Python Backend Software Engineer, Ledger

• This opportunity requires a strong security focus, familiarity with hardware integration (including HSMs), and the ability to work across both software and infrastructure layers
• Proficiency in Python 3 with experience in frameworks like FastAPI, coupled with a solid understanding of security principles (cryptography, secure system design)
• Proficient in secure code development and testing using pytest, with knowledge of infrastructure tools like AWS, Kubernetes, and Helm
• Experience with security-focused QA processes, ensuring system resilience
• Strong problem-solving skills and a security-first mindset, with excellent communication and collaboration abilities
• Full professional proficiency in English
• A passion for innovation and secure technology development
• Familiarity with microservice architecture concepts

Desirable

• Join our Ledger Recover team as a talented Senior Software Engineer and play a key role in building and maintaining the infrastructure and backend systems that ensure the secure recovery of digital assets
• You'll be a vital part of a highly collaborative, cross-functional team dedicated to delivering the Ledger Recover product
• The team includes:
• 2 Frontend Engineers focusing on crafting seamless and secure user interfaces
• 2 Backend Engineers ensuring scalable and secure API and infrastructure solutions
• 1 QA Engineer driving quality and resilience across the product
• 1 Product Manager defining the vision and roadmap for Ledger Recover
• 1 Engineering Manager supporting and guiding the team to achieve its goals
• Design, develop, and maintain secure backend services using Python and FastAPI for the Ledger Recover product
• Implement and enhance testing frameworks with pytest to ensure robustness and security of code
• Collaborate with the hardware team to integrate software with HSMs and other security devices
• Build and maintain cloud infrastructure using AWS, Kubernetes, and Helm, ensuring high availability and security compliance
• Enhance the security posture of the Ledger Recover system, including implementing best practices for cryptographic operations
• Support quality assurance processes, identifying vulnerabilities and addressing potential threats
• Optional - Develop and test frontend tools using TypeScript, Next.js, and Playwright to support user interactions

• Competitive compensation package
• Personal development initiatives
• Flexible working hours, remote-friendly environment
• 5 weeks of paid vacation + 10 days of RTT
• High performance office equipment
• Comprehensive health insurance policy
• Meal vouchers with Swile
• Reimbursement for sports and cultural activities
• Annual company outings and regular socials
• Employee discount on Ledger products

Total funding: $583.5m

Ledger has grown into one of the world’s largest hardware wallets for digital assets since its 2014 inception, with well over 6 millions of devices sold across the globe. By offering physical devices to store private keys, customers are able to secure their digital assets offline.