Senior Software Engineer

Home > C/C++ programming jobs

Senior Software Engineer in UK

PQShield
Full time
Email

UK
09/15/2026
Report

Remote

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.

Salary: Competitive

PQShield

PQShield builds post-quantum cryptography for chips, applications, and cloud services, selling licensed IP cores, software libraries/SDKs, and advisory support to chipmakers, device OEMs, and security teams. Founded in 2018 and headquartered in Oxford, it contributes to NIST’s post-quantum standa...

Similar positions

Embedded Development Engineer

Emerson Electric Co.
Full time

Others
10/04/2026

Pune, India

Intermediate Embedded Software Engineer

MITRE
Full time

USA
10/04/2026
Salary: $104k - $155k/yr

New Bedford, MA

Senior Embedded Software Engineer

Apex Technology, Inc.
Full time

USA
10/04/2026
Salary: $185k - $210k/yr

Los Angeles, CA

Bluetooth Development Engineer

Visteon Corporation
Full time

Others
10/04/2026

Chennai, India

Software Engineer II

Microsoft
Full time

USA
10/04/2026
Salary: $102k - $219k/yr

Redmond, WA