Software Engineer - Infrastructure (Mid - Senior)

About Julius

Build and analyze things with AI

The role

**Compensation:** Competitive base salary + meaningful equity\**Benefits:** Health & dental, gym reimbursement, daily team meals, commuter benefit## About JuliusWe’re 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 code sandboxes (**isolated remote containers**) that we manage. We’re revenue‑generating and backed by AI Grant, YCombinator, Bessemer Venture Partners and the founders from Vercel, Notion, Perplexity, Palantir, Replit, Zapier, Intercom, and Dropbox.## The RoleBuild and scale the **code‑execution sandboxes** that power Julius across cloud environments (AWS and GCP). We orchestrate **500k+ containers/month** and growing. You’ll own reliability, performance, and security for multi‑tenant compute. ## What You’ll Do* Design and operate secure, multi‑tenant **container infrastructure** with fast startup and smart autoscaling.* Ship 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 fair‑use and rate‑limiting 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, multi‑tenant systems.## Nice to Have* gVisor/Kata/Firecracker; Cilium/eBPF; GPU scheduling; serverless autoscaling (KEDA/Knative/Karpenter).* You’ve built an AI side project and enjoy tinkering with LLMs.## Why JuliusSmall, senior team; massive impact surface; hard infra problems at meaningful scale.

Skills

• Amazon Web Services (AWS)
• Google Cloud
• Kubernetes
• PostgreSQL
• Distributed Systems
• Docker
• Terraform