Role Overview We are looking for a Senior Infrastructure Developer with 10+ years of experience to own, evolve, and scale the platform that powers our most demanding ML training workloads. This is not a "keep the lights on" role — you will be architecting systems, writing production-grade code, leading multi-quarter projects across geo-distributed teams, and setting the reliability bar for an infrastructure that thousands of GPU hours depend on every day. You bring deep Kubernetes expertise, strong networking fundamentals, a developer's mindset, and the leadership instincts to navigate ambiguity and drive alignment across cross-functional stakeholders. You have operated systems at massive scale and felt the weight of that responsibility. About the Platform You will be working on a cutting-edge platform designed to train and serve large-scale machine learning models. The platform supports everything from small-scale experimentation to massive, distributed training jobs running on GPU clusters spanning thousands of accelerators. It provides ML engineers and researchers with the tools to onboard, monitor, and scale their workloads — whether a lightweight prototype or a production-grade deep learning model powering real-world applications. Key platform capabilities: Dynamic GPU orchestration using Kubernetes with custom schedulers and resource topology awareness. Training & inference workflows end-to-end pipeline support from data ingestion through model serving. Observability & cost tracking full-stack visibility across compute, network, and storage layers. Self-service developer tooling enabling high-velocity experimentation without platform bottlenecks. Multi-cloud infrastructure primarily AWS with Azure/GCP expansion underway. Your contributions will directly determine the reliability, scalability, and efficiency of this platform — and the speed at which AI teams can innovate. What You’ll Do Architect for scale Design and evolve Kubernetes-native infrastructure capable of running distributed GPU training jobs at massive scale, with an obsession for reliability and efficiency. Lead cross-geo initiatives Own complex, multi-team projects end-to-end — write design docs, align stakeholders across time zones, and drive delivery in ambiguous, fast-moving environments. Codify infrastructure Define and ship cloud infrastructure through IaC (Terraform/Pulumi). Treat infra changes with the same rigor, testing, and review as application code. Build observability Design and maintain deep observability stacks — metrics, distributed tracing, log aggregation, SLO/SLI frameworks — that surface problems before they become incidents. Write production code Build automation, internal tooling, operators, and platform services in Go, Python, or Rust. This is not a YAML-only role. Own reliability Lead incident response, post-mortems, and reliability reviews. Drive systemic fixes, not just workarounds. Set the on-call culture. Solve hard networking problems Debug and resolve complex cluster networking issues — CNI, BGP, service mesh, DNS at scale, east-west traffic, high-throughput tuning. Mentor and grow the team Raise the technical bar through code reviews, architectural guidance, and knowledge sharing with engineers across experience levels. What You Bring Core Requirements: Kubernetes & GPU Infrastructure 10+ years in SRE, platform engineering, or infrastructure roles Expert-level Kubernetes internals: scheduler, kubelet, CRDs, operators, admission controllers Proven experience running GPU/accelerator training workloads at scale Multi-cluster management, federation, and workload placement strategies Helm, Kustomize, GitOps (Flux/ArgoCD) — and knowing when not to use them. Cloud & Infrastructure as Code Deep AWS hands-on experience required (VPC, EKS, EC2, S3, IAM, TGW) Terraform or Pulumi — production-grade, modular, tested CI/CD for infrastructure: drift detection, plan gating, rollback strategies Cost optimization, reserved capacity planning, and spot instance management at scale Observability Prometheus, Grafana, AlertManager — at scale, not just lab setups Distributed tracing: OpenTelemetry, Jaeger, Tempo Log aggregation: Loki, Elasticsearch/OpenSearch SLO/SLI design, error budget policy, and multi-tier alerting Networking Fundamentals Deep TCP/IP, DNS, TLS, HTTP/2, gRPC — not just surface familiarity CNI plugins: Cilium, Calico, Flannel — trade-offs and production behavior Service mesh (Istio/Linkerd), ingress controllers, and API gateways Network debugging under load: packet captures, eBPF traces, kernel counters Coding & System Design Production-quality code in Go, Python, or Rust — you ship, not just script Distributed systems design consistency, availability, failure modes Kubernetes operator authoring and controller-runtime patterns Strong code review culture — you raise the bar, not just the PR count Technical writing: design docs, ADRs, runbooks that others actually read Leadership & Cross-Geo Collaboration Led multi-quarter, cross-functional projects from whiteboard to production Thrives in ambiguity — creates structure and momentum without a perfect spec Experienced in async-first collaboration across distributed, cross-timezone teams Strong communicator: can translate infra complexity to product and leadership audiences Self-driven — you identify the problem, propose the solution, and own the outcome Bonus Points: Azure / GCP hands-on depth ML training pipeline internals eBPF-based observability / networking Chaos engineering & game days Open-source infrastructure contributions Security, compliance & audit experience Why This Role You will write software, not just YAML. This is a coding role as much as it is an operations role. You will work on real AI infrastructure challenges — the kind that research papers get written about, not buzzword slide decks. You will have impact across developer productivity, platform scalability, and service reliability simultaneously. You will lead. This is not an IC-only position — you will shape the technical direction of the team and the platform. You will join a team that values code quality, systems thinking, blameless culture, and genuine ownership. You will architect systems at a scale most engineers never get to touch — thousands of GPUs, petabytes of data movement, milliseconds of scheduling latency that matter If you have seen what breaks at scale and have built the systems, the culture, and the habits to make sure it never breaks again — we want to talk. 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