Yauheni Zalenski Email & Phone Number

Warsaw, PL

Warsaw, Mazowieckie, Poland

• (Short-Term B2B Contract)Key Contributions:
• Frontend Development: Delivered key features for a business-critical application as part of an international team, ensuring scalability and robust performance.
• Collaborative Workflow: Coordinated with cross-functional teams to streamline development processes, contributing to a seamless integration of frontend solutions.
• High-Quality Code: Applied best practices in React.js to build maintainable, efficient, and user-friendly components, enhancing user experience.
• Agile Methodology: Worked within an Agile framework to ensure timely delivery of features while maintaining high-quality standards.

Warsaw, Mazowieckie, Poland

• Key Contributions:
• Technical Leadership: Successfully managed a team of 5+ developers in technical and architectural decision-making, leading to a 25% reduction in overall development time and smoother project workflow.
• Micro-Frontend Transition: Spearheaded the transition to a micro-frontend architecture, significantly improving the application's scalability by 40%, enabling modular deployments and reducing dependency conflicts.
• Custom Solutions: Developed customer-specific features to ensure that client requirements were met with precision, enhancing user experience and reducing iteration cycles by 20%.
• Innovative User Interface: Designed a clear and efficient user interface along with an adaptable architecture, which received positive feedback from stakeholders and helped reduce training time for new users.
• Team Mentorship: Mentored junior developers, implementing best coding practices and guiding them through complex problem-solving techniques, contributing to a 30% improvement in code quality across the team.

Warsaw, Mazowieckie, Poland

• Key Contributions:
• MVP Development: Architected the MVP version of the healthcare system focusing on scalability and ease of support, reducing the risk of future technical debt.
• Direct Customer Engagement: Collaborated directly with clients to identify and address all potential edge cases, which improved overall system reliability and led to a 15% decrease in reported issues post-launch.
• Technology Strategy: Selected key technologies (React, Redux, TypeScript) to ensure project success, resulting in an efficient development process and easier future maintenance.
• Ownership & Efficiency: Took complete ownership of most codebases, optimizing existing modules for better performance, reducing response time by 20%.

Minsk, Belarus

• Key Contributions:
• Donation Management System: Developed a donation management system that allowed seamless contribution tracking across multiple countries, ensuring compliance with local regulations.
• Performance Stabilization: Stabilized application performance, improving user interaction times by 35%.
• Architectural Extension: Extended the application’s architecture to accommodate additional features without compromising on performance, paving the way for future upgrades and flexibility.

Moscow, Russia

• Key Contributions:
• PDF Workflow Integration: Implemented a PDF workflow system that was integrated into the map interface, simplifying document management and improving overall efficiency.
• Expanded Functionality: Enhanced the application’s functionality to handle detailed driver trip data, improving data accuracy for transportation management and reducing manual data entry by 40%.

• Key Contributions:
• Framework Modernization: Successfully replaced an outdated framework with a new tech stack (Angular to React), which resulted in increased performance and a better user experience.
• Expanded App Functionality: Extended application capabilities for salary calculation and client management, making the system more efficient and reducing processing times by 25%.