Firmware Applications Engineer (f/m)

As a Firmware Applications Engineer at Ledger, you'll be tasked with implementing and maintaining secure applications for our hardware wallet's operating system. Your role will involve enhancing our application development framework, ensuring application quality through testing and documentation, and releasing new applications to the Ledger Live platform. Additionally, you'll provide valuable support to third-party developers, ensuring their applications work seamlessly with our technology.

To be considered for the Firmware Applications Engineer position at Ledger, candidates should possess a diploma in Computer Sciences or Engineering and demonstrate strong experience in Embedded C software development. Familiarity with Python and a general knowledge of cryptography are also essential. Bonus experience in blockchain or Rust development can be advantageous, showcasing your commitment to the field.

At Ledger, the Firmware Applications Engineer is expected to develop and improve the application development framework specific to our hardware wallets. This entails using robust methodologies and tools to ensure quality assurance, efficient testing processes, and upholding development guidelines that propel secure applications to the Ledger Live platform.

Collaboration within the firmware team at Ledger is essential, as you'll engage with the OS team for SDK developments, the security team to analyze and rectify software vulnerabilities, the product team for prioritizing requirements, and the customer success team to address end-user issues. This cross-functional teamwork enriches our application development process and fosters creative solutions.

Ledger offers a comprehensive package of benefits for its Firmware Applications Engineers, including equity in company stock, a hybrid work policy, extensive medical insurance, annual company outings, personal development opportunities, five weeks of paid leave, and discounts on Ledger products. These perks highlight our commitment to employee well-being and professional growth.

When answering this question, highlight specific projects you’ve worked on that required Embedded C. Discuss the challenges you faced, how you overcame them, and the outcomes of your work. It’s important to demonstrate your technical expertise and your ability to apply it in real-world situations.

In your response, provide a brief overview of Ledger’s hardware wallets, emphasizing their security features and the underlying technology. Mention the role of your prospective position in maintaining and improving these systems, showcasing your understanding of Ledger’s mission and products.

Discuss the specific testing methodologies you use, such as unit testing, integration testing, or continuous integration practices. Highlight your attention to detail and your proactive approach to identifying and resolving issues before they reach the end user.

Share an example that illustrates your collaboration skills, focusing on the situations you faced, the role you played, and how you successfully navigated any challenges. Emphasize the importance of communication and teamwork in achieving project goals.

Outline your understanding of secure coding practices, discuss common vulnerabilities to be aware of, such as buffer overflows or injection attacks, and illustrate how you implement security measures within your application development lifecycle.

Express your personal interests in blockchain and why you’re excited about the technology. Discuss how it relates to your work as a Firmware Applications Engineer and how you hope to contribute to advancing the field.

Talk about your approach to time management, including the tools or methods you use for task prioritization. Emphasize your ability to meet deadlines and adapt to changes in project scope as necessary.

Provide examples that demonstrate your experience in troubleshooting issues, providing documentation, and facilitating communication. Show how your supportive approach has contributed to positive developer experiences and outcomes.

Highlight the types of documentation that you consider most important, such as technical specifications, API documentation, and user guides. Explain how thorough documentation contributes to the success of the development process and the usability of the applications.

Discuss the methods you utilize to stay updated, such as participating in online communities, attending industry conferences, or engaging with relevant publications. This shows your commitment to continuous learning and improvement in your field.