Senior Backend Engineer

**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 15% 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 5 millions units already sold in 180 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. The Ledger Vault is a SaaS solution addressing the need to safeguard very large and diversified amounts of cryptocurrencies while mitigating both IT and physical assault threats. This enterprise-grade solution’s security is based on "HSM" (Hardware Security Module) and hardware authenticators. It is a turnkey SaaS hardware/software suite enabling handling multiple cryptocurrencies through advanced governance rules such as multi-authorization, rate-limiting, and time-locking. We are looking for talents to build a solid and scalable platform for BtoB financial market. **Your mission**: - Design and develop our governance and orchestration layer; and a set of complex APIs - Communicate with cryptographic modules (HSM), and blockchain interfaces - Integrate new cryptocurrencies on Vault - Work closely with the Product team to define and understand end-user requirements, and translate them into pragmatic technical solutions - Work in cross-team environment: You will be in direct contact with Vault’s Frontend and QA engineers, but also with cross-functional teams such as Core, Firmware, Infrastructure, and Operations - Participate in firefighting sessions, and interface with stakeholders like Technical Account Managers **What we’re looking for**: - 5+ years of experience in Backend / Software Engineering role, preferably in a product-based startup environment - 3+ years of experience in Python as the primary language (Flask or Django) - Capable of self-training on backend languages like Scala / C++ / NodeJS - Familiarity with software development best practices - version-control, code-reviews, testing, CI/CD - Work in an agile environment (Scrum/XP/Kanban) - Work in a multicultural environment - English is a MUST **Bonus points**: - You have a sound knowledge of RESTful API design, standards and best practices - You have an interest in other API frameworks (e.g. GraphQL), and dabble in message based systems - You are keen to step outside your area of expertise, and contribute to all parts of a product - You have an interest in cryptocurrencies, and blockchain technology - You are active in the open-source community, speak at conferences, attend meetups, write blogs, contribute code, etc. **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._