Senior Infrastructure Engineer

Join a brand-new team shaping the future of Defence and Space.

We’re embarking on a transformative integration project that will redefine infrastructure across the Aerospace and Defence sector. This is not just another engineering role – it’s an opportunity to be part of a high-profile programme with strategic importance and long-term impact.

You’ll play a key role in building a new, fully functional domain from the ground up, ensuring secure, scalable, and compliant Identity and Access Management (IAM) solutions. Working within a large, collaborative infrastructure team spread across multiple client sites, you’ll tackle complex challenges, implement cutting-edge technologies, and contribute to a project that underpins mission-critical operations.

You will be office-based at one of our sites in Stevenage, Portsmouth, or Newport, with some flexibility to work from home.

We can offer great career progression opportunities, ability to be based anywhere across the UK, benefits which you can flex to meet your needs and training and development opportunities.

What you'll be doing:

  • Implement IAM Design - Deliver a pre-approved IAM architecture that meets security, scalability, and compliance standards for Defence and Space.
  • Build and Configure Domains-Create a new domain from scratch, including directory services, trust relationships, group policies, and secure authentication.
  • Integrate Systems-Ensure IAM components work seamlessly with existing infrastructure and third-party systems.
  • Apply Security & Compliance - Enforce Defence-grade security controls aligned with regulatory frameworks.
  • Automate & Harden Infrastructure-Develop scripts and workflows for provisioning and monitoring IAM services; strengthen systems against vulnerabilities.
  • Collaborate with Stakeholders-Work with internal teams, vendors, and client stakeholders to ensure smooth delivery and clear communication.
  • Document & Transfer Knowledge -Produce technical documentation and handover materials for long-term maintenance.
  • Troubleshoot & Optimise -Resolve infrastructure issues, improve performance, and monitor IAM services for resilience before launch.

What you’ll bring:

  • Proven experience as an IAM/IDAM Engineer
  • Strong knowledge of Microsoft Active Directory (Enterprise/Multi-Forest), Group Policy (GPO), and DNS
  • Expertise with Microsoft Exchange (2010/2016), including Exchange CUs and monitoring
  • Understanding of FIM/MIM and Single Sign-On/PKI
  • Experience with Mail AV/SPAM solutions (e.g., Trend IMSVA)
  • Proficiency in PowerShell scripting and reporting
  • Hands-on experience with Windows Server OS (2012–2025) and VMware/virtualised environments
  • Knowledge of Enterprise Vault and Domain Controller installations/migrations

It would be great if you had:

  • MECM (SCCM) and related configuration tools
  • Email security and routing (Postfix/Sendmail, Cisco IronPorts)
  • Microsoft Certifications (MCP, MCITP, MCSE, MCSA, MCTS)
  • Federation technologies (PingFederate)
  • ITIL qualification

If you are interested in this role but not sure if your skills and experience are exactly what we’re looking for, please do apply, we’d love to hear from you!

 Employment Type: Full-time, Permanent

Location: Stevenage, Portsmouth & Newport

Security Clearance Level: Must be eligible for SC

Internal Recruiter: Carolyne

Salary: £60K

Benefits: 25 days annual leave with the choice to buy additional days, health cash plan, life assurance, pension, and generous flexible benefits fund

Although this role is advertised as full-time, we believe that flexibility at work can promote work/life balance, increase your motivation, reduce stress and improves performance and productivity. We support different ways of working and can offer a range of flexible working arrangements. So, if you’re interested and need to work flexibly, we encourage you to apply and talk to us about what might be possible.

Loved reading about this job and want to know more about us?

 Sopra Steria’s Aerospace, Defence and Security business designs, develops and deploys digital solutions to Central Government clients. The work we do makes a real difference to the client’s goal of National Security, and we operate in a unique and privileged environment. We are given time for professional development activities, and we coach and mentor our colleagues, sharing knowledge and learning from each other. We foster a culture in which employees feel valued and supported and have pride in their work for the customer, delivering outstanding rates of customer satisfaction in the UK’s most complex safety- and security-critical markets.

We embrace difference as a source of creativity, innovation and competitive advantage and are striving to become a more diverse organisation. We welcome applications from people with a diverse variety of backgrounds and identities. We are committed to equality of opportunity for all and do not discriminate on the basis of race, religion, colour, gender, age, disability, sexual orientation or marital status. We have partnered with Vercida, the UK's largest diversity and inclusion focused careers site, where all our vacancies are available in an accessible format.
If you require any adjustments to the recruitment process, to enable you to perform to the best of your ability, please let us know when completing your application. We participate in the Disability Confident scheme and are committed to offering an interview to any candidate with a disability, who meets the minimum criteria for the role. If you believe this could apply to you, please let us know when completing your application.
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Job Details

Company
Sopra Steria
Location
Stevenage, Hertfordshire, UK
Hybrid / Remote Options
Posted