Software Engineer - Backend Scala

We're making the world of digital assets accessible and secure for everyone. Join the mission.

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 700 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 7 millions units already sold in 200 countries.

At Ledger, we embody the values that make us unique: Pragmatism, Audacity, Commitment, Trust, and Transparency. Have a look at our Origins video here.

We are looking for a backend developer. You will be responsible for developing and scaling backend applications to allow millions of people to securely benefit from Web3 and process their transactions in the cryptocurrency world.

Do you want to develop high-performance solutions? Thriving for the best software quality is a requirement for your day-to-day tasks. Join a team, be part of one of the world’s pioneers in one of the most innovative technology sectors!

You will join the backend blockchain team which is in charge of building and maintaining Ledger blockchain infrastructure, data services, and indexing layers. The team is composed of passionate Engineers who believe in the benefits and strength of functional programming to develop robust and scalable platforms and APIs, while also being eager to understand and implement product and business requirements. We use Scala extensively to build our backend services and tooling. Have a hand-on experience with it is a great plus, but if you don't know it we will teach it to you. We are convinced that being an engineer is also taking time to challenge, discuss and share what we are working on. We take time to have every other week a dedicated knowledge-sharing meeting and participate actively in the community (Meetups, Conferences, Open source contributions, etc…).

Your missions:

• Build highly available, consistent, and performant services to power Ledger’s products
• Leverage all the power of functional programming with Scala and the Typelevel stack
• Deploy and maintain a large fleet of blockchain nodes in a scalable fashion
• Dive into cryptocurrencies protocols internals
• Conduct benchmarks to identify bottlenecks and optimize the overall performance of our services
• Deliver a high-quality piece of software (Test it, Document it, Demonstrate it)
• Design monitoring systems to detect unexpected failures/behavior
• Use CI / CD to deploy and secure workflows

What we’re looking for:

• Knowledge of backend services programming
• Knowledge of relational databases and SQL (we use Postgres)
• Knowledge of Linux operating systems
• Adaptability to do teamwork in a fast-evolving environment: You are autonomous, proactive, and capable of self-training
• Experience with continuous integration/deployment solutions
• Knowledge of Containerization and Cloud deployments
• 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, training…)

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: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
• Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage. Well-being: Personal development, coaching & fitness with our dedicated partners.
• Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days.
• 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.