C / C++ Software Developper

At CryptoNext Security, we are shaping the future of cybersecurity with innovative post-quantum cryptography solutions. As a leading software vendor, we protect sensitive data for major enterprises and governments, safeguarding them against emerging quantum computing threats.

Collaborating with industry leaders in technology and security, we develop cutting-edge embedded cryptographic products that enable a seamless migration to quantum-safe systems. If you're passionate about pushing the boundaries of technology and contributing to real-world security solutions, CryptoNext is where your expertise will thrive.

• Develop and maintain cryptographic solutions: Design and build cutting-edge products such as Soft HSMs, ensuring optimal performance and security.
• Ensure high performance and reliability: Optimize performance and memory management for resource-constrained environments to guarantee robust and efficient implementations.
• Validate and test cryptographic functionalities: Conduct rigorous testing to ensure compliance with industry standards and verify the security of cryptographic solutions.
• Leverage secure hardware and trusted environments: Develop and test solutions using technologies such as TEE (Trusted Execution Environment), TPM (Trusted Platform Module), and HSMs.
• Collaborate across teams: Work closely with cryptographers and engineers to translate innovative algorithms into practical, secure solutions.

• Proficiency in C/C++: Extensive experience in C and C++ development, with a focus on performance optimization, reliability, and low-level systems programming.
• Strong cryptographic knowledge: Familiarity with cryptographic protocols such as PKCS11 and OpenSSL, including experience integrating custom providers.
• Experience with trusted environments: Hands-on expertise in working with TEE, TPM, HSMs, and other secure hardware platforms.
• Autonomy and initiative: Self-driven and capable of working independently while taking ownership of your tasks.
• Problem-solving mindset: Ability to analyze complex problems and devise efficient, secure solutions.

You'll join a highly skilled and collaborative team focused on delivering reliable cryptographic solutions. As part of our R&D team—the largest department at CryptoNext Security—you'll work alongside PhD researchers and engineers who design, implement, and refine our innovative products. This multidisciplinary team is responsible for creating solutions that address public project requirements and enterprise needs, always striving for excellence.

This is a unique opportunity to design and deliver cutting-edge cryptographic solutions that directly tackle real-world cybersecurity challenges. At CryptoNext Security, you'll find an environment that values innovation, collaboration, and your professional growth.

Here's what we offer:

• A central Paris location near Gare de Lyon with a hybrid work setup (three days in the office per week).
• A competitive salary aligned with your experience.
• The chance to work alongside passionate, talented coworkers—we believe our team is our greatest perk!
• A role where your contributions have a tangible impact on building a quantum-safe digital future.