Serhii Starostenko Email & Phone Number

Харьков, Харьковская Область, Украина

I led the development of the application's front-end, aiming to create an interactive web platform that supports both user engagement in online masterclasses and their ability to host unique sessions. The user onboarding was efficiently managed through Microsoft OAuth 2.0, providing a secure registration process.Once registered, users gained complete control of their accounts, personalizing profiles and organizing class schedules. I developed an intricate class management system… Show more I led the development of the application's front-end, aiming to create an interactive web platform that supports both user engagement in online masterclasses and their ability to host unique sessions. The user onboarding was efficiently managed through Microsoft OAuth 2.0, providing a secure registration process.Once registered, users gained complete control of their accounts, personalizing profiles and organizing class schedules. I developed an intricate class management system, covering aspects like pricing, content, tags, and multimedia, all focused on enhancing the user experience.A key feature of the app was its advanced payment management, allowing users to easily handle payments, manage disputes, and oversee transactions. The integration of Microsoft Video and Chat libraries enabled real-time communication, elevating the user experience further.Additionally, I developed a mobile version using React Native, replicating the web platform's features. This included registration, login, push notifications, account management, a detailed masterclass catalog, and a scheduling system.Main responsibilities:● Design and configuration of the fully automated CI/CD lifecycle for the high-volume online service decreasing the time-to-market cycle.● Improved product aesthetic and realized the best UX solution for the business-critical progressive web application.● Resolved technical problems relating to the business-critical customers-facing portal resulting in system performance and scalability improvements.● Guided a Junior Specialist's growth and contributed to his final evaluation. Show less

Харьков, Харьковская Область, Украина

I was entrusted with developing three web applications for a prominent European bank, each with its own distinct role:The first application was designed for internal bank employees. I expanded its functionalities beyond the MVP stage, with a focus on enhancing transaction management and account administration.The second application, built from scratch, catered to bank customers. I implemented a comprehensive user authentication system (including login, registration, and password… Show more I was entrusted with developing three web applications for a prominent European bank, each with its own distinct role:The first application was designed for internal bank employees. I expanded its functionalities beyond the MVP stage, with a focus on enhancing transaction management and account administration.The second application, built from scratch, catered to bank customers. I implemented a comprehensive user authentication system (including login, registration, and password recovery) and incorporated features for accessing profile information, account balances, and transaction history.The third application played a crucial role in the bank's 3D Secure payment confirmation system. It generated unique URLs for users and displayed transaction details alongside a critical countdown timer, which, upon expiration, locked the interface for added security.Additionally, I handled the dynamic generation of PDF reports from JSON data to match the design specifications for the first two applications.To facilitate resale to other smaller banks, I devised a deployment system that allowed for customized functionality and design tailored to each institution's unique requirements.In a mentorship role, I guided two React Native developers, including one involved in the banking project. I regularly collaborated with them on complex tasks and co-developed innovative features.Main responsibilities:● Managed the development of two parts of banking applications.● Participated in the creation of business requirements.● Participated in interviews with new candidates and code reviews in other projects. Show less

Харьков, Харьковская Область, Украина