Oleg Bazhyn
Kyiv, UkraineLocal time
About me
For more than ten years I have designed mobile apps, SaaS products and admin tools. I also code with AI, so I can take a product from the first flow to a working release and keep it running after launch.

Design
Build and run
Pick a skill to see what it means in my work.
Cases
Case index- About
Time, cost and billing in one workspace
- Problem
The product idea existed. The experience didn't
- Solution
Turning the brief into a delivered design
- Delivered
A complete experience from tracking to reporting
Productively is a web app for logging time against projects and clients, seeing what that work costs, and turning the same hours into reports and invoices.
The client brought the concept and the capabilities it wanted. There was no existing product to redesign, so the whole experience, from logging an hour to billing it, was still to be designed.
I designed the product from information architecture and key flows through wireframes to the detailed screens. Time is logged three ways, each project shows its own cost, and reports and invoices come from the same logged rows.
The delivered design connects time tracking, project cost, approvals, reports and invoicing: the hours logged in one are the hours the others count. I designed it from the brief to the detailed UI.
Delivered designThis covers the delivered screens only, nothing after the design work.
- About
A crypto marketplace for buying and selling
- Problem
An eBay-like shop. A crypto checkout. No product yet
- Solution
A shop where a sale can finish, with crypto in the background
- Delivered
A marketplace you can browse, buy in, and pay from
Nerd Town is an online marketplace for collectibles that takes payment in Bitcoin Cash. People browse a catalog, buy or list an item, and move money through an in-app wallet — buying and selling in one place.
The client came with an idea for a crypto marketplace — an eBay-like shop for collectibles, with bidding, a catalog and wallets — but no designed product yet. My job was to turn that list into an interface people could use: a cart that completes a purchase, a wallet that makes the currency feel normal, and an escrow that holds the money until the seller approves.
I designed the product from the catalog and the listing to the cart to work the way online shops usually do. For the wallet, the hold and the sign-in, neither other shops nor crypto apps had an answer that fit, so each got one of its own.
The delivered design connects the catalog, the listing, the cart, the Bitcoin Cash wallet and seller approval in one experience. I owned the UX and UI across them, from the brief to the detailed screens.
Delivered designThis covers the delivered design for desktop and phone: marketplace, listing, cart, wallet, escrow, seller and account screens.
- About
Fantasy sports where the roster is cryptocurrency
- Problem
Fantasy sports plus crypto: an idea without a product yet
- Solution
Making rules, team creation and the wallet feel like one product
- Delivered
A league you can join, a team you can set, a wallet that pays out
Wage Fantasy Crypto is a gaming hub where people join or create fantasy leagues, build a team by putting coins in nine weighted positions, follow the weekly results and get paid into an in-app wallet.
The client wanted fantasy sports and cryptocurrency in one product, where good strategy could win real money. What did not exist yet was the experience: how to join a league, read its rules and build a team. My job was to design it: league terms anyone can read before joining, a team a newcomer can set up, and a wallet where the winnings arrive.
I designed the product from league discovery to team creation, weekly standings and the wallet. It had to feel like a game, not a trading screen: each position holds a coin with a public weight, the league shows its terms before anyone joins, and every join, team change and payout has a clear next step, on desktop and on the phone.
The delivered design takes a player from finding a league to setting a team, following the standings and getting paid into a cryptocurrency wallet, all in one product. I owned its UX and UI, from the brief to the detailed screens.
Delivered designOnly the hub, in desktop and phone frames: league discovery, team creation, standings, friends and the wallet. The marketing landing page is not part of this case.



































































