I'm a passionate Front End Developer with over twenty years of experience delivering impactful digital products for global audiences. I'm a lifelong learner and an analytical thinker who always considers the bigger picture but will work tirelessly to determine the smallest detail.

Tomasz Kozysa

I'm a passionate Front End Developer with over twenty years of experience delivering impactful digital products for global audiences. I'm a lifelong learner and an analytical thinker who always considers the bigger picture but will work tirelessly to determine the smallest detail.

Available to hire

I’m a passionate Front End Developer with over twenty years of experience delivering impactful digital products for global audiences.

I’m a lifelong learner and an analytical thinker who always considers the bigger picture but will work tirelessly to determine the smallest detail.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
See more

Language

English
Fluent
Polish
Fluent

Work Experience

Contract Vue JS Developer at Best At Digital
November 30, 2024 - September 4, 2025
Developed online courses for clients like GSK, Deloitte, FPH, Nissan, and HSBC. Collaborated with designers, developers, and QA managers to implement WCAG 2.2 AA standards. Delivered API-driven profile pages and surveys integrated with Cornerstone SBX API. Proposed rem-based media queries, reducing development and accessibility testing time by approximately 10%.
Freelance Developer/Designer at Oxford University Press
March 31, 2024 - September 4, 2025
Produced an interactive web app developed with Vue 3, designed and prototyped using Figma.
Freelance Developer at Cititec.com
June 30, 2023 - September 4, 2025
Developed a system of responsive components for WordPress X-theme builder. Delivered multiple responsive pages with bespoke customisations.
Contract UX/UI Developer at Intuit
August 31, 2022 - September 4, 2025
Migrated marketing pages to a React/Next.js stack for the French QuickBooks site. Developed a responsive homepage using React/Next.js. Maintained existing pages and implemented updates using Gatsby.
Contract Front End Developer at Paul Smith
March 31, 2022 - September 4, 2025
Contributed to the Paul Smith e-commerce site redesign using Vue.js 3, Tailwind, and GraphQL. Delivered key components including Wishlist, Bag, and Language Selector. Delivered responsive user profile pages, integrated Google Places API. Worked closely with the backend team (Laravel, Magento) to streamline production.
Contract UX/UI Developer at Intuit
July 31, 2021 - September 4, 2025
Maintained strategic QuickBooks web pages using React and Gatsby. Produced A/B tests for interactive components and marketing campaigns. Delivered marketing takeovers, improving user engagement with new campaigns.
Volunteer Mentor/Admin at Code Your Future
April 30, 2021 - September 4, 2025
Volunteered for weekend UX workshops, mentoring students in applying UX principles. Administered financial support for students, ensuring fair and timely access to resources. Mentored junior developers to deliver a Next Of Kin website using React.js and Gatsby.
Freelance Developer/Designer at MediaGang
November 30, 2019 - September 4, 2025
Produced a real-time delivery tracking application, built using Firebase, Google Maps API and Nuxt.js.
Contract Developer at Heatherwick Studio
March 31, 2018 - September 4, 2025
Delivered bespoke applications to support studio processes and knowledge sharing. Developed a WordPress-based studio knowledge Hub with shared resources and a rich library of internal articles, along with the digital archive of all studio projects.
Freelance Designer/Producer at Visit Britain/Yahoo!
December 31, 2014 - September 4, 2025
Delivered advertising formats in 7 languages that ran across 13 countries for the biggest campaign promoting Great Britain – BRITAIN is GREAT.
Freelance Designer/Developer at Channel 4
December 31, 2014 - September 4, 2025
Produced broadcast supporting websites for the Summer Paralympics 2012 and the Winter Paralympics 2014.
Freelance Designer at The Independent
February 28, 2013 - September 4, 2025
Designed a components system for the new platform that streamlined multiple layout design processes.
Freelance Developer/Designer at Yahoo! UK and EMEA
December 31, 2011 - September 4, 2025
Produced advertising format prototypes for Yahoo! EMEA Research. Developed a web application with research results.
Senior Interaction Designer at Yahoo!
September 30, 2009 - September 4, 2025
Started as a web designer producing and supporting delivery of interactive advertising content for Yahoo! Europe home pages. Later promoted to focus on editorial and advertorial content design for international campaigns.
Digital Designer at New Media Maze
December 31, 2006 - September 4, 2025
Worked as a web designer and ActionScript developer. Produced advertising kits for European markets, interaction-rich websites, and applications.
Contract Vue JS Developer at Best At Digital
November 1, 2024 - September 4, 2025
Developed online courses for clients such as GSK, Deloitte, FPH, Nissan, and HSBC. Collaborated with designers, developers, and QA managers to implement WCAG 2.2 AA standards. Delivered API-driven profile pages and surveys integrated with Cornerstone SBX API. Proposed rem-based media queries, reducing development and accessibility testing time by approximately 10%.
Freelance Developer/Designer at Oxford University Press
March 1, 2024 - September 4, 2025
Produced an interactive web app developed with Vue 3, designed and prototyped using Figma.
Freelance Developer at Cititec.com
June 1, 2023 - September 4, 2025
Developed a system of responsive components for WordPress X-theme builder. Delivered multiple responsive pages with bespoke customisations.
Contract UX/UI Developer at Intuit
August 1, 2022 - September 4, 2025
Migrated marketing pages to a React/Next.js stack for the French QuickBooks site. Developed responsive homepage using React/Next.js. Maintained existing pages and implemented updates using Gatsby.
Contract Front End Developer at Paul Smith
March 1, 2022 - September 4, 2025
