About

I am David Lang, a Senior Full Stack AI Engineer based in Jacksonville, FL. With extensive experience, I specialize in building scalable backend and web applications using Python, Node.js, and C#.

My work spans developing microservices, event-driven pipelines, and secure REST APIs that support complex business workflows. I am also highly skilled in integrating AI capabilities into real-world products, including LLM-powered features, intelligent automation, and data-driven services.

Technical Expertise

I have a strong foundation in building reliable systems that combine robust software engineering practices with practical AI applications to improve efficiency and user experience.

Backend Systems

I specialize in Python (FastAPI, Django) and Node.js (NestJS, Express). My architecture experience includes building REST & GraphQL APIs, WebSockets, Microservices Architecture, and Event-Driven Systems using RabbitMQ and Kafka.

Frontend Engineering

I am proficient in building responsive and dynamic user interfaces using React, Next.js, Vue.js, TypeScript, and Tailwind CSS.

Databases & Cloud

My data experience spans SQL and NoSQL environments including MySQL, PostgreSQL, MongoDB, and Redis, utilizing ORMs like Prisma and Drizzle. For cloud deployments, I leverage AWS and Azure, orchestrated via Docker, Kubernetes, and Terraform. My CI/CD pipelines are typically built with GitHub Actions.

AI & Automation

I actively integrate AI capabilities like LLMs (OpenAI, Anthropic) into applications via frameworks such as LangChain and LlamaIndex. I build RAG systems and conversational agents to enhance product features, while successfully leveraging AI-assisted development tools like Cursor and Claude Code.

Professional Experience

My journey has included:

  • Pixellot - Owning backend services powering AI-driven sports video and analytics platforms using FastAPI and Django, supporting thousands of concurrent users.
  • SwingVision - Building end-to-end platform features across backend and frontend systems for an AI-powered sports analytics application.
  • FIS - Building enterprise applications using React, TypeScript, and C# that supported thousands of concurrent users while maintaining low API latency.

I hold a Bachelor’s Degree in Computer and Information Sciences from University of North Florida.

Get in Touch

If you are looking for an experienced software engineer to tackle complex technical challenges, I’d love to connect: