Senior Software Engineer, Backend/Investigative Agent

Flock is a leading safety technology platform helping communities thrive by taking a proactive approach to crime prevention and security. We’re hiring a Senior Backend Engineer to lead the architectural evolution of Nightshift, a conversational AI assistant that helps investigators surface critical evidence and close cases faster.

Requirements

• Love for writing clean, performant code and a track record of building production-grade backend systems.
• Strong proficiency in Python and TypeScript (Node) for building scalable web services, open to Go as well.
• Experience with agentic patterns, including function calling, tool use (MCP), and orchestrating multi-step LLM workflows.
• Ability to write and optimize complex SQL queries and data access patterns to ensure LLMs are grounded in real-time data without sacrificing latency or system performance.
• Deep understanding of OpenAI/Anthropic/Gemini APIs, prompt engineering, and managing complex conversation state/context.
• Proven ability to build seamless API integrations with LLMs, managing the bridge between unstructured model outputs and structured internal services through robust error handling and schema validation.
• Strong database confidence with PostgreSQL, OLAP Databases, and Redis.
• Experience with microservice-oriented architecture and designing for scale (we handle 1B+ images daily).
• Proficient with AWS services, Kubernetes (EKS), Docker, and CI/CD build tooling.
• You thrive in ‘zero-to-one’ environments, taking ambiguous problems and turning them into technical roadmaps.
• Experience with LLM evaluation (LangSmith/Langfuse), vector search/RAG, or infrastructure-as-code (Terraform).

Benefits

• Flexible PTO
• Fully-paid health benefits plan for employees
• Family Leave
• Fertility & Family Benefits
• Spring Health
• Caregiver Support
• Carta Tax Advisor
• ERGs
• WFH Stipend
• Productivity Stipend
• Home Office Stipend

Originally posted on Himalayas