Contributed to the Paul Smith e-commerce site redesign using Vue.js 3, Tailwind, and GraphQL. Delivered key components including Wishlist, Bag, and Language Selector. Delivered responsive user profile pages, integrated Google Places API. Worked closely with backend team (Laravel, Magento) to streamline production.
Contract UX/UI Developer at Intuit
July 1, 2021 - September 4, 2025
Maintained strategic QuickBooks web pages using React and Gatsby. Produced A/B tests for interactive components and marketing campaigns. Delivered marketing takeovers, improving user engagement with new campaigns.
Volunteer Mentor/Admin at Code Your Future
April 1, 2021 - September 4, 2025
Volunteered for weekend UX workshops, mentoring students in applying UX principles. Administered financial support for students, ensuring fair and timely access to resources. Mentored junior developers to deliver a Next Of Kin website using React.js and Gatsby.
Freelance Developer/Designer at MediaGang
November 1, 2019 - September 4, 2025
Produced a real-time delivery tracking application built using Firebase, Google Maps API and Nuxt.js.
Contract Developer at Heatherwick Studio
March 1, 2018 - September 4, 2025
Delivered bespoke applications to support studio processes and knowledge sharing. Developed a WordPress-based studio knowledge hub with shared resources and a rich library of internal articles, along with the digital archive of all studio projects.
Freelance Designer/Producer at Visit Britain/Yahoo!
January 1, 2014 - September 4, 2025
Delivered advertising formats in 7 languages running across 13 countries for the major campaign promoting Great Britain - BRITAIN is GREAT.
Freelance Designer/Developer at Channel 4
January 1, 2014 - September 4, 2025
Produced broadcast supporting websites for the Summer Paralympics 2012 and Winter Paralympics 2014.
Freelance Designer at The Independent
February 1, 2013 - September 4, 2025
Designed a components system for the new platform that streamlined multiple layouts design process.
Freelance Developer/Designer at Yahoo! UK and EMEA
January 1, 2011 - September 4, 2025
Produced advertising format prototypes for Yahoo! EMEA Research. Developed a web application with research results.
Senior Interaction Designer at Yahoo!
September 1, 2009 - September 4, 2025
Started at Yahoo! Ad Technology as a web designer producing and supporting delivery of interactive advertising content for the Yahoo! Europe home pages. Later focused on editorial and advertorial content design for international campaigns.
Digital Designer at New Media Maze
December 1, 2006 - September 4, 2025
Worked as a web designer and ActionScript developer producing advertising kits for European markets, interaction-rich websites, and applications.
Contract Vue JS Developer at Best At Digital
November 1, 2024 - November 1, 2024
Developed API-driven online courses and surveys; collaborated with designers, developers and QA managers to implement WCAG 2.2 AA standards; delivered profile pages and surveys using Cornerstone SBX API; proposed rem-based media queries to reduce development and accessibility testing time by ~10%.
Freelance Developer/Designer at Oxford University Press
March 1, 2024 - March 1, 2024
Produced an interactive web app (Vue 3) and designed/prototyped in Figma.
Freelance Developer at Cititec.com
June 1, 2023 - June 1, 2023
Developed a system of responsive components for a WordPress X-theme builder and delivered multiple responsive pages with bespoke customisations.
Contract UX/UI Developer at Intuit
August 1, 2022 - August 1, 2022
Migrated marketing pages to a React/Next.js stack for the French QuickBooks site; built a responsive homepage; maintained pages and implemented updates using Gatsby.
Contract Front End Developer at Paul Smith
March 1, 2022 - March 1, 2022
Contributed to the e‑commerce site redesign using Vue.js 3, Tailwind and GraphQL; delivered key components (Wishlist, Bag, Language Selector), responsive user profile pages, and Google Places API integration; collaborated closely with backend teams to streamline production.
Contract UX/UI Developer at Intuit
July 1, 2021 - July 1, 2021
Maintained strategic QuickBooks web pages; produced A/B tests for interactive components and marketing campaigns; delivered marketing takeovers to improve user engagement.
Volunteer Mentor/Admin at Code Your Future
April 1, 2021 - April 1, 2021
Mentored weekend UX workshops; administered financial support to students; mentored junior developers to deliver a Next Of Kin website using React.js and Gatsby.
Freelance Developer/Designer at MediaGang
November 1, 2019 - November 1, 2019
Produced a real-time delivery tracking application using Firebase, Google Maps API and Nuxt.js.
Contract Developer at Heatherwick Studio
March 1, 2018 - March 1, 2018
Delivered bespoke applications to support studio processes and knowledge sharing; developed a WordPress-based studio knowledge hub with a rich library of internal articles and a digital archive of studio projects.
Freelance Designer/Producer at Visit Britain/Yahoo!
December 1, 2014 - December 1, 2014
Delivered advertising formats in 7 languages across 13 countries for the BRITAIN is GREAT campaign.
Freelance Designer/Developer at Channel 4
January 1, 2014 - January 1, 2014
Produced broadcast supporting websites for the Summer Paralympics 2012 and the Winter Paralympics 2014.
Freelance Designer at The Independent
February 1, 2013 - February 1, 2013
Designed a component system for the new platform to streamline multiple layouts in the design process.
Freelance Developer/Designer at Yahoo! UK & EMEA
January 1, 2011 - January 1, 2011
Produced advertising format prototypes and built a web application highlighting research results.
Senior Interaction Designer at Yahoo!
September 1, 2009 - September 1, 2009
Web designer for interactive advertising content; promoted to editorial/advertorial design for international campaigns.
Digital Designer at New Media Maze
December 1, 2006 - December 1, 2006
Web designer and ActionScript developer; produced advertising kits for European markets and interactive websites/apps.

Education

Add your educational history here.

Qualifications

Add your qualifications or awards here.

Industry Experience

Education, Financial Services, Media & Entertainment, Retail, Software & Internet, Professional Services, Computers & Electronics