Mobile Engineer - React Native (100% Remote)

OpenKrill; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Tether is hiring to bring Keet Mobile to iOS and Android, delivering our peer-to-peer stack and a React Native UI. You’ll contribute to features across chat, voice and video, while integrating native capabilities and ensuring smooth performance on real devices.

Join a global, remote-friendly team and help push the boundaries of fintech mobile experiences with modern tooling, robust testing, and a high standard for quality.

Qualifications

• Significant experience with React Native, Redux for state management and Redux-Saga.
• Proficient in JavaScript (ES6+) and modern web/mobile development.
• Experience with WebSockets and RESTful APIs.
• Knowledge of native languages (Swift/Kotlin) and familiarity with native build tools (Xcode/Android Studio).
• Experience working with a remote team.

Responsibilities

• Build and polish features across chat, voice and video calls, media sharing, device pairing and identity backup
• Integrate native platform capabilities such as push notifications, camera, bio-metrics and background tasks on both iOS and Android
• Profile and optimise performance on real devices, including startup time, long chats, media handling, battery and network use
• Write unit and end-to-end tests, and help keep releases stable through CI and crash reporting
• Work closely with the core P2P, design and product teams, and review code with a high bar for quality

Skills

React Native

Redux

Redux-Saga

JavaScript (ES6+)

WebSockets

RESTful APIs

Swift/Kotlin

Remote teamwork

P2P frameworks

Tools

Xcode

Android Studio

CI/CD pipelines

Job description

Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction.

Innovate with TetherTether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.But that’s just the beginning:Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities.Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways.

Why Join Us?Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.Are you ready to be part of the future?

About the job

We have launched Keet Mobile on iOS and Android, bringing our full P2P technology stack to everyone. Keet Mobile is not your average app: it’s heavy lifting is performed by a custom JS runtime specially designed for peer-to-peer usage (in fact, it reuses 100% of Keet Desktop’s code!). The UI logic, on the other hand, is 100% React Native, giving us flexibility and the ability to iterate quickly.

We believe this pattern opens the door to huge possibilities in the future, and we need your help getting there!

Responsibilities

You will:

• Build and polish features across chat, voice and video calls, media sharing, device pairing and identity backup
• Integrate native platform capabilities such as push notifications, camera, bio-metrics and background tasks on both iOS and Android
• Profile and optimise performance on real devices, including startup time, long chats, media handling, battery and network use
• Write unit and end-to-end tests, and help keep releases stable through CI and crash reporting
• Work closely with the core P2P, design and product teams, and review code with a high bar for quality

• Significant experience with React Native, Redux for state management and Redux-Saga
• Highly proficient in JavaScript and ES6+
• Experienced with WebSockets, RESTful based APIs.
• Knowledge in native languages (Swift/Kotlin) and familiarity with native build tools (Xcode/Android Studio) is advantageous.
• Experience working with a remote team
• Interested in modernizing and optimizing different mobile or web applications.
• Bonus points if you have any built something amazing on any p2p frameworks .