Frontend Engineer - React Native (External)

Serotonin
New York, NY

Our client is a cutting-edge company focused on revolutionizing global payments by building a scalable, zero-fee payment platform secured by Bitcoin. Their innovative technology enables fast, secure, and cost-effective digital transactions, with the potential to reshape how the world interacts with money.

We’re looking for a Mid-Level Frontend Engineer with expertise in React Native to join their team. In this role, you’ll build intuitive and responsive mobile applications that connect users to our cutting-edge payment platform, redefining the way the world transacts.

If you’re excited about joining a dynamic and purpose-driven environment where your ideas can shape the future, we’d love to meet you. Together, we can redefine what’s possible in the world of digital connectivity and data management.

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Key Responsibilities:
  • Develop, maintain, and optimize mobile applications using React Native for iOS and Android platforms.
  • Integrate blockchain-based functionalities and payment features into mobile applications.
  • Collaborate with cross-functional teams to design, develop, and deploy new features.
  • Optimize applications for performance, scalability, and cross-browser compatibility.
  • Integrate with blockchain technologies and APIs to deliver real-time data and interactions.
  • Participate in code reviews and contribute to maintaining high development standards.
  • Stay informed about emerging trends and best practices in frontend development and apply them to enhance the platform.

Key Requirements:
  • 3+ years of experience in frontend development, with at least 1–2 years focused on React Native.
  • Proficiency in JavaScript/TypeScript and experience building and deploying mobile apps for both iOS and Android.
  • Solid understanding of mobile UI/UX design principles and responsive design.
  • Familiarity with state management libraries like Redux or Context API.
  • Experience integrating APIs, including RESTful and WebSocket communication.
  • Knowledge of testing frameworks and tools for React Native applications.
  • Strong problem-solving skills and attention to detail.
  • Excellent communication and teamwork abilities.

Preferred Qualifications
  • Experience with blockchain or fintech applications.
  • Familiarity with Web3 libraries and integrating decentralized features.
  • Knowledge of native modules and bridging in React Native.
  • Background in performance optimization for mobile applications.
  • Contributions to open-source projects or personal mobile app development experience.

What We Offer
  • Competitive salary and equity options.
  • Flexible working hours and remote-friendly environment.
  • The chance to work on cutting-edge technology with a talented, passionate team.
  • Opportunities for professional growth and learning.

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Posted 2025-09-15

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