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Principal Software Engineer @ Jonathan Lee Recruitment Ltd

Green Street, Woolley GreenOnsiteFull-time
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About this role

Salary: £70,000 - 75,000 per year

Requirements: We require a degree in engineering, mathematics, or a science-based subject, or equivalent experience.We require significant experience in embedded product development, including bare-metal systems and RTOSes such as Linux or ThreadX.We require expertise in C and C++, with a strong grasp of object-oriented design and design patterns.We require familiarity with software testing, defensive coding standards, version control, and automated testing tools.We require a proactive approach to problem-solving and a commitment to delivering high-quality solutions.Candidates must be eligible for UK security clearance.We require experience working in highly regulated environments and handling sensitive information. Responsibilities: We architect, design, develop, and test embedded and application software, ensuring high-quality and timely deliverables.We apply object-oriented design techniques to enable efficient code reuse and integration with testing frameworks.We review system design artefacts to derive software requirements and architecture aligned with high-level system objectives.We develop and maintain knowledge of best practices in software development, including TDD/BDD, DevSecOps, and secure coding standards.We mentor junior engineers, provide technical leadership, and contribute to the improvement of tools, processes, and techniques.We generate technical proposals and accurate estimates for bids and projects, ensuring cost and schedule adherence.We lead the design, architecture, and delivery of secure embedded and application software across the full software lifecycle.We support bids, cost estimation, and technical reviews.We contribute to multiple concurrent projects with varying scales and complexity. Technologies: ArchitectDevSecOpsEmbeddedSupportLinuxSecurityTDDC++ More:

We are a defence technology company delivering innovative cryptographic and key management solutions that ensure secure communication for customers worldwide. This is a senior Principal Software Engineer role in a dynamic and collaborative environment, based full-time onsite in Maidenhead. We offer excellent benefits including private medical cover, flexible working hours, and participation in an annual bonus scheme. You will play a vital role in shaping advanced defence systems that protect lives and redefine security, combining hands-on development with technical leadership and strategic input.

last updated 30 week of 2026

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