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Maryna H.

React Native Developer
3
years of experience

With 5+ years of experience in React Native, I specialize in building high-performance, scalable mobile apps that deliver seamless user experiences. My expertise includes Redux for efficient state management, React Navigation for intuitive flows, and Firebase for real-time data and authentication. Proficient in TypeScript, Expo, third-party API integrations, and native module development for iOS and Android, I ensure smooth cross-platform functionality. Committed to writing clean, maintainable code, I stay ahead of industry trends to create apps that are fast, reliable, and built to scale.

Upwork

React Native Developer
Kyiv, Ukraine
100
% Job Success
Top Rated Plus
Supabase
JavaScript
Next.js
GraphQL
GraphQL
Redux
TypeScript
TypeScript

Work History

IMPROVE MY REACT NATIVE BOOK-SHARING APP (ADD IN-APP WISHLIST+NOTIFICATIONS
Job in progress
5
Feb 26, 2025
-
Feb 28, 2025
Present
Working with Maryna has been pretty productive and easy at the same time! She truly nailed 🔥the React Native side of my book app. From making sure everything synced in…
Contact me on Upwork
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Meet me

Education

09/2018 - 06/2022 Kyiv National University of Culture and Arts BACHELOR DEGREE - Journalism and Public Relations 11/2020 - 02/2021 From 0 to 1 Online training Markup Developer 11/2021 - 09/2022 EPAM Front-End Online Program 08/2024 Meta React Native Course 08/2024 Meta Working with Data Course 08/2024 Meta Capstone (React Native App)

Languages

English: Upper-Intermediate, Ukrainian: Advanced

Skills

Zustand
Bootstrap
Expo
Axios
Redux
TypeScript
TypeScript
React

Upwork

React Native Developer
Kyiv, Ukraine
100
% Job Success
Top Rated Plus
Supabase
JavaScript
Next.js
GraphQL
GraphQL
Redux
TypeScript
TypeScript

Work History

IMPROVE MY REACT NATIVE BOOK-SHARING APP (ADD IN-APP WISHLIST+NOTIFICATIONS
Job in progress
5
Feb 26, 2025
-
Feb 28, 2025
Present
Working with Maryna has been pretty productive and easy at the same time! She truly nailed 🔥the React Native side of my book app. From making sure everything synced in…
Contact me on Upwork
arrow icon

Employment History

No items found.

Projects

React Native Developer

Skill tree

Duration:
1 week
Application for gamers.
Technologies
lodash
apisauce
reactotron
mobx
Expo
Requirements
Fix the problem with the app build.
Results
I efficiently identified, diagnosed, and implemented a solution to resolve the build issue, ensuring the successful compilation and deployment of the Skill Tree application. The use of React Native WebView enhances the application's functionality by allowing the integration of web content seamlessly. This can be beneficial for displaying dynamic or interactive elements within the gaming app.

React Native Developer

Fibber

Duration:
3 months
The app calculates proteins, fats, and carbohydrates for users and provides users with the amount of calories to achieve the concrete aim.
Technologies
lottie
reanimated
Zustand
Requirements
Results
The idea of this application is to control the mass of the human body to maintain a healthy lifestyle. Beautiful animations have been developed. Formulas for calculating calories for daily consumption have also been developed. Authorization based on Firebase has been implemented.

React Native Developer

Weilo

Duration:
3 months
Application for taxi drivers. The application provides drivers with amazing functionality, which can be very useful in their profession.
Technologies
mobx
reanimated
Stripe
Requirements
App implementatio. Fixing bug.
Results
I implemented the Weilo Taxi Driver Application, providing taxi drivers with a feature-rich and user-friendly tool. The application is designed to enhance the daily workflows and overall experience of taxi professionals. I ensured the integration of amazing functionalities that contribute to the application's utility and effectiveness in optimizing daily tasks and improving overall performance. The incorporation of Stripe facilitates seamless financial transactions for taxi services, adding a layer of convenience for both drivers and users. The use of rnmapbox/maps providing real-time navigation, route optimization, and an overall improved experience for taxi drivers and their passengers.

React Native Developer

Under NDA

Duration:
3 months
An application for taking care of physical and mental health, where you could take various surveys about your condition and make training schedules.
Technologies
Ramda
GraphGL
d3js
Prettier
Eslint
Requirements
Creating custom graphics using the d3js librar. Creating a cha. Updating librarie. Implementation of push notification. Testing with jes.
Results
Using the d3js library, the React Native Developer created custom graphics for the application. This includes visually appealing and informative representations of health-related data, providing users with valuable insights into their physical and mental well-being. The addition of a chat feature enhances support within the health management application. Users can now communicate, seek guidance, and share experiences, fostering a sense of community and support within the platform. Integrating push notifications enhances user engagement by providing timely updates and reminders related to surveys, training schedules, and other essential activities, contributing to a more interactive and user-friendly experience.

