Defence IT Solution Architect - Secure, Scalable Systems

Amentum; Gloucester; On-site; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Free medical cover

Digital GP services

Enhanced family-friendly policies

Employee assistance programmes

Professional development reimbursement

Matched-funding schemes

Paid volunteering

Charitable contributions

Job summary

Amentum is seeking an experienced IT Architect to join our defence-focused ICT infrastructure design team in the UK. The role acts as a bridge between business needs and technical solutions, ensuring architectures support critical national infrastructure and client operations.

You will define architecture blueprints, translate them into tangible IT systems, and oversee performance, security and compliance across the full lifecycle.

Qualifications

• At least 5 years designing and delivering complex IT systems, ideally within Defence or high-assurance environments.
• Experience owning solution architecture across the full systems engineering lifecycle.
• Experience with UK MOD customers or similar organisations.

Responsibilities

• Define IT architecture and blueprints aligned with business strategy.
• Design and develop IT systems including software, networks, and data management.
• Monitor system performance and ensure security, compliance, and scalability.
• Communicate technical concepts to stakeholders.

Skills

IT architecture

Stakeholder communication

Technical documentation

Team leadership

Tools

TOGAF

UAF

UML

SysML

Sparx EA

Job description

Amentum is seeking an experienced IT Architect to join our defence-focused ICT infrastructure design team in the UK. The role acts as a bridge between business needs and technical solutions, ensuring architectures support critical national infrastructure and client operations.

You will define architecture blueprints, translate them into tangible IT systems, and oversee performance, security and compliance across the full lifecycle.