
Senior Software Engineer — Infra Agent Systems UK at Together AI
AI-native cloud platform for scalable inference, model shaping, and pre-training.
Team of 435Series B · $305MBacked by Salesforce Ventures, Kleiner Perkins, NVIDIA
Build and operate production AI agents for GPU infrastructure: diagnosing hardware failures, investigating incidents, gathering live-system evidence, assisting remediation, and automating operational workflows; also build the core agent platform including knowledge graphs, search/retrieval, orchestration, evaluation, and developer tooling; used by infrastructure and datacenter teams via APIs, CLI, dashboards, and Slack; end-to-end ownership across architecture, implementation, testing, deployment, observability, and production operations; 5+ years building production backend, distributed systems, or infrastructure platforms; depth required in at least one of: AI agent systems/orchestration/tool use/evaluation/grounding, knowledge graphs/graph data modeling, or search/retrieval/ranking/RAG/semantic search; must have backend systems design, API design, service boundaries, data modeling, integrations, and experience with Kubernetes, GitOps/IaC, and cloud platforms; comfortable across Go, TypeScript, Python, or Rust; bonus: GPU/datacenter/bare-metal/BMC-IPMI/cluster schedulers, graph databases, event-driven systems/NATS/Kafka, Prometheus/Grafana, or evaluation frameworks for LLM reliability
Remote UK only