Senior Developer Infrastructure Platform

5C Data Centers USA, Inc. • Springfield, OH

7d

About The Position

We're building the platform that other engineers build on top of. You'll design and ship production services, internal SDKs, and Kubernetes operators that abstract away the complexity of our hybrid infrastructure; spanning CloudStack, bare-metal GPU clusters. You write code that other teams depend on, which means you care deeply about API contracts, backward compatibility, and not breaking things quietly. This is a software engineering role. You'll be expected to own services end-to-end; design, implementation, testing, and the occasional 3am page when something in the critical path breaks.

Requirements

• Java: deep understanding of concurrency, JVM internals, and experience in large codebases with engineering process.
• Go: production services experience, not just tooling scripts.
• Python: experience writing clean, testable, packaged code, not ad-hoc scripts.
• Kubernetes: deep experience, including writing an operator or custom controller from scratch.
• OpenStack or CloudStack: ability to explain how a compute scheduler works.
• gRPC / protobuf: experience with service design, streaming, and schema evolution.
• API design discipline: experience with versioning, backward compatibility, and contracts, considering downstream impact.
• Hardware awareness: experience debugging at the hypervisor, driver, or bare-metal level.

Nice To Haves

• GPU compute: CUDA, MIG, vGPU, device plugins, PCIe passthrough, SR-IOV.
• Agentic AI / ML (practitioner level): LLM API integration, agent frameworks (LangChain / LlamaIndex), RAG pipeline design, vector DBs, MLOps fundamentals. Experience shipping a system with a model in the critical path and debugging it.
• Inference basics: vLLM, Triton, or similar, to understand platform support needs.
• Open Source development experience on a large project.

Responsibilities

• Design and ship production services, internal SDKs, and Kubernetes operators.
• Abstract away the complexity of hybrid infrastructure (CloudStack, bare-metal GPU clusters).
• Own services end-to-end: design, implementation, testing.
• Respond to critical path incidents, including potential 3am pages.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed