Senior Software Engineer - AI Agentic Systems

Openkrill; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Coder is seeking a Senior Software Engineer in the United States to build and evolve the systems behind our agentic development experience. You will work across the agent harness, integrations, and workflows that connect agents with real development environments.

This role emphasizes hands-on Go development, React/TypeScript, and deploying reliable agentic systems, with opportunities to design, implement, and roll out features while collaborating with Product, Design, and other engineers.

Qualifications

• 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.
• Someone who contributes beyond their own 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.
• Collaborate across teams to deliver scalable, maintainable solutions.

Skills

Go

React

TypeScript

LLMs/agentic workflows

Model APIs/tool calling

Distributed systems

AWS

Problem solving

Collaboration & reviews

Tools

Go

React

TypeScript

AWS

Kubernetes

Docker

Linux

Job description

Coder is seeking a Senior Software Engineer in the United States to build and evolve the systems behind our agentic development experience. You will work across the agent harness, integrations, and workflows that connect agents with real development environments.

This role emphasizes hands-on Go development, React/TypeScript, and deploying reliable agentic systems, with opportunities to design, implement, and roll out features while collaborating with Product, Design, and other engineers.