SII OVERVIEW:
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.
#LetsTechTogether
THE OPPORTUNITY
These positions will play a key role in defining architecture strategy, supporting MBSE activities, and ensuring interoperability across complex defence systems and platforms. The successful candidates will work closely with engineering teams, stakeholders, suppliers and programme leadership to support the delivery of secure, scalable and standards-compliant solutions.
There is currently requirement for:
Senior Technology Architect (Lead)
Senior Technology Architect
KEY RESPONSIBILITIES:
* Define and develop architecture solutions across complex defence systems and digital environments
* Support Model Based Systems Engineering (MBSE) activities across the programme lifecycle
* Develop architecture views, models and frameworks using Sparx Enterprise Architect
* Ensure solutions align with programme, customer and interoperability requirements
* Support requirements management and traceability activities using Polarion
* Work closely with systems engineering, integration and programme teams
* Support architecture governance, design reviews and technical decision making
* Contribute to technical strategy, standards compliance and engineering best practice
* Support integration activities across multiple systems and domains
* Liaise with internal stakeholders, suppliers and customer teams within a secure defence environment
ESSENTIAL SKILLS & EXPERIENCE:
* Strong experience within Defence Systems Architecture or Technology Architecture environments
* Experience working within complex defence or military programmes
* Experience with MBSE methodologies and modelling approaches
* Strong experience using:
Sparx Enterprise Architect
SysML
Archimate 3.1
NAF v4
* Experience with requirements management tools such as Polarion
* Strong understanding of systems integration and interoperability
* Experience working within secure or safety-critical environments
* Excellent stakeholder engagement and communication skills
DESIRABLE SKILLS:
* Land Systems or Land Defence programme experience
* Experience with LOSA / MOSA principles
* Experience supporting MOD or NATO-aligned programmes
* Understanding of digital engineering frameworks and enterprise architecture approaches
* Experience working within Agile or hybrid engineering environments
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
* Flexible working
* Cycle to Work & TechScheme
* Continuous professional development
* Corporate access to the Udemy platform
* If youre 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.
http://www.groupe-sii.com/en