Senior Signal Processing Engineer

Company Description

Are you passionate about engineering? Do you want to make a difference?  

ALTEN is a global engineering and technology consultancy operating across over 30 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, and many more to deliver innovative engineering solutions that drive technological advancement and support sustainable transformation. Our teams of passionate and agile engineers work on cutting-edge projects that shape the future of technology and sustainability. At ALTEN, we empower talented engineers to innovate, solve complex challenges, and deliver impactful solutions that build tomorrow’s world—today.

Job Description

Join our team to play a pivotal role in developing cutting-edge underwater defence systems that rely on advanced signal processing and mathematical modelling. You’ll help translate theoretical models into high-performance, safety-critical software deployed in real-world maritime environments. This is a hands-on opportunity to work on some of the UK’s most innovative defence software projects, where your C++ expertise and algorithmic thinking will make a direct impact.

Location: Stockport (Manchester)
On-site: Monday – Friday
Seniority: Senior (8+ years’ experience)
Clearance: SC clearable (no caveats)

Key Responsibilities

Develop and integrate complex signal processing models into reliable, high-performance C++ software solutions.
Translate mathematical and algorithmic models into efficient, production-quality code.
Contribute to model-driven engineering, combining both autogenerated and manually written code.
Validate algorithms through MATLAB/Simulink simulation.
Design and maintain robust software architectures using UML modelling tools (e.g. IBM Rhapsody).
Apply best practices in static analysis, clean coding, and version control to ensure maintainable, safety-critical software.
Support continuous improvement across build pipelines, testing, and software assurance activities.

Qualifications

Required Skills

Strong proficiency in C++, with proven experience in complex, real-time or safety-critical environments.
Solid grounding in mathematics and signal processing, with practical implementation experience.
Hands-on knowledge of Linux development, including scripting and system configuration.
Experience with model-driven development and integration of both generated and hand-written code.
Strong understanding of software build pipelines, configuration management (e.g. Git, Jira), and containerisation (e.g. Docker).
Familiarity with software testing, including unit testing, integration, and code validation.
Understanding of software safety compliance, documentation standards, and continuous integration practices.Soft Skills & Collaboration

Excellent teamwork and communication across multi-disciplinary environments.
Strong leadership presence – mentoring peers and influencing technical direction.
Proactive and adaptable mindset, with a commitment to quality and safety-critical delivery.Required Qualifications:

A Bachelor’s or Master’s degree in Software Engineering, Computer Science, or Signal Processing, or a related discipline OR a relevant technical military background with equivalent hands-on engineering experience.
Must be eligible for or already hold UK Security Clearance (SC) Desirable Skills

Familiarity with defence domain projects and compliance standards.
Experience with CI/CD, DevOps, or software assurance in secure environments.
Knowledge of cybersecurity concepts, virtualisation, or infrastructure as code.
Exposure to requirements management tools and automated testing frameworks.
Continuous improvement mindset, with an interest in emerging technologies and process innovation.

Additional Information

Why join us? 

We foster a community of dually talented individuals who are both entrepreneurs and technology specialists. Our teams embody the spirit of innovation and entrepreneurship, enabling us to develop solutions most efficiently. 

Our commitment to sustainable growth is unwavering, and we continuously strive for accelerated transformation and continuous improvement. Through ALTEN labs, mentoring programs, internal universities, and more, we are always pushing boundaries and embracing new possibilities. 

We offer incredible opportunities to join inspiring projects in the most innovative companies. 

We prioritise your career development with personalised support plans tailored to your own aspirations. We're here to empower you and help you reach your full potential. 

Join our passionate team and start building tomorrow, today! 

In short you get: 

A personalised career path and a rewarding management style 
A chance to work on the most exciting engineering projects and technologies along with Premium Customers
A huge diversity of engineering projects and industries
A competitive salary
Private Medical Insurance
Pension Scheme
Cycle-to-work Scheme among many additional benefits
Social atmosphere, regular gatherings, and team buildings
Flexible way of working (role dependent)This role will require you to have or be willing to go through Security Clearance. As part of the onboarding process candidates will be asked to complete a Baseline Personnel Security Standard; details of the evidence required to apply may be found on the government website (url removed). If you are unable to meet this and any associated criteria, then your employment may be delayed, or rejected. Details of this will be discussed with you at interview