Yusuf is available for hire
Hire YusufYusuf Kınataş
Verified Expert in Engineering
Front-end Developer
Istanbul, Turkey
Toptal member since September 13, 2021
Bio
Yusuf creates remarkable experiences for mobile and web. He implemented cross-platform applications for organizations and individuals with React Native and React. One of his applications had 100,000+ downloads on Google Play. His favorite part of being a software developer is constantly following new technologies and improve himself. Yusuf is used to working with small, fast-paced, and agile teams and he enjoys working closely with designers and PMs.
Portfolio
HASH
React, Next.js, TypeScript, GraphQL, Playwright, Material UI, HTML5 Canvas...
Cleevio
React, Next.js, TypeScript, GraphQL, Storybook, SWR, Sentry, Contentful
Modus Create
React Native, TypeScript, Redux, Storybook, SWR, MongoDB, Node.js, JavaScript...
Experience
- Git - 5 years
- React Native - 4 years
- Firebase - 4 years
- React - 3 years
- TypeScript - 3 years
- Node.js - 3 years
- Expo - 3 years
- Next.js - 2 years
Availability
Part-time
Preferred Environment
MacOS, Visual Studio Code (VS Code), Git
The most amazing...
...project I've developed is an Uber-like local delivery service for a wholesales called Metrobi. My client has been using it for years.
Work Experience
Front-end Developer
2022 - 2023
HASH
- Worked on two open-source projects called Block Protocol and HASH. The results of my work are public and can be found on GitHub at: https://github.com/blockprotocol/blockprotocol and https://github.com/hashintel/hash.
- Attached is a video of myself explaining some challenging parts of a complex JSON editor called "Entity Editor" at HASH: https://www.loom.com/share/d4dad37e76f44295947662f03051dc9b.
- Linked two PRs, opened at HASH are demo videos for a quick demonstration of what I've built: (1) https://github.com/blockprotocol/blockprotocol/pull/1257 (2) https://github.com/hashintel/hash/pull/2234.
- Provided an example PR review while working at HASH: https://github.com/hashintel/hash/pull/1060#pullrequestreview-1107626385.
Technologies: React, Next.js, TypeScript, GraphQL, Playwright, Material UI, HTML5 Canvas, OpenAI GPT-4 API, Framer, React Apollo
Front-end Developer
2021 - 2022
Cleevio
- Developed multiple features end-to-end for the GoodTrust project, which has more than 100,000 users.
- Refactored different parts of the codebase to improve sustainability.
- Contributed to code reviews and refinement sessions.
- Contributed to design with suggestions to improve UX and consistency.
Technologies: React, Next.js, TypeScript, GraphQL, Storybook, SWR, Sentry, Contentful
Front-end Developer
2021 - 2022
Modus Create
- Developed a podcast listening app empowered with social features.
- Customized components to make them usable with React Hook Form.
- Contributed to the design with UX suggestions and ideas.
- Handled pair coding and code review sessions with team members.
Technologies: React Native, TypeScript, Redux, Storybook, SWR, MongoDB, Node.js, JavaScript, APIs, REST, REST APIs, Expo.io
Front-end Developer
2020 - 2021
LeanScale
- Developed la3eb.com in two months with a team of three people.
- Built a component-based UI library for React and wrote unit tests for it.
- Led a front-end team of five people for four months at the DCA Food project. Provided them with sprint planning, knowledge distribution, and communication between different teams. Also worked closely with PMs and designers to overcome challenges.
- Contributed to product development with UX and feature suggestions.
- Refactored the DCA Food codebase to increase reusability and optimize performance.
- Handled pair coding and code review sessions with junior team members.
- Improved DevOps implementation for multiple React projects.
Technologies: React, Redux, Next.js, Sass, Cypress, JavaScript, HTML, CSS, APIs, REST, REST APIs
Front-end Developer
2019 - 2020
Metrobi
- Developed the mobile application from scratch in ten weeks. The app uses live location data, which enables the drivers to choose the delivery that suits them and follow the optimized route for delivery.
