Chegg

An educational IT company that provides online services for US students with an office in California. ● Independently designed and implemented a gateway MVP using Java, Kotlin, and the Spring Framework. ● Created an API for Salesforce via gRPC, customized authentication, and re-implemented legacy logic, improving system performance and scalability by 70%. ● Provided seamless interaction between the frontend and AI, reducing student skill assessment time by half. ● Implemented new approaches to authentication, enhancing system security and reliability.

Sberbank

The top bank in the country and one of the world's leading financial institutions. ● Developed a new data storage service in Java, providing integration with the existing platform. ● Achieved over 90% test coverage for core product functionality. ● Refactored core functionality to account for API usage, reducing code complexity and improving application compatibility.

Tinkoff

A large commercial bank, ranked among the top three banks in the country. ● Designed and implemented a process to automate debit products, reducing processing time by 30%. ● Implemented integration with internal processes for opening debit cards, improving application processing efficiency by 80%. ● Initiated and implemented improvements to the CI plugin for Gradle, speeding up the build and testing process and reducing errors.