Senior Software Engineer

Pqshield · UK, Netherlands, Spain, or Belgium. Some travel to our offices will be required from time-to-timesenior

In short

▸Ingeniero de software criptográfico senior enfocado en implementaciones seguras de cripto clásica y post-cuántica en entornos embebidos.
▸Diseño e integración de primitivas criptográficas en arquitecturas RISC-V y ARM, con enfoque en rendimiento y protección contra ataques físicos.
▸Trabajarás directamente con los fundadores de una deep tech en crecimiento, con productos ya validados y camino claro al mercado.

Proficiency in English is required for collaboration with international teams and document

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What they ask for

✓Título de maestría o doctorado en ciencias de la computación, matemáticas o campo relacionado.
✓Experiencia sólida en C y ensamblador para entornos de recursos limitados y bare-metal.
✓Conocimiento profundo de algoritmos criptográficos clásicos y post-cuánticos, especialmente candidatos NIST PQC.
✓Capacidad para diseñar implementaciones seguras contra ataques de canal lateral (SCA) y de inyección de fallos (FIA).
✓Experiencia en integración con APIs de seguridad como GlobalPlatform, ARM PSA y controladores del kernel Linux.
✓Compromiso con estándares de seguridad como FIPS, ISO/IEC y NIST PQC.

Don't tick every box? That's normal — your free dossier shows your gaps and how to cover them in the interview.

CAssemblyRISC-VARMFPGACryptographic CoprocessorsNIST PQC CandidatesGlobalPlatformARM Platform Security ArchitecLinux Kernel Drivers

Who should you write to at Pqshield?

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💼 About the role We are looking for a Cryptography Software Engineer to join our team to help design and implement the next generation of secure Embedded Software implementations of Classic & Post Quantum Cryptography. We have been established since 2018, so you would be directly working with the founders and inventors of this deep tech startup. The technology is already a couple of years in the making, its feasibility having been established, funding secured, and it has a clear path to market. This is a great opportunity for career progression and to get a head start in a rapidly expanding segment of the semiconductor industry (Post-Quantum Cryptography and RISC-V). Our platform IP components come together as a RISC-V MCU based Sub-system with advanced (post-quantum) cryptography algorithm support and security features. As a Senior Software Engineer at PQShield, you will be designing and developing secure solutions, helping to develop software solutions working seamlessly through the entire software development life cycle. You will assist with the development of PQShield's core software cryptography libraries. Responsibilities include developing internal tools to support the build, test and security analysis of PQShield's software products. ⚒️ What you’ll be doing • Design, implement, and test classical and post-quantum cryptographic primitives with a strong emphasis on functional correctness, interoperability, and optimized performance across software environments. • Develop and integrate cryptographic solutions on hardware platforms, including FPGA and hardware cryptographic coprocessors, with a focus on acceleration and secure implementation on ARM and RISC-V architectures. • Harden cryptographic implementations against side-channel analysis (SCA), fault injection attacks (FIA), and other physical or logical threats through constant-time design and other countermeasures. • Ensuring integration with cryptographic system and application API’s, for example: GlobalPlatform, ARM Platform Security Architecture, Linux Kernel drivers • Collaborate with cryptographers, security engineers, and cross-functional teams—including hardware, verification, and platform security—to review, validate, and harden cryptographic implementations. • Contribute to performance benchmarking and optimization across multiple platforms. • Contribute to design and code review meetings to improve cryptographic software quality, architecture, and development processes. • Perform and support security-focused code reviews, including static and dynamic analysis, and apply formal methods such as model checking where applicable. • Maintain and enhance existing cryptographic software, ensuring robustness, security, and performance across supported platforms. • Support compliance with relevant security standards (e.g., FIPS, ISO/IEC, NIST PQC). • Participate in threat modeling and risk assessments related to cryptographic software. 🎯 Required Skills And Qualifications • 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, with a focus on resource-constrained, bare-metal environments. Experience with Rust is nice to have. • Familiarity with classical and post-quantum cryptographic algorithms, including NIST PQC candidates, and a solid understanding of NIST and FIPS publications and compliance requirements. • Excellent problem-solving and debugging skills. 👍 Preferred Skills And Qualifications • Exper

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