Senior Backend Engineer, Shopping Agents
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Job Description
Senior Backend Engineer building AI shopping agents that find products and complete purchases across the open web. Owning checkout infrastructure, ingestion, search, ranking, and reliability.
Responsibilities:
- Own architecture, code, deploys, monitoring, and on-call for systems that transact around the clock
- Build and operate checkout agents using frontier-model computer-use agents driving live checkouts at scale
- Make checkout-agent failures rare and recovery automatic across changing retailer systems
- Scale product ingestion from hundreds of sources to thousands
- Build infrastructure that generates, validates, and monitors product ingestion
- Develop search and ranking systems using embedding-based retrieval, LLM query understanding, reranking, and caching
- Work directly with the CTO
Requirements:
- 5+ years building backend and infrastructure systems
- Strong Python skills
- Experience owning production systems end to end, including deploys, databases, observability, and on-call
- Ability to address systemic causes rather than isolated incidents
- Ability to work on adversarial systems
- Strong focus on correctness for systems handling customer payments
- Ability to work without a finished specification in a changing roadmap
- Nice to have: experience building AI-first products or LLM-based agents in production
- Nice to have: working knowledge of classic machine learning and deep learning
- Nice to have: background in e-commerce, payments, or fraud and risk infrastructure
Benefits:
- Remote work arrangement
- Full-time employment
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