01 / Mobile appCholify
A nutrition app that makes tracking macro and micronutrients feel approachable. As a core developer, I helped build the mobile experience that supports healthier everyday choices.
Visit Cholify01 Frontend & mobile developer · Ostrava
I’m Dan, a frontend and mobile developer. I like making complicated things easier to use, and sweating the details along the way.

02 Selected work
A few things I’ve helped build with the team.
01 / Mobile appA nutrition app that makes tracking macro and micronutrients feel approachable. As a core developer, I helped build the mobile experience that supports healthier everyday choices.
Visit Cholify03 The path so far
A quick look at the jobs and studies that shaped my career.
2023 — now
Gen Digital
Working as a contract frontend developer with JavaScript/TypeScript, HTML, and CSS.
2020 — 2023
3Pillar Global
Built and maintained web applications for healthcare professionals and scientific researchers using React, JavaScript, TypeScript, and Ruby on Rails.
2020 — 2022
VSB — Technical University of Ostrava
Studied data analysis and computational methods, including Python, neural networks, C#, C++, and R.
2019
Tampere University, Finland
Spent an exchange semester studying information technology, data analysis, Python, and MATLAB.
2017 — 2020
VSB — Technical University of Ostrava
Studied programming, algorithms, and the fundamentals of computer science.
04 Kind words
A few notes from people I’ve worked with.
Working with Dan on our projects was a great experience. As a frontend developer, he did an excellent job – tasks were always delivered on time, and the quality was consistently high. In addition to that, I want to highlight his excellent communication. Dan kept us all regularly informed about what he was working on, and whenever something needed to be discussed, he was always willing to find the time. And when it comes to willingness to help – Dan never hesitated to lend a helping hand, no matter what it was. Overall, working with Dan was a pleasure, and I would definitely recommend him to any team looking for a reliable and skilled frontend developer.
I’ve had the pleasure of working closely with Dan in my role as QA, and he has always been a reliable and skilled teammate. Dan consistently writes clean, efficient code, and he is quick to address any issues that come up. We’ve collaborated closely, and I’ve always appreciated how proactive he is in helping to resolve potential bugs and improve features even before they hit QA. He has a great eye for detail and always strives to make the codebase better. Beyond technical skills, he is easy to work with and always fosters a positive and collaborative environment. It is a pleasure working alongside him.
I had the pleasure of working with Dan for over two years at Gen Digital. He consistently demonstrated strong technical skills, ownership, and a proactive mindset. Dan was the driving force behind a key feature in our template editor — enabling free movement of elements within editable messages. He led the initiative from idea to implementation, delivering a scalable and well-architected solution. He’s not only a talented engineer but also a great team player — supportive, thoughtful in code reviews, and always open to feedback. Any team would be lucky to have him!