Overview
Responsibilities & Key Technical Solutions
Architecture & Scalability
- Refactored a legacy NestJS monolithic application into a high-performance Nx Monorepo.
- Enabled clear separation of concerns while sharing strictly typed domain logic across services.
- Integrated an independent Discord bot microservice while preserving shared interfaces and validation rules.
Advanced Payment Infrastructure
- Architected a full billing system using Stripe Connect.
- Implemented automated partner onboarding flows.
- Designed and calculated complex revenue-sharing (revshare) models.
- Set up scheduled daily payouts with robust error handling and auditability.
Real-Time Chat & Gamification
- Designed and implemented a low-latency messaging system using WebSockets (Socket.IO).
- Supported real-time user interactions inside a gamified social environment.
- Ensured scalability and stability under concurrent usage.
Custom Discord Integration
- Built a custom Discord bot using discord.js as a standalone microservice.
- Automated community interactions.
- Synchronized data between the web platform and Discord in real time.
Advertising System
- Integrated and deployed a custom ad system to support platform monetization.
- Ensured seamless integration with the existing user experience and analytics.
Code Quality & Maintainability
- Enforced Clean Code principles and strict TypeScript typing across both Next.js and NestJS.
- Focused on predictable data flows, clear domain boundaries, and minimal technical debt.
- Delivered production-ready code with long-term maintainability in mind.
Technology Stack
Frontend
- Next.js (React)
- Redux Toolkit
- Apollo / GraphQL
- Tailwind CSS
- Framer Motion
Backend
- NestJS
- Node.js
- Socket.IO
- Stripe API
- Discord.js
- AWS S3
Database & Authentication
- Supabase (PostgreSQL)
- Prisma ORM
- JWT authentication
Architecture & Tooling
- Nx Monorepo
- Microservices architecture
Results & Client Feedback
- All core features were successfully delivered and deployed to production.
- Platform scalability, stability, and user engagement were significantly improved.
- The solution provided a strong technical foundation for future growth.
“Yevhenii implemented advanced chat, payment system and ad system with great success for my website.
He is talented in Node.js, Next, communication, and database design.”
Outcome
The system is production-ready, extensible, and built to support rapid feature development without sacrificing code quality.
