Mobile Engineer - React Native (100% Remote)

Tether; Ticino; Remote; CHF 90,000 - 120,000; Full time

Job summary

Tether is hiring a mobile software engineer to advance Keet Mobile across iOS and Android. You will own features end-to-end, from UI/UX to the P2P core APIs, and collaborate with design and product teams to deliver high-quality experiences.

You’ll work with React Native, Redux, and native tools to optimize performance, implement push notifications and device integrations, and ensure robust, testable code in a remote, globally distributed team.

Qualifications

• Experience with React Native for mobile apps including iOS and Android.
• Strong knowledge of Redux and Redux-Saga for state management.
• Proficiency in modern JavaScript (ES6+) and async patterns.
• Experience working with WebSockets and RESTful APIs.
• Familiarity with native development tools (Xcode/Android Studio) and CI/CD processes.

Responsibilities

• Develop and maintain Keet Mobile (iOS/Android) using React Native and Expo.
• Own features end-to-end from UI/UX to P2P core APIs.
• Build chat, voice/video, media sharing, device pairing, identity backup.
• Integrate push notifications, camera, biometrics, background tasks.
• Profile and optimize performance on real devices; support CI and crash reporting.
• Collaborate with P2P, design and product teams; participate in code reviews.

Skills

React Native

Redux

Redux-Saga

JavaScript

ES6+

WebSockets

REST APIs

Swift

Kotlin

CI/CD

Tools

Expo

Xcode

Android Studio

Job description

Join Tether and Shape the Future of Digital Finance

At 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 Tether

Tether 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

In this role, you will develop and maintain Keet Mobile, our peer-to-peer chat and calling app for iOS and Android. Keet Mobile is built with React Native and Expo, and its P2P core runs on the device itself in a Bare worklet. You'll own features end to end, from UI/UX implementation to using the P2P core apis.

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 .