Senior Infrastructure Engineer

Optoma Europe Limited; Hemel Hempstead; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading provider of projection and digital display products in Hemel Hempstead is seeking a technical authority to join their growing IT team. This role focuses on Microsoft 365 modernization, cloud migrations, and strengthening cybersecurity. The ideal candidate will have extensive experience in Windows Server and Microsoft 365 environments, strong technical leadership, and excellent communication skills. You will drive transformation initiatives while mentoring less-experienced team members, ensuring a secure and scalable infrastructure.

Benefits

Medical insurance

Dental cover

Pension

Up to 30 days holiday

Qualifications

• Proven experience supporting Active Directory, Azure AD/Entra ID and identity security controls.
• Strong ability to work independently and manage multiple complex tasks.
• High attention to detail in documentation and system design.

Responsibilities

• Drive M365 transformation, including SharePoint Online and Teams.
• Oversee patching and disaster recovery.
• Support and evolve hybrid infrastructure.

Skills

Strong technical leadership

Excellent communication skills

Analytical and problem-solving ability

Experience administering Windows Server and Microsoft 365

Knowledge of networking fundamentals

Tools

Microsoft 365

Active Directory

Azure AD/Entra ID

Job description

Optoma Europe Ltd is a leading specialist provider of award-winning projection and digital display products for the business and consumer markets. Optoma was established in 1997 and currently employs around 160 employees across Europe, with the majority of these operating from our headquarters in Hemel Hempstead, UK.

Remuneration

Working for Optoma, you can expect a competitive salary with additional corporate benefits such as medical insurance, dental cover, pension and up to 30 days holiday per year - subject to service requirements.

Job Description

About the role

Join Optoma’s growing IT team as we continue modernising our global infrastructure and strengthening our cloud and Microsoft 365 capabilities. This role is central to our transformation programme—driving M365 modernisation, cloud migrations, operational excellence, and enhanced cybersecurity. As we consolidate systems across regions and establish a secure, scalable foundation for future growth, you will act as a technical authority across servers, cloud platforms, virtualisation, identity services, security technologies, and core enterprise systems.

You will act as a senior technical authority across our hybrid environment, working closely with our outsourced partner and internal teams to ensure systems are reliable, secure, and scalable. As the IT function grows, you will also have the opportunity to mentor others and influence the future shape of the team.

Key Responsibilities

Microsoft 365 Modernisation & Application Transformation

• Drive M365 transformation, including SharePoint Online, OneDrive, Teams, and governance frameworks.
• Deliver migrations from legacy file servers to modern cloud platforms.
• Align M365 services with identity, compliance, and security requirements.
• Integrate M365 storage systems with Entra ID, Conditional Access, and wider cybersecurity controls.
• Drive adoption of modern collaboration tooling and application capabilities across the business.

Escalation, Troubleshooting & Operational Reliability

• Act as senior escalation point for complex issues and major incidents.
• Oversee patching, monitoring, disaster recovery, and capacity management.
• Maintain clear documentation and operational standards.

Infrastructure Engineering & Core Services

• Support and evolve hybrid infrastructure including servers, virtualisation, identity platforms, networking, and storage.
• Lead Active Directory and Entra ID administration, lifecycle management, and identity‑centric security controls.
• Manage enterprise backup, DR, and long‑term platform lifecycle considerations.

Key Skills and Competencies

• Strong technical leadership with the ability to act as an expert escalation point.
• Excellent communication skills, able to engage with stakeholders at all levels.
• Strong analytical and problem‑solving ability with a proactive mindset.
• Ability to work independently, prioritise effectively, and manage multiple complex tasks.
• High attention to detail and rigorous approach to documentation and system design.
• Extensive experience administering Windows Server and Microsoft 365 environments.
• Proven experience supporting Active Directory, Azure AD/Entra ID, Group Policy, and identity security controls.
• Knowledge of networking fundamentals including DNS, DHCP, VPN, firewalls, and site connectivity.
• Experience planning and delivering migrations from on‑premise file servers to SharePoint Online and OneDrive.
• Comfortable working in environments aligned with ISO 27001.
• Experience implementing and maintaining enterprise backup and DR solutions.

Candidate Specification

About You

The ideal candidate will be passionate about infrastructure engineering and motivated to develop deeper expertise in cloud technologies and cybersecurity. They will be confident operating across hybrid environments spanning both on‑premise and cloud‑based systems, with a desire to expand their skills in Azure, Microsoft 365 modernisation, and modern security practices.

They will lead by example while supporting the growth of less‑experienced team members, contributing to a culture of continuous learning and technical excellence. Driven to improve processes, simplify complexity, and strengthen the organisation’s security posture, they will collaborate effectively with internal teams and external partners to deliver modern, scalable, and secure infrastructure solutions.

How to apply

We are an equal opportunities employer committed to promoting diversity and ensuring that all employees and applicants are treated with respect, dignity, and fairness. We welcome applications from all and as such if you require any reasonable adjustments to our recruitment process, please inform us and we will do our best to accommodate your needs.

To apply for this vacancy please email your CV and a covering letter to [e-mail]