At a Glance
- Tasks: Engineer and support secure, automated solutions across M365, Azure, and Identity platforms.
- Company: Join a leading tech firm focused on innovation and collaboration.
- Benefits: Competitive salary, flexible working options, and opportunities for professional growth.
- Other info: Dynamic role with excellent career advancement potential.
- Why this job: Make a real impact by enhancing cloud security and operational efficiency.
- Qualifications: Extensive experience in Azure, Exchange Online, and identity management required.
The predicted salary is between 63000 - 77000 £ per year.
Why we need this role The Senior IT Infrastructure Engineer (M365, Azure, Exchange online & Identity) is responsible for the engineering, implementation, and operational support of Microsoft 365, Azure, Exchange online and enterprise identity (AD/Entra).
The role delivers secure, standardised, and automated solutions, translating architectural designs, standards, and roadmaps into robust, scalable platform implementations and operational services.
Working as a senior technical expert within the engineering team, the role collaborates with Architecture, Security, Development, and Operations teams to ensure solutions are delivered, integrated, and operated effectively.
It embeds security, resilience, automation, and operability by implementation, driving consistency and optimisation across M365, Azure, Exchange online, and Identity platforms.
Through engineering excellence, the role reduces risk, complexity, and manual effort, improves resilience and service stability, and supports cost-efficient platform operations.
What you will do Engineers and supports solutions across M365, Azure, Exchange online and Identity, ensuring platforms, tooling, interfaces, and configurations are secure, resilient, automated, and operationally effective.
- Microsoft 365 Platforms: Implementation, configuration, and support of collaboration and productivity services (inc.
Teams, Exchange, Share Point, One Drive, Intune), including governance controls, security settings, and lifecycle activities
- Azure Cloud: Deployment and support of landing zones, subscriptions, connectivity, platform services, and governance controls aligned to architectural standards
- Exchange Administration: Design, implement, administer, and support Microsoft Exchange Online within a Microsoft 365 environment.
- Identity & Access: Engineering and operation of Active Directory and Entra ID, including authentication, Conditional Access, privileged access, identity governance, and directory integration
- Cloud Security & Compliance: Implementation and maintenance of secure configurations, monitoring, logging, encryption, and policy enforcement across cloud and identity platforms
- Delivers and supports standardisation, automation, tooling, and consistency across cloud, workplace, and identity platforms Key Accountabilities 1.
Solution Engineering & Operation Implement and operate infrastructure and platform solutions aligned to architectures, standards, and patterns Build, configure, and operate end-to-end cloud, M365, and identity solutions Act as senior escalation points for engineering and operational issues 2.
Security, Resilience & Operability Implement and operate secure-by-design configurations Ensure resilience, recoverability, monitoring, and operational readiness are delivered and sustained 3.
Roadmap Execution Deliver and operate roadmap initiatives and platform improvements Support planning and execution of engineering and operational changes 4.
Cross-Domain Collaboration Work with Architecture, Security, Development, and Infrastructure teams to deliver integrated solutions Ensure solutions are tested, transitioned, and fully operational 5.
Vendor & Technology Engagement Work with vendors to support implementation, operation, and issue resolution Contribute to platform, tooling, and operational improvements 6.
Operational Governance & Support Ensure solutions align to standards and are maintained through BAU lifecycle Support incident, problem, and continuous service improvement activities 7.
Automation, Standardisation & Optimisation Implement and operate automation-first solutions Reduce manual effort, technical debt, and complexity Improve stability, consistency, and operational efficiency at scale Operational Support Participate in an on-call rota for priority incident support Leadership & Behavioural Expectations Operates as a senior engineer with strong ownership, accountability, and delivery focus.
- Ownership & Execution: Delivers reliable, secure solutions end-to-end, translating design into high-quality implementation
- Technical Leadership: Acts as SME across cloud, M365, and identity, resolving complex technical challenges
- Collaboration & Influence: Works effectively across teams, contributing to design decisions and stakeholder outcomes
- Adaptability & Improvement: Responds to challenges while driving automation, optimisation, and clear communication What we're looking for Skills & Experience Essential Extensive experience in engineering and supporting Exchange online, Identity, workplace, and Azure Cloud Strong expertise across: Microsoft 365 configuration, administration, and security.
Strong expertise in Exchange Online and Microsoft 365 administration.
Experience with Microsoft Defender for Office 365 and Exchange Online Protection.
Understanding of email authentication technologies including SPF, DKIM, and DMARC.
Experience with Microsoft Purview, Compliance Center, and retention policies.
Manage mail flow, connectors, transport rules, accepted domains, and email security policies.