- Built the dashboard for delivery tracking, billing, KPI tracking, driver management, and more.
- Conducted interviews with software developers during the recruitment processes.
Technologies: React, React Native, MobX, Less, Styled-components, Firebase, Expo, JavaScript, HTML, CSS, Cloud Firestore, Expo.io
React Native Developer
2018 - 2018
Kodnet Mobile
- Developed an Instagram account analysis application that has 100,000+ downloads on Google Play Store.
- Refactored the existing codebase for performance improvements.
- Helped other team members with onboarding and solving their issues.
Technologies: React Native, JavaScript, APIs, REST, REST APIs
Game Developer
2017 - 2018
Dotto Games
- Developed six different mobile game prototypes with different mechanics.
- Implemented A* pathfinding algorithm for a match-3 game.
- Used an MVC design pattern to keep consistency between projects.
Technologies: Firebase
Experience
Manchmark
https://www.youtube.com/watch?v=TxXf3wlSK44A mobile app that allows everyone to evaluate and compare their skill levels with other users, considering the global average. It is based on six different skill categories, like visual memory, verbal memory, and more.
I developed the app using React Native and the back end for using Node.js.
I developed the app using React Native and the back end for using Node.js.
Narmoni
https://youtu.be/s_w2u2ULzBYA shopping assistant that allows people to save money while shopping for groceries.
I developed the app using React Native and all the back end using Firebase. I released the app on Google Play and App Store.
The application allowed people to reduce their monthly grocery expenses by an average of 10%.
I developed the app using React Native and all the back end using Firebase. I released the app on Google Play and App Store.
The application allowed people to reduce their monthly grocery expenses by an average of 10%.
MenuPratic
https://youtu.be/-X_y_f09vpwA QR-code menu application that allows customers to take less time and place their orders more comfortably.
I developed the mobile app using React Native with Expo and Firebase and released it on Google Play and App Store.
The app is actively used every day by more than 1,000 users and 50+ restaurants.
I developed the mobile app using React Native with Expo and Firebase and released it on Google Play and App Store.
The app is actively used every day by more than 1,000 users and 50+ restaurants.
Yenidunya Magazine
A magazine reader app built for a local magazine that helps subscribers to read the latest monthly issues on mobile devices.
I developed the app using React Native. I designed and implemented theme options and an article reader for a more customized and accessible user experience.
After the application was published, the number of subscribers of the magazine increased 1.5x.
I developed the app using React Native. I designed and implemented theme options and an article reader for a more customized and accessible user experience.
After the application was published, the number of subscribers of the magazine increased 1.5x.
Countime
https://countime.yusuf.appAn online and shareable countdown timer. Timers are on the cloud, so users can start and pause the same timer from different devices and close the browser. I set up CircleCI for continuous integration.
Personal Portfolio
https://yusufkinatas.com/My personal portfolio site, which was designed and developed by me. I've used micro-interactions to make the site feel more alive. Used Contentful as CMS to manage projects, work experiences, and other content like resume files.
Education
2015 - 2019
Bachelor's Degree in Computer Science
Yildiz Technical University - Istanbul, Turkey
Certifications
MAY 2020 - PRESENT
Figma Design Training
Udemy
MAY 2020 - PRESENT
In-depth Javascript
Udemy
MAY 2020 - PRESENT
Node.js Development
Udemy
MAY 2020 - PRESENT
Advanced React Native
Udemy
Skills
Libraries/APIs
React, MobX, REST APIs, Node.js, Playwright, HTML5 Canvas
Tools
Expo.io, Expo, Git, Postman, Bitbucket, CircleCI, Sentry, React Apollo, Figma
Languages
TypeScript, JavaScript, Sass, HTML, CSS, Less, GraphQL
Frameworks
React Native, Next.js, Redux, Cypress, Express.js, Material UI
Paradigms
REST, UI Design, UX Design
Platforms
Firebase, Algolia, Contentful
Storage
Firebase Realtime Database, MongoDB, Cloud Firestore
Other
Styled-components, APIs, Storybook, AdMob, SWR, OpenAI GPT-4 API, Framer
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