[gaming] In my role at SciPlay, I design, develop, and optimize backend services, including code quality through rigorous unit testing. My expertise in PHP, Unit Testing, and Docker allows me to play a key role in the success of the project upgrade and feature implementations.

• Reduced infrastructure costs by 50%. by optimizing code, cutting the number of required servers in half for a user base in the millions.
• Team effect. Decreased development setup time by 20% by implementing Docker, significantly improving the team’s efficiency with local environment setup.
• Enhanced maintainability through comprehensive code refactoring, aligning code with internal libraries and ensuring compatibility with PHP8.
• Improved product stability by reducing bugs in code by 90% , effectively eliminating recurring issues.

[e-commerce] As a contractor, I am a full-time out-staff worker at Kapten & Son - a fashion online store with almost 200 employees and 20 million unique visitors per year. I develop features for the store and many different inner web services. Daily, we are using the Spryker & Symfony frameworks.

• Accelerated order processing by developing end-to-end web services, streamlining order workflows from checkout to final delivery.
• Expanded product offerings by building configurable features, supporting the launch of new, multi-variant products and enhancing logistics operations.
• Boosted marketing efficiency by integrating Facebook and Google marketing tools; developed modules to track orders, manage abandoned carts, notify on product availability, and validate improvements through A/B testing.
• Optimized cross-department operations by connecting core services to the ERP system, enhancing communication and service efficiency across departments.

[e-learning, health care] This is a mobile program reinforcing personalized support to help individuals with cognitive disabilities to achieve independence across all of life’s domains.

• Secured startup investments by transforming an unstable prototype into a fully functional MVP, showcasing a reliable product to potential investors.
• Consolidated codebases from nine diverse sources, creating a  unified, maintainable environment across multiple applications and time zones, optimizing development workflows.
• Reduced maintenance hours from 8 hours to 15 minutes by transitioning the project to Docker, incorporating AWS services, and establishing CI/CD pipelines.

[e-learning] Platform for British schools. Provides functionality to fully maintain the study processes. You can create classes where teachers control students' progress through online courses and exams.

• Enabled automated payments by implementing Stripe subscriptions, allowing automatic withdrawals and reducing manual subscription management.
• Increased learning transparency by developing a progress-tracking system for students, with a user-friendly interface for course monitoring.
• Enhanced exam integrity with an anti-cheat system for online exams, reducing manipulation and improving data reliability.

[e-commerce][gaming] Remote contractor. Delivered three projects independently, including developing a small construction materials store on Prestashop, migrating an auto parts store to Opencart, and building a bet data analysis system for recommendation purposes.

Founded a web development studio and managed multiple projects simultaneously, gaining direct client experience and expanding team leadership skills.

I research the usage of Multi-Agent Artificial Intelligence in the chemical industry. I participate in scientific conferences and help teach students computer science.

[e-commerce][gaming][advertisement] Remote contractor. I developed and maintained plugins, themes, and APIs for WordPress and Joomla, delivering around 20 projects including e-commerce sites, corporate sites, and web applications, both individually and within teams.

[communications] Maintained and updated the website for Ukraine’s largest communication company branch, ensuring smooth operation and uptime for site visitors.

• Developed a variety of SaaS applications, APIs, Chat bots, and AI integrations , showcasing my commitment to continuous learning and solving real-world challenges. Projects include an AI-powered landing page generator, a job resume builder, and a book site featuring augmented reality - all available on my GitHub for public viewing.
• Volunteer Website Support. I actively support the website of a charity organization (https://chub.in.ua), ensuring smooth operation and updates as needed.
• University Contributions. During my studies, I developed a series of small corporate websites for science conferences and various university departments, enhancing visibility and functionality for academic initiatives.