Job Description

Company Description

ALTEN

is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, IT and many more to deliver innovative engineering solutions that drive technological advancement & 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.


Join us and start building tomorrow's world today!

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:

4-5 Days per week

Seniority:

Senior (7+ 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

Engineering,

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 bring together entrepreneurial, tech-driven people to deliver innovative solutions for leading companies.


At ALTEN, you'll work on exciting projects, supported by ongoing learning, mentoring, and clear career development tailored to your goals.


Join a passionate team and help build tomorrow, today.

In short you get:

A personalised career path and a rewarding management style A huge diversity of engineering projects and industries Private Medical Insurance Cycle & Tech Scheme Employee assistance programme Life insurance & Pension Scheme Social atmosphere, regular gatherings & team buildings Flexible way of working (role dependent)
This role may 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 Gov.UK. 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.

We are proud to support the Armed Forces Covenant & actively encourage applications from members of the Armed Forces community, including veterans, reservists, service leavers, and military spouses/partners. We recognise the value of military skills and experience and are committed to ensuring that no applicant is unfairly disadvantaged during our recruitment and selection processes.