Senior Blockchain Engineer (100% remote - UK)
Senior Blockchain Engineer (100% remote - UK)

Senior Blockchain Engineer (100% remote - UK)

London Full-Time 43200 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and implement secure non-custodial wallet libraries using JavaScript.
  • Company: Join Tether, a leader in digital finance and blockchain innovation.
  • Benefits: Enjoy 100% remote work and collaborate with a global team of experts.
  • Why this job: Be part of a fintech revolution and push the boundaries of blockchain technology.
  • Qualifications: Strong experience in building cryptocurrency wallets and deep blockchain knowledge required.
  • Other info: Ideal for passionate individuals ready to innovate in the crypto space.

The predicted salary is between 43200 - 72000 £ per year.

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:

The Senior Blockchain Engineer will work on a wallet development kit, an open source tool for integrating various cryptocurrency primitives like payments, smart contract applications, L2 into various projects like payments app, AI agent integrations.

Key Responsibilities:

  • Design and implement modular non-custodial wallet libraries with support for multiple cryptocurrencies for mobile, web and server using Javascript.
  • Develop and integrate wallet modules for various blockchain protocols with focus on security and key management.
  • Create reliable payment processing systems that interface directly with blockchain nodes.

Minimum Requirements:

  • Strong experience building non-custodial cryptocurrency wallets and key management systems.
  • Deep understanding of blockchain principles like the UTXO model.
  • Hands-on experience running and maintaining blockchain nodes (Bitcoin, Ethereum, etc.).
  • Deep understanding of P2P networking concepts and distributed systems.
  • Strong focus on security best practices and cryptographic principles.
  • Advanced JavaScript/Node.js expertise, including:
    • Modern ES6+ features and async programming.
    • Buffer handling and cryptographic primitives.
    • WebSocket/REST/RPC API interactions.
    • Test-driven development practices.
    • Understanding of Node.js runtime architecture.

Nice to Have:

  • Experience with hardware wallet integration.
  • Familiarity with P2P technologies like Bitorrent/DHT/Holepunch.
  • Knowledge of BIP standards (BIP32, BIP39, BIP44, etc.).
  • Familiarity with Layer 2, token, DeFi protocols.

This role focuses on building a non-custodial wallet library using Javascript, while maintaining high security standards. The ideal candidate should be passionate about cryptocurrency technology and have a proven track record of developing secure, user-focused wallet solutions.

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Senior Blockchain Engineer (100% remote - UK) employer: Tether Operations Limited

At Tether, we pride ourselves on being a leading innovator in the fintech space, offering our employees the unique opportunity to work remotely from anywhere in the UK while contributing to groundbreaking projects that shape the future of digital finance. Our collaborative work culture fosters creativity and growth, providing ample opportunities for professional development and engagement with some of the brightest minds in the industry. Join us to be part of a dynamic team that values transparency, security, and the relentless pursuit of excellence in blockchain technology.
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Contact Detail:

Tether Operations Limited Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Blockchain Engineer (100% remote - UK)

✨Tip Number 1

Make sure to showcase your hands-on experience with non-custodial cryptocurrency wallets. Highlight specific projects where you've implemented wallet libraries or key management systems, as this will demonstrate your practical knowledge and expertise.

✨Tip Number 2

Familiarize yourself with the latest advancements in blockchain technology, especially around security best practices and cryptographic principles. Being able to discuss recent trends or challenges in the field during an interview can set you apart from other candidates.

✨Tip Number 3

Engage with the blockchain community through forums, webinars, or local meetups. Networking with other professionals can provide insights into industry standards and may even lead to referrals for job opportunities at Tether.

✨Tip Number 4

Prepare to discuss your experience with JavaScript and Node.js in detail. Be ready to explain how you've utilized modern ES6+ features and async programming in your previous projects, as this is crucial for the role.

We think you need these skills to ace Senior Blockchain Engineer (100% remote - UK)

Strong experience in building non-custodial cryptocurrency wallets
Key management systems expertise
Deep understanding of blockchain principles, particularly the UTXO model
Hands-on experience with running and maintaining blockchain nodes (Bitcoin, Ethereum, etc.)
Knowledge of P2P networking concepts and distributed systems
Strong focus on security best practices and cryptographic principles
Advanced JavaScript/Node.js expertise, including modern ES6+ features and async programming
Buffer handling and cryptographic primitives
Experience with WebSocket/REST/RPC API interactions
Test-driven development practices
Understanding of Node.js runtime architecture
Experience with hardware wallet integration (nice to have)
Familiarity with P2P technologies like Bitorrent/DHT/Holepunch (nice to have)
Knowledge of BIP standards (BIP32, BIP39, BIP44, etc.) (nice to have)
Familiarity with Layer 2, token, DeFi protocols (nice to have)

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with non-custodial cryptocurrency wallets, key management systems, and your deep understanding of blockchain principles. Use specific examples that demonstrate your expertise in JavaScript and Node.js.

Craft a Compelling Cover Letter: In your cover letter, express your passion for cryptocurrency technology and how your skills align with Tether's mission. Mention any relevant projects you've worked on, especially those involving wallet development or blockchain integration.

Showcase Relevant Projects: If you have worked on any open-source projects or personal projects related to blockchain or cryptocurrency, be sure to mention them. Provide links to your GitHub or portfolio to showcase your coding skills and contributions.

Highlight Security Practices: Given the focus on security in this role, emphasize your knowledge of security best practices and cryptographic principles. Discuss any specific experiences where you implemented these practices in your previous work.

How to prepare for a job interview at Tether Operations Limited

✨Show Your Passion for Blockchain

Make sure to express your enthusiasm for blockchain technology and its potential to revolutionize finance. Share any personal projects or experiences that highlight your commitment to the field.

✨Demonstrate Technical Expertise

Be prepared to discuss your experience with non-custodial wallets, key management systems, and blockchain protocols. Highlight specific projects where you implemented security best practices and cryptographic principles.

✨Understand Tether's Vision

Familiarize yourself with Tether's products and their impact on digital finance. Be ready to discuss how your skills can contribute to their mission of transparency and innovation in the fintech space.

✨Prepare for Problem-Solving Questions

Expect technical questions that assess your problem-solving abilities. Practice explaining your thought process when tackling challenges related to wallet development, payment processing, and security measures.

Senior Blockchain Engineer (100% remote - UK)
Tether Operations Limited
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  • Senior Blockchain Engineer (100% remote - UK)

    London
    Full-Time
    43200 - 72000 £ / year (est.)

    Application deadline: 2026-12-15

  • T

    Tether Operations Limited

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