Jan Lewandowski

~ Working as an independent Senior Full Stack Developer, delivering scalable and production-ready solutions for international clients. ~ Handling end-to-end development including system design, implementation, and cloud deployment. ~ Building microservices-based systems using .NET, ASP.NET Core, React, and Angular. ~ Focused on performance optimization, secure authentication, and distributed systems using Redis, RabbitMQ, and Kafka. ~ Providing technical consulting on architecture and scalability.

~ Worked on developing and scaling enterprise applications using .NET Core and modern web technologies. ~ Designed microservices architectures and built high-performance APIs using REST and gRPC. ~ Improved system efficiency through caching, asynchronous processing, and database optimization. ~ Contributed to cloud deployment, CI/CD pipelines, and containerization using Docker and Kubernetes. ~ Collaborated with teams to deliver reliable production systems.

~ Worked on developing and scaling enterprise applications using .NET Core and modern web technologies. ~ Designed microservices architectures and built high-performance APIs using REST and gRPC. ~ Improved system efficiency through caching, asynchronous processing, and database optimization. ~ Contributed to cloud deployment, CI/CD pipelines, and containerization using Docker and Kubernetes. ~ Collaborated with teams to deliver reliable production systems.

~ Developed and maintained full-stack applications using ASP.NET Core, Angular, and React. ~ Built REST APIs, managed databases, and implemented authentication systems. ~ Contributed to improving application structure and scalability. ~ Worked in Agile teams on feature development, bug fixing, and system enhancements. ~ Strengthened both frontend and backend development skills.