83 Best React JS Unit Testing Freelance Developers For Hire In April 2025

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Featured React JS Unit Testing Freelance Developers

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Senior Front-end Engineer

Los Angeles, California, US or remote

# Professional Experience ## Lead Front-end Engineer, Imarc (2020 – 2023) Built marketing and internal websites for Breezeline, eRegulations,...

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Senior Full Stack Developer

Los Angeles, California, US or remote

🚀 Developer Experience & Achievements 🚀 🔍 Duplicate Finder - Electron & React App: - Built an application that scans directories for...

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Senior Full Stack Developer

Madison, Wisconsin, US or remote

True end-to-end developer with strong frontend, backend, and devops chops. 11+ years working with clients such as Yale University, UW, NWF, The...

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Senior Software Engineer

Indianapolis, Indiana, US or remote

I've been working in development for over a decade with a primary focus on front end technologies. I have done back end and full stack work using...

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Senior Software Engineer

Boston, Massachusetts, US or remote

I worked with an early stage crypto token startup on finishing and launching their MVP after the existing developer left the project. I joined an...

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Senior Full Stack Javascript Developer

Omaha, Nebraska, US or remote

Specialties: • Front end JavaScript (React, AngularJS, Angular.io, and WebPack) • ES2021, and TypeScript • .NET Core Development (C#) •...

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Frontend Developer | React Developer

Union, New Jersey, US or remote

Frontend Developer | Frontend Engineer👨‍💻 with 5 years of experience implementing efficient, scalable web applications with 10,000+ users for...

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Senior Frontend Engineer - ReactJS/VueJS

Zamboanga, Zamboanga del Sur, Philippines or remote

Senior Frontend Engineer, TitanFX (via X-Team) Tech Stack: React 19, NextJS 15, TailwindCSS, Radix UI, Tanstack Table, React Hook Form, zustand,...

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Senior Software Engineer

GERLACH, Nevada, US or remote

I've worked on a lot of open source projects, mostly my own. I created BikeTag.org and am the author and maintainer of the unofficial imgur...

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Lead Frontend Engineer

Bengaluru, Karnataka, India or remote

I'm a working professional, having seasoned experience in front-end development with a high level of responsibility. I believe in developing modern,...

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Freelance React/Node.js Web Developer

Berlin, Berlin, Germany or remote

I'm a freelance web developer from Germany with over 15 years of experience. My passion is creating modern, user-friendly experiences with clean...

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Full Stack Engineer

GIlbert, Arizona, US or remote

Full Stack Engineer with expertise in incorporating cutting-edge technologies into projects and taking software or features from conception to...

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Product Engineer

Tampa, Florida, US or remote

I'm a very passionate web engineer with 10+ years of experience. I have an eye for detail, both visually and functionally, balanced with a big...

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Full Stack Web Developer, Consultant, Mentor, Technical Writer, Speaker, Book Author

Exeter, Devon, United Kingdom or remote

Work Experience Celestial — Lead Developer Nov 2022 - PRESENT - Led the development of the operations dashboard for the client who...

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Software Developer

New York, New York, US or remote

Software Developer - Zeplin: Architected and implemented reusable UI components using React.js, reducing development time by 25%. Conducted...

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Full Stack Developer | Web & Mobile

Brooklyn, New York, US or remote

I'm a full-stack developer with a strong foundation in creating modern, scalable web and mobile applications. With 4 years of hands-on experience,...

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React Developer

Zagreb, Grad Zagreb, Croatia or remote

-Set the groundwork for migrating from the legacy stack to React by migrating the Homepage and Header, implementing session management, a safety...

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Lead Software Engineer

Sao Paulo, Brazil or remote

Lead Software Engineer with 14 years of experience building fast and full-featured web applications, websites, and mobile apps in cross-functional...

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Freelance Web Developer

Raleigh, North Carolina, US or remote

Hi, I'm Andrew, a Freelance Full Stack Developer, Creator, and Entrepreneur based in Raleigh, NC. I'm currently open to new opportunities and love to...

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Frontend Developer

Seattle, Washington, US or remote

Indeed Inc. - Seattle, WA 📅 Jan. 2022 – Apr. 2023 Collaborated with three engineering teams, leading test automation efforts. Achieved 100%...

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