0→1 Product Design
Turning early ideas, messy requirements and technical constraints into clear product direction, flows and polished experiences.
Hi, I’m Dennie — I turn complex problems into simple, intelligent products.
Product designer working at the intersection of product, AI and technology. I help teams turn complex ideas into products people can understand, use and love — from early concept to shipped experience.
- 14+ years
- DraftKings
- AI products
- 0→1
- Design systems
Expertise
What I bring to a product.
I work across the full product lifecycle — from figuring out what should be built to designing, prototyping and shipping the final experience.
AI & Intelligent Products
Designing experiences around AI, automation and probabilistic systems — where trust, feedback and human control matter as much as the interface.
Complex Product UX
Simplifying workflows, information-heavy interfaces and multi-step systems without stripping away the power experienced users need.
Design Systems & Scale
Building reusable systems that help products stay consistent, teams move faster and design survive beyond the first release.
Selected products
I don’t just design products. I build and ship them.
Numi, Tysha and Karta are my own — three products taken from idea to launch, where I owned the concept, the experience, the design system and the shipped build. Each one has a case study.
14+
Years building digital products
0→1
From idea to shipped product
AI-native
Designing intelligent experiences
3
Own products built and shipped
Numi
Food clarity, redesigned.
AI nutrition app · iOS
In beta · TestFlight
An AI-powered nutrition tracker for iPhone that kills manual food logging. Snap a photo and it instantly analyzes the meal — calories, macros and micronutrients — while building a personal “Metabolic Fingerprint” for context-aware guidance. I designed and built it end-to-end: positioning, the photo-logging flow, fasting and weight tracking, the insights engine and the design system.
Tysha
White noise for the 3 a.m. shift.
Baby-sleep app · iOS
Live on the App Store
A white-noise app for new parents and 3 a.m. wake-ups. It generates real-time white, pink and brown noise you can mix and save — no loops, no accounts, no ads. I designed and built it end-to-end around one-handed, instant playback: a layered mixer, saveable “Rooms”, a fading sleep timer, Siri control and a Lock Screen timer, all fully offline.
Karta
Scan, eat, pay, go.
QR ordering & payments · Web platform
Live · new in 2026
One QR code for a whole restaurant. Guests scan the sticker on their table to browse, order, split and pay in their own language — no app to install. Behind it sits a full back office: real-time floor plan, menu editor, analytics, auto-routed payment splits and an AI “help me choose” waiter. I designed and built the whole system — guest web app, owner dashboard and the design system tying them together.
6 screens
How I think
Problems I like solving.
The questions I keep coming back to — the ones that decide whether a product works, long before the UI gets polished.
- 01How should this product actually work?
- 02How do we make something complex feel obvious?
- 03Where should AI help — and where shouldn’t it?
- 04How do we turn this prototype into a scalable product?
- 05Why are users struggling with this flow?
- 06How do we move from idea → something we can actually test?
Working together
Ways I can help.
Sometimes that means joining a product team. Sometimes it means helping a founder get from an idea to something real.
Product direction & discovery
Clarify the problem, challenge assumptions and turn early thinking into a product direction.
UX & product audits
Find friction, structural problems and missed opportunities in an existing product — and define what should change.
Rapid product prototyping
Go from an idea to a testable, realistic product experience quickly enough to learn before investing heavily in development.
AI product design
Shape AI-powered features around real user needs instead of adding AI for the sake of AI.
Design systems & product foundations
Create or improve the patterns, components and principles that make a growing product easier to build.
0→1 product design
Work end-to-end from concept and flows through interaction design, UI and a product ready to ship.
Have a product problem worth solving? Let’s talk
Track record
Where I’ve owned the design before.
Earlier products where I owned the design — research and flows through design systems and shipped, polished UI. Today I design large-scale consumer experiences at DraftKings.
Linc
Founding Product Designer
A studio platform-as-a-service for content creators. I joined from day one — building the scalable design system and end-to-end UX, defining personas and flows, and iterating from user feedback alongside engineering.
MyGoTrainer
Lead Product Designer · UX/UI
An iOS marketplace connecting clients, trainers and facilities. I owned the entire UI and UX across all three roles — personas, usage scenarios, wireframes, screen flows and final mockups.
Shipshape
Lead Product Designer
Smart-home monitoring that catches household problems before they get expensive. I led a team of three and owned design end to end — UI/UX, the design system, the brand and its mascot. I did the research firsthand — running user interviews and climbing into the crawlspaces where the sensors get installed — then shipped the mobile app alongside engineering and stakeholders.
View on the App Store
Chatbox
Product Designer
Where my product-design career began. I designed and built the front-end UI for a channel-based team-messaging product — years before that pattern became the category Slack would define. Working shoulder-to-shoulder with engineers, sales and leadership, I shipped core features fast — work that helped secure investment and land the first major customers.
