I’m Kostya

,

a design

lead

helping

products

grow,

ideas

fly,

and

teams

stay

sane.

I look at product problems as a business person and solve them as a designer. I’m based in Utrecht and have been doing this for more than 20 years.

K.kisleyko@gmail.com

2025-2026

Blue-ocean startup

Hands-on

Turning Phone-Based Sales into a Digital Customer Journey for Tending.app

I helped turn an emotionally sensitive, phone-based service into a clear digital customer journey, improving the customer experience and sales operations with AI-assisted workflows.

2023-2025

10× subscriptions

2× sales

Hands-on

Growing subscriptions 10× and sales 2× for AURA, a healthcare service

I improved the iOS and watchOS experience, website, paywall, and marketing touchpoints to increase conversion, retention, and product value.

2019–2023

+30% profitability

40+ awards

C-level

Scaled design, talent, and impact at AGIMA — the largest production agency in Eastern Europe

I led design across 100+ client projects, scaled the team to 20+ designers, cut turnover by 50%, and helped increase profitability by 30%.

I’m a hands-on product design leader with 20+ years of experience creating digital products and 12+ years building and leading teams.

I was born in Minsk, a city of engineers, where I learned early to enjoy figuring out how things work — and how they could work better. That curiosity still shapes the way I think about products, teams, and business.

Over the years, I’ve worked with startups, product companies, and clients across more than 100 projects. My work spans product strategy, research, UX, and UI, and I still enjoy being close to the craft.

I look at product challenges through a business lens and solve them as a designer. Research, Figma, AI, experimentation, and team building are all part of my toolkit — I choose what fits the problem rather than forcing a particular process.

Outside work, you’ll usually find me kayaking, gaming on my Steam Deck, or exploring a new place on foot.