# Software Engineer - Infrastructure (Mid - Senior) at Julius AI

Software Engineer - Infrastructure (Mid - Senior) at Julius AI in San Francisco, CA. Full-time, paying $150k–$200k. Posted May 21, 2026.

- Company: Julius AI
- Location: San Francisco, CA
- Job type: Full-time
- Pay: $150k–$200k
- Posted: 2026-05-21
- Apply: https://jobs.ashbyhq.com/julius/e653d931-d8a4-4647-933e-812d6622f619/application
- Source: https://jobmagic.ai/jobs/software-engineer-infrastructure-mid-senior-julius-ai-39qvvf

## 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.

**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 Julius**
Small, senior team; massive impact surface; hard infra problems at meaningful scale.