Job Description
Who is Flock? Flock is the leading safety technology platform, helping communities thrive by taking a proactive approach to crime prevention and security. Our hardware and software suite connects cities, law enforcement, businesses, schools, and neighborhoods in a nationwide public-private safety network. Trusted by over 5,000 communities, 4,500 law enforcement agencies, and 1,000 businesses, Flock delivers real-time intelligence while prioritizing privacy and responsible innovation. We’re a high-performance, low-ego team driven by urgency, collaboration, and bold thinking. Working at Flock means tackling big challenges, moving fast, and continuously improving. It’s intense but deeply rewarding for those who want to make an impact. With nearly $700M in venture funding and a $7.5B valuation, we’re scaling intentionally and seeking top talent to help build the impossible. If you value teamwork, ownership, and solving tough problems, Flock could be the place for you. The Opportunity We're hiring a Senior Software Engineer to drive the architectural evolution of Nightshift , a conversational agent that helps investigators surface critical evidence and close cases faster. You’ll lead the effort to build reliable backend systems that connect a conversational interface to a large, complex data platform. You will design the orchestration backend that manages complex LLM interactions, develop high-performance integration pipelines connecting Nightshift to Flock's massive data platform, and build the agentic framework that allows Nightshift to "act" on behalf of investigators. This is a ground-floor opportunity to solve the reliability and scaling challenges of real-time investigative workflows. You’ll partner with ML engineers on agentic workflows and platform teams to design robust APIs that keep the system accurate and performant as we process billions of data points daily. The Skillset Love for writing clean, performant code and a track record of building production-grade backend systems. Strong proficiency in Python or TypeScript (Node) for building scalable web services. 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. Strong database confidence with PostgreSQL, OLAP Databases, and Redis. You know how to use the right tool for the job to ensure fast retrieval. A strong product instinct and a track record of shaping what you build based on direct customer feedback. Experience with microservice-oriented architecture and designing for scale (we handle 1B+ images daily). Experience with agentic patterns, including function calling, tool use (MCP), and orchestrating multi-step LLM workflows. Experience with OpenAI/Anthropic/Gemini APIs, prompt engineering, and managing complex conversation state/context. Proven ability to bridge unstructured LLM outputs and structured internal services, with robust error handling and schema validation. 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). 90 Days at Flock The First 30 Days Familiarize yourself with Flock’s investigative workflows and the massive data pipelines that power our platform. Pair with ML (agentic systems), Data Engineering (investigative datasets), and Platform teams to understand the existing API landscape. Complete your first push to production. Pick up initial sprint tickets focused on API integrations, backend bug fixes, or performance tuning for LLM streaming. The First 60 Days Implement the backend orchestration layer for LLM tool calling and multi-step reasoning. Design and build the "connectors" that allow Night Shift to securely and efficiently query Flock’s core data services. Stand up robust tracing and logging for the AI system to monitor agentic decision-making and reliability. Own end-to-end backend features that connect the LLM to our internal APIs, ensuring low-latency responses for investigators. 90 Days & Beyond Lead the development of a core Nightshift capability—like automated lead generation or cross-camera correlation—that demonstrably closes cases faster. Establish best practices for testing and deploying AI agents within a microservices environment. Influence the product direction by identifying how new backend capabilities or AI breakthroughs c