Przemysław Jóźwiak

Owned front-end development and long-term maintenance of a Lerna-based monorepo with five production applications supporting a bioinformatics data visualization platform. Led development of complex product areas including session management, structure views, table views, search and state handling, and scientific data visualization features. Improved front-end architecture, performance, reliability, dependency health, and code quality across React, Next.js, TypeScript, GraphQL, and OpenAPI-based applications. Handled engineering infrastructure tasks such as Dockerfiles, GitHub Actions workflows, security vulnerability remediation, testing, and production build stability. Maintained and extended a Node.js GraphQL API gateway orchestrating access to internal microservices and supporting frontend data needs. Contributed to an AI agent project built with Python and Chainlit, gaining practical Python exposure through agent workflows and application integration.

Built and maintained frontend features for production betting platforms delivered to multiple clients. Contributed to React, Next.js, TypeScript, and JavaScript web applications with a focus on scalable UI, performance, and maintainability. Helped build the forBet client frontend from scratch as part of a small delivery team, delivering UI improvements in a fast-moving commercial environment while balancing product requirements, reliability, and user experience.

Developed and customized e-commerce storefront layouts for client projects. Built and adjusted base templates using JavaScript, CSS, and LESS. Improved template performance and supported client-facing changes for commercial online stores.