Yevhenii Lukashov

Full Stack Developer

GitHub

I design and build scalable SaaS platforms and secure financial systems with a strong focus on backend architecture, real-time communication, and payments.

My work centers around NestJS, Next.js, PostgreSQL, TypeORM, Stripe, and Socket.IO, where performance, reliability, and long-term maintainability are critical to product success.

Work Experience

Neteject ABMay 2025 – Feb 2026

Full Stack Developer

Built a low-latency real-time chat system with Socket.IO, ensuring reliable delivery and scalable user interactions in a gamified environment.
Architected and implemented Stripe Connect billing: partner onboarding, revshare calculations, subscriptions, and scheduled daily payouts with robust error handling.
Developed a dedicated Discord bot microservice with discord.js to automate community workflows and synchronize platform data with Discord.
Refactored a legacy NestJS monolith into an Nx monorepo to improve scalability, code sharing, and strictly typed contracts across services.
Integrated a custom ad system to support monetization, focusing on seamless UX and maintainable integration points.
Enforced Clean Code and strict TypeScript typing across Next.js + NestJS to keep long-term maintainability high and technical debt low.

CarStitch2024 - Present

Full Stack Developer

Designed and implemented a custom full-stack e-commerce platform with a dedicated CMS for managing products, content, and orders.
Built both the frontend, backend, and CMS from scratch using Node.js, Express, and React, focusing on clean architecture and long-term scalability.
Developed a shared design system to ensure visual consistency across the storefront and admin panel.
Project is currently in MVP / active development stage, evolving based on real business needs.

Technical skills

FrontendBuild responsive UIs and interactive dashboards with strong UX and clean component architecture.
Next.js · React · TypeScript · Tailwind · TanStack Query

Backend & APIsDesign scalable services and APIs with clear boundaries, strong typing, and predictable error handling.
NestJS · Node.js · Socket.IO · TypeORM

PaymentsImplement payment flows, subscriptions, and marketplace billing with reliable webhooks and retries.
Stripe · Stripe Connect · Webhooks

Database & AuthBuild data models and secure auth flows with migrations, RBAC-ready patterns, and performance-first queries.
PostgreSQL · MongoDB · JWT · RBAC

Architecture & QualityKeep projects maintainable: strict typing, modular structure, and automated checks.
Monorepo · Docker · Prettier · ESLint · SonarQube · Husky

IntegrationsBuild product integrations and automation services.
discord.js · AWS S3 · Vercel · Render