Staff Software Engineer - Architecting Agentic Systems

coder; United Kingdom; On-site; GBP 110,000 - 170,000; Full time

Job summary

Coder is seeking a Staff Software Engineer on the Agentic Engineering team to shape the systems behind our agentic development experience. You will work across the agent harness, integrations, and workflows that connect agents with real development environments while staying hands-on and guiding the team's technical direction.

You will lead complex projects from ambiguity through production, mentor engineers, and collaborate with Product and Design to create clear, useful agent experiences.

Qualifications

• Deep experience building and operating production software systems.
• Strong hands-on experience with Go.
• Experience with React and TypeScript.
• Hands-on experience building systems around LLMs and agentic workflows.
• Experience with model APIs, tool calling, context management, or agent loops.
• Strong distributed systems knowledge.
• Working knowledge of AWS.

Responsibilities

• Set technical direction across Coder's agent harness, integrations, and workflows.
• Design and build production systems in Go, with work across React and TypeScript where needed.
• Evolve agent execution, tool use, context management, streaming, and long-running workflows.
• Extend our provider-agnostic architecture as models and capabilities change.
• Lead complex projects from early ambiguity through production.
• Raise the engineering bar through design reviews, code reviews, and technical mentorship.
• Partner with Product and Design on clear, useful agent experiences.
• Improve the reliability, performance, and operability of agentic systems.

Skills

Go

Distributed systems

AWS

Frontend with React/TypeScript

Leadership

Tools

PostgreSQL

Kubernetes

Docker

AWS

Job description

Coder is seeking a Staff Software Engineer on the Agentic Engineering team to shape the systems behind our agentic development experience. You will work across the agent harness, integrations, and workflows that connect agents with real development environments while staying hands-on and guiding the team's technical direction.

You will lead complex projects from ambiguity through production, mentor engineers, and collaborate with Product and Design to create clear, useful agent experiences.