Senior Backend Engineer (AI Agent)
BigCommerce2 months ago
Base Salary
$116k - $195k/yr
Responsibilities
- Design, build, and iterate on AI agents in Go or Python using orchestrator/sub-agent architectures.
- Own eval-driven development through golden datasets, scorers, regression suites, and quality metrics.
- Develop and refine prompts and model configurations as versioned, tested artifacts.
- Integrate agents with MCP servers and backend tools, defining safe tool-call contracts, approval flows, and abuse guardrails.
- Instrument agents with tracing, metrics, and cost tracking, and use production signals to improve quality.
- Collaborate with product designers and frontend engineers on conversational experiences.
- Build proof-of-concept agents, harden them for general availability, drive architecture decisions, and mentor engineers.
Requirements
- 5+ years of backend or full-stack software development experience with hands-on agentic AI/LLM application development.
- Preferred minimum bachelor’s degree in CS, EE, SW, CE, or MIS, or equivalent experience.
- Strong development skills in a major language such as Go, Python, Ruby, or PHP.
- Production experience with LLMs such as Gemini, Anthropic, or OpenAI.
- Experience building LLM evaluation datasets, scorers, metrics, and iteration workflows.
- Strong understanding of prompt engineering, tool or function calling, and agent orchestration.
- Deep experience designing APIs with gRPC, GraphQL, or REST and integrating data across systems.
- Hands-on experience building MCP servers or LLM tool integrations.
- Experience with agent frameworks such as Google ADK, LangChain/LangGraph, or Semantic Kernel is preferred.
- Experience with evaluation or observability platforms such as Braintrust or LangSmith is preferred.
- Experience with RAG systems, retrieval quality tuning, e-commerce platforms or SaaS product development, conversational AI, or natural language processing is preferred.
- Strong problem-solving, collaboration, communication, execution, and delivery skills.
Benefits
- Austin- or Atlanta-area candidates follow a hybrid schedule of three days per week in the office.
- The role may be eligible for variable compensation, equity, and benefits in accordance with local policies.
- The company provides an inclusive and accessible hiring experience and supports accommodations during recruitment.
Categories
About BigCommerce
BigCommerce, powered by Commerce (Nasdaq: CMRC), is the flexible enterprise ecommerce platform built for growth without compromise. Our open architecture makes it easy for brands and B2B sellers to scale, adapt, and connect to the tools that solve their unique business challenges — without being locked into rigid systems. Learn more at bigcommerce.com If you are interested in exploring career opportunities with us, we invite you to follow the Commerce LinkedIn Jobs page for the latest updates on open positions. #BigCommerce #PoweredByCommerce