Job Specifications
Offres d'emploi
Les Secteurs
Industrie
Numérique
Santé
Transition écologique
Agriculture
Rejoindre la Mission French Tech
Découvrir les métiers de la Tech
Senior Backend Software Engineer - Blockchain applications
Paris
Full-Time
Apply Now
About
We’re the forever innovators. On a mission that goes beyond business. Securing digital ownership in a changing world. Unlocking true freedom. We’re revolutionaries.
Looking beyond today. Bridging excellence and pragmatism, with ambition and conviction,to push the limits of what’s possible. That’s what you’ll do here, in this playground of innovation. With leadership and trust, you’ll write the rules of new technology, and create products that redefine security in a digital age.
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 UK, US, Switzerland and Singapore, Ledger has a team of more than 500 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.
Job Description
About Ledger
We’re a team of experts pushing the limits of what’s possible, united by our common goal to unlock true freedom through digital ownership, making technology accessible for all. We believe in a world where users, creators and enterprises manage their value with ownership and freedom. Our curiosity drives us to innovate, empowering individuals on a global scale. We believe change is constant and our team moves forward as one, with a culture of problem-solving where every employee is empowered and supported to challenge tradition and create solutions. Our mission is simple: to make self-custody accessible and give people the keys to their own financial futures. If you want to make a true impact, we want you to join us at Ledger.
At Ledger, we’re proud to be the global platform for digital assets and Web3, with over 20% of the world’s crypto assets secured through our Ledger devices. With our headquarters in Paris, and offices in Vierzon, Grenoble, Montpellier, London, Portland, Geneva, Zurich and Central Singapore, we have a team of around 600 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 7.5 millions units already sold in 200 countries.
The Team
The team is building Ledger Enterprise Platform, our 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.
Ledger Enterprise is looking for a Backend Engineer to join the Wallet team. The Wallet domain is responsible for orchestrating interactions with various blockchain-specific components and external APIs. It is mostly composed of an HTTP API (FastAPI) and a resilient workflow orchestration system (Temporal).
What You’ll Be Doing
You will be responsible for developing and scaling a backend application to allow big financial institutions to process their transactions in the cryptocurrency world. …
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 OperationsParticipate in firefighting sessions, and interface with stakeholders like Technical Account Managers
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 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 (FastAPI)
Capable of self-training on backend languages like Scala
About the Company
"French Tech Taiwan" gathers all the individuals from startups, companies, investment firms, incubators, accelerators, public bodies, journalists, innovation stakeholders involved in technology entrepreneurship, and with strong interest in linking France and Taiwan.
Importantly, we promote "La French Tech" and collaboration opportunities between France and Taiwan innovative tech ecosystems.
Know more