/ Designer, strategist & builder /
Sergej specializes in designing and building product MVPs, scalable design systems, and production-ready websites in Webflow.
How I work
How I work
30+
Collaborations
Collaborated with global teams, from lean startups and digital agencies to large-scale organisations.
26+
Product launches
Designed and shipped platforms, design systems, and responsive websites.
7+
Years in the field
More than 7 years designing thoughtful, scalable digital experiences.
110%
Commitment
Always learning, testing, and improving because great problem solvers never stand still.
+26
Projects
Delivered websites, PWAs, and design systems with measurable improvements in usability, consistency, and conversion.
2018
Years of experience
Designing thoughtful digital products and websites since 2018 by blending UX strategy, visual design, and business insights.
100%
Growth
The outcomes of my work have helped my clients improve engagement, attract new customers, grow and establish their digital presence.
+50
Clients
Collaborated with over 50 clients and teams worldwide, from tech startups to creative agencies and corporates like Infineon.
110%
Learning
Always learning, testing, and improving because great problem solvers never stands still.
/ MOBILITY / PRODUCT DESIGN
Redefining Water Taxi Booking in Rotterdam
Water Taxi Rotterdam (WTR) is a prominent water transportation service in the city, offering an efficient means of crossing the river. However, despite its popularity, WTR faced challenges with online booking.
Interaction design
Visual design
Prototype
Mobile
/ 01
View Project
Redefining Water Taxi Booking in Rotterdam
Redefining Water Taxi Booking in Rotterdam
Redefining Water Taxi Booking in Rotterdam
Redefining Water Taxi Booking in Rotterdam
Redefining Water Taxi Booking in Rotterdam
Redefining Water Taxi Booking in Rotterdam
Redefining Water Taxi Booking in Rotterdam
Redefining Water Taxi Booking in Rotterdam
Mobile App
Bazarium - Item Trading App MVP
Introducing Straps, a groundbreaking project meticulously crafted by our agency, boasting cutting-edge branding, sleek design, and visionary art direction
Mobile
Interaction design
Prototype
Visual design
Product Strategy
/ 02
View Project
Bazarium - Item Trading App MVP
Bazarium - Item Trading App MVP
Bazarium - Item Trading App MVP
Bazarium - Item Trading App MVP
Bazarium - Item Trading App MVP
Bazarium - Item Trading App MVP
Bazarium - Item Trading App MVP
Bazarium - Item Trading App MVP
/ TECHNOLOGY / DIGITAL DESIGN SYSTEM
Building Infineon’s Digital Design System
Visual design
Prototype
Design system
Cross platform
/ 03
View Project
Building Infineon’s Digital Design System
Building Infineon’s Digital Design System
Building Infineon’s Digital Design System
Building Infineon’s Digital Design System
Building Infineon’s Digital Design System
Building Infineon’s Digital Design System
Building Infineon’s Digital Design System
Building Infineon’s Digital Design System
/ INSURANCE / PROGRESSIVE WEB APPLICATION
Smarter Insurance Flows for emilia.ch
Emilia is a browser-based insurance platform offering customers a seamless way to manage contracts, make payments, and update personal data.
Interaction design
Visual design
Prototype
Design system
Desktop web
/ 04
View Project
Smarter Insurance Flows for emilia.ch
Smarter Insurance Flows for emilia.ch
Smarter Insurance Flows for emilia.ch
Smarter Insurance Flows for emilia.ch
Smarter Insurance Flows for emilia.ch
Smarter Insurance Flows for emilia.ch
Smarter Insurance Flows for emilia.ch
Smarter Insurance Flows for emilia.ch
“Sergej brought a rare mix of strategic thinking and hands-on craft to our project, helped us understand our users, refine the value proposition, and turn our product into a digital experience that actually performs.”
/ Eldin Zaimovic - CEO of Bazarium /
They support my workflow
Expertise
/ 01
UI/UX DESIGN
Designing clean, functional interfaces that make products usable and scalable. Whether it's a fresh MVP or a feature-rich platform, every layout, flow, and interaction is built to support real users and real product goals.
/ 02
Design Systems
Creating design systems from the ground up or helping teams scale and maintain existing ones. From component libraries to documentation, everything is structured for consistency, speed, and long-term growth across teams.
/ 03
Consulting
Helping teams figure out what to build and how to build it right. From early-stage planning to design audits and product feedback, I offer clear, honest input that’s focused on improving execution, not adding noise.
/ 04
Webflow DEV
Designing and developing custom Webflow websites and PWAs that are fast, responsive, and easy to manage. No templates, just tailored solutions built to support launches, marketing, or long-term growth.
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Services
/ Get in Touch /
Always open for good projects, bold ideas, and honest conversations.
