Aleksandr – React Native, Typescript, Redux Toolkit

Mental health application which provides subscription-based access for different user plans.

• Directed the mobile team, enhancing code reusability and readability by 40% through comprehensive peer code reviews, resulting in a 25% reduction in bug-related incidents and a 30% increase in release efficiency;
• Optimized app performance, completely refactoring an application flow and codebase, which led to decreasing the crash rate of the app from 19.8% to 0.07% and increasing app store ratings from 2.9 to 4.3;
• Revamped internal company core packages and optimized CI/CD pipelines, slashing build times by 50% and accelerating release cycles, leading to a boost in overall productivity;
• Led cross-functional team efforts in product planning and feature prioritization; translated stakeholder requirements into technical specifications, accelerating product launch timelines by 20% and boosting user engagement by 50%;
• Orchestrated comprehensive mentoring for a newcomer, including systematic code reviews and targeted skill development sessions, achieving promotion to Middle Developer and a reduction in code review defects.

Biggest Ukrainian telecommunication company.

• Developed MyKyivstar application, an app of the biggest telecom company in the country with 3,2M MAU;
• Engineered new user flows and added 10+ innovative features, significantly enhancing user experience, which led to a 20% rise in MAU and a 25% increase in user retention rates;
• Implemented best practices and architectural patterns to enhance performance, scalability, and maintainability, resulting in streamlined development processes and accelerated time-to-market.

Medical trial portal and application for EMS suit

• Led the development of an admin panel to control medical trials and appointments, collaborating with cross-functional teams and integrating cutting-edge technologies to enhance efficiency and scalability by 40%.
• Led the end-to-end development of an app that connects to EMS suits via Bluetooth, enhancing user experience and increasing training session adherence by 80%.