Senior Infrastructure Administrator

Company Description

⚡️💡 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'll 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.

Job Description

🚀 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

🛠 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

✔️ Desired Skills

✔️ 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

Be part of Assystem’s digital transformation, enabling secure and scalable systems that support critical UK energy missions. Your work will have real impact across low-carbon infrastructure projects shaping a sustainable future.

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

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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