Stefanchak
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Enterprise-scale microservices platform serving one of the world's largest music labels, processing millions of digital media assets (video, audio, images) with high availability and performance requirements. Built with modern cloud-native architecture to handle large scale distribution workflows.
- Reduced operational costs and improved startup times by implementing Spring Native optimization of microservices - Led critical legacy system migration to microservices architecture, improving system scalability and maintainability - Delivered high-impact business features on schedule, consistently meeting client expectations and project deadlines - Enhanced application performance through database optimization, intelligent caching strategies, and proactive monitoring - Improved development velocity through strategic code refactoring and implementation of best practices - Collaborated with cross-functional teams to ensure seamless integration and deployment of new modules
Comprehensive quality management platform empowering large-scale manufacturers and mid-size companies to optimize product quality control and streamline supplier-consumer relationships. Features advanced analytics and real-time monitoring capabilities for enhanced operational efficiency.
- Collaborated effectively within a large agile development team, contributing to consistent sprint deliveries and project success - Provided critical production support, rapidly diagnosing and resolving complex technical issues to minimize downtime - Architected and implemented innovative technical solutions that improved system performance and user experience - Maintained high code coverage through comprehensive unit and integration testing, ensuring robust software quality - Mentored team members through thorough code reviews, providing knowledge sharing and maintaining high coding standards
Mobile-first fitness PWA app with offline sync, analytics, and optimized performance through GraalVM native compilation. Demonstrates full-stack expertise with modern Kotlin/Spring Boot backend and Angular frontend architecture. Provides comprehensive workout management with template creation, exercise library customization, and historical performance tracking across multiple devices.
Financial management PWA app with automated transaction import, data visualization, and optimized performance. This project showcases expertise in modern, secure architecture, integrating a Kotlin/Spring Boot backend with a responsive Angular frontend. It delivers financial oversight through multi-account management, detailed transaction categorization, and an interactive analytics dashboard accessible on any device.
