Fusion AI Labs

Backend Engineer

• Own checkout agents: architecture, coding, deployments, monitoring, and on-call for systems transacting around the clock
• Build and operate frontier-model computer-use agents driving live checkouts at scale
• Develop infrastructure that handles retailer variability and enables rare failure and automatic recovery
• Scale product ingestion from hundreds of sources to thousands
• Build infrastructure that generates, validates, and monitors itself
• Implement search and ranking using embedding-based retrieval, LLM query understanding, reranking, and caching
• Work directly with the CTO

Senior Backend Engineer, Shopping Agents

• Own architecture, code, deployments, monitoring, and on-call for systems transacting around the clock
• Build and operate checkout agents that drive 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 using self-generating, self-validating, and self-monitoring infrastructure
• Develop search and ranking systems using embedding-based retrieval, LLM query understanding, reranking, and caching
• Work directly with the CTO

Senior Backend Engineer, Shopping Agents

Senior Backend Engineer – Shopping Agents