Senior AI Agent Engineer – Remote

Commerce; Myrtle Point (OR); Remote; USD 116,000 - 195,000; Full time

Job summary

Commerce is seeking a Senior Backend Engineer to design and orchestrate AI agents for the B2B commerce lifecycle. You will shape sub-agent architecture, tool integration, and prompt strategies while ensuring trustworthy, eval-driven quality in production.

You’ll collaborate across product and frontend teams to deliver robust conversational experiences and scalable APIs. Remote-first with regional flexibility, competitive salary, and growth opportunities.

Qualifications

• 5+ years in backend or full-stack development with hands-on AI/LLM applications.
• Bachelor’s degree in CS, EE, SW, CE, MIS or equivalent experience.
• Strong development skills in Go/Python/Ruby/PHP.
• Experience working with LLMs (Gemini, Anthropic, OpenAI, etc.) in production systems.
• Experience with LLM evaluation: building datasets, defining scorers/metrics, and using eval results to drive iteration.
• Strong understanding of prompt engineering, tool/function calling, and agent orchestration patterns.
• Deep experience designing and building APIs (gRPC, GraphQL, REST) and integrating data across systems.
• Hands-on experience building MCP servers or LLM tool integrations.
• Excellent problem-solving skills and ability to work in a fast-paced, exploratory environment.
• Preferred: Experience with agent frameworks (Google ADK, LangChain/LangGraph, Semantic Kernel, or similar) and evaluation/observability platforms (Braintrust, LangSmith, or similar).

Responsibilities

• Design, build, and iterate on AI agents in Go/Python using an orchestrator/sub-agent architecture.
• Own eval-driven development: build and maintain golden datasets, scorers, and regression suites for quality metrics.
• Develop and refine prompts, model configurations; treat prompts and model settings as versioned artifacts.
• Integrate agents with MCP servers and backend tools, defining safe tool-call contracts and guardrails.
• Instrument agents with tracing, metrics, and cost tracking; use production signals to improve quality.
• Collaborate with product designers and frontend engineers to deliver conversational experiences.
• Build proof-of-concept agents quickly, then harden them to GA quality.
• Drive architecture decisions and mentor engineers in agent engineering practices.

Skills

Backend development

Agentic AI / LLM apps

Go / Python / Ruby / PHP

LLM evaluation / datasets

Prompt engineering

APIs (REST/GraphQL/gRPC)

MCP servers integration

Tool integration & guardrails

Collaboration & communication

Mentorship & leadership

Education

Bachelor’s in CS/EE/SW/CE/MIS

Tools

Go

Python

Google ADK

LangChain

Semantic Kernel

MCP servers

Job description

Commerce is seeking a Senior Backend Engineer to design and orchestrate AI agents for the B2B commerce lifecycle. You will shape sub-agent architecture, tool integration, and prompt strategies while ensuring trustworthy, eval-driven quality in production.

You’ll collaborate across product and frontend teams to deliver robust conversational experiences and scalable APIs. Remote-first with regional flexibility, competitive salary, and growth opportunities.