Backend Web3 Jobs in London, United Kingdom

Founded in 2014, Ledger is the global platform for digital assets and Web3. Over 20% of the world’s crypto assets are secured through our Ledger Nanos. Headquartered in Paris and Vierzon, with offices in the UK, US, Switzerland and Singapore, Ledger has a team of more than 900 professionals developing a variety of products and services to enable individuals and companies to securely buy, store, swap, grow and manage crypto assets – including the Ledger hardware wallets line with more than 6 millions units already sold in 200 countries. 

At Ledger, we embody the values that make us unique: Pragmatism, Audacity, Commitment, Trust and Transparency. Hear from our employees how they shape the work we do here.

Ledger Live is a Desktop and Mobile application that helps you manage all your blockchain-backed assets. It’s built in ReactJS (Electron on Desktop and React Native on Mobile) and supports multiple blockchains (coins & NFTs) as well as providing multiple financial services (Buy, Swap, Sell).

The mission

• Build highly available, resilient, consistent and performant services to power Ledger’s products
• Integrate Staking, Yield and DeFi services through Partners API
• Interact with blockchain explorers to track Network events of interest (Fees, Transaction status…)
• Deliver robust APIs to allows agnostic consumption (Mobile, Desktop, Web)
• Proactively engaging in the architecture and design processes, ensuring the designed solution meets project requirements, can be achieved iteratively with a maximum level of feasibility.
• Maintain and make evolve the existing stack
• Conduct benchmarks to identify bottlenecks and optimize the overall performance of our services
• Deliver high quality piece of software (Test it, Document it, Demonstrate it)
• Design monitoring systems to detect unexpected failures / behavior and efficient alerting
• Develop and contribute to our CI / CD pipelines to deploy and secure workflows

What we're looking for

• 3+ years of experience in backend robust development
• Scala, Haskell or functional programming experience is a nice to have
• Java developers who are willing to dive into Scala technologies are welcome
• Database knowledge: SQL / NoSQL
• Adaptability to do teamwork in a fast-evolving environment
• Experience with continuous integration / deployment solutions
• You are autonomous, proactive and capable of self-training
• Knowledge of Containerization and Cloud deployments (AWS, Docker, Kubernetes)
• Knowledge on Event-based system
• Having an interest in cryptocurrencies and wishing to work with blockchain technology is a real plus
• Enthusiastic about teamwork, learning and teaching (meet-ups, hackathons, trainings …)

What's in it for you?

• Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
• Flexibility: A hybrid work policy
• Social: Frequent social events, snacks and drinks in our Holborn office
• Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
• Well-being: Personal development, coaching & fitness with our dedicated partners
• Vacation: 28 days of paid leave per year, in addition to national holidays
• High tech: Access to high performance office equipment and gadgets, including Apple products
• Transport: Ledger reimburses part of your preferred means of transportation
• Discounts: Employee discount on all our products.

We are an equal opportunity employer for all without any distinction of gender, ethnicity, religion, sexual orientation, social status, disability or age.