Vincent Lillis

Designed and developed scalable full-stack applications using React, Next.js, Node.js, NestJS, and AWS for high-traffic event management platforms. Led transition to serverless architecture with AWS Lambda boosting response time by 25%. Built modular backend services, dynamic frontend with Tailwind CSS and Material UI. Managed AWS infrastructure deployment with Terraform and optimized GraphQL/REST APIs for real-time features. Improved CI/CD pipelines and mentored junior engineers. Conducted performance audits enhancing app responsiveness on lower-end devices.

Designed and developed scalable full-stack applications using React, Next.js, Node.js, NestJS, and AWS to support high-traffic event management platforms. Led the transition to a serverless architecture using AWS Lambda, reducing operational overhead and improving application response time by 25%. Developed modular backend services with NestJS for clean architecture and faster feature delivery. Built dynamic frontend interfaces using Tailwind CSS and Material UI. Managed AWS infrastructure using Terraform. Developed GraphQL and RESTful APIs for real-time features including user activity tracking, search, and analytics. Improved CI/CD pipelines with GitHub Actions and automated testing. Mentored junior engineers and conducted performance audits to optimize rendering and memory usage.

Developed backend services and microservices with Node.js, NestJS, and Express supporting thousands of users in eCommerce. Refactored legacy backends to NestJS for scalability and type-safety. Managed AWS infrastructure environments, optimized PostgreSQL performance, integrated third-party APIs such as Stripe and Twilio. Built REST and GraphQL endpoints, authored technical documentation and reusable modules, and delivered business-critical features using Agile and continuous delivery.