Perform tenant-level Exchange administration using Exchange Admin Center (EAC) and Power Shell.
Azure cloud engineering (deployments, governance, connectivity) Identity and access (Active Directory, Entra ID, authentication, access control) Support identity integration with Microsoft Entra ID (Azure AD), Active Directory, and Azure AD Connect.
Security configuration and resilience practices Automation and operational tooling (Power Shell, scripts, Ia C concepts) Strong troubleshooting and problem-solving capability Experience working in enterprise-scale environments Summary A senior IT engineering role responsible for implementing and operating secure, automated, resilient, and scalable M365, Azure, GCP, and Identity platforms, ensuring solutions are delivered effectively and operated reliably while driving continuous improvement and operational excellence.
IT Infrastructure Platform Architect in London employer: Colt Telecom
Colt is an exceptional employer that empowers its employees to thrive in a dynamic and inclusive work environment. With a strong focus on personal and professional growth, Colt offers flexible working hours, opportunities for further development, and a supportive global network. By joining Colt, you will be part of a diverse team dedicated to driving innovation and delivering impactful solutions for multinational enterprise customers.
StudySmarter Expert Advice🤫
We think this is how you could land IT Infrastructure Platform Architect in London
✨Join the IT Consultancy Buzz
Get involved in local or virtual IT consultancy meetups and forums. This is where we can rub shoulders with industry professionals, get insights into what Colt Telecom values, and even spot unadvertised opportunities. Don't miss out on these chances to make a name for ourselves in the IT world!
✨Show Off Your Skills
Create a personal project or case study relevant to the challenges Colt Telecom might face. Use platforms like GitHub or Medium to share your findings. This not only demonstrates our consulting skills but shows a proactive attitude, making us stand out from the crowd when applying for that full-time gig.
✨Leverage LinkedIn for Connections
Follow and engage with the relevant thought leaders and influencers in IT consultancy on LinkedIn. Share insightful content and join discussions to gain visibility. A well-placed comment or shared article could catch the attention of someone at Colt Telecom!
✨Direct Apply to Colt Telecom
Let's not forget to apply directly through the Colt Telecom website! Tailor your application to showcase our understanding of their consulting style and how we can contribute to their projects. A personalised approach can make a huge difference in landing that full-time position!
We think you need these skills to ace IT Infrastructure Platform Architect in London
Some tips for your application 🫡
Showcase Your Problem-Solving Skills:In IT consulting, it's all about problem-solving, so make sure your CV highlights your analytical skills and any relevant projects you've tackled. Mention specific technologies or methodologies you've used to resolve issues or improve processes; this shows you can think critically and deliver results, which is vital for us at Colt Telecom.
Highlight Relevant Certifications:Certifications like ITIL, PMP, or even specific tech stack qualifications can really make you stand out. Make sure to include these in your CV, as they not only demonstrate your expertise but also your commitment to staying current in the field. We love seeing candidates who are proactive about their professional development!
Tailor Your Cover Letter:Your cover letter is your chance to connect personally with us at Colt Telecom. Share stories about your experiences in IT consulting, and how they shaped your desire to join our team. Mention why you’re excited about this particular role, and how you see yourself contributing to our projects.
Keep It Clear and Concise:We're all busy, so make sure your application is easy to read. Use bullet points for key achievements, and don’t overload us with jargon. A clean, professional layout goes a long way. Remember, the clearer your application, the more likely we are to invite you in for an interview!
How to prepare for a job interview at Colt Telecom
✨Brush Up on Your Technical Skills
For an IT consulting role, be ready to demonstrate your technical prowess. You might face questions on systems integration, cloud technologies, or even troubleshooting specific software. If you have experience with tools like AWS, Azure, or even specific programming languages, make sure you can talk about them fluently.
✨Showcase Your Problem-Solving Approach
IT consulting is all about solving problems for clients. Think about how you can illustrate your approach to a past challenge using the STAR method (Situation, Task, Action, Result). It's a great way to show how you tackle complex issues and come up with effective solutions.
✨Know the Business Impact of IT Solutions
When discussing your experiences, focus not just on the tech solutions you implemented, but also on their business impact. Employers want to see that you can connect IT with organisational goals. Prep examples that highlight how your tech contributions improved efficiency or reduced costs for past clients or projects.
✨Prepare for Behavioural Questions
Since IT consulting often involves teamwork and client interactions, expect behavioural questions that assess your interpersonal skills. Be prepared with examples that demonstrate your adaptability, communication skills, and how you handle client feedback. Before the interview, think of situations where you worked closely with clients to create effective IT strategies or changes.
