Hello universe

I'm Maciej O.

Front-End Developer with React
JavaScript & PHP Programmer


About Me

Some personal stuff

MaO Avatar

Profession & Interests

I have always been passionate about IT technologies, e.g. blockchain or artificial intelligence. Currently, I am involved in programming websites and applications as Front-End Web Developer. I have 10 years of experience in web development, contributing to more than 40 business projects. I am trying to keep up with the evolution of the industry, systematically improving my skills and implementing all modern solutions on the market, such as the JavaScript frameworks: React, Angular, Vue, Ember.

I am kind of ambitious type with positive attitude to life and a lot of energy and willingness to act or to inspire others. If I'm not coding or reading interesting book or article at the moment, surely you can find me running, biking or roller-skating somewhere around. I regularly start in various competitions. I'm a bit charitable. I love travelling, alpine trekking, drinking yerba mate and I have a cat.

Dev Skills

  • 90%
    HTML5, CSS3
  • 85%
    SaSS, Bootstrap, Bulma
  • 75%
    JavaScript (ES6+), Typescript, JQuery
  • 80%
    React, Redux, Next
  • 60%
    Jest, RTL, Enzyme
  • 80%
    PHP, mySQL
  • 75%
    Wordpress, Drupal, PrestaShop, Shoper

Work Experience

My career details


Years of business experience


Projects finished succesfully

December 2022 - [now]

React Developer, Redux, Typescript (ES6+), Next


December 2019 - November 2022

Front-End Developer; React & Redux

IamIP Sverige AB

July 2017 - November 2019

Front-End Developer


January 2009 - June 2017

Web Designer, Web Developer


April 2008 - December 2008

Junior Web Designer & Developer

Szerf Szczecin
Work & projects examples overview:
  • design, programming, maintaining, administration of websites and internet applications
  • integration websites with cms, crm systems, payment gates, webservices, creating widgets in javascript, making animated banners, positioning websites (SEO)
  • website design in accordance with W3C standards, WCAG, WAI-ARIA, RWD (responsive web design) and mobile first principles
  • projects for large companies, e.g. Izba Gospodarcza Ciepłownictwo Polskie, Euroafrica Shipping Lines, Socatots Polska, ICFDS Global Limited, Berlin Döner Kebap
  • design and implementation of web store based on the PrestaShop engine, extending functionalities e.g. managing options and live updates of products prices with online rates (xau,xag) from outsourcing stock
  • webproject template based on wordpress for football academy purposes like online booking system, connected with data source from third-party crm
  • preparing ExtendScript solutions for automatic importing translations from remote files to adobe indesign documents
  • making gamification SPA module extension (angularJS) for users embedded in crm system
  • maintaining, fixing, improving IamIP’s Intellectual Property platform to provide a secure, web-based portal for centrally managing all published patents worldwide – from the published individual patents to setting up search alerts, sharing, commenting, monitoring, collaborating and more


Check out my works

Numismatic Store


Fast food restaurant chain

Berlin Döner Kebap

Football Academy for kids


Football Confederation


Gamification user zone

Ciepło Systemowe

Supplier of heating system


Law Office

Wybranowski & Nowicki

Vehicle registration services

Multi Assist


Park Hotel

Car Service


Fuel Station


Family Business

Hass Holding

Shop’n’go Border Shop


Authorized Service Provider


Healthy food blog

Ale Zdrowe

Manufacturer of water parks



Get in touch

Feel free to contact me by email or any of the resources listed below: