Aliaksei
Konyshau

Dec 2025 – Present

Ibanista (UK)

Full-Stack Developer · Freelance

Property-sourcing platform for an expat relocation service — several thousand listings/day from Leboncoin, SeLoger, Bien’ici and PAP.

Role: Client project — ran the full delivery cycle with the client’s PM: scoping, estimation, scope changes and delivery.

• Designed and built the backend on NestJS + PostgreSQL that ingests several thousand listings per day from Leboncoin, SeLoger, Bien’ici and PAP via Apify scrapers orchestrated through Redis/BullMQ job queues, with deduplication, triage/ranking and export of top picks.
• Replaced several days of manual research for the client’s 5-person sourcing team with an automated run that takes about 10 minutes, deduplication included.
• Built the React frontend used by the sourcing team; containerised the system with Docker and deployed it via CI/CD.

Dec 2025 – May 2026

AI Video Startup (NDA)

Full-Stack Developer · Freelance

AI video-generation startup — Next.js product, 500+ generations/hour.

Role: Owned the caching layer end to end and shipped features autonomously in a live Next.js + TypeScript codebase.

• Owned the caching layer end to end — CDN, service worker and video/image caching — improving media loading performance by about 70% and cutting repeat fetches of heavy files.
• Integrated third-party AI APIs and async video-processing workflows with job queuing and retry handling in a Next.js + TypeScript codebase.

Sep 2024 – Oct 2025

Big Studio

Full-Stack Developer · Remote

Internal delivery-ops platform 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 managers of about 300 restaurants to run the full order lifecycle.
• Implemented real-time courier tracking in a microfrontend architecture: geolocation streamed over WebSockets with polling for order state, reconciling concurrent updates so operators never saw stale data at peak load.
• Integrated order-sync and dispatching APIs with the backend teams, working with event-driven services on Kafka and RabbitMQ backed by Redis and MongoDB.
• Tracked application metrics in Datadog for an internal Big Studio project.

Aug 2023 – Sep 2024

CoinWay

Full-Stack Developer · Remote

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

Role: Sole frontend owner — took the merchant product from idea to production in about a year.

• Built the merchant product in ~6 months of active development (React, TypeScript, React Query): invoicing, multi-wallet accounting, analytics dashboards and admin modules. Grew from a couple of pilot merchants to 30 merchants within the first month after launch.
• Developed the Node.js API layer for payment endpoints, with error handling and retries for unreliable payment-provider responses; maintained and improved several Python services.
• Implemented live payment-status updates over WebSockets — keeping wallet balances and invoice state consistent despite out-of-order confirmations across 20+ chains.
• Redesigned the multi-step payment flow so users always saw what was happening with their funds, which almost eliminated payment-related support questions apart from genuine errors. Covered key flows with Vitest and React Testing Library.

Jul 2022 – Aug 2023

Freelance (Web Development)

Frontend / Web Developer · Client work

Landing pages and small-business websites for direct clients.

Role: Sole developer, handling requirements, delivery and revisions directly with clients.

• Built responsive, pixel-accurate sites from client designs (JavaScript, PHP, HTML/CSS), including basic backend and CMS features.