Serhii Lanchukovskyi
Product UX/UI designer. Ukraine, remote.
Twelve years in design, more than nine of them in product: SaaS platforms, customer portals, admin panels with role-based permissions.
I build design systems from scratch — tokens, Figma variables, light and dark themes, component libraries that development teams keep using. And I run the whole cycle, from competitor analysis to developer handoff.
I started in 2014 with HTML and CSS. So I speak the same language as developers, and I can build the website myself instead of just handing over mockups.
Work history
Neural Nomad Ltd · Product UX/UI Designer
Two customer portals, four-plus roles each, desktop and mobile. A design system as a standalone Figma library, linked to every product file. Under NDA — described in general terms only.
Socks Expert LTD · Product UX/UI Designer
LTE Socks: full redesign of a customer portal and admin platform. Sole designer.
MusConv · Product UX/UI Designer
Core product redesign, +12% install-to-paid. One design system across desktop, mobile and web. Also ran the full cycle for PuffStats, released on the App Store.
JunFolio · UX/UI Mentor
Volunteer. 8+ mentees, more than half now employed.
Freelance · occasional projects
SaaS platforms, online stores, mobile apps for international clients.
Digisol Agency · UX/UI Designer
Web and mobile products for agency clients.
Hyuna International Ltd · UX/UI Designer, Design Lead
International media subscription platform — film, music, books, games. Part of the development team in Ukraine, 60+ people. Led design for one web product and a team of five designers. Also worked on the iOS design team.
Web designer, front-end
Hyuna International Ltd (2015 – 2017) · SEOKRUA (2014 – 2015)
Landing pages and front-end in HTML, CSS and JavaScript; responsive cross-browser layouts, collaborative work in Git.
Education
Google · UX Design certificate
UPROCK · School of interface design, UX/UI
Kharkiv National University of Radio Electronics
Master’s degree, Software Engineering
Kirovohrad Cybernetic and Technical College
Bachelor’s degree, Software Engineering
References
Viacheslav M.
Product & Project Manager, Junfolio · December 2025
Review on Upwork
I worked with Serhii on several projects, including both redesigns and designs from scratch. I’m completely satisfied with our collaboration. All tasks were completed on time and according to my requirements. If any questions came up, Serhii responded quickly and was always available. Serhii is also effective in the role of a mentor. In the Junfolio project, he has proven himself to be an excellent and inspiring coach. Under his guidance, participants progressed quite quickly in both UI and UX.
Oleg Sobko
Project Manager · August 2021
Managed Serhii directly
I had a opportunity to work with Sergey for more than a few years. During that time Sergey showed ability to create modern design solution as well as to keep deadlines tough. He has expertise in UI/UX as well is in graphic design also he is able to provide some front-end solutions. With the strong knowledge of such tools as figma, adobe Photoshop and Illustrator as well as with good soft skills he was a really valuable member of team. Looking forward for further collaboration with Sergey.
Oleh Humeniuk
CEO · February 2018
Sergey is an awesome asset if you want to create something new, modern and usable. Tasks were always in time and better than expected.
Ivan Obodyanskyy
Senior PHP Developer · March 2016
Managed Serhii directly
Sergey is very detailed-oriented person who is able to work on difficult projects. His technical background allows him to be very effective about what he develops and his estimation time to resolve task is very accurate. He is very friendly and social person, always concerned to build a good teamwork relation.
Tell me about your project.
Ukraine, remote. English in writing; Ukrainian in writing or on a call.