Software Engineer - Infrastructure (Mid - Senior)

Job description

Compensation: Competitive base salary and meaningful equity Benefits: Health & dental insurance, gym reimbursement, daily team meals, commuter benefits We’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 Role: Build 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. Wha...