At a Glance
- Tasks: Support and manage core IT infrastructure while resolving complex technical issues.
- Company: Join a mission-driven team at Sopra Steria, focused on national security.
- Benefits: Competitive salary, 25 days leave, life assurance, pension, and flexible working options.
- Other info: Dynamic team culture with mentoring and knowledge sharing.
- Why this job: Make a real impact in a secure environment with opportunities for professional growth.
- Qualifications: Experience in infrastructure support and strong troubleshooting skills required.
Are you looking to take the next step in your infrastructure career and play a key role in supporting secure, business‑critical services? You’ll be joining a tight‑knit team working within a highly focused environment, helping to keep core systems stable, resilient and continuously improving. This is an opportunity to work hands‑on with infrastructure, investigate complex issues, and contribute to improvements that meaningfully impact operational performance.
We work onsite in a secure environment in Portsmouth, supporting a programme with growing technical demands. You’ll be surrounded by colleagues who share knowledge, support each other, and take pride in delivering high‑quality work in a mission‑driven setting. Working as part of a 24/7 shift-based support team, you will play a key role in ensuring the effective operation, support, and continuous improvement of business-critical applications.
The role will involve incident, problem, request, and change management, with opportunities to contribute to testing, implementation, and operational process development. For the first six months, your training will take place in Hemel Hempstead, where you will be required to work onsite full time. Following completion of your training, you will transition permanently to Portsmouth, where the role will remain fully onsite.
What you’ll be doing:
- Supporting and managing core IT infrastructure, including networks, servers, storage and operating systems.
- Managing incidents, problems, requests and changes in a structured, ITIL‑aligned environment.
- Investigating and resolving technical issues and contributing to root‑cause analysis.
- Monitoring live services to ensure consistent performance against agreed service levels.
- Contributing to infrastructure improvements, project activity, testing and release support.
- Producing and maintaining clear technical documentation to support day‑to‑day operations.
What you’ll bring:
- Experience in infrastructure support, system administration or a similar technical operations role.
- Strong troubleshooting and analytical skills with the ability to resolve complex issues.
- Awareness of ITIL‑based service management processes.
- Experience supporting technology in structured, process‑driven environments.
- Ability to work independently and collaboratively as part of a wider technical team.
- Eligibility for SC and DV, and willingness to work onsite in a secure environment.
It would be great if you had:
- Experience supporting applications or infrastructure using DevOps or scripted models.
- Exposure to 24/7 operational support environments.
- Strong experience in Infrastructure Management.
- Experience across one or more: Networks (WAN/LAN), Servers & Storage.
- Experience contributing to testing, system checks or release processes.
- Familiarity with producing support documentation and operational guidance.
- An interest in developing towards DV clearance.
If you’re 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: Portsmouth - full time onsite part of a 24/7 shift-based support team
Security Clearance Level: Eligible for SC and DV
Internal Recruiter: Jane
Salary: £45,000 to £65,000
Benefits: 25 days annual leave with the option to buy additional days, life assurance, pension.
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 improve 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 the sector? 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.
Infrastructure Support Analyst in Portsmouth employer: Sopra Steria
At Sopra Steria, we pride ourselves on being an exceptional employer, particularly for those passionate about cybersecurity and detection engineering. Our hybrid work model in Farnborough allows for a balanced work-life dynamic, while our commitment to professional development ensures that employees have ample opportunities to grow and excel in their careers. With a supportive culture that values collaboration and innovation, you'll be part of a team dedicated to making a meaningful impact in the Aerospace, Defence & Security sector.
