Software Engineer - Sonar Systems | C++

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

Dive into advanced underwater detection technology by joining a cutting-edge sonar development team. Whether you're working on Linux-based real-time applications or Windows-deployed software tools, you'll be developing high-performance, robust code that supports mission-critical systems in the field. This is a rare opportunity to contribute to a specialist programme pushing the boundaries of underwater systems.

Location: Manchester or Crawley 4 days per week on site

Clearance: Must hold or be eligible for UK SC Clearance

Experience Level: 8+ years of relevant experience

Key Responsibilities:

• Design, develop and debug high-quality C++ software for Linux or Windows targets
• Support the integration of software into wider sonar platforms and acoustic systems
• Implement and maintain unit testing and support wider test and verification activities
• Collaborate in an Agile environment using tools like JIRA, Bitbucket, and Artifactory
• Feed into project dashboards, risk logs, and contribute to team planning and reporting
• Engage closely with multi-disciplinary teams including systems and test engineers
  
  

Required Skills:

• Proficient in C++ (and Java exposure beneficial)
• Experience developing on either Linux or Windows targets (e.g. Ubuntu, CentOS, Visual Studio)
• Knowledge of signal processing, underwater acoustics, or sonar-related applications
• Familiar with Bitbucket, JIRA, Artifactory, and modern CI/CD pipelines
• Experience working in Agile teams with defined development processes
• Excellent communication, documentation, and team collaboration skills

Required Qualifications:

• A Bachelor’s or Master’s degree in Software Engineering, Computer Science, Electronics, or related discipline
• OR a relevant technical military background with equivalent hands-on engineering experience
• Must be eligible for UK SC Security Clearance (Minimum 5 Years in the UK)

Desirable Skills:

• Strong background in unit testing, debugging, and system integration
• Awareness of automated testing practices and DevOps toolchains
• Familiarity with requirements management tools such as DOORS or Polarion
• Scripting ability in Python, Shell, or Bash
  
  

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)