Senior Software Engineer

Responsibilities

• Design, implement, and test classical and post-quantum cryptographic primitives for functional correctness, interoperability, and performance.
• Develop and integrate cryptographic solutions with FPGA and hardware cryptographic coprocessors on ARM and RISC-V architectures.
• Harden implementations against side-channel analysis, fault injection, and other physical or logical threats.
• Integrate cryptographic systems with APIs including GlobalPlatform, ARM Platform Security Architecture, and Linux Kernel drivers.
• Develop and maintain cryptographic libraries and internal tools supporting build, testing, and security analysis.
• Conduct performance benchmarking, optimization, code reviews, static and dynamic analysis, formal methods, threat modeling, and risk assessments.
• Support compliance with FIPS, ISO/IEC, and NIST PQC requirements while collaborating with cryptographers, security engineers, hardware, verification, and platform-security teams.

Requirements

• Master’s or PhD degree in computer science, mathematics, or a related field with a strong background in cryptography or computer security.
• Proficiency in C and Assembly for resource-constrained, bare-metal environments.
• Familiarity with classical and post-quantum cryptographic algorithms, NIST PQC candidates, and NIST and FIPS publications.
• Excellent problem-solving and debugging skills.
• Experience with secure coding and countermeasures against implementation attacks is preferred.
• Understanding of timing, power, and electromagnetic side-channel attacks, fault attacks, and mitigation strategies is preferred.
• Working knowledge of FIPS 140-3, SESIP, PSA Certified, or Common Criteria is preferred.
• Ability to read and implement specifications from cryptographic research papers is preferred.
• 2+ years of professional cryptographic software engineering experience is preferred; seniority is assessed primarily through depth of knowledge, hands-on experience, and problem-solving ability.
• Experience with Rust is nice to have.

Benefits

• Flexible hybrid working and a working-from-home budget.
• Private health insurance for the employee and family.
• 25 days of annual leave plus bank holidays and two wellness weeks.
• 50% gym membership discount.
• Competitive salary and share option scheme.
• Learning opportunities and accelerated career development.
• Collaborative team environment and the opportunity to work directly with the founders and inventors.
• The employer is an Equal Employment Opportunity employer committed to an inclusive workplace.