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OLEH KALYNOVSKYI
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LinkedIn / GitHub
Lviv, Ukraine

JAVASCRIPT (REACT/REACT NATIVE) DEVELOPER
Experienced JavaScript Developer with a strong background in React and React Native. Proven track record of
developing high-quality web and mobile applications, including commercial apps, NFT games, and crypto
trading platforms. Skilled in TypeScript, Next.js, Redux.js, and various AWS services. Adept at working with
modern frameworks and tools such as GraphQL, MUI, and Tailwind CSS. Holds a Master’s degree in Political
Science and has international educational experience. Committed to delivering efficient and scalable solutions
in fast-paced environments.

STRENGTHS AND EXPERTISE
Redux/Context React/Next.js React Router
CSS/MUI/Tailwind CSS React Native GraphQL/REST
Storybook.js TypeScript API/WebSocket/React Query
git(Github/Gitlab AWS(DynamoDB, Lambda,
Bitbucket) Amplify)

PROFESSIONAL EXPERIENCE
08/2021 — 09/2022
React/React Native developer at SoftVision, Lviv
My first job where I got acquainted with most of the technologies I still work with and I continue to
hone my skills.

Gambling App
Developing a mobile application for gambling with a focus on providing a smooth user experience
across platforms using React Native. Utilized Redux.js for efficient state management and styled the
application with CSS. Integrated GraphQL for optimized data queries and Hasura for backend services.
Deployed various AWS services to ensure scalability and robustness.
Technologies Used: Redux.js, CSS, GraphQL, Hasura, React Native, JavaScript, TypeScript, Amazon
Web Services (AWS)

NFT Game
Development of game functionality for buying NFTs and mining with their help. Deployed the game on
the WAX testnet to facilitate blockchain transactions. React.js for the front end and smart contract for
connecting with the blockchain
Technologies Used: React.js, TypeScript, Next.js, Redux.js, CSS, Git, WAX testnet
Crypto Trading Platform
Developed a crypto trading platform aimed at providing a user-friendly trading experience. Utilized
React.js for building the UI, managed state with Redux.js, and styled the application using CSS.
Integrated TypeScript to enhance code quality and maintainability. Employed Git for efficient version
control. The platform focused on user experience and security in cryptocurrency trading.
Technologies Used: Redux.js, React.js, TypeScript, CSS, Git
React/React Native developer at Springs, Lviv 09/2022 — Present

Food delivery app
Development of a React-native application for food delivery in South Africa. I was engaged in
setting up the project and primary architecture. React-admin was used to design the admin page.
MUI, React Native, TypeScript, React-admin

Find and book hotels and flights app
Application for a travel company to find and book hotels and flights. I was engaged in the full
development, optimization, and speed of the site. WebSockets were used to receive data in real-time
Amazon Web Services (AWS), Tailwind CSS, React.js, TypeScript, WebSocket

Other experience
In addition, he was involved in the correction of other projects, their optimization, and the introduction
of new features.
Creating a Storybook for AI project and introducing new features
Fix calculator logic for steel companies
Updated React-native project to new versions introducing new features and bug fixes for the
healthcare project
Great experience in disassembling, understanding, and debugging projects after developers from
India

EDUCATION

The National University of Ostroh Academy
Master's degree, Political science

Uniwersytet Warszawski
Master's degree, Central Europe

LANGUAGES

Ukrainian Native

Polish Proficient

English Intermediate