MYKHAIL OVSIANNYKOV
React Native Developer | 5+ years experience-| https://www.linkedin.com/in/mikie-mac/
- | Poznan, Poland (GMT+2)
I offer 5+ years of hands-on experience in system design, development, shipping, and maintenance of
large-scale mobile and web products, having successfully delivered 10+ such projects. Additionally, I have
experience creating & leading teams and managing the entire development process, with 3+ successful
product deliveries as a Team Lead or Development Manager. I’m passionate about creating scalable,
high-performance solutions and enjoy mentoring teams to achieve outstanding results, and i always give
the results!
Specializations: React Native, React, JavaScript, TypeScript, Redux, HTML, CSS, Next, Node, FrontEnd Engineering, Mobile Engineering, Android Studio, xCode
PROFESSIONAL EXPERIENCE
Senior React Native Developer / Team Lead
ARBIPAY | Bratislava, Slovakia (Remote) | Feb 2023 - Now
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Have successfully created and launched 3+ high-scale projects
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Con gured all business processes to create an application from scratch, to publication and support
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Established interaction between departments during the development of mobile applications
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Managed the team
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Managed the tasks
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Was building frontend and mobile apps architecture
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Code review and mentoring
Middle React / React Native Developer
HELIOTROPE DIGITAL | London, UK (Remote, Short-Term Contract) | Nov 2022 - Feb 2023
Developing high-load CRM system with market-disrupting innovations
• Led the mobile application development process
• Was building frontend and mobile apps architecture
• Was part of a nimble front-end team that launched a fully-featured CRM system in less than six months
Middle React / React Native Developer
MEMCRAB | Vinnitsa, Ukraine | Mar 2022 - Jan 2023
Building a large-scale Tasks-Management System and big E-Commerce store
• Developed a successful MVP of a high-load mobile application in six months
• I'm was expanded and improved the middle level functionality in the large application.
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• I was part of the front-end team with whom he worked on the web version
Middle React Native Developer
ISQUAD | Kharkiv, Ukraine | Oct 2021 - Feb 2022
• Successfully identi ed and resolved technical issues in a mobile application, reducing incident response time and
improving overall product stability.
• Implemented an improvement to the application code that resulted in increased performance and reduced load on
device users, which in turn limited the overall user experience.
• Implemented new features that adhered to deadlines and coding standards, resulting in increased application
functionality and a consistent user experience
Lead Full-Stack Developer
G-OONE STUDIO | Kharkiv, Ukraine | Aug 2020 - Oct 2021
• 20+ successfully implemented projects of varying complexity
• Implemented a process for versioning projects and current code
• Developed designs for 5+ projects
• Code review and mentoring
Full-Stack Developer
FREELANCE | 2019 - 2021
• 50+ successfully implemented projects of varying complexity
• Covered the full development cycle, from concept and design to deployment and support, providing customers with
reliable and innovative solutions
• Implemented e ective strategies and tools that resulted in increased productivity and quality of projects, improving
customer satisfaction and reducing development time
PROJECTS
Swift Surf
ARBIPAY
Team size: 4
Role: Team Lead
Description: Mobile Browser
Link: https://play.google.com/store/apps/details?id=com.swiftsurf
Stack: Typescript, React Native, React, Next, MySQL, Postman, Zustand, React Navigation, Zod, MUI, i18next, Xcode, Android
Studio, Swift, Kotlin, Firebase, Push-Noti cations, Sentry, AppsFlyer, Git, Bitbucket, Jira, Figma
ARBIPAY
ARBIPAY
Team size: 12
Role: Team Lead
Description: Online Banking
Link: https://arbitaspay.com/
Stack: Typescript, React Native, React, Zustand, React Navigation, React Query, React Hook Form, Axios, Zod, i18next, Firebase,
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Push-Noti cations, Google Maps, Deep Linking, AWS S3, Xcode, Android Studio, Swift, Git, Bitbucket, Jira, Figma
MINEREX
ARBIPAY
Team size: 4
Role: Team Lead
Description: Cloud Mining
Link: https://play.google.com/store/apps/details?id=com.miningmobile
Stack: Typescript, React Native, React, Zustand, React Navigation, React Query, Axios, Zod, i18next, Google Maps, Deep Linking,
Xcode, Android Studio, Swift, Git, Bitbucket, Jira, Figma
LIQUID CRM
HELIOTROPE DIGITAL
Team size: 22
Role: Front-End Developer / React Native Developer
Description: HR Service (Web & Mobile)
Link: https://www.heliotrope.digital/portfolio/web-mobile-development/liquid-crm
Stack: Typescript, React Native, React, Next, Effector-Next, React Navigation, Axios, i18next, Google Maps, Deep Linking, AWS
S3, Xcode, Android Studio, Swift, Git, Bitbucket, Jira, Figma
WORKSFLY
MEMCRAB
Team size: 8
Role: React Native Developer
Description: Jira Analogue (Web & Mobile)
Link: https://play.google.com/store/apps/details?id=com.work y
Stack: Typescript, React Native, React, React Navigation, Zod, i18next, Lingui, Docker, Firebase, Push-Noti cations, Deep Linking,
Xcode, Android Studio, Swift, Git, Bitbucket, Jira, Figma
MEGASPORT
MEMCRAB
Team size: 16
Role: React Native Developer (Web & Mobile)
Description: E-Commerce
Link: https://apps.apple.com/ua/app/megasport-ua-fashion-store/id-
Stack: Typescript, React Native, React, React Navigation, Zod, i18next, Lingui, Firebase, Push-Noti cations, Deep Linking, Xcode,
Android Studio, Swift, Jest, Docker, Git, Bitbucket, Jira, Figma
UDAZZY
FREELNACE
Team size: 5
Role: React Native Developer
Description: Social Network
Stack: Javascript, React Native, React, Redux, Mapbox, React Navigation, Yup, Formik, Xcode, Android Studio, Swift, Git, Gitlab,
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Trello, Figma
EDUCATION
Master of Software Engineering
Kharkiv National University of Radio Electronics | Kharkiv, Ukraine |-
Bachelor of Software Engineering
Kharkiv National University of Radio Electronics | Kharkiv, Ukraine |-
LANGUAGES
English
Upper-Intermediate
Ukrainian
Native
Russian
Native
German
Pre-Intermediate
Polish
Elementary
