Nik Lopin
Software Engineer at Stripe
Barcelona, Catalonia, Spain
Summary
🤩
Rockstar🎓
Top SchoolNik Lopin is a software engineer based in Barcelona with over a decade of hands-on experience building user-focused web applications and design systems, currently at Stripe after senior engineering roles at Factorial and FREE NOW. He combines deep TypeScript and frontend expertise with product-minded leadership—having worked as engineering manager, product owner, and tech lead—to deliver accessible, polished UIs and scalable front-end architectures. An active open-source contributor, he’s improved core behavior in projects like xstate (FSM rehydration and tests) and migrated interactive demos for the popular Doka guide, reflecting a penchant for reliable, well-tested UX features. He also mentors and creates JavaScript courses, translating complex concepts into practical learning for aspiring web engineers. Notably, his background spans both technical management in large product initiatives and low-level performance/refactor work, a blend that helps him move teams from prototypes to production-grade systems.
11 years of coding experience
10 years of employment as a software developer
специалист математика физика, специалист математика физика at Уральский Федеральный Университетуправление проект, управление проект at Стратоплан
Русский, Английский, Чешский, Spanish
Stackoverflow
682reputation
42kreached
39answers
1question
extjs
top-5%
Github Skills (29)
css-transitions10
javascript10
back-end-development10
python10
django10
testing10
css10
typescript10
front-end-development10
vue10
state-machine10
typescript-types10
html10
finite-automata10
state-management10
Programming languages (13)
Github contributions (5)
doka-guide/content
Feb 2021 - Oct 2022
Контент Доки: статьи, картинки, демки и документация для авторов
Role in this project:
Front-end Developer
Front-end DeveloperContributions:1186 reviews, 681 commits, 1334 PRs in 1 year 8 months
Contributions summary:Nik primarily contributed to the front-end of the project by migrating and implementing several CSS and JavaScript demos. They refactored existing demos, including those for `text-transform`, `text-shadow`, `text-decoration`, `text-align`, `transition`, `pseudoelements`, `quotes`, `list-style-position`, `list-style-image`, `letter-spacing`, `padding`, `object-fit`, `list-style-type`, `line-height`, and `height`. These changes involved updating HTML, CSS, and JavaScript code within the demos to align with the project's goals. The user also implemented a demo for `window.print`.
markdown
vas3k/vas3k.club
Jun 2020 - Aug 2020
No bullshit IT community with private membership
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:20 reviews, 6 commits, 58 PRs in 1 month
Contributions summary:Nik primarily focused on enhancing the platform's functionality and user experience. Their contributions included implementing features to retract upvotes for posts and comments, refining the email digest by excluding footers, and fixing a z-index-related bug in the frontend. Additionally, the user introduced a new comment template snippet to improve comment rendering on the profile and search pages and refactored code.
pythondjangono-bullshitbullshitvuejs
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