I am a seasoned Front-End Software Engineer with 8 years of hands-on experience building high-performance, scalable, and user-centric web applications. My expertise spans React, Next.js, TypeScript, Tailwind CSS, and modern web technologies, enabling me to deliver clean, maintainable, and production-ready code that aligns perfectly with business goals. Throughout my career, I have successfully led complex frontend projects, collaborated with cross-functional teams, and implemented best practices in UI/UX, performance optimization, and responsive design. Whether it's developing enterprise-level dashboards, SaaS platforms, or e-commerce solutions, I bring a results-driven mindset, rapid problem-solving skills, and a commitment to delivering top-quality code on time. I am looking for opportunities where I can leverage my deep technical expertise and leadership experience to contribute to ambitious projects and drive frontend excellence.

Daniel Lis

I am a seasoned Front-End Software Engineer with 8 years of hands-on experience building high-performance, scalable, and user-centric web applications. My expertise spans React, Next.js, TypeScript, Tailwind CSS, and modern web technologies, enabling me to deliver clean, maintainable, and production-ready code that aligns perfectly with business goals. Throughout my career, I have successfully led complex frontend projects, collaborated with cross-functional teams, and implemented best practices in UI/UX, performance optimization, and responsive design. Whether it's developing enterprise-level dashboards, SaaS platforms, or e-commerce solutions, I bring a results-driven mindset, rapid problem-solving skills, and a commitment to delivering top-quality code on time. I am looking for opportunities where I can leverage my deep technical expertise and leadership experience to contribute to ambitious projects and drive frontend excellence.

Available to hire

I am a seasoned Front-End Software Engineer with 8 years of hands-on experience building high-performance, scalable, and user-centric web applications. My expertise spans React, Next.js, TypeScript, Tailwind CSS, and modern web technologies, enabling me to deliver clean, maintainable, and production-ready code that aligns perfectly with business goals.

Throughout my career, I have successfully led complex frontend projects, collaborated with cross-functional teams, and implemented best practices in UI/UX, performance optimization, and responsive design. Whether it’s developing enterprise-level dashboards, SaaS platforms, or e-commerce solutions, I bring a results-driven mindset, rapid problem-solving skills, and a commitment to delivering top-quality code on time. I am looking for opportunities where I can leverage my deep technical expertise and leadership experience to contribute to ambitious projects and drive frontend excellence.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert

Work Experience

Web Developer at Netguru
January 1, 2017 - July 31, 2020
Led a team of 5 in developing a high-performance single-page application using Next.js and React, reducing load times by 30%. Implemented responsive and accessible design, ensuring compatibility across devices and browsers, boosting user engagement by 25%. Optimized web application performance by integrating advanced JavaScript and TypeScript techniques, enhancing speed by 20%. Developed and maintained code quality through rigorous testing and debugging, reducing bug rate by 15%. Mentored junior developers in frontend technologies, improving team performance. Pioneered the use of modern web frameworks and libraries, increasing development efficiency and reducing time to market by 18%.
Front End Developer at It Magination
August 1, 2020 - August 31, 2023
Collaborated with design teams to integrate user interfaces into scalable web applications, boosting user satisfaction scores by 20%. Engineered a complex web system to increase development efficiency and support scalable solutions.
Senior Front End Developer at Mitel Networks
September 1, 2023 - Present
Developed customer-facing single-page applications using HTML, CSS, JavaScript, and TypeScript, increasing client retention by 10%. Participated in full software development life cycle, delivering projects 20% faster than the average timeline. Enhanced system performance and scalability using advanced web development tools and frameworks. Mentored new team members on best practices in web development, improving team performance.

Education

Bachelor's in Software Engineering at Warsaw University of Technology
September 1, 2013 - December 16, 2025

Qualifications

Advanced Next.js Development
January 11, 2030 - December 16, 2025

Industry Experience

Software & Internet
    paper hacktoberfest-2025-frontend

    This is the frontend project for Open Code Chicago’s Hacktoberfest 2025 initiative.
    It’s built with React, Vite, and TailwindCSS, and designed for community collaboration.
    Contributors of all levels are welcome to help improve UI, components, and user experience.
    corex-supplements.netlify.app