a
al3xb0

Aliaksei K.

@al3xb0

Fullstack Developer

Polonia
Bielorusso, Inglese, Russo, Polacco
Alcune informazioni sono riportate in lingua inglese.
Chi sono
Frontend-focused Full-Stack Developer with 3+ years of commercial experience building scalable web applications, real-time systems, and maintainable frontend architecture.... Continua a leggere

Competenze

a
al3xb0
Aliaksei K.
offline • 

Consulta i miei servizi

Siti web personalizzati
I will create website or parser for you
A partire da80 USD / progettoMaggiori dettagli
Correzione di bug
I will fix bugs for you
A partire da60 USD / progettoMaggiori dettagli

Portfolio

Esperienza lavorativa

Upwork

Full-Stack Developer

Upwork • Freelance

Dec 2025 - May 2026 • 5 mos

AI video generation platform, 200+ active users/hour. • Shipped new features autonomously in an existing Next.js + TypeScript codebase within a remote product team. • Diagnosed and fixed video/image caching bugs causing production rendering failures across async pipelines. • Integrated third-party AI APIs and async video processing workflows with reliable job queuing.

AmRest

Full-Stack Developer

AmRest • Full time

Sep 2024 - Oct 2025 • 1 yr 1 mo

Internal SPA for Amrest’s delivery ops on Azure; 500–600 couriers, up to 9,000 orders/day across Poland. • Built per-restaurant order tracking and courier dashboards (React, TypeScript, Mapbox). • Implemented real-time courier location tracking in a microfrontend architecture on Azure — geolocation streams synced with live order state. • Integrated backend APIs for order sync and dispatching, handling concurrent updates without stale UI state.

CoinTrade

Full-stack Developer

CoinTrade • Full time

Aug 2023 - Aug 2024 • 1 yr

B2B/B2C crypto payment platform, 20+ coins, invoicing and multi-wallet accounting. • Built merchant invoice and multi-wallet UI (React, TypeScript); integrated real-time payment updates via WebSockets. • Redesigned high drop-off multi-step payment flow — identified friction points and rebuilt UX, directly reducing payment failures. • Developed backend API layer with error handling and retry logic for payment endpoints (Node.js).