Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Manage IT infrastructure, cloud environments, and support digital energy projects.
- Company: Join Assystem, a leading nuclear engineering company driving the global energy transition.
- Benefits: Enjoy hybrid working, 25 days leave, pension scheme, and flexible hours.
- Why this job: Be part of a high-performing team making a real impact on the UK's energy future.
- Qualifications: 5+ years in infrastructure admin, Azure and M365 experience required.
- Other info: Diversity is key; bring your unique perspective to innovate and excel.
The predicted salary is between 43200 - 72000 ÂŁ per year.
Do you have the following skills, experience and drive to succeed in this role? Find out below.
About Assystem: At Assystem, our mission is to accelerate the energy transition worldwide. Our 7,500 Switchers blend engineering excellence with digital innovation to transform the global energy landscape. In the UK, we’re driving low-carbon initiatives across nuclear and renewable energy, transmission networks, and future-forward digital infrastructure.
Why Join the Community of Switchers? Be part of one of the top three largest nuclear engineering companies globally. As a Switcher, you will join missions that redefine how we power our world. Your future team will support vital digital infrastructure, delivering innovation and resilience to energy projects shaping the low-carbon future.
The Job Mission: This role ensures the health and evolution of our IT infrastructure estate. You’ll manage both cloud and locally hosted environments. Your future team will support national infrastructure across key engineering programmes.
- Manage endpoints, servers, mobile devices, and storage infrastructure
- Administer Azure environments, including provisioning and storage configurations
- Support Microsoft 365 tenant setup, licensing and administration
- Deploy virtual machines and configure hypervisors across environments
- Troubleshoot Office 365 and mobile device technical issues
- Assist with cloud-based collaboration tools (PowerBI, GitHub, Azure DevOps)
- Maintain documentation for procedures, changes, and system states
- Monitor system performance and enforce IT compliance standards
Qualifications Required Skills and Qualifications:
Essential Skills:- 5+ years' experience in infrastructure or system administration
- Hands-on experience with Azure and M365 environments
- Able to manage and deploy endpoints, VMs, and cloud services
- Skilled in Microsoft Office and mobile device support
- Strong troubleshooting and infrastructure performance monitoring abilities
- Experience with VM hypervisors and cloud-based provisioning
- Knowledge of collaboration platforms like PowerBI and GitHub
- Ability to document procedures and maintain IT compliance
- Microsoft “Fundamentals” and Azure, Power Platform, or Data accreditations
- Knowledge of VMware systems and templates
- Familiarity with SolarWinds or similar IT tools
- Understanding of Azure DevOps environments
- ITIL Certification or equivalent process framework
Additional Information: Why You Should Apply: Become a pivotal part of Assystem’s digital evolution supporting world-class energy missions. Join a high-performing infrastructure team making a real difference in the UK’s energy transition.
Benefits include:
- Hybrid Working Opportunity
- Pension scheme (8% company contribution / 4% personal contribution)
- 25 days’ paid annual leave + bank holidays + option to buy or sell days
- Professional fees reimbursed
- Flexible working hours
- Employee referral scheme.
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter! Bring your unique contributions and help us shape the future.
Senior Infrastructure Administrator employer: Assystem, Switch On
Contact Detail:
Assystem, Switch On Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Infrastructure Administrator
✨Tip Number 1
Familiarise yourself with the latest trends in cloud infrastructure, particularly Azure and Microsoft 365. This will not only help you understand the technical requirements of the role but also demonstrate your commitment to staying updated in a rapidly evolving field.
✨Tip Number 2
Network with current employees or professionals in similar roles through platforms like LinkedIn. Engaging in conversations about their experiences can provide valuable insights into the company culture and expectations, which can be beneficial during interviews.
✨Tip Number 3
Prepare to discuss specific projects where you've successfully managed cloud environments or resolved complex IT issues. Having concrete examples ready will showcase your hands-on experience and problem-solving skills, making you a more attractive candidate.
✨Tip Number 4
Research Assystem's recent initiatives in low-carbon energy and digital infrastructure. Being knowledgeable about their projects will allow you to tailor your discussions and show genuine interest in contributing to their mission during the interview process.
We think you need these skills to ace Senior Infrastructure Administrator
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your relevant experience in infrastructure and system administration, particularly with Azure and M365 environments. Use specific examples to demonstrate your hands-on skills and achievements.
Craft a Compelling Cover Letter: Write a cover letter that not only outlines your qualifications but also expresses your passion for the energy transition and how you can contribute to Assystem's mission. Mention specific projects or initiatives that resonate with you.
Highlight Relevant Skills: In your application, emphasise your troubleshooting abilities, experience with VM hypervisors, and knowledge of collaboration platforms like PowerBI and GitHub. These are key skills that Assystem is looking for.
Showcase Continuous Learning: If you have any certifications or are pursuing further education related to Microsoft Fundamentals, Azure, or ITIL, be sure to mention these. This shows your commitment to professional development and staying current in the field.
How to prepare for a job interview at Assystem, Switch On
✨Showcase Your Technical Expertise
Make sure to highlight your hands-on experience with Azure and Microsoft 365 during the interview. Be prepared to discuss specific projects where you've managed cloud environments or deployed virtual machines, as this will demonstrate your capability to handle the responsibilities of the role.
✨Prepare for Troubleshooting Scenarios
Expect to be asked about troubleshooting technical issues, especially related to Office 365 and mobile devices. Prepare examples of past challenges you've faced and how you resolved them, as this will showcase your problem-solving skills and technical knowledge.
✨Familiarise Yourself with Collaboration Tools
Since the role involves assisting with cloud-based collaboration tools like PowerBI and GitHub, it’s a good idea to brush up on these platforms. Be ready to discuss how you've used them in previous roles and how they can enhance team productivity.
✨Emphasise Documentation Skills
Documentation is key in IT compliance and procedure maintenance. Be prepared to talk about your experience in maintaining documentation for system states and changes, as well as any tools you’ve used to keep track of these processes.
