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Fiverr Pro
English
$
USD
I will build your custom application
Mateusz Trybula
About this gig
I build working applications not templates, not boilerplate, not AI-generated demos.
WHAT I BUILD
Web apps: React, Next.js + TypeScript backend
Mobile: React Native + Expo (iOS + Android, offline-first if needed)
Backend: Node.js, PostgreSQL, Supabase, Azure
Integrations: REST APIs, auth, payments, third-party services
Infrastructure: Docker, CI/CD, monitoring
RECENT WORK
CashPaws offline-first mobile budget app built solo from zero. React Native, Expo, Supabase, WatermelonDB, custom sync layer, multi-currency. Passed beta testing. That's the kind of work I do.
WHO I WORK WITH
- Startups building their first product
- Small businesses moving off no-code tools
- Teams that need a serious developer, not an order-taker
HOW IT WORKS
1. You describe the idea and must-haves
2. We do a short scoping call (free, 30 min)
3. I send a written scope + timeline + fixed price
4. You approve, we build, you test, I deliver
NOT INCLUDED
UI/UX design from scratch (I implement designs, not create them), infrastructure costs, third-party service subscriptions.
Message me before ordering. Every project starts with a scope call.
Get to know Mateusz Trybula
Mateusz Trybula
Full Stack Web and Mobile App Development React Node TypeScript
- FromPoland
- Member sinceJun 2021
Languages
English, Polish
Full-stack developer turning ideas into working software. I build custom web + mobile apps (React, React Native, Node, TypeScript), convert visual prototypes to production code, and automate business processes (n8n, Make). 5+ years IT experience. Stack: React, React Native, Expo, Node, TypeScript, Supabase, Azure, Docker. Shipped SaaS backends, offline-first mobile apps, integrations, process automations. Work with startups and established companies. Same rigor either way. Let's build something real.
My Portfolio
FAQ
Do I need to provide designs or wireframes?
Not necessarily. For simple apps I work from a written brief. For complex UIs, basic wireframes help. I can provide basice designs but if you need something more custom, I can recommend a designer to collaborate with.
What's the process before you start coding?
Short discovery call (30 min, free), then I send a written scope document with feature list, technical decisions, timeline, and fixed price. You approve before I start. No surprises.
Can you take over an existing codebase?
Yes. Send me the repo and I'll review it first. If it needs refactoring before I can build on top of it, I'll tell you upfront.
