Staff Full-Stack Engineer in San Francisco, California at Codegen

Seeking 2–3 experienced full-stack engineers to lead key backend initiatives and help scale Codegen’s core systems from prototype to production. Ideal candidate would have 5+ years of software experience, strong backend engineering skills with Python, and end-to-end ownership of production systems.
About the role You’ll own and evolve key backend systems that power the Codegen platform. This includes distributed task execution for AI-driven “solves,” developer sandbox orchestration and lifecycle management, and systems for ingesting and retrieving customer knowledge. You'll prototype new features end-to-end, then scale and harden them for production use. Working closely with a high-trust, fast-moving team across product, infrastructure, and AI, you'll ship real systems used by developers daily — from Slack workflows to production environments.
QualificationsMinimum Qualifications:

• 5+ years of professional software experience
• Strong backend engineering skills with Python (or adjacent ecosystems)
• Experience designing, building, and maintaining production systems end-to-end
• Ability to work independently and drive large technical projects
• Familiarity with system architecture, stateful services, and distributed compute
• Prior experience at high-performance teams (e.g., Stripe, Palantir, Uber)

Bonus Experience:

• Building developer bots or integrations in Slack, Discord, etc.
• Exposure to AI/ML developer tooling (LangChain, OpenAI, Anthropic, etc.)
• Comfortable leading cross-functional initiatives or mentoring engineers
• Familiarity with fast-paced, early-stage product iteration cycles

Responsibilities

• Own and evolve core backend systems, including:
  • Distributed task execution for AI-powered “solves”
  • Developer sandbox orchestration and lifecycle management
  • Customer knowledge ingestion and retrieval
• Prototype features end-to-end, then harden them for scale and reliability
• Collaborate with a high-trust, fast-moving team across product, infra, and AI
• Ship real systems that developers use daily — from Slack to production

Our tech stack

• Backend: Python/FastAPI/SQLAlchemy (Hosted on Modal)
• Frontend: Typescript/Remix/Prisma/Drizzle (Hosted on Vercel)
• AI: Langchain, OpenAI + Anthropic APIs

Codegen is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all individuals regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, age, protected veteran status, or any other characteristic protected by federal, state, or local laws. For California applicants, Codegen complies with all applicable state and local laws, including the California Fair Employment and Housing Act (FEHA), which prohibits discrimination and harassment in employment based on characteristics such as race, gender, disability, and more. We encourage candidates of all backgrounds to apply and are dedicated to fostering a workplace that is inclusive and supportive for everyone.