Serhii Feshchyk

UX/UI Designer

Professional Profile Serhii Feshchyk is a UX/UI Designer focused on creating clear, functional, and user-centered digital interfaces. He has experience designing websites, responsive interfaces, and mobile applications, following established design standards such as Apple Human Interface Guidelines and Material Design. His work focuses on translating complex product ideas into intuitive user experiences while maintaining strong visual consistency and usability. Role at Phenomenon Studio At Phenomenon Studio, Serhii contributes to the design of digital products and web platforms, supporting teams in developing structured and user-friendly interfaces. He works closely with product managers, developers, and designers to transform product requirements into practical design solutions. He is also involved in building scalable design systems and applying atomic design principles to ensure consistency across digital interfaces. Core Expertise UX/UI design for web and mobile products / Responsive web design / User interface design and usability improvement / Design systems development / Atomic design methodology / Wireframing and prototyping / Interaction design and usability testing / Collaboration with product and development teams Industries & Product Types Web platforms and digital products / Mobile applications / SaaS and technology products / User-centered digital interfaces

FAQ

Questions already answered by Serhii Feshchyk

Why do feature-rich products often fail to deliver a good user experience?

From my perspective, adding more features doesn’t always make a product better. When too much functionality is introduced without clear structure, users can feel overwhelmed and struggle to understand how the product works. At Phenomenon Studio, we focus on clarity over complexity. We structure features around user needs and workflows, ensuring that even complex products feel intuitive and easy to use.

How do you design user-friendly interfaces for complex digital products?

I start by simplifying the logic behind the product. Breaking down complex processes into clear steps helps reduce cognitive load and makes interfaces easier to navigate. As a team, we design structured user flows and consistent interfaces that guide users naturally. This helps improve usability and ensures that the product feels intuitive from the first interaction.

How do responsive design and platform guidelines impact product usability?

I follow established standards like Material Design and Apple Human Interface Guidelines to ensure that interfaces behave predictably across devices and platforms. At Phenomenon Studio, we design responsive and adaptable interfaces that provide a consistent experience across screen sizes. This improves usability, accessibility, and overall product quality.

Selected insights

Serhii Feshchyk insignts

Serhii Feshchyk

Feb 18, 2026 7 min read

Why feature-rich products fail to feel powerful

Discover why feature-rich products often fail to feel powerful — and how structuring complexity with clear hierarchy, guided choices, and strong defaults helps users move faster, stay confident, and experience real momentum.

Analytics Design

Serhii Feshchyk

Aug 13, 2025 8 min read

How to maintain simplicity: Designing complex systems and dashboards

Discover UX strategies to design clear, intuitive dashboards for complex systems without losing functionality. Reduce cognitive load and boost adoption.

Design Design system UX Design Web Application