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Python Backend Software Engineer

https://www.ledger.com Logo

Ledger

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Location:
France , Paris

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Category:
IT - Software Development

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Contract Type:
Employment contract

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Salary:

Not provided
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Job Description:

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. This opportunity requires a strong security focus, familiarity with hardware integration (including HSMs), and the ability to work across both software and infrastructure layers. You'll be a vital part of a highly collaborative, cross-functional team dedicated to delivering the Ledger Recover product.

Job Responsibility:

  • 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

Requirements:

  • 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

Nice to have:

  • Understanding of HSMs and their integration into software solutions
  • Familiarity with frontend development (TypeScript, Next.js) and end-to-end testing tools (Playwright)
  • Prior experience in the blockchain or crypto domain
What we offer:
  • 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
  • Transport: Ledger reimburses part of your preferred means of transportation
  • Discounts: Employee discount on all our products

Additional Information:

Job Posted:
March 24, 2025

Employment Type:
Fulltime
Work Type:
Hybrid work
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