Senior Blockchain Developer (100% Remote - United Kingdom)

Tether Operations Limited; United Kingdom; Remote; GBP 60,000 - 90,000; Full time

Job summary

Join a leading company in digital finance as a Wallet Development Kit Software Engineer. Contribute to the open-source toolkit for self-custodial wallet applications while collaborating with a global team passionate about fintech innovation. The role requires strong Node.js and JavaScript skills, with a focus on security and scalability.

Qualifications

• 5+ years of experience with Node.js and JavaScript development.
• Experience building or integrating crypto wallets for DeFi/blockchain applications.
• Familiarity with modular architecture for scalable applications.

Responsibilities

• Contribute to innovative projects using agile methodologies.
• Ensure backend services are scalable and responsive.
• Maintain high security standards to protect user assets.

Skills

Node.js

JavaScript

Security practices

Peer-to-Peer technologies

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 solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, at a fraction of the cost. Transparency is the foundation of everything we do, ensuring trust in every transaction.

Innovate with Tether
Tether Finance: Our product suite features the trusted stablecoin USDT, used by hundreds of millions worldwide, and pioneering digital asset tokenization services.
But that’s just the beginning: Tether Power: Driving sustainable growth with eco-friendly energy solutions for Bitcoin mining in geo-diverse facilities.
Tether Data: Enhancing AI and peer-to-peer tech with solutions like KEET, our secure, private data sharing app.
Tether Education: Democratizing digital learning to empower individuals in the digital and gig economies.
Tether Evolution: Pushing technological and human potential boundaries to craft a future of unprecedented innovation.

Why Join Us?
Our global, remote team is passionate about fintech innovation. If you excel in English communication and want to contribute to the most innovative platform, Tether is your place. Join us to collaborate with top minds, push boundaries, and set industry standards. We’ve grown fast, stayed lean, and established industry leadership.
Are you ready to be part of the future?

About the job

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. The role involves technical design, implementation, and collaboration to enhance the toolkit's capabilities. Experience with wallet creation or DeFi is advantageous.

Responsibilities

• Contribute to innovative projects using agile methodologies and advanced technologies.
• Ensure backend services are scalable, responsive, and real-time to support growth.
• Maintain high security standards to protect user assets and data.

Requirements

• +5 years of experience with Node.js and JavaScript development.
• Experience building or integrating crypto wallets for DeFi/blockchain applications.
• Familiarity with modular architecture for scalable applications.
• Experience developing complex platforms and APIs.
• Understanding of Peer-to-Peer technologies.
• Ability to learn new technologies quickly.
• Strong security practices knowledge.

Nice to have

• Experience with high-availability systems.
• Knowledge of Go, Rust, or C++.
• Familiarity with message queues (Redis), caches, and job queues.
• Experience with mobile development (React Native, Flutter, Native).