Embedded Software Engineer

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!

Job Description

Work on cutting‑edge embedded software systems supporting advanced avionics and land‑based defence platforms. Join ALTEN Ltd as an Embedded Software Engineer, where you’ll develop robust, real‑time software that underpins mission‑critical systems operating in highly challenging environments.

You’ll be hands‑on across the full embedded software lifecycle, working on low‑level development, hardware integration, and performance‑critical applications — contributing to systems that demand precision, reliability and safety.

Location:

Hastings
On‑site:
Hybrid (3 days per week)
Seniority:
Mid–Senior (5+ years experience)
Security Clearance:
Candidates must be willing and eligible to obtain SC clearance.

Key Responsibilities

Design, develop and maintain embedded software using C/C++ within real‑time environments
Develop software for avionics and land defence systems, interfacing closely with hardware
Work across the full lifecycle from requirements and architecture through to integration, testing and deployment
Support hardware/software integration, debugging and system bring‑up activities
Develop and optimise code for performance‑critical and resource‑constrained environments
Contribute to verification and validation activities, including unit and integration testing
Collaborate with systems, electronics and hardware engineers to ensure seamless system performance
Participate in code reviews, technical discussions and continuous improvement activities

Qualifications

Required Skills

5+ years’ experience in embedded software development
Strong programming experience in C/C++ within real‑time or embedded systems
Experience working close to hardware interfaces (drivers, peripherals, communication protocols)
Understanding of embedded systems architecture and constraints
Experience across the software development lifecycle in safety‑critical or regulated environments
Strong debugging and problem‑solving skills in low‑level systems

Soft Skills & Collaboration

Strong communicator within multidisciplinary engineering teams
Proactive and solution‑focused mindset
Ability to work in structured, process‑driven environments (defence / safety‑critical)
Collaborative approach with a focus on quality and delivery

Required Qualifications

Bachelor’s or Master’s degree in Engineering, or relevant technical military background with equivalent experience.

Desirable Skills

Experience with in avionics or defence systems
Knowledge of real‑time operating systems (RTOS) (e.g. VxWorks, FreeRTOS, Embedded Linux)

Experience with communication protocols (e.g. CAN, SPI, I2C, UART, Ethernet)
Exposure to safety‑critical standards (e.g. DO‑178C, MISRA)

Experience with hardware debugging tools (e.g. oscilloscopes, JTAG, logic analysers)
Familiarity with CI/CD pipelines or automated testing frameworks

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)
We…