Senior Software Engineer, AI DevTools & Systems

Coder; Ireland; On-site; EUR 100,000 - 140,000; Full time

Job summary

Coder is hiring a Senior Software Engineer to build and evolve the systems behind our agentic development experience. You will work across the agent harness, integrations, and workflows connecting agents with real development environments.

You will stay hands-on, solve complex technical problems, and collaborate with Product, Design, and other engineers to ship reliable agentic experiences for developers.

Qualifications

• Strong experience building and operating production software systems.
• Hands-on experience with Go.
• Experience with React and TypeScript.
• Experience building systems around LLMs or agentic workflows.
• Familiarity with model APIs, tool calling, context management, or agent loops.
• Good understanding of distributed systems and production reliability.
• Working knowledge of AWS.
• Strong problem-solving skills and comfort working through technical ambiguity.
• Contributes beyond code through reviews, collaboration, and knowledge sharing.

Responsibilities

• Design and build production systems in Go, with work across React and TypeScript where needed.
• Improve agent execution, tool use, context management, streaming, and long-running workflows.
• Extend our provider-agnostic architecture as models and capabilities change.
• Build reliable integrations between agents, workspaces, tools, and developer infrastructure.
• Own projects from implementation through rollout and iteration.
• Contribute to design reviews, code reviews, and technical discussions.
• Partner with Product and Design to turn agent capabilities into useful developer experiences.
• Improve the reliability, performance, and operability of agentic systems.

Skills

Go

React

TypeScript

LLMs/agent workflows

Distributed systems

AWS

Problem solving

Job description

Coder is hiring a Senior Software Engineer to build and evolve the systems behind our agentic development experience. You will work across the agent harness, integrations, and workflows connecting agents with real development environments.

You will stay hands-on, solve complex technical problems, and collaborate with Product, Design, and other engineers to ship reliable agentic experiences for developers.