Are you a experienced Messaging & Collaboration expert ready to lead enterprise-scale transformation projects? We’re looking for a technically strong and forward-thinking engineer to join a dynamic team driving modern workplace initiatives across messaging, collaboration, and mobile device management platforms.
About the Role
As the Senior Messaging & Collaboration Engineer, you’ll be the technical authority across Microsoft Exchange (on-prem and online), Microsoft 365, Intune, Teams, SharePoint Online, and Azure Active Directory. This is a hands-on engineering and delivery-focused role, offering exposure to both BAU and project work in a fast-paced environment.
You’ll lead solution design, implementation, and optimisation efforts, while acting as a trusted advisor to internal teams. Your work will directly impact service reliability, user experience, and the organisation’s digital transformation journey.
Key Responsibilities
Lead messaging, collaboration, and mobility projects from design to delivery.
Engineer and implement solutions across Exchange, M365, Intune, and related platforms.
Manage hybrid configurations and migration strategies.
Provide Tier-3 support and act as escalation point for complex issues.
Ensure performance, scalability, and compliance across collaboration platforms.
Collaborate with cross-functional teams on security, networking, and integration.
Maintain technical documentation and contribute to strategic roadmaps.
Skills & Experience
Essential:
8–10 years in enterprise IT infrastructure, messaging, or collaboration roles.
Expert-level knowledge of Microsoft 365, Exchange Server 2016/2019, Exchange Online, and hybrid deployments.
Hands-on experience with Intune/Endpoint Manager, Azure AD, Conditional Access, and PowerShell scripting.
Strong understanding of email security protocols (SPF, DKIM, DMARC) and anti-spam/phishing controls.
Proven track record in delivering large-scale transformation and migration projects.Beneficial:
Experience with Microsoft Defender for Office 365, Purview, and Teams Voice.
Familiarity with Zero Trust architecture and Microsoft 365 Copilot readiness.
Exposure to regulated environments (e.g. finance, healthcare, government).
Qualifications
Degree in Computer Science, IT, or equivalent experience.
Relevant Microsoft certifications (e.g. MS-102 – Microsoft 365 Administrator, Endpoint Administration).
Personal Attributes
Proactive, adaptable, and results-driven.
Strong communication and stakeholder management skills.
Excellent problem-solving and decision-making abilities.
Able to thrive under pressure and manage competing priorities.
Job Title: Messaging And Collaboration Engineer
Location: London, UK
Job Type: Contract
Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. (phone number removed). Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as "Allegis Group"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at (url removed)>
To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to (url removed)>
We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the "Contacting Us" section of our Online Privacy Notice at (url removed)/en-gb/privacy-notices for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield