🚀 Senior Full-Stack Developer | 10+ Years Experience 💻 Building scalable, high-performance web applications used by thousands worldwide
I’m a results-driven Full-Stack Developer with over a decade of experience designing and delivering scalable, production-ready applications. I specialize in modern JavaScript ecosystems, building robust backend services, and crafting high-performance frontend experiences.
I’ve worked on enterprise-scale platforms serving 120K+ monthly users and APIs handling millions of daily requests, focusing on performance, maintainability, and clean architecture.
- JavaScript (ES6+), TypeScript
- React.js, Next.js, Vue.js, HTML5, CSS3, Modern UI Systems
- Node.js, Express.js, REST APIs, GraphQL
- Microservices Architecture
- Clean Architecture
- Domain-Driven Design (DDD)
- Event-Driven Systems
- CQRS
- SOLID Principles
- PostgreSQL, MongoDB, MySQL / MariaDB, Redis
- AWS, Azure
- Docker, Kubernetes
- CI/CD (GitHub Actions, GitLab CI)
- JWT Authentication
- OAuth2
- OWASP Best Practices
- Jest, Cypress, Integration & API Testing
- 🏗️ Architected scalable full-stack systems supporting 120K+ active users
- ⚡ Improved application performance by 40% through frontend optimization
- 🔄 Built APIs processing 2M+ requests/day with optimized latency
- 🧩 Reduced frontend code duplication by 45% via modular architecture
- 🚀 Automated CI/CD pipelines, reducing deployment time by 75%
- 🔍 Enhanced observability, reducing debugging time by 50%
- 🔐 Implemented secure authentication systems using JWT & OAuth
- Building scalable and maintainable full-stack architectures
- Optimizing performance across frontend and backend
- Designing clean, reusable, and testable codebases
- Modernizing legacy systems into modern tech stacks
- Delivering real-world, production-ready applications
- https://department-ms.vercel.app/
- https://wanderlust-1-ieit.onrender.com/
- https://pixora-nry.vercel.app/
- https://rent-a-ride-two.vercel.app/
- https://sensai-bysamee.vercel.app/
- 📧 viktor19980785@gmail.com
- 💼 LinkedIn: www.linkedin.com/in/viktor-majewski
I enjoy turning complex problems into simple, scalable solutions—and continuously improving systems to perform faster, better, and smarter.
⭐️ Feel free to explore my repositories and see my work in action!