Flock Safety is hiring a Software Engineer III, Fullstack/Investigative Agent

Flock Safety is looking for a Software Engineer III, Fullstack/Investigative Agent to build Night Shift, a conversational AI assistant that helps investigators surface critical evidence and close cases faster. You will design and implement the conversational interface, build the orchestration backend that manages LLM interactions and tool calling, and develop integration pipelines connecting our AI to Flock's existing data platform and APIs.

What You'll Do

• Design and implement the conversational interface for Night Shift.
• Build the orchestration backend that manages LLM interactions and tool calling.
• Develop integration pipelines connecting AI to Flock's existing data platform and APIs.
• Shape chat experiences with complex context management.
• Partner with platform teams to design new APIs or leverage existing ones.
• Solve reliability challenges of deploying AI in high-stakes investigative workflows.
• Collaborate closely with ML engineers on prompt engineering and agentic workflows.
• Deliver core conversational UI components and establish patterns for chat interfaces.
• Implement backend orchestration for LLM interactions and tool calling.
• Stand up observability for the AI system (logging, tracing, basic metrics).
• Work with ML team to integrate agentic workflows and refine prompt strategies.
• Own end-to-end features that connect UI, backend orchestration, and data integrations.
• Propose technical improvements to chat quality, performance, or reliability.
• Lead development of a core Night Shift capability that demonstrably improves investigator efficiency.
• Establish patterns for testing and quality in an evolving AI product.
• Influence product roadmap through technical insights and customer feedback.
• Mentor team members on LLM integration patterns or full-stack best practices.
• Own a domain area (e.g., conversation management, data grounding, streaming architecture).

What We're Looking For

• Love for coding and continuous learning, especially in the rapidly evolving LLM space.
• Resourceful problem-solver mindset: excel in ambiguous situations and take initiative to define product direction.
• Strong TypeScript / Node / Express skills for web services and API design (REST, SSE, WebSockets for streaming).
• Modern web framework expertise (React / TypeScript preferred), particularly for conversational UI and chat interfaces.
• Hands-on LLM experience: OpenAI/Anthropic/Gemini APIs, prompt engineering, streaming responses, and conversation context management.
• Familiarity with agentic patterns: function calling, tool use (MCP), and orchestrating multi-step workflows.
• API integration skills: consume existing APIs or design new ones to ground AI in investigative data.
• Database confidence: PostgreSQL and sophisticated SQL for data retrieval.
• Cloud infrastructure basics: Docker, Kubernetes (Helm), AWS services (S3, SQS, API Gateway).
• Product-minded: translate user feedback into technical requirements and make pragmatic tradeoffs.
• Ability to obtain and maintain Criminal Justice Information Services (CJIS) certification as a condition of employment.

Nice to Have

• LLM evaluation tools (LangSmith, Langfuse), vector search/RAG, microservices architecture, or Terraform.

Technical Stack

• TypeScript, Node.js, Express, React
• OpenAI/Anthropic/Gemini APIs
• PostgreSQL, Docker, Kubernetes (Helm)
• AWS (S3, SQS, API Gateway), LangSmith, Langfuse, Terraform

Team & Environment

You will collaborate closely with ML engineers, partner with platform teams, and work with Data Engineering, Product, and Design.

Benefits & Compensation

• Compensation: $140,000-$165,000 + equity: stock options
• Flexible PTO 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: $50,000-lifetime maximum benefit related to eligible adoption, surrogacy, or fertility expenses via Maven.
• Mental health benefits via Spring Health (therapy, coaching, medication management, digital tools).
• Caregiver support via Cariloop.
• Carta Tax Advisor: 1:1 sessions with Equity Tax Advisors.
• Employee Resource Groups (ERGs).
• $150 per month WFH stipend.
• $300 per year Productivity Stipend for Audible, Calm, Masterclass, etc.
• $750 one-time Home Office Stipend.

Flock is an equal opportunity employer. We celebrate diverse backgrounds and thoughts and welcome everyone to apply for employment with us.