Software Engineer - Infrastructure (San Francisco)
Compensation: Competitive base salary + meaningful equity
Benefits: Health & dental, gym reimbursement, daily team lunches, 401(K)
About Julius
Were an applied AI lab building coding agents. Julius executes ~1M lines of code every 36 hours for 1M+ users and has generated 3M+ visualizations. All code runs in isolated remote containers that we manage. Were revenuegenerating and backed by AI Grant and founders from Vercel, Notion, Perplexity, Palantir, Replit, Zapier, Intercom, and Dropbox.
The Role
Build and scale the codeexecution platform that powers Juliusacross cloud and onprem environments. We orchestrate 500k+ containers/month and growing. Youll own reliability, performance, and security for multitenant compute.
What Youll Do
Design and operate secure, multitenant container infrastructure with fast startup and smart autoscaling.
Ship onprem/private cloud deployments (Helm/Terraform) with SSO, network controls, and audit logging.
Drive observability (metrics, traces, logs) with clear SLOs; lead incident response.
Optimize images, scheduling, networking, and cost ; build fairuse and ratelimiting controls.
What You Bring
Production Kubernetes and container internals (Docker/containerd); strong networking fundamentals.
Cloud (AWS/GCP/Azure) and IaC (Terraform/Helm).
Monitoring/Logging (Prometheus, Grafana, OpenTelemetry, ELK/Vector).
Security best practices for containerized, multitenant systems.
Nice to Have
gVisor/Kata/Firecracker; Cilium/eBPF; GPU scheduling; serverless autoscaling (KEDA/Knative/Karpenter).
Delivered onprem or airgapped enterprise software.
Youve built an AI side project and enjoy tinkering with LLMs.
Why Julius
Small, senior team; massive impact surface; hard infra problems at meaningful scale.
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