React Native Developer

Under NDA

Duration:
2 months
An application for organizing religious events and conducting live broadcasts from them.
Technologies
Axios
Jest
Redux
Requirements
Migrating to TypeScrip. Refactoring class component. Integrating payment functionalitie. Creating forms for payment and registratio.
Results
Through meticulous refactoring, I have improved the architecture and organization of class components. I implemented handy forms dedicated to both payment and registration processes. These forms are designed to streamline user interactions, making it intuitive for participants to register for events and contribute financially. The application benefits from a visually appealing and responsive design, aligning with contemporary mobile app standards. The integration of Stripe, a widely trusted payment processing platform, ensures secure and efficient financial transactions within the application. By incorporating Jest, the React Native Developer has implemented testing practices to ensure the reliability and stability of the application. This contributes to a more robust and bug-resistant codebase.

Full-Stack Developer

CGS-team Website

Duration:
9 months
Our goal is to provide you with the flexibility of an in-house team and act as your technical co-founder. Our mission is to analyze your idea carefully and protect your budget. As a mark of quality, we offer lifelong support and marketing assistance for every app we develop.
Technologies
ReactQuery
Next.js
Express.js
Styled Components
Requirements
Results
I worked on the Admin pane. Created new features for the site using Next.js, ReactQuery, Styled Component. Expanded API using Node.js, Express.j.

Full-Stack Developer

Health24 Mobile App

Duration:
1 year 2 months
Health24 is a medical service for patients with the ability to make an online appointment with a doctor and view their electronic medical record. Do you have a child or want to view your relatives' electronic medical record? Their medical documents are also easily accessible.
Technologies
Postman
Zustand
Requirements
Results
Worked on the mobile app of a medical service from scratc. Created the user interface based on complex API using React Native, Zustand, Postma.

React Native Developer

Piedwork

Duration:
6 months
Management application for people to track the working process, filling out reports, calculating income, and expenses.
Technologies
blur
picker
reanimated
Moment
Redux
Requirements
Creating new functiona. Creating animatio. Creating interactive elements using react-native-gesture-handle. Setting up Apple authenticatio. Creating paginated lists.
Results
The React Native Developer's six-month tenure at Piedwork has resulted in the successful development of a robust management application that empowers users to track work processes, fill out reports, and manage financials. By leveraging React Native and associated technologies, we have expanded the app's capabilities, ensuring it aligns seamlessly with the diverse requirements of users tracking work processes and managing financial data on mobile. The successful setup of Apple authentication adds a layer of security and aligns the application with industry best practices, catering to a broader user base. Through efficient data handling and pagination, the app ensures a seamless user experience, particularly when dealing with large datasets.

React Native Developer

AstraZeneca Platform

Duration:
6 months
The company is a global, science-driven, patient-focused pharmaceutical company committed to excellence in the discovery, development, and commercialization of prescription medicines. With approximately 90,000 people in 85 countries, their purpose is simple: to unlock the power of what science can do for people, society, and the planet.
Technologies
RESTful API
Nest.js
PostgreSQL
TypeScript
TypeScript
Requirements
Results
Worked on the DataBase structure, REST API for the client's platform using NestJS, PostgreSQL, TypeScrip. Participated in team meetings and brainstorm. Wrote documentation and test.

React Native Developer

Pushkah

Duration:
2 months
An application for people, which provides people with the ability to make donations for charity and send them to different foundations.
Technologies
yup
Zustand
Node.js
Stripe
Requirements
Setting up the ap. Configuring the ap. Implementing Firebase aut. Implementing notification. Implementing Stripe and be using Node.js for i. Implementing amazing animations with soun.
Results
Leveraging React Native, Firebase, and other cutting-edge technologies, the application seamlessly bridges the gap between technology and philanthropy. One of the standout features is the implementation of animations with sound using react-native-reanimated and react-native-sound. This adds a delightful and immersive element to the user interface and enhances the emotional connection users have with the act of giving. The inclusion of biometrics through react-native-biometrics adds an extra layer of security and convenience, streamlining the authentication process and instilling confidence in users to participate in charitable giving.

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See Our Work

The developers managed to do a large chunk of work in a short period of time. I recommend working with Incode Group for JavaScript development. Thanks to their unrivaled communication and expertise, they know how to do it in the best way possible and make it work, and the business pays off and monetizes.

John McCoy, CEO ProprHome
Lisbon, Portugal
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John McCoy

The MVP saw marked improvement thanks to Incode Group’s smooth communication and dedication to initial requirements. Their project management was a highlight of the engagement, as were their independent, methodical approach and honesty.

Kevin Peters, Agile Rockstars
Hamburg, Germany,
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Kevin Peters - CTO at Agile Rockstars from Hamburg, Germany.
Dan - Project Manager at Agile Rockstars LLC.

All the outsourcing their team completed was expertly done. Incode Group follows instructions carefully. They’re skilled, creative, and dedicated to achieving set goals. Customers can expect a professional development team that delivers in a timely manner.

Shane Robinett, Knetik Inc
Altamonte Springs, Florida
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Shane Robinett - CTO at Knetik Inc
Altamonte Springs, Florida
Mike Stewart - Project Manager at Knetik Inc

We developed an ERP/MRP web app for a successful e-commerce platform. Development process was smooth, and results were very satisfying. Communication is good, and developers are professional and knowledgeable. We are looking forward for more projects to do together.

David Tarbay, Head of Product
Tel Aviv, Israel
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