Senior Software Engineer for Agentic Systems (Go)

Coder; Poland; On-site; PLN 240,000 - 360,000; Full time

Job summary

Coder's Agentic Engineering team seeks a Senior Software Engineer to build and evolve the systems behind our agentic development experience. You’ll work across the agent harness, integrations, and workflows that connect agents with real development environments.

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

Qualifications

• Strong experience building 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.

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/agentic workflows

Distributed systems

AWS

Kubernetes

Linux

Tools

Prometheus

Grafana

Postgres

GitHub Actions

Job description

Coder's Agentic Engineering team seeks a Senior Software Engineer to build and evolve the systems behind our agentic development experience. You’ll work across the agent harness, integrations, and workflows that connect agents with real development environments.

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