Full-Stack Developer
Poznan, Polanddebug duck

Aliaksei
Konyshau

Clear products, solid systems, no hand-waving.

Frontend-focused Full-Stack Developer with 3+ years of experience, taking features from unclear requirements to production — real-time systems, operational dashboards, and payment flows.

React, TypeScript, Next.js, and Node.js, with AI-assisted workflows as a core part of how I ship. Based in Poznan, open to Poland or remote.

Open Projects Download CV
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Facts about me.

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Experience

Professional Experience

Dec 2025 – May 2026

Freelance (Upwork)

Frontend Developer · Remote

AI video-generation platform — 200+ active users/hour.

Role: Owned the caching modules and shipped features autonomously inside an existing product team’s codebase.

  • Delivered new features end-to-end in a live Next.js + TypeScript codebase with minimal onboarding, coordinating async with a remote product team.
  • Diagnosed and fixed video/image caching bugs that caused production rendering failures across async pipelines — resolved recurring render errors affecting live users.
  • Integrated third-party AI APIs and async video-processing workflows with reliable job queuing and retry handling.

Oct 2024 – Oct 2025

Big Studio

Full-Stack Developer · Remote

Internal delivery-ops SPA for AmRest on Azure — 500–600 couriers, up to 9,000 orders/day across Poland.

Role: Frontend owner of the live tracking and dispatch dashboards, integrating with backend teams.

  • Built per-restaurant order tracking and courier dashboards (React, TypeScript, Mapbox) used daily by dispatch operators to manage the full order lifecycle.
  • Implemented real-time courier tracking in a microfrontend architecture on Azure — streamed geolocation synced against live order state, handling concurrent updates without stale UI at 9k orders/day scale.
  • Integrated order-sync and dispatching APIs; reconciled concurrent updates so operators always saw a correct, current picture during peak load.

Aug 2023 – Sep 2024

CoinWay

Full-Stack Developer · Remote

B2B/B2C crypto payment platform — 20+ coins, invoicing and multi-wallet accounting.

Role: Fully owned the frontend application — built everything from scratch through to production.

  • Built the entire merchant-facing frontend from scratch to production (React, TypeScript): invoicing, multi-wallet accounting, analytics dashboards, and business/admin modules.
  • Implemented live payment-status updates over WebSockets — keeping wallet balances and invoice state consistent as confirmations arrived out of order across 20+ chains.
  • Rebuilt a high-drop-off multi-step payment flow: profiled where users abandoned, reworked the UX and validation, cutting payment failures by 50%.
  • Developed the Node.js API layer for payment endpoints with error handling and retry logic to stay reliable against flaky provider responses.

Aug 2022 – Jul 2023

Freelance (Web Development)

Frontend / Web Developer · Client work

Landing pages and small business websites for direct clients.

Role: Sole developer, handling the full client cycle from requirements to delivery.

  • Built and shipped responsive landing pages and small business sites for clients (JavaScript, PHP, HTML/CSS).
  • Translated designs into pixel-accurate, cross-browser layouts and wired up basic backend / CMS functionality in PHP.
  • Managed requirements, delivery, and revisions directly with clients end-to-end.
About

I like making complex products feel clear.

Aliaksei Konyshau

Frontend-heavy full-stack

Curious, practical, and interested in the work itself.

Frontend-focused Full-Stack Developer with 3+ years of experience, from freelance web development to product teams. I take features from unclear requirements to production — real-time systems, operational dashboards, and payment flows in React, TypeScript, Next.js, and Node.js.

I own modules end-to-end and coordinate with backend and product, and I use AI-assisted workflows (agentic coding, custom pipelines) as a core part of how I ship.

Experience

3+ years commercial

Location

Poznan, Poland

Languages

ru / pl / en

Open to

Poland / remote

Projects

Selected work

Weather Notify
Weather Notify preview

Project 01

Weather Notify

Event-driven weather alerting platform: users define multi-condition triggers per city and get notified via Telegram, Email, and Web Push the moment thresholds are met.

Highlight

NestJS microservices (core-api / watcher / notifier) over RabbitMQ with at-least-once delivery, a state-machine anti-spam layer, and timezone-aware quiet hours.

NestJSRabbitMQPostgreSQLNext.js 16TypeScript
Open Live Code on GitHub
TypeRacer Clone
TypeRacer Clone preview

Project 02

TypeRacer Clone

Real-time multiplayer typing game with live progress sync, careful throttling, and no unnecessary per-keystroke database writes.

Highlight

Realtime updates stayed responsive without turning the backend into a write-amplified mess.

Next.js 16TypeScriptSupabaseZustand
Open Live Code on GitHub
R&M Dashboard
R&M Dashboard preview

Project 03

R&M Dashboard

Character dashboard with auth, row-level security, debounced search, favorites, and URL-synced pagination.

Highlight

Playful UI on top of a serious foundation: protected data, reliable state sync, and smoother browsing.

Next.jsTypeScriptSupabasePostgreSQL
Open Live Code on GitHub
Stack

Tech stack

The full toolkit I work with across the stack — pick a domain to inspect what runs inside it.

// tap a category to switch · swipe for more

user@aliaksei:~$ stack --show frontend

frameworks/

React.jsNext.js

state/

ZustandRedux ToolkitMobX

styling/

Tailwind CSSSCSS / SASSMaterial UIChakra UIBootstrap

maps/

Mapbox

bundlers/

ViteWebpack
user@aliaksei:~$
Education

Studies & languages

Oct 2021 – Feb 2025

Adam Mickiewicz University

Poznań, Poland

Bachelor of Computer Science

Certification

freeCodeCamp

Online

Certified Full-Stack Developer

Languages

RussianNative
PolishC1
EnglishB2
Contact

Let's talk.

Open to full-time roles, freelance work, and product teams in Poland or remote.

GitHub

GitHub

al3xb0

LinkedIn

aliaksei-konyshau

Aliaksei Konyshau
PrivacyNext.js portfolio on Vercel.