SII Group delivers Digital Services, IT, Engineering, and Consulting to diverse industries, enabling digital transformation through our commitment to Growth, People, and CSR.
With over 16,000 professionals across 21 countries, we’re recognised as a “Great Place to Work” for fostering a high-trust culture. Our core values of Trust, Transparency, and Quality drive our work package delivery, ensuring we meet and exceed client expectations as a committed partner.
Since 2016, SII UK has supported top Aerospace & Defence, Aviation, Transportation, and Finance clients, empowering digital transformation with industry-leading engineering expertise.
Let’s Tech Together is our promise to encourage innovation and teamwork. We support our engineers with development opportunities and a collaborative, inclusive environment where every voice is valued and empowered.
#Let’sTechTogether
THE OPPORTUNITY
We are looking for a Software Engineer to develop secure, high-reliability digital solutions that support aerospace and defence platforms. You will design and deliver cloud, data and AI capabilities that enhance situational awareness, mission planning, system performance and cybersecurity across complex safety‑critical environments. This role combines modern large‑scale software engineering practices with regulated engineering standards used in aerospace and defence programmes.
KEY RESPONSIBILITIES
* Design and implement robust software for mission and information systems
* Develop secure cloud and data processing pipelines for sensor and platform data
* Build machine learning or analytics solutions for detection, prediction and automation
* Support modelling, simulation and visualisation tools used in operational planning
* Apply secure‑by‑design and safety‑critical engineering practices
* Integrate software with hardware, networks and embedded systems
* Produce technical documentation, test evidence and verification artefacts
* Collaborate with systems, hardware, cybersecurity and safety engineering teams
ESSENTIAL SKILLS & EXPERIENCE
* Degree in Computer Science, Software Engineering, Electronic Engineering or related discipline
* Strong programming skills (e.g. Java, Python, C++, C# or Go)
* Understanding of distributed systems or cloud architectures
* Knowledge of software testing and version control (e.g. Git)
* Awareness of cybersecurity principles
* Ability to work within structured engineering processes and regulated environments
DESIRABLE SKILLS
* Experience with AI / data analytics or large datasets
* Knowledge of real‑time, embedded or high‑integrity software
* Familiarity with verification, validation or simulation tools
* Understanding of safety‑critical standards (e.g. DO-178, ISO 26262, or similar)
* Interest in aerospace, defence, communications or security systems
BENEFITS
* Competitive Basic Salary
* 6% Employers Contribution + 6% as a salary sacrifice
* Private Medical Insurance, Life Cover and Income Protection
* 25 days holiday
* 10 days full sick pay per year
* Cycle to Work & TechScheme
* Corporate access to the Udemy platform
* If you're applying for a role requiring security clearance, please be aware that foreign or dual nationality is not an automatic bar, however certain posts may have restrictions which could affect those who do not have sole British nationality or who have personal connections with certain countries outside the UK.
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