Senior Software Engineer, AI Platform

Job summary

Responsibilities

We’re looking for an experienced software engineer to help build Decagon’s AI-native developer platform.

• Design, build, and operate the core platform behind agent-driven software development at Decagon.
• Lead ambitious platform projects from an ambiguous problem through technical design, implementation, rollout, and long-term evolution.
• Turn successful experiments into secure, reusable abstractions that engineering teams can adopt without becoming experts in the underlying infrastructure.
• Partner closely with engineers across the company to understand bottlenecks, prototype solutions, and drive adoption.
• Improve the speed and quality of software development through better agent tooling, testing, review, and automation.

What they're looking for

• Experience building coding agents, tool-use systems, agent harnesses, or sandboxed execution environments.
• Experience with CI/CD systems, build infrastructure, monorepos, or large-scale test automation.
• Built evaluation, testing, or review systems for AI-generated code.
• Experience with Kubernetes, infrastructure as code, secrets management, or identity and access systems.
• Built an internal developer platform or shared tooling that achieved meaningful adoption across an engineering organization.

Tech stack

• Python
• TypeScript
• Kubernetes