Work with our stack: Node.js, TypeScript, NestJS, LangGraph, Vercel AI SDK, PostgreSQL + pgvector, Drizzle ORM, Valkey, LiteLLM, Langfuse, OpenTelemetry, Zod, and Jest on the backend; React, TypeScript, Webpack 5 + Module Federation, yarn workspaces + Lerna, React Testing Library, and Playwright on the frontend; Docker, GitHub Actions, ECR, ArgoCD, the Grafana stack, and AWS S3 for infrastructure. The team builds an AI assistant that understands users' documents and acts on them, an MCP server that exposes pdfFiller's capabilities to external AI clients, and AI-powered improvements to existing product features.