Software Engineer

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’re looking for an experienced Software Engineer to join our team in Fareham a distributed engineering team working on high‑performance, real‑time systems . This role is ideal for someone who enjoys building robust backend software, working close to hardware and sensors, and creating intuitive user interfaces for complex systems.

You’ll be involved across the full software lifecycle, contributing to both core system logic and user‑facing applications, with a strong focus on performance, reliability, and quality.

Responsibilities

Location: Fareham; On Site: Regular Access to the site; Clearance: Candidates should be willing and eligible to obtain at least BPSS clearance.; Experience Level: 5+ years of relevant experience.; Design, develop, and maintain backend software components using modern C++; Build and implement algorithms that combine and process data from multiple sensors; Develop and optimise real‑time image and data processing pipelines; Create and integrate user interfaces using Qt and QML , connected to C++ backends; Ensure high software quality through code reviews, testing, debugging, and performance tuning; Collaborate closely with systems, embedded, and UI/UX engineers; Contribute across the full development lifecycle: requirements, architecture, implementation, and documentation

Requirements

Strong commercial experience with C++; Hands‑on experience with Qt / QML; Background in real‑time, embedded, or performance‑critical systems; Ability to work on complex systems that integrate software, hardware, and data; Comfortable working remotely as part of a collaborative engineering team; Experiance within Defence or Maritime industries; A Bachelor’s or Master’s degree in Engineering , or equivalent military experience .

Nice to have

Experience working with sensor data such as cameras, radar, LiDAR, or similar inputs; Background in image processing , computer vision, or perception systems; Exposure to embedded Linux or low‑level system integration; Understanding of performance optimisation and multi‑threaded applications; Experience working in regulated, safety‑critical, or high‑reliability environments

Benefits

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)