[Hiring] Senior Software Engineer @Flock

Role Description

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. This isn't just about wrapping an LLM; it’s about building the "brains" of an investigative agent.

• Design the orchestration backend that manages complex LLM interactions.
• Develop high-performance integration pipelines connecting our AI to Flock's massive data platform.
• Build the agentic framework that allows Nightshift to "act" on behalf of investigators.
• Partner with ML engineers on agentic workflows and platform teams to design robust APIs.
• Ensure our system remains performant as we process billions of data points daily.

Qualifications

• 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.
• Deep understanding of OpenAI/Anthropic/Gemini APIs , prompt engineering, and managing complex conversation state/context.
• Proven ability to build seamless API integrations with LLMs.
• Strong database confidence with PostgreSQL , OLAP Databases , and Redis .
• Experience with microservice-oriented architecture and designing for scale.
• Proficient with AWS services , Kubernetes (EKS) , Docker , and CI/CD build tooling.
• 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).

Requirements

• 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.
• 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.
• 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 can solve untapped investigator pain points.

Benefits

• Flexible PTO : We seriously mean it, plus 11 company holidays.
• Fully-paid health benefits plan for employees: including Medical, Dental, and Vision and an HSA match.
• Family Leave : All employees receive 12 weeks of 100% paid parental leave. Birthing parents are eligible for an additional 6-8 weeks of physical recovery time.
• Fertility & Family Benefits : We have partnered with Maven, a complete digital health benefit for starting and raising a family. Flock will provide a $50,000-lifetime maximum benefit related to eligible adoption, surrogacy, or fertility expenses.
• Spring Health : Offers a variety of mental health benefits, including therapy, coaching, medication management, and digital tools.
• Caregiver Support : We have partnered with Cariloop to provide our employees with caregiver support.
• Carta Tax Advisor : Employees receive 1:1 sessions with Equity Tax Advisors.
• ERGs : We offer three ERGs today - Women of Flock, Flock Proud, and Melanin Motion.
• WFH Stipend : $150 per month to cover the costs of working from home.
• Productivity Stipend : $300 per year for various productivity tools.
• Home Office Stipend : A one-time $750 to help you create your dream office.