Software Engineer (.NET)

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!

We are looking for a talented Software Engineer to join our growing team and support the development of innovative software solutions within a technically challenging environment.

You will work on the design, implementation, and continuous improvement of modern applications, collaborating with multidisciplinary teams to deliver high-quality software that meets customer and business requirements. This role offers exposure to a variety of technologies, development practices, and complex engineering projects.

Location: London

Hybrid: 3 days per week on-site

Seniority: Mid-Level to Senior

Key Responsibilities

• Design, develop, and maintain software applications using modern development technologies
• Contribute throughout the software development lifecycle, from concept and design through to deployment and support
• Collaborate with technical teams to deliver robust and scalable software solutions
• Support software testing, integration, and validation activities
• Participate in code reviews and continuous improvement initiatives
• Produce and maintain technical documentation where required
• Assist with troubleshooting, defect resolution, and system optimisation
• Contribute to Agile team activities and sprint delivery

Required Skills

• Commercial experience developing software applications using C# and .NET technologies
• Experience building and supporting enterprise-level or customer-facing applications
• Strong understanding of software engineering best practices and design principles
• Experience working within structured development environments
• Familiarity with source control, build management, and modern development tooling
• Understanding of software testing approaches and quality assurance practices
• Strong analytical and problem-solving skills

Soft Skills & Collaboration

• Excellent communication skills
• Strong stakeholder engagement and teamwork abilities
• Self-motivated with the ability to manage priorities effectively
• Quality-focused approach to software delivery
• Ability to work in fast-paced project environments

Required Qualifications

• Degree in Computer Science, Software Engineering, or a related technical discipline, or equivalent industry experience
• Demonstrable experience delivering software solutions within a professional setting

Desirable Skills

• Experience working within Agile delivery teams
• Exposure to cloud-based development environments and DevOps practices
• Knowledge of modern software architectures and distributed systems
• Familiarity with Microsoft development tools and technologies
• Experience within engineering, technology, or highly regulated industries
• Exposure to additional programming languages and frameworks

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.