Hi, I'm Darek,
Self-taught developer with 3+ years of hands-on experience building full-stack applications.
Exploring and learning ways to build web 'things'
Loading github contributions...
A selection of chosen ones to explore
Explore more details / projects on github Where some of the projects I try to maintain frequently, to the others, I like to come back from time to time
since 2022
Stream Manager for Twitch
FrontendBackend
A local-use Twitch stream manager for chat commands, overlays, timers, loyalty, and more. I go back from time to time to improve things done in the past.
React (with Redux & TanStack)Express.jsMongoDBSocket.IOtwurpletmi.jsmomentwinstonmulterreact-grid-layoutTypeScriptSCSS
StreamManager is a Twitch stream manager currently in active development, for now - intended for deployment on localhost or a home LAN
2025
AchievementSystem (Full-Stack Achievement Platform)
BackendFrontend
Distributed real-time achievement and badge platform with multi-worker architecture, Redis pub/sub coordination, and Stripe payments. Integrates Kick livestream APIs for observer-based achievement tracking.
TypeScriptNode.jsExpress.jsMongoDBMongooseRedisSocket.IOReactNext.jsRedux ToolkitReact QueryTailwind CSSRadix UIStripePrometheusPM2
Production-grade system featuring environment-based worker routing (api, processor, collector-ws, collector-wh), distributed Redis caching with lock mechanisms, Socket.IO real-time events, and Next.js 19 frontend with Redux Toolkit state management.
since 2024
Surword - RPG Text-Based Game
FrontendBackend
A text-based RPG game with character progression, quests, and interactive gameplay, built with a dedicated frontend and backend.
Java SpringNext.jsReactTypeScriptREST APIMongoDB
Surword is a full-stack project featuring a Next.js frontend and a Java Spring backend. It provides an engaging RPG experience where players can progress their characters, complete quests, and manage in-game resources.
2026
Multiplayer Game
Multiplayer game built in Godot 4.6 with C# scripting. Demonstrates peer-to-peer networking, server-authoritative game logic, and complex multiplayer state synchronization.
C#Godot 4.6ENet MultiplayerGDScriptTerrain3D Addon
C# game showcasing ENet multiplayer architecture with server-client model, RPC-based event synchronization, and distributed game state management. Features player spawning, lobby coordination, inventory sync, and skill assignment across networked peers.
since 2024
Music Discord Bot (Suno-YT)
Backend
A simple, fun, lightweight Discord music bot that streams audio from both YouTube and Suno AI.
TypeScriptdiscord.jsyt-searchffmpeg-staticcheerioDocker
Discord bot integrating YouTube playback and Suno AI streaming capabilities - built for educational and fun purposes.
since 2025
Quiz Show Game (Monorepo)
BackendFrontend
A real-time, audience-powered multiplayer quiz game built as a monorepo with frontend, backend, and shared modules.
TypeScriptSCSSDockerDocker Compose
Monorepo structure containing a TypeScript-based frontend, backend, and shared utilities; supports live multiplayer interaction, voting, dynamic scoring, and customizable question sets.
since 2023
E-Shop Nest (Microservices)
BackendFrontend
An shop clone with (gRPC) built with NestJS that of custom e-commerce microservices. Done as a project to increase knowledge of microservices and scalable backend design
TypeScriptNestJSgRPC / ProtoDockerPostgreSQL
Central gateway service for an e-shop composed of microservices (Authorization, Order, Product, Category), plus shared proto definitions and a frontend - demonstrating microservice routing, security, and scalable architecture.
Other technical projects and contributions that showcase problem-solving across different domains
Where I cannot show an exact projects here, I describe my contributions instead.
BackendFrontend
Full-Stack Prototypes
Deployed various personal MERN projects with end-to-end frontend/backend integration.
MongoDBExpress.jsReactNode.jsJWTREST APIs
Backend
Event-Driven Backends
Built a Kick-stream achievement system leveraging WebSockets + JWT auth + API caching.
WebSocketsJWTRedisAPI CachingReal-time Events
Automation
Media Automation
Used FFmpeg for automated video recap generation (audio/video slicing by timestamp).
FFmpegNode.jsVideo ProcessingAudio ManipulationAutomation
Extensions
Browser Extensions & Scraping
Authored Tampermonkey scripts to enhance site UIs; used Puppeteer for custom scraping pipelines.
TampermonkeyPuppeteerJavaScriptDOM ManipulationWeb Scraping
Reverse Engineering
Stack Ports
Converted StreamManager to Kick.com-only version by reverse-engineering the web client pre-API using Puppeteer and request interception.
