Decagon
Senior Software Engineer, AI Platform
$200K–$400K
San Francisco +1 · On-site · Senior · Full-time · Posted Feb 11, 2026
- Location
- San Francisco
New York City - Experience
- 4+ years
About the job
Builds and operates Decagon’s AI-native developer platform, enabling engineers and coding agents to build, test, review, and ship production software.
What you'll do
- Design, build, and operate platform systems for agent-driven software development.
- Lead platform projects from problem definition through implementation, rollout, and ongoing operation.
- Partner with engineers to develop secure, reusable tools and improve development speed and quality.
What they ask for
- 4+ years of experience building production software, particularly in backend, infrastructure, platform, or developer tooling.
- Strong programming skills in Python, TypeScript, or another systems-oriented language.
- Experience designing and operating APIs, services, or platforms used by other engineers.
- Understanding of distributed systems, cloud infrastructure, containers, and production reliability.
Nice to have
- Experience building coding agents, agent harnesses, tool-use systems, or sandboxed execution environments.
- Experience with CI/CD, build infrastructure, monorepos, large-scale test automation, or AI code evaluation.
Pay
$200K – $400K USD base salary
Tools
Python, TypeScript, CI/CD, Kubernetes
AI focus
Builds agent execution, tooling, workflows, evaluation, and developer infrastructure to enable AI agents to participate in software development and production operations.
Model-written summary · the original posting is authoritative