I'm Oles Kulczewicz

Improving performance, accessibility, and user experience for large-scale e-commerce platforms while building custom integrations and scalable AWS-based services.

Delivered frontend features and a design system with Next.js/TypeScript, optimized lead conversion, and set up robust testing while collaborating closely with the founding team.

Built and improved full-stack applications with React, Node, and AWS, introducing type safety and testing practices to ensure quality across multiple client projects.

Developed responsive UIs and payment applications for POS terminals, collaborating with integration teams to migrate solutions to next-generation systems.

Acquired strong foundations in theoretical and practical computer science. Completed courses including Calculus, Discrete Mathematics, Numerical Analysis, Algorithms and Data Structures, Databases, Functional Programming, Computer Networks, Computer Systems.