Startup MVP
The first version of your product, ready for real users and investors.
- Web
- iOS
- Android
One project slot open Reserve it →
Your idea. Built into a working MVP.
I'm Oleksii, a senior software engineer. I take one project at a time and build it myself: web, mobile or desktop. Weekly demos, fixed price, and you own all the code.
A third option between an agency and a gamble
Agencies
- Weeks of sales calls before any code is written
- Your project is handed between managers, designers and developers
- You pay for overhead you never see
Freelance marketplaces
- Hard to judge quality until it is too late
- Several clients at once, so your project waits
- Deadlines slip and replies slow down
Working with me
- One senior engineer, from the first call to launch
- One project at a time, so your idea gets my full attention
- Fixed scope, fixed price, weekly demos
What I build
Business app
Internal tools, automations and client portals that replace spreadsheets and manual work.
- Web
- iOS
- Android
Desktop app
Apps for Windows and macOS that connect to local hardware or need the full power of a computer.
- Windows
- macOS
What you get
Build your MVP
How it goes
- Discovery dayIn one day I turn your idea into a clear scope, a list of screens and a plan. Anything beyond the agreed scope goes into the change list.
- BuildWeekly demos, access to the repository from day one and a shared task board.
- LaunchI deploy to production, and you get 30 days of free bug fixes. Mobile apps also need App Store and Google Play approval, which can add a few days to a few weeks to the first release.
Included
- Sign-up and login
- Core screens of your product
- Admin panel
- Deploy to production
- A clean, simple interface built on a proven UI kit
- Web, mobile (iOS and Android from one codebase) or desktop (Windows and macOS)
Not included
- Custom visual design (available after launch for an extra fee)
- Features outside the agreed scope
- Maintenance after the 30 days of free bug fixes
- Hosting, app store and third-party service fees (paid by you, in your own accounts)
After launch: support, custom design and new features, priced separately.
New ideas mid-project go into a change list. Each one is priced and scheduled before I build it.
Selected work
Spaceera
A marketplace for renting beauty, medical and therapy spaces by the hour or day, with apps for iOS and Android. My own product, built solo from scratch.
Built solo, end to end
- Web
- iOS
- Android
- Angular
- Python
- Django
How I work
Call
A free 30-minute call about your idea, your users and your budget. Then you get a fixed price, a timeline and a written contract.
Discovery day
In one day I turn the idea into a clear scope, a list of screens and a plan. Anything beyond the agreed scope goes into the change list.
Weekly demos
Every week you see working software and give feedback.
Launch
I deploy the product and make sure real users can sign up.
Handover
You get the accounts, the docs and a walkthrough of the code. Support is available if you want it.
You always know where your project stands
Weekly demo
A call or a short video every week that shows what I built.
Repository access from day one
The code lives in a repository you own and can open at any time.
Shared task board
Every task, its status and what comes next, visible to you.
About me
I'm Oleksii, a senior full-stack engineer based in Warsaw, Poland. For more than 10 years I've built complex web and desktop applications from scratch: Angular, TypeScript and React on the front end, Python, Django and Node.js on the back end.
I've led a UI team, moved large legacy apps from AngularJS and JSP to modern Angular, and built real-time features over WebSockets, micro-frontends and shared component libraries for enterprise clients.
On my own, I built Spaceera, a marketplace for renting beauty, medical and therapy spaces by the hour or day, with apps for iOS and Android. The MVP took one month, and it has been live since August 2026.
- Experience
- 10+ years
- Based in
- Warsaw, Poland (CET)
- Languages
- English, Ukrainian, basic Polish
- Contracts
- Written contract, NDA on request
- Angular
- TypeScript
- React
- RxJS
- Python
- Django
- Node.js
- Electron
- WebSockets
- Nx
- Playwright
- Docker
Questions
How much does an MVP cost?
Every project is priced individually, because every idea is different. After a free 30-minute call you get a fixed price and timeline for the agreed scope, with no surprises later. Discovery day is included.
Who owns the code?
You do. The code lives in a repository you own from day one.
What about timezones?
I work from Warsaw (CET/CEST). My working day overlaps with Europe, most of the Middle East and the morning on the US East Coast. Weekly demos happen at a time that suits you.
How do payments work?
The fixed price is paid in three milestones: 40% to start, 30% after the mid-project demo and 30% at launch.
Do you support the product after launch?
Yes. Every launch includes 30 days of free bug fixes. After that you can book monthly support with a fixed number of hours and priority fixes, or hand the code to any developer, since it is yours.
Will you sign an NDA?
Yes. I'm happy to sign your NDA before you share the details of your idea.
Do you do the design?
Not for the MVP. You get a clean, simple interface built on a proven UI kit, so your budget goes into features that test the idea. After launch I can add custom design for an extra fee, or you can work with a designer of your choice and I'll build their designs.
How do you choose the tech stack?
I pick proven tools that fit your product and that any good developer can pick up later, so you are never locked in to me.
What if you get sick?
You hear about it the same day, and the timeline moves by the days I miss. Your code, tasks and notes are always in your repository and task board, so nothing is lost.
Why only one project at a time?
Because your idea deserves full attention. One project means no context switching, steady progress and a real answer whenever you ask how things are going.
What if I want changes mid-project?
New ideas go into a change list. Each one is priced and scheduled before I build it, so the agreed price and timeline stay fixed unless you decide otherwise.
Let's talk about your idea
Book a free 30-minute call, send a short message or write on WhatsApp or Telegram. I read every message myself.
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