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

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Featured Cases

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

Combatant project preview

Combatant — tactical e-commerce

Redesign of product pages and checkout that lifted conversion rate and improved navigation across the catalog.

E-commerceUX2025
Defence Ukraine project preview

Defence Ukraine — design system

Built a design system from scratch that accelerated delivery and unified UI across teams and platforms.

Design SystemDefence2024
Specprom project preview

Specprom — growth & UX

UX-strategy and key user flow redesigns that increased LTV by 29% and improved onboarding completion.

GrowthUX Strategy2024
LumiNap app preview

LumiNap — Storyteller Puzzles

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

WellnessMobile AppUX/UI
Cleaner app preview

Cleaner — iOS Utility App

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

UtilityMobile AppUX/UI
Night Clock app preview

Night Clock & Relax Sounds

Designed a Night Clock & Relax Sounds app focused on sleep, relaxation, and wellbeing UX.

WellnessAndroidUX/UI
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Experience

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

Blog

Thoughts on product design, design systems and shipping faster.

GrowthUX

How I lifted LTV by 29% with a checkout redesign

A walkthrough of the research, hypotheses and design decisions behind a checkout redesign that moved real business metrics.

Read more →◎ 142
Design SystemProcess

Building a design system in 30 days

A pragmatic approach to launching a design system without slowing the team down — what to build first, what to skip.

Read more →◎ 87

Got a project in mind?

I'm open to product design roles and selected freelance projects. The fastest way to reach me is email or LinkedIn.

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