Hi, I am Mariusz.

I’m a Frontend Developer based in Cork, Ireland, with a passion for building fast, user-friendly websites and web apps. I focus on creating responsive, accessible, and visually polished experiences for the web.

website designer

html css javascript full stack web developer designer
WHAT DO I DO?

I specialize in modern JavaScript development, particularly with React. I build scalable, interactive user interfaces and bring designs to life with precision and care.

create website
HOW DO I DO IT?

I collaborate closely with design and product teams to ensure every detail works beautifully—across devices, browsers, and use cases. I’m hands-on with performance, accessibility, and manual testing to deliver high-quality results.

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WHY HIRE ME?

I work quickly and effectively in getting things built and working across the stack. I'm an excellent communicator who thrives in bright and enthusiastic teams and I'm also a self starter when working solo.

Skills

As a frontend developer, I focus on creating seamless user interfaces and experiences

build website
 FRONT END

I specialize in HTML5/CSS3, JavaScript (ES6+), and React.js development. I'm also experienced with WordPress, Webflow, and various CSS frameworks to create responsive designs.

design website
 TOOLS & INTEGRATIONS

I'm proficient with Git/Github, REST APIs, Google Analytics, and implementing third-party services. I excel at translating designs into functional, interactive interfaces.

95% complete
HTML / HTML5
85% complete
CSS / CSS3
80% complete
JavaScript
85% complete
React
90% complete
Responsiveness & Performance

Projects

website developer database python sql
Innential website, Gatsby/Contenful CMS
website django mysql
Service Assistant AI website
website creation developer javasacript
Portfolio website
simple website html css
Infinity Renewables website
simple website html css
Country finder, Vue/Rest API
website creation developer javasacript
Avatar maker, Vue.js/Firebase
website creation developer javasacript
Minimal Blog, Gatsby/GraphQl
website creation developer javasacript
Memory game, JS/Jquery

Contact

Have a project in mind?

I am currently available for freelance work. I would love to hear from you!

+353 899 889 840
Cork, Ireland

Web Design Cork Ireland