E-commerce
Senior Product Designer · Design Ops
Helped scale a small agency into a full e-commerce brand, designing experiences for major retail clients. I established the design practices and delivery flows, and mentored the junior designers on the team.
Kind words
What people I’ve worked with say.
From LinkedIn recommendations by founders and leaders I’ve built products with.
Denys is an exceptional UI/UX designer and Product Owner with a great sense of feature design… He draws a clear distinction between something looking great vs. something being a great user experience. I have no reservations about recommending Denys as a part of any team that wants to take its UI/UX talent to the next level.
Kira Rudik
Member of Parliament, Ukraine · managed Dennie directly
Denys is a very strong UI/UX designer with transferrable skills in HTML, CSS and light JavaScript. He’s very easy to work with, has a great attitude, has strong intuition about feature design, and is a pleasure to be around. He’s hard working, strongly self-motivated, and quick to learn.
Phil Gordon
CEO & Founder, Prompt.io · managed Dennie directly
Dennie is a hard-working, grind-it-out, get-the-job-done UI/UX designer… He uses his strong communication skills and obsessive focus on product to rapidly develop high-quality products. I truly enjoyed working with Dennie and would gladly endorse him as a UI/UX designer.
Dane McLeod
Product builder · 3× founder, FinTech & SaaS · managed Dennie directly
Denys is a detail-oriented and forward-thinking designer. He deeply cares about his work, always asks the right questions and is a great team player. He always met deadlines, was well organized and was an integral part of the success of all the projects he worked on.
Adam Brazg
CEO, Bilberrry · managed Dennie directly
Dennie managed a team that developed exceptional work product with remarkably little direction or oversight. He took responsibility for understanding the product vision… Dennie quickly learned whatever was required to accomplish the job and maintained flexibility to change plans when needed.
Alexander Linn
Founder & CEO, Shipshape AI · managed Dennie directly
He is a very meticulous, well-organized, and disciplined Program Manager. Dennie made it easy to coordinate the efforts of a large R&D team… He managed deliverables and worked at all hours to make sure that projects move forward and milestones were met. Highly recommended.
Chris Kyriakakis
Professor & Chief Audio Scientist · worked with Dennie for a year
Writing
Notes on design, AI & shipping solo.
Practical writing from actually building products — design careers, AI product patterns, and what happens when a designer ships apps alone.
Careers in design · 9 min read
How to become a product designer in 2026 — advice from 14 years in
The actual path into product design: the skills that matter now, a portfolio with zero experience, and an honest take on the AI question.
Read the guide → Building in public · 8 min readI shipped two iOS apps solo — what AI changed about being a designer
Numi and Tysha went from idea to the App Store with a team of one. What AI tools actually changed — and what they didn’t touch at all.
Read the story → AI & design · 7 min readDesigning AI products: 6 lessons from building an AI nutrition app
AI products are probabilistic — sometimes wrong, always uncertain, never instant. Six reusable UX lessons from a shipped product.
Read the lessons →
About
Where design, AI & technology meet.
I’m a product designer with 14+ years designing and shipping digital products across web, mobile and emerging tech. My work sits at the intersection of product strategy, user experience and technology — turning complex problems into simple, intuitive experiences while balancing user needs, business goals and technical constraints.
At DraftKings, I design large-scale consumer experiences in a highly regulated, fast-moving environment — where usability, performance and consistency directly shape engagement and business outcomes.
Beyond the day-to-day, I actively build and experiment with AI-powered products — exploring how modern language models, intelligent systems and rapid-prototyping workflows can accelerate development and unlock entirely new experiences. My own products — Numi (AI nutrition), Tysha (baby-sleep sounds) and Karta (QR ordering & payments for restaurants) — came out of exactly that: concept to prototype to shipped. I’m drawn to work where product design, AI and innovation come together to solve meaningful problems — and make products that feel both useful and delightful.
Experience
- Product DesignerDraftKingsNow
- Founder & Product DesignerNumi · Tysha · KartaNow
- Founding Product DesignerLinc — cloud studio platformPrev
- Lead Product DesignerShipshape · MyGoTrainerPrev
- Product DesignerChatbox & e-commerceStart
Focus areas
- AI-powered products
- Intelligent UX
- Product strategy
- Product discovery
- Mobile & web
- Design systems
- Rapid prototyping
- Human–AI interaction
Languages
- Ukrainian — native
- English — professional
- Russian — professional
Get in touch
Let’s build something people love.
I’m open to senior product design roles and select collaborations — based in Kyiv, working remotely with teams in the US and Europe. The fastest way to reach me is LinkedIn or email.