Microsoft System Administrator
🚀 Senior Microsoft 365 Administrator
📍 Hoddesdon, UK | 🏢 Hybrid (onsite & remote) + occasional UK travel
We’re recruiting a Senior Microsoft 365 Administrator to take ownership of the administration, optimisation, and security of a complex Microsoft 365 environment within a highly regulated, global organisation operating to ITIL / ISO standards.
This is a hands‐on, senior technical role with real influence — ideal for someone who enjoys leading initiatives, acting as a technical authority, and mentoring others while driving continuous improvement.
🔹 The Role
You’ll be responsible for the end‐to‐end management of Microsoft 365 services, ensuring stability, performance, security, and alignment with organisational goals. Acting as a subject matter expert, you’ll lead migrations, enhancements, and optimisations, while supporting complex escalations and guiding junior team members.
The role involves a mix of strategic ownership and hands‐on delivery, with collaboration across IT and business teams.
🔹 Key Responsibilities
- Lead administration, management, and optimisation of Microsoft 365 services
- Own and deliver migrations, updates, and platform improvements
- Use PowerShell scripting and automation to drive efficiency and best practice
- Act as SME for complex escalations, troubleshooting and resolving issues
- Develop, document, and maintain processes, procedures, and standards
- Manage patch testing and deployment across end‐user devices
- Monitor and maintain security, compliance, and risk controls
- Mentor and support junior IT team members
- Collaborate cross‐functionally to align M365 initiatives with wider business goals
- Stay current with emerging Microsoft technologies and recommend improvements
- Support Microsoft 365‐related projects from design through delivery
🔹 What We’re Looking For
Essential:
- 8+ years’ experience working in a Microsoft enterprise environment
- Strong hands‐on expertise with Microsoft 365, including:
- Intune
- Exchange Online
- SharePoint Online
- Microsoft Teams
- Proven experience leading M365 migrations and optimisations
- Advanced PowerShell scripting and automation skills
- Strong understanding of identity, security, compliance, and modern architectures
- Excellent problem‐solving and troubleshooting capability
- Confident communicator, able to explain technical concepts clearly
- Experience mentoring or leading other technical team members
Desirable:
- Microsoft certifications (e.g. Enterprise Administrator Expert, Modern Desktop Administrator)
- Experience working in regulated or ISO‐aligned environments
🔹 Why Apply?
- Senior, influential role with real ownership
- Technically complex Microsoft 365 estate
- Collaborative, professional IT environment
- Opportunity to shape standards, processes, and future direction
- Mix of strategic work and hands‐on technical delivery
📩 Interested?
Apply directly via LinkedIn or reach out for a confidential discussion.
Planet Pharma is an equals opportunities Recruitment Business and Agency. We welcome applications from all suitably qualified candidates regardless of their race, sex, disability, religion/belief, sexual orientation, or age.