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# Senior Embedded Software Engineer

- **Company:** Leidos, Inc.
- **Location:** Cheltenham, UK
- **Experience:** Expert
- **Salary:** £55,900.0
- **Contract:** Permanent contract
- **Skills:** ARM Architecture, Bluetooth, C++ (Programming Language), Profiling, Software Debugging, Linux, Device Drivers, Embedded Software, Joint Test Action (IEEE Standards), Python (Programming Language), Raspberry Pi, Real-Time Operating Systems, Toolchain, Universal Asynchronous Receiver/Transmitter, Wi-Fi Technology, Git Flow, Bare Metal
- **Published:** September 2, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5809346459

## About the Role

* Extensive hands-on embedded software development experience.

 * Strong proficiency in C/C++ (and/or Python where appropriate).

 * Deep experience with embedded systems (ESP32, ARM Cortex, SBCs).

 * Strong understanding of low-level interfacing (UART, GPIO, USB, SPI/I2C).

 * Confident in Linux-based development environments and toolchains.

 * Strong debugging skills (JTAG/SWD, logic analysers, profiling, etc.) and disciplined engineering practice.

 * Ability to communicate clearly and influence technical decisions across teams.

Desirable:

 * Experience delivering in secure/defence environments.

 * Knowledge of cryptography, secure transport, or secure system design.

 * Wireless experience (Bluetooth, UWB, Wi-Fi).

 * USB device drivers / advanced USB comms.

 * RTOS / bare-metal expertise.

 * Embedded Rust experience or strong interest.

Education & Qualifications

 * Degree in a relevant discipline preferred (or equivalent experience).

 * Professional membership (BCS, IET) is a plus.

## Description

Location: Commutable to Herfordshire, Cheltenham, and Bristol - mostly on-site (4 days/week on customer site, 1 day remote where appropriate)

Clearance: Must be eligible and willing to undergo DV clearance (British Citizen, UK residency last 10 years)

Are you a proven embedded software engineer who thrives on hard problems and real-world constraints? Want to design and deliver operational tooling directly alongside end users in National Security & Defence?

We're looking for a senior technical contributor who can take ownership of embedded deliveries, guide technical direction, and mentor others-working across ESP32, Raspberry Pi, and ARM platforms.

What You'll Do

 * Lead development of bespoke embedded solutions across multiple platforms.

 * Design, implement, and maintain production-quality C, C++ and/or Python code interfacing with hardware.

 * Architect solutions involving comms protocols, peripheral integration, and performance/robustness constraints.

 * Lead debugging, testing, and optimisation across lab and field environments.

 * Shape requirements with stakeholders; propose approaches and influence delivery plans.

 * Support integration, configuration, and deployment into secure operational environments.

 * Produce high-quality documentation and enforce consistent Git workflows and review standards.

 * Mentor junior engineers and raise team capability through coaching and knowledge sharing.