- Lead a team of 5 engineers- Successfully transitioned a Node.js monolith to a microservices architecture using NestJS.- Developed an event-based system utilizing SNS and SQS, enhancing system responsiveness and scalability.- Built a tracing tool that allowed to follow client requests through all microservice, which significantly speeded up finding problems and resolving support requests.- Reworked the front-end from Angular to micro-frontends with React.- Actively participated in product planning and strategy.- Code review and mentoring. Onboarding newcomers.

- Designed and built from scratch a platform for onboarding new customers and managing ads across multiple networks (Facebook, Google, Unity, TikTok).- Developed an activity log tool, which was a foundation for all kinds of history based analyses.- Implemented a competition (business event) mechanism allowing easily attract a lot of new users.- Built a custom recurring mailing strategy, increasing users retention.- Actively participated in technical design for all core parts of the system.- Created a serverless tool for processing videos.- Collaborated with cross-functional teams to ensure seamless integration of new features.

- Developed an internal tool for collecting and analyzing mobile game ads data.- Built a high performance. web platform from scratch.- Implemented microservices architecture, enhancing system maintainability and scalability.- Optimised heavy database queries, significantly improving performance.

- B2B tool for managing and analyzing internal employees.- Platform for freelancers, similar to Upwork but focused on designers.- Internal platform for Acura employees.- Created several WordPress plugins for a customer.

- Learned the basics of JavaScript, PHP, and WordPress.- Developed and maintained WordPress themes and plugins, gaining foundational knowledge in web development.