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# Senior/Principal Software Engineer

- **Company:** BAE Critical Skills
- **Location:** Rochester, UK
- **Experience:** Expert
- **Salary:** £59,567.0
- **Contract:** Permanent contract
- **Skills:** C++ (Programming Language), Embedded Software, Human-Computer Interaction, Software Architecture, Rhapsody, Software Engineering, Verification and Validation (Software), UML, Model-Driven Development, Safety Critical Systems, Modeling and Simulation, DO-178B
- **Published:** August 11, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5835931575

## About the Role

* You will have a degree or equivalent qualification in a Scientific/Engineering (electronics-engineering, software-engineering, physics, math's) environment
 * You will have excellent Software Engineering skills, with significant experience in C/C++
 * You will have extensive experience of Software Architecture Design using UML or other recognised model-based design techniques as well as experience in UML for software design in CAMEO, EA, Rhapsody or integrity Modeler
 * You will have extensive experience of interfacing software with hardware in a real-time environment and development experience to DO-178B/C Standards

## Description

As a Principal Software Engineer, you will lead the design and delivery of embedded software for complex, safety critical systems. You will develop drivers, protocols and human-machine interfaces. Responsible for technical direction and ensuring robust, certifiable solutions. Working across the full lifecycle, you will define architectures and solve complex engineering challenges through integration, verification and validation. You will provide technical leadership, mentor engineers and influence best practice. Engaging with customers and stakeholders, you will shape strategy, drive innovation and play a key role in delivering high-impact solutions.

Core Duties:

 * Lead design and development of embedded software, including drivers, protocols, human-machine interfaces with certification artefacts
 * Define system and software architectures from requirements using structured design, modelling and simulation
 * Drive integration, verification and validation within a safety critical environment
 * Provide technical leadership through mentoring, peer reviews and best practice
 * Deliver reliable estimates, including sizing and reuse
 * Engage with customers to resolve technical challenges and shape solutions
 * Contribute to engineering processes, design reviews and strategic decisions, ensuring high quality, compliant delivery


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