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# Principal Software Engineer

- **Company:** Jonathan Lee Recruitment
- **Location:** Maidenhead, UK
- **Experience:** Expert
- **Salary:** £70,000.0 - £75,000.0
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Clean Code Principles, Software Applications, Automation of Tests, C++ (Programming Language), Software Design Patterns, Linux, Object-Oriented Software Development, Secure Coding, Software Engineering, Software Requirements Analysis, SC Clearance, Bare Metal, Software Coding, Software Version Control, Devsecops
- **Published:** September 20, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5890525595

## About the Role

* 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.

## Description

* 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:

 * Architect
 * DevSecOps
 * Embedded
 * Support
 * Linux
 * Security
 * TDD
 * C++


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