---
title: 'Software Engineer - Infrastructure (Mid - Senior) at Julius AI'
canonical: 'https://feeny.ai/job/software-engineer-infrastructure-mid-senior-julius-ai-san-francisco-kmbxwkvjj9kj'
type: 'job'
last_seen: '2026-09-07'
---

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

- **Company:** Julius AI
- **Location:** San Francisco, CA
- **Compensation:** $150k–$200k
- **Employment:** full-time
- **Posted:** 2026-05-21
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.ashbyhq.com/julius/e653d931-d8a4-4647-933e-812d6622f619

## 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.

## 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.

## About Julius AI

## Core Business
- **Primary industry**: AI-powered data analytics and business intelligence
- **Target customers**: B2B – researchers, business analysts, data scientists, startups, and cross-functional teams (marketing, product, ops)
- **Mission**: “Easily analyze, visualize and transform data” – acting as a shared AI data scientist for teams

## Products & Services
- **Julius AI Platform (SaaS)**: Core product that lets users chat with their data in natural language. Generates code (SQL/Python), visualizations, forecasting models, and slide decks. Includes:
  - **Notebooks**: Multi-step, auditable analysis chains with editable code and visualizations.
  - **Teams**: Collaborative workspaces with role-based permissions and shared context.
  - **Data Connectors**: Live connections to databases (BigQuery, Snowflake, PostgreSQL) and Google Drive.
  - **Slides**: Turn analyses into presentation-ready slide decks with charts and tables.
  - **Julius Ultra**: Most advanced model for agentic research and complex reasoning.

## Market Standing
- **Valuation**: Not publicly disclosed
- **Total Funding**: $11.0M (Seed round of $10M led by Bessemer Venture Partners in July/August 2025, plus earlier pre-seed from Y Combinator)
- **Key Metric**: Over 2 million users and more than 10 million visualizations generated
- **Notable Investors/Partners**: Bessemer Venture Partners (lead), Horizon VC, 8VC, Y Combinator, AI Grant; angel investors include Perplexity CEO Aravind Srinivas, Vercel CEO Guillermo Rauch, Twilio co-founder Jeff Lawson. Partnership with Harvard Business School (custom version for required data science course).
- **Growth Signals**: Headcount grew 21.4% YoY to 12 employees; active job postings (4 open roles); rapid feature releases (Slides, Reasoning, Ultra model, GPT-5.5 integration); LinkedIn follower growth of 128.5% year-over-year.

## Competitive Advantages
- **Niche specialization**: Unlike general-purpose AI assistants, Julius is fine-tuned for structured data analysis and visualization, making it a dedicated “AI data scientist.”
- **Transparent, auditable workflows**: Notebooks capture reasoning and code, enabling reproducibility and team collaboration.
- **Live data integration**: Connects directly to databases and spreadsheets, avoiding stale exports.
- **Harvard Business School adoption**: Validates enterprise-grade reliability and pedagogical value.

## Strategic Focus
- Deepening agentic capabilities (Reasoning levels, Ultra model) for complex analytical tasks.
- Expanding collaborative features (Teams, shared workspaces) to move from individual tool to team platform.
- Building enterprise-ready data connectors and security controls (role-based permissions, audit trails).
- Growing user base through freemium model and targeted verticals (finance, marketing, operations).

## Why Work Here
- **Small, high-impact team**: 12 employees means direct influence on product direction and culture.
- **Cutting-edge AI work**: Daily work with latest LLMs (GPT-5.5, proprietary fine-tuned models) and real data engineering challenges.
- **Growth trajectory**: Rapid user adoption (2M+ users), strong investor backing, and expanding feature set signal a fast-paced startup environment.
- **Remote/hybrid**: Headquarters in San Francisco; presence in Philippines; likely flexible (check specific roles).
- **Open roles**: Software Engineer (Infrastructure, Product – Mid/Senior & New Grad) and Growth Intern – ideal for engineers who want to build core AI infrastructure and product.
- **Culture**: “Your AI Data Scientist” – emphasis on empowering users with data, transparency, and collaboration.

## Sources
1. [julius.ai](https://julius.ai/)
2. [TechCrunch – Julius AI seed round](https://techcrunch.com/2025/07/28/ai-data-analyst-startup-julius-nabs-10m-seed-round/)
3. [LinkedIn – Julius AI](https://www.linkedin.com/company/julius-ai)
4. [Julius AI Careers](https://jobs.ashbyhq.com/julius)
5. [Julius AI Docs – What is Julius AI](https://julius.ai/docs/get-started/what-is-Julius-AI)

## Other roles at Julius AI

- [Growth Marketer](https://feeny.ai/job/growth-marketer-julius-ai-san-francisco-5v5hgtygdkgq) — San Francisco, CA
- [Software Engineer - Product (Mid to Senior)](https://feeny.ai/job/software-engineer-product-mid-to-senior-julius-ai-san-francisco-7s5qd142w8zh) — San Francisco, CA
- [Software Engineer - Product (New Grad)](https://feeny.ai/job/software-engineer-product-new-grad-julius-ai-san-francisco-x3xzqtp2m76e) — San Francisco, CA