Pawel Kosciewicz

Experience

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  Trade Company - J.P. Przybylski

  Feb 2004 - Oct 2004

  IT manager

  Software development

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  Login_r Software

  Oct 2004 - Mar 2006

  Programmer and Distributed Database Specialist

  Software development

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  Conecto.net

  Mar 2006 - Sept 2006

  Programmer

  - Crafted websites and campaigns for top brands, including Audi, Volkswagen, Skoda, Reeds (Beer) and charities.

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  Buy4Now

  Dec 2006 - Sept 2008

  Software Developer

  - Developed e-commerce used by top Irish brands.- Contributed to a sales management platform, streamlining operations for Three.ie.

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  Lumen Technologies

  Sept 2008 - Dec 2023

  Lead Architect

  - Led the development of a high-traffic CDN management platform using React, Redux and Node.js, managing more than 120 Tbps of scalable and secure global serving capacity, elevating the customer experience for major clients such as Apple, Sony, Microsoft, Disney, Electronic Arts, Blizzard, TikTok, Amazon, and Sky.- Led a team of developers in the transformation of an internal CDN management portal used by DevOps from monolithic to microservices based architecture utilizing Angular, Node.js, PostgreSQL, Python, Kafka and docker, improving system scalability and reducing server response time by 60%.- Improved Vyvx Broadcast Solutions portal, leveraging Lumen’s global edge network for superior media delivery by refactoring code to use reusable components, resulting in a more responsive user experience.- Architected and developed cloud platform used by clients to securely transfer, store and backup large files using Angular, Akita and Material UI and Node.js.- Designed and patented a CDN live video stream monitor (US8839282), improving media streaming reliability by 20%.- Dockerized existing solutions and for external customers deployed them to GCP using GitHub actions and for internal customers CI/CD pipelines using Jenkins and Docker.- Optimized front-end performance by implementing lazy loading, code splitting, and caching strategies in React and Angular, reducing page load times by 40%.- Integrated RESTful APIs to connect front-end components with server-side logic and databases using both Node.js and Python.- Collaborated with cross-functional teams including designers, product managers, and QA engineers to deliver high-quality software products on time.- Mentored junior developers, conducted code reviews, and established best practices for React and Angular component design and Node.js performance optimization.- Utilized AI technologies, including ChatGPT, to boost productivity and code quality. Show less