# Senior Backend Engineer (AI Agent) at BigCommerce

- Company: BigCommerce
- What the company does: Backed by General Catalyst.
- Company website: http://www.bigcommerce.com/
- Type: Startups (AI role)
- Level: Senior
- Location: 2 Locations
- Work setup: On-site
- Posted: 2026-09-14
- Apply by: 2026-10-29
- Apply: https://bigcommerce.wd12.myworkdayjobs.com/en-US/Commerce/job/Austin-TX/Senior-Backend-Engineer--AI-Agent-_JR102796
- Page: https://www.1752.vc/careers/jobs/bigcommerce-senior-backend-engineer-ai-agent/

## About the role

At Commerce, our mission is to empower businesses to innovate, grow, and thrive with our open, AI-driven commerce ecosystem. As the parent company of BigCommerce , Feedonomics , and Makeswift , we connect the tools and systems that power growth, enabling businesses to unlock the full potential of their data, deliver seamless and personalized experiences across every channel, and adapt swiftly to an ever-changing market.

## What they're looking for

- Design, build, and iterate on AI agents in Go/Python using an orchestrator/sub-agent architecture, covering intent interpretation, delegation, and safe action execution
- Own eval-driven development: build and maintain golden datasets, scorers, and regression suites (Braintrust or similar) for critical quality metrics such as discovery recall and quote accuracy
- Develop and refine prompts, model configurations, treat prompts and model settings as versioned, tested artifacts
- Integrate agents with MCP servers and backend tools, defining safe tool-call contracts, approval flows for write actions, and guardrails against prompt injection and abuse
- Instrument agents with tracing, metrics, and cost tracking, use production signals to drive quality improvements
- Collaborate with product designers and frontend engineers to deliver intuitive, useful conversational experiences