I'm Vladyslav Kovalchuk, a Product Designer with 5 years of experience. I love optimizing, structuring and improving digital products.

Featured Cases

A selection of recent work in e-commerce, defence-tech and growth.

End-to-end UX/UI: 15+ user flows, custom design system & micro-interactions. Optimized UX & retention.

Designed a Sleep Sounds & ASMR app focused on relaxation, sleep onboarding, and wellbeing UX.

Designed a B2C iOS cleaner app focused on onboarding, paywall UX, and retention.

Free 30-minute session

Looking for a designer who thinks in business metrics and ships fast? Let's talk about your product and what we can improve together.

A short timeline of where I've been building products.

2020 — Present

Product Designer

Self-employed

Strategy & Analytics: led the end-to-end redesign of the Defence Ukraine platform, from initial discovery to post-launch analysis using Microsoft Clarity. Data-driven decisions optimized key UX patterns and boosted the efficiency of conversion-critical components.
Systems & Productivity: built a scalable design system from scratch, reducing design-to-development handoff time by 40% and ensuring UI consistency across 50+ components.
Prototyping & Quality: implemented interactive Figma prototypes to validate user flows before development, reducing rework risks by 30%.
Cross-functional Collaboration: partnered with SEO and marketing teams through an iterative design process, ensuring 100% alignment with business goals and accelerating feedback cycles by 25%.

Freelance & Design Partner

2023 — 2026

Product Designer

LumiNap, Cleaner App, Night Clock, Relax Sounds

Designed and launched 5 MVP mobile applications across Wellness, EdTech and Utility domains.
Led full-cycle product design: discovery, research, ideation, UX flows, UI design, prototyping and handoff.
Improved onboarding and monetization by designing high-converting onboarding & paywall flows.
Conducted competitor analysis and product research, shaping product positioning and feature strategy.
Collaborated with stakeholders and developers to deliver user-centered and business-driven solutions.

Mobile Apps

2024 — 2026

Product Designer

Defence Ukraine, Specprom, Combatant

Increased LTV by 29% through redesign of core user flows and improved UX strategy.
Improved conversion rate (CR) by optimizing checkout flow, UI clarity and decision-making patterns.
Designed and implemented a scalable design system, improving development speed and UI consistency.
Enhanced accessibility and usability for diverse audiences, including low-connectivity environments.
Optimized product performance and UX with a focus on a fast and frictionless purchasing experience.

E-commerce & Growth

2021 — 2025

UI/UX Designer

Osvita.ua ecosystem · 2M+ monthly users

Designed and scaled a design system across 6+ platforms, reducing development time by 2×.
Improved UX for complex data-heavy products (ZNO, Vstup) through data visualization and structured information architecture.
Optimized high-load user flows during peak periods (exam results, admissions), reducing time to key actions.
Enhanced accessibility (WCAG) and cross-platform usability for millions of users.
Conducted user research and behavior analysis, reducing cognitive load and improving navigation clarity.

High-Load EdTech