PuppeteerRequest InterceptionReverse EngineeringAPI Analysis
Reverse Engineering
Custom Features & UI Enhancements
Leveraged the League Client Update (LCU) API to build a custom client with added features, automated data retrieval, and experimental UI interactions. Done primarily for educational and reverse-engineering experience.
ReactExpressSocket.io + WebSocketsAutomation
Frontend
Desktop Application Development
Built Electron apps with React, local SQLite persistence, OS integration (window focus detection), and cross-platform packaging.
ElectronReactSQLiteIPCOS IntegrationDesktop Apps
Backend
Schema Design & Data Modeling
Crafted complex MongoDB/Mongoose schemas with nested relationships, composition patterns, and efficient querying for multi-tenant achievement systems.
MongoDBMongooseSchema DesignData NormalizationQuery Optimization
Backend
Real-Time State Synchronization
Implemented Socket.IO room-based routing, heartbeat monitoring, and multi-channel event broadcasting for overlay/dashboard real-time updates.
Socket.IORoom ManagementHeartbeat PatternsReal-time BroadcastingState Sync
Explore how often I use different technical skills.
This is only a partial list - there are certainly other technologies I've worked with to varying degrees.
Git
Tools
Always
I use Git every single time to keep projects organized and manageable
React
Frontend
Almost where I can
My go-to framework for building interfaces. The one I feel most at home with and the most confident using compared to others
TypeScript
FrontendBackend
Almost where I can
Strong typing and clarity that I almost can't imagine coding without
Node.js
Backend
Almost where I can
For backend work, Node.js is my main. I feel like it's the technology I've used and mastered the most
MongoDB
Backend
Almost where I can
In my opinion, MongoDB is simpler and more flexible than SQL databases, so I end up using it most of the time
Express.js
Backend
Almost where I can
Express.js is my go-to for Node.js backend projects - lightweight, flexible, and reliable for almost anything I build
JavaScript
FrontendBackend
Very often
Whether i prefer to use TypeScript these days, sometimes plain JavaScript is way to go
Next.js
Frontend
Very often
Whenever I work with React, Next.js is one of favorite. A powerful tool that makes development smoother and more enjoyable
Tailwind CSS
Frontend
Very often
After many projects of writing with plain CSS and SCSS, Tailwind feels like the fastest and most efficient way to style modern applications
Redux Toolkit
Frontend
Very often
For medium and larger projects, I rely on Redux Toolkit for predictable state management, though I'm gradually migrating to simpler solutions
Redis
Backend
Very often
I experiment with Redis for caching, queues, and pub/sub patterns when needed
Vercel
Tools
Very often
Where it comes for free frontend app hosting - deployed multiple projects on Vercel, enjoying the simplicity and speed of serverless hosting
Docker
Tools
Fairly regularly
I regularly try to use Docker in medium and larger projects to create consistent development and deployment environments
Vue.js
Frontend
From time to time
I experiment with Vue from time to time to understand its differences from React. I was pleasantly surprised at how similar yet unique it feels
Vite
Frontend
From time to time
I use Vite to speed up frontend development, enjoying its lightning-fast bundling and modern dev server
Python
Backend
From time to time
From time to time, I use Python to quickly build scripts or tools where performance isn't the top priority
PostgreSQL
Backend
From time to time
I turn to PostgreSQL when I need advanced queries, complex relationships, or reliable relational data handling
NestJS
Backend
From time to time
I use NestJS from time to time to structure scalable backend applications with TypeScript and modern patterns
WebSockets
Backend
From time to time
I use WebSockets occasionally for real-time features like live chats, notifications, or interactive apps
Nginx
Tools
From time to time
I occasionally use Nginx to share local apps for testing, reverse-proxy setups, or lightweight deployment
Puppeteer
Tools
From time to time
Puppeteer was great for scraping tasks and automated browser interactions on a few projects
GraphQL
Backend
Rarely
I've explored GraphQL to understand its strengths and differences compared to REST APIs
gRPC
Backend
Rarely
I've explored gRPC to understand service-to-service communication and to implement strongly-typed RPC calls
Kubernetes
Tools
Rarely
Jest
Tools
Rarely
Used Jest occasionally for testing important backend and frontend modules
Happy to help, happy to build. Whether you have a question, a project idea, or just want to say hello, feel free to ask
Get in Touch
I'm always excited to work on new projects and collaborate with talented individuals. Whether you have a specific project in mind or just want to chat about possibilities, I'd love to hear from you.
Email
darosss12@proton.meLocation
Poland, Subcarpathia
I'm happy to answer
If you have any questions or want to start a project, feel free to reach out
Currently Available
I'm currently accepting new projects and collaborations. Let's discuss how we can work together!