responsibilities
Design and maintain distributed systems at scale; define and evolve API standards; own internal schema and code generation tooling; improve custom job scheduler reliability and observability; optimize system performance (CPU, memory, I/O, network)
Seniority
Senior, hands-on IC
