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Aleksandr – React Native, Typescript, Redux Toolkit, experts in Lemon.io

Aleksandr

From Poland

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Mobile DeveloperSenior
Hire developer
6 years of commercial experience
Healthcare
Healthtech
Mental healthcare
Telecommunications
Mobile apps
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Aleksandr – React Native, Typescript, Redux Toolkit

Aleksandr is a highly motivated and results-oriented Senior Mobile Developer with over 6 years of experience with React Native. He possesses proven leadership skills and has a successful track record of guiding and inspiring teams to achieve project goals. Aleksandr demonstrates expertise in React Native and Typescript development, consistently delivering high-quality solutions in dynamic and challenging environments.

Main technologies
React Native
6.5 years
Typescript
6.5 years
Additional skills
Redux Toolkit
Xcode
Stripe API
Redux Saga
Android Studio
React Hooks
Fastlane
Jest
MobX
Firebase
JavaScript
Redux Thunk
GraphQL
REST API
Bluetooth
CI/CD
Ready to start
after 1tst of July
Direct hire
Potentially possible

Experience Highlights

Senior React Native Developer
Jan 2022 - Mar 20242 years 1 month
Project Overview

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

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Responsibilities:
  • 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.
Project Tech stack:
React Hooks
React Native
Redux Saga
Redux Toolkit
Android Studio
Xcode
Stripe API
Jest
Fastlane
Firebase
Senior React Native Developer
Dec 2020 - Jan 20221 year 1 month
Project Overview

Biggest Ukrainian telecommunication company.

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Responsibilities:
  • 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.
Project Tech stack:
React Native
MobX
React Hooks
Jest
Android Studio
Xcode
Fastlane

Education

2022
Computer Science
Masters

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