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Frontend Engineer (React.js/Next.js)

Sundayy

📍 United States, US0💼 Full-time🕐 6/3/2026
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Role overview

Sundayy is hiring for the Frontend Engineer (React.js/Next.js) role in United States, US. It is full-time, Mid-level level, in the Tech sector. It was posted 6/3/2026.

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Role
Frontend Engineer (React.js/Next.js)
Company
Sundayy
Location
United States, US
Work mode
On-site
Employment
Full-time
Seniority
Mid-level
Sector
Tech
Posted
6/3/2026

Description

About The Company Our client is a leading entity in the cryptocurrency trading technology sector, renowned for operating one of the largest and most advanced trading platforms in the industry. The platform facilitates over $25 billion in trading volume daily and serves a community of more than 50,000 active users worldwide. Known for their commitment to speed, innovation, and reliability, they provide sophisticated on-chain trading tools such as dollar-cost averaging (DCA), limit orders, sniping, and automatic wallet copy-trading. Their continuous growth and market share expansion are driven by a focus on cutting-edge technology and user-centric solutions, establishing them as a benchmark in the crypto trading space. About The Role We are seeking a highly skilled and autonomous Senior/Staff Front-End Developer to join our client’s dynamic team remotely, preferably based in the US or Europe. In this pivotal role, you will lead the development of a new high-performance, web-based trading terminal designed to enhance user experience and replicate the platform's hallmark speed and efficiency on the web. Your expertise will be instrumental in translating complex trading functionalities into a seamless, responsive, and real-time web application. Collaborating closely with backend developers and product teams, you will ensure the delivery of a robust, scalable, and innovative trading interface that meets the high standards of the industry and our client’s users. Qualifications 5+ years of experience in front-end development, with a strong focus on React/NextJS and TypeScript. Proven experience building frontend components for trading platforms or financial exchanges. Previous experience in leading or contributing significantly to critical platform components and decision-making processes. Ability to work independently, proactively managing tasks and driving projects forward. Expertise in creating fast, dynamic, and optimized web interfaces. Strong understanding of real-time data handling and WebSocket management. Innovative mindset with the ability to identify challenges and implement effective solutions quickly. Genuine interest and understanding of cryptocurrency, DeFi, and trading trends. Responsibilities Develop and maintain a responsive, user-centric web application utilizing React/NextJS and TypeScript. Implement best practices for performance optimization to ensure the application remains fast and responsive across devices, especially on mobile. Support the integration and management of real-time data streams via WebSockets to enhance trading functionalities and user interactions. Collaborate closely with the Senior Full-Stack Developer to ensure seamless front-end and back-end integration. Address complex technical challenges with innovative solutions that significantly improve user experience and platform stability. Champion code quality by delivering clean, maintainable, and well-documented code, fostering a sustainable development environment. Participate in technical decision-making, including selecting appropriate tech stacks and design patterns. Stay updated on industry trends, particularly in DeFi and trading technology, to continually improve the platform. Benefits Competitive base salary ranging from $200,000 to $300,000, complemented by performance bonuses. Flexible remote work arrangements, allowing you to work on your own schedule. Opportunity to work on impactful projects that directly influence one of the most used trading tools in the market. Be part of a lean, innovative team that embraces continuous learning and technological advancements. Access to cutting-edge tools and technologies in the crypto and DeFi space. Equal Opportunity At MLabs, we are committed to fostering an inclusive and diverse workplace. We provide equal employment opportunities to all candidates regardless of race, gender, age, disability, religion, or background. Our hiring process is accessible, and we are happy to accommodate any reasonable adjustments needed during the recruitment process. We believe that diverse teams drive innovation and excellence, and we welcome applicants from all backgrounds to join us in shaping the future of crypto trading technology. If you require any accommodations or wish to access the job advert in an accessible format, please contact us at [email protected].

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