O365 Engineer

Proactive Appointments; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading recruitment agency is seeking an experienced O365 Engineer to deliver and maintain enterprise messaging and collaboration services using Microsoft Office 365. Responsibilities include supporting Microsoft Teams, Exchange, and operational stability. The ideal candidate will have extensive technical expertise, especially in Microsoft messaging technologies and a proven ability to resolve complex issues in a global context. This role is onsite and aligns with inside IR35 regulations.

Qualifications

• Subject Matter Expert in Microsoft messaging technologies.
• Expert-level knowledge of Microsoft Teams including video and voice.
• Proven experience in design, migration, integration, and implementation of O365 technologies.

Responsibilities

• Deliver and support Microsoft Teams video and voice services.
• Maintain, patch, and support Exchange and O365 infrastructure.
• Provide 2nd and 3rd line support for messaging and Microsoft Teams telephony services.

Skills

Microsoft messaging technologies expertise

Microsoft Teams video and voice

e-Discovery and compliance tools

PowerShell Scripting

Education

Degree-level qualification or relevant technical certification

Tools

Microsoft Intune/MDM

Active Directory

Job description

O365 Engineer

Inside IR35 - Onsite working

We are seeking an experienced O365 Engineer to support and deliver a large-scale programme of modernisation, integration, and consolidation of enterprise messaging, collaboration, and e-Discovery platforms using Microsoft Office 365 technologies.

This role will act as a subject matter expert, providing specialist engineering support across O365 services, with a strong focus on Microsoft Teams (video and voice), Exchange, compliance tooling, and platform stability in a global enterprise environment.

Key Responsibilities

• Deliver and support Microsoft Teams video and voice services across BYOD and corporate desktops

• Provide project support for Office 365, Exchange, and voice migrations

• Maintain, patch, and support Exchange and O365 infrastructure

• Deliver O365 services through hands-on engineering and systems administration, including high availability and disaster recovery

• Manage incidents and problems, performing root cause analysis through to resolution

• Create, update, and maintain Standard Operating Procedures and operational documentation

• Ensure a stable, secure, and compliant O365 platform aligned to agreed SLAs

• Support O365 voice recording migrations in line with project requirements

• Install, test, and support new versions of system software with fallback and contingency planning

• Provide 2nd and 3rd line support for messaging and Microsoft Teams telephony services

• Contribute to O365 product life cycle management and technical roadmaps for messaging, collaboration, and e-Discovery services

Essential Technical Skills

• Subject Matter Expert in Microsoft messaging technologies (Exchange/Office 365)

• Expert-level knowledge of Microsoft Teams, including video and voice

• Strong experience with e-Discovery, compliance, and archiving tools (eg Enterprise Vault, Compliance Accelerator, Discovery Accelerator, Clearwell)

• Microsoft Intune/MDM

• Active Directory, ADFS, federation, and hybrid services

• Microsoft Server technologies

• PowerShell Scripting and automation/orchestration

• Proven experience in design, migration, integration, and implementation of O365 technologies

Professional Experience

• Demonstrable experience providing Office 365 support to 3rd line level

• Strong background in O365, e-Discovery, and compliance implementations and migrations within a global, multi-site organisation

• Working knowledge of Microsoft Teams telephony integration

• Experience resolving complex Exchange performance and messaging issues

• Ability to interface effectively with business users, management, third-party vendors, and support teams

• Strong communication skills, comfortable operating within a global organisation

Desirable Experience & Qualifications

• Experience supporting large user bases (circa 20,000 users)

• Degree-level qualification or relevant technical certification (eg MCSE Messaging, MCSA)

O365 Engineer

Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for interview will be contacted.

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