C++ Algorithms Engineer
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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!
Engage in the development of next-generation sonar systems and autonomous undersea vehicles, with ALTEN Ltd! Join our team to develop and integrate advanced mathematical models and signal processing algorithms into operational defence software systems to enhance detection, classification, and imaging capabilities. You’ll work on translating complex theoretical models into efficient, production-ready code that underpins high-performance, safety-critical applications. Your work will contribute to the evolution of autonomous mine countermeasure systems, leveraging AI-driven mission management to improve maritime security
Location: Manchester (Stockport)
On-site: 4-5 Days per week
Seniority: Senior (8+ years’ experience)
Clearance: Candidates must be willing and eligible to obtain SC clearance.
Key Responsibilities
- Implement, integrate, and optimise complex mathematical and signal processing models into production software.
- Apply model-driven development, combining both autogenerated and hand-written code.
- Ensure high code quality through adherence to clean coding principles, static analysis, and best practices.
- Collaborate with teams on model simulation, validation, and verification, using MATLAB/Simulink or similar tools.
- Maintain comprehensive software documentation deliverables and reporting.
- Support unit and wider software testing to ensure reliability and performance.
- Contribute to the ongoing improvement of software architectures and toolchains.
Required Skills
- Strong proficiency in C++ development.
- Experience with software architectures and system software design.
- Expertise in mathematics & signal processing, and model implementation capabilities.
- Familiarity with Linux targets and development infrastructure.
- Knowledge of software development processes, configuration management (SCM, Jira), and unit testing.
- Understanding of container deployment, networking, and GPU integration where relevant.
Soft Skills & Collaboration
- Excellent teamwork, working effectively across multi-disciplinary engineering teams.
- Strong communication skills to clearly articulate technical ideas and progress.
- Demonstrated leadership, mentoring, and ability to influence software quality improvements.
- Positive attitudes and behaviours, proactive and adaptable in complex environments.
Required Qualifications
- A Bachelor’s or Master’s degree in Software Engineering, Computer Science, or a related discipline or relevant technical military background with equivalent hands-on experience.
- Must be eligible for or already hold UK Security Clearance (SC)
Desirable Skills
- Familiarity with Linux scripting, Windows targets, and software build pipelines.
- Exposure to software QA, safety compliance, and assurance practices.
- Knowledge of Defence sector processes and tooling.
- Awareness of CI/CD, containerisation, virtualisation, and emerging development methodologies.
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)
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.
ALTEN is committed to fostering a diverse and inclusive workplace and values the strength that comes from a global mix of backgrounds and perspectives. We welcome applications from all suitably qualified candidates, regardless of background or protected characteristics under the Equality Act 2010. If you require any reasonable adjustments during the recruitment process, please let us know.
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.