Frontend Desktop Engineer

Tether; São Paulo; Remote; BRL 120,000 - 190,000; Full time

Job summary

Tether seeks a frontend engineer to develop Keet Desktop on the Pear runtime, building a cross‑platform P2P communications app with React and TypeScript.

You will optimize UI performance, implement state management, and collaborate with a remote, globally distributed team to push decentralized communications forward.

Experience with Electron/desktop runtimes and WebRTC is a plus; strong testing and code quality are required.

Qualifications

• Experience with React/Preact in production-scale apps.
• Strong JS/TS skills and modern frontend tooling.
• Experience with state management patterns (Redux, etc.).
• Interest in P2P or distributed systems.
• Ability to work in a remote, distributed team.

Responsibilities

• Develop and maintain Keet Desktop, the cross-platform P2P communications app built with React on the Pear runtime.
• Handle UI/UX implementation and performance optimization to ensure a smooth user experience.
• Collaborate with a globally distributed team, contributing to code quality and testing.
• Contribute to architecture decisions for decentralized communications platforms.

Skills

React/Preact

JavaScript/TypeScript

Redux/State management

Testing & Debugging

P2P/Distributed tech

Remote collaboration

Tools

Electron

WebRTC

Pear runtime

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

Our pioneering P2P development platform, built on our open-source technology stack, Pear, eliminates the need for traditional server infrastructure. Pear platform facilitates direct deployment of applications from the developer’s machine to the user, enabling seamless scalability and performance. By leveraging Node.js-based technology akin to BitTorrent, we create robust peer-to-peer connections and data replication systems that set the foundation for a decentralized web. Learn more about Pear: docs.pears.com. Keet, our flagship P2P communications app, is the first step towards this new era. It exemplifies the potential of P2P technology in everyday applications, from messaging and file sharing to complex collaborative environments, all while maintaining user sovereignty over personal data. Learn more about Keet: keet.io.

Responsibilities

In this role, you will be responsible for developing and maintaining Keet Desktop, our cross-platform P2P communications application built with React and running on the Pear runtime. You'll work on everything from UI/UX implementation to performance optimization, helping shape the future of decentralized communication.

• Proven experience with React/Preact and modern JavaScript/TypeScript in production-scale applications.
• Strong competency in state management (Redux, Redux Toolkit, Zustand, or similar).
• Ability to write modular, maintainable, and well tested code.
• Solid skillset in testing & debugging complex frontend applications.
• Deep interest or experience with P2P technologies or distributed systems.
• Comfort working in a remote, globally distributed team; good communication skills.

Preferred Qualifications

• Experience with desktop application development (Electron, Tauri, or similar runtimes).
• Familiarity with video/audio APIs (WebRTC, media streams) and real-time communication.
• Demonstrated ability to optimize UI performance: rendering, memory management.
• Experience building cross platform applications (macOS, Windows, Linux, etc).
• Bonus: Past contributions to OSS projects, especially in P2P or decentralized tech.