Jakub F.

About Me

Jakub is a Senior Full-stack Developer with a decade of experience building web apps using React, Angular, and C# .NET. His biggest project was developing commercial ship management platforms for monitoring and managing ships worldwide. Jakub is a developer that takes ownership of the software solutions he delivers, having a strong emphasis on customer-centricity and business-focused solution development.

Frontend

Backend

Other

Work history

UpStack
UpStack
Senior Full-stack Developer
2021 - Present (4 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

Jit Team
Jit Team
Principal Software Engineer/Architect
2025 - Present
Remote
  • Leading the complete rewrite of a legacy front-end application from a proprietary framework to modern React with TypeScript, managing architectural decisions and technical strategy.

  • Architecting scalable component libraries and design systems to ensure consistency and maintainability across the modernized application.

  • Using AI-powered development tools (Claude Code, Cursor) to accelerate development cycles and improve code quality.

  • Mentoring developers on modern front-end best practices, TypeScript patterns, and migration strategies from legacy systems.

C#.NETReact TypescriptClaude Cursor IDE
Mastercard
Mastercard
Senior Software Engineer
2023 - 2025 (2 years)
Remote
  • Developed innovative open banking payment solutions for Europe using C#, .NET, TypeScript, and React.

  • Was a key contributor to the Connect platform, integrating Mastercard's payment technologies and delivering on schedule.

  • Worked on secure, high-performance payment systems compliant with PSD2 regulations.

  • Created user-friendly APIs and contributed to modernizing Mastercard's payment infrastructure, enhancing efficiency, and improving user experience.

Skruvat.se
Skruvat.se
Senior Software Engineer
2022 - 2023 (1 year)
Remote
  • Worked on front-end and back-end development using React, TypeScript, C#, and .NET, driving web platform enhancements.

  • Enhanced the daily product import process, reducing reload time from 12 hours to 2 hours, enabling substantial expansion of the product catalog without compromising performance.

  • Performed optimization to improve the company's ability to scale its offerings and maintain a competitive edge in the automotive eCommerce market.

  • Demonstrated expertise in full-stack development, with a focus on performance optimization and scalable solutions for eCommerce platforms.

Jit Team
Jit Team
Senior Full-Stack Developer
2015 - 2021 (6 years)
Remote
  • Worked on the development of Signal Maritime, a commercial ship management platform, creating a new web platform for monitoring and managing ships worldwide.

  • Led a team of 4 in developing Chappes, web apps for real estate markets.

  • Worked on Kobo, a web platform for e-books, maintaining existing solutions and creating new features, integrating the platform with payment providers.

  • Managed a stack of multiple websites designed to speed up the process of property inspections for building managers.

IHS Markit
IHS Markit
Software Developer
2014 - 2015 (1 year)
Gdańsk, Poland
  • Worked for a global leader in information, analytics, and solutions for the major industries.

  • Developed and maintained a web platform providing critical information from energy markets (oil, gas, chemicals).

  • Built robust, scalable web applications using C#, ASP.NET MVC, WCF, MSSQL, NHibernate, JavaScript, Angular, and various database and messaging technologies.

 Wydawnictwo Kwantum
Wydawnictwo Kwantum
Software Developer
2013 - 2013
Gdańsk, Poland
  • Worked on the development and maintenance of desktop applications.

  • Developed desktop software products designed to help city officials process their legal documents.

  • Maintained multiple web applications using C#, WPF, WCF, MSSQL, ADO.NET, JavaScript, and other tools/technologies.

Wolters Kluwer
Wolters Kluwer
Software Developer
2011 - 2012 (1 year)
Gdańsk, Poland
  • Worked on developing software for a global leader in information services and solutions for professionals in the health, tax and accounting, risk and compliance, finance, and legal sectors.

  • Designed a solution to internally transform created XML documents into ready-to-publish PDF documents.

  • Developed automation scripts in XSLT and XSL-FO transformations.

XSLTJavaScriptXMLXSL-FOAutomation Scripting

Showcase

Software Developer - Rumio
Software Developer - Rumio
  • Rumio is a startup focused on providing a web app for roommates in Poland.

  • The app features a search functionality with multiple filters for roommate selection.

  • The developer's primary focus is on learning Angular and front-end development.

Full-stack Developer - The Signal Ocean Platform
Full-stack Developer - The Signal Ocean Platform
  • Developed a web application used by several major clients in the shipping industry.

  • Utilized C# .NET on the backend and React.js with TypeScript on the frontend.

  • The project was built with a small team of developers.

Full-stack Developer - Lumber Click
Full-stack Developer - Lumber Click
  • Lumber Click is a browser game inspired by Cookie Clicker and Clicker Heroes.

  • The game was developed by the developer as a learning exercise focusing on React Hooks and Context API.

  • The developer intends to showcase the use of these technologies in the project.

Education

Bachelor's & Master's Degrees, Computer Science
Bachelor's & Master's Degrees, Computer Science
Gdańsk University of Technology - Poland
2010 - 2016 (6 years)