Senior Microsoft 365 Engineer
£65,000 – £70,000 + Excellent Bonus & Benefits
Location: London (Hybrid Working)
Role Overview
This role is suited to a hands-on M365 Enigneer looking to deepen their expertise in a modern, cloud-first environment, with a strong focus on Microsoft technologies and Azure.
You will play a key role in supporting, evolving, and modernising a hybrid infrastructure estate, balancing day-to-day operational support with ongoing cloud adoption and platform improvement initiatives.
The position offers an opportunity for either an experienced 3rd Line Engineer ready to step into a more senior role, or a seasoned engineer looking to transition further into Azure-focused engineering. You will be expected to take ownership of technical solutions, contribute to architectural decisions, and act as a key escalation point within the wider technology team.
Key Responsibilities
Platform Engineering & Ownership
* Design, implement, and maintain core Microsoft platforms across a hybrid environment
* Support the ongoing evolution from on-prem infrastructure to cloud-based services
* Manage configurations, policies, and platform optimisation across Microsoft technologies
Cloud & Infrastructure Operations
* Monitor, maintain, and troubleshoot both cloud and on-premises infrastructure
* Support migrations, upgrades, and decommissioning of legacy systems
* Ensure high availability, performance, and reliability of core services
Technical Leadership & SME Capability
* Act as a subject matter expert across Microsoft and Azure technologies
* Provide technical leadership and guidance to engineers across the team
* Mentor junior team members and support knowledge sharing
Stakeholder Engagement
* Work closely with internal stakeholders to gather requirements and translate them into technical solutions
* Provide clear technical input into projects, improvements, and system changes
* Confidently engage with both technical and non-technical audiences
Support & Escalation
* Act as an escalation point for complex technical issues across infrastructure and cloud services
* Support 1st and 2nd line teams, including participation in out-of-hours support where required
* Troubleshoot and resolve issues across legacy and modern platforms
Project & Delivery Support
* Collaborate with project and delivery teams to ensure smooth implementation of new systems and services
* Contribute to technical design and ensure alignment with existing architecture
Documentation & Governance
* Produce and maintain clear technical documentation and support materials
* Work with Security teams to ensure platforms align with security standards and best practices
Essential Experience
* Experience supporting and managing Microsoft-based environments (including M365 and Azure)
* Strong background in hybrid infrastructure (on-prem and cloud)
* Experience in a 3rd line or senior infrastructure engineering role
* Knowledge of identity, access management, and policy-driven environments
* Understanding of cloud security principles and best practices
* Experience troubleshooting complex infrastructure and platform issues
* Strong stakeholder engagement and communication skills
* Analytical mindset with strong problem-solving capability
* Ability to work independently and manage competing priorities
Desirable Experience
* Experience migrating services from on-premises to Azure
* Exposure to cloud cost optimisation and resource management
* Experience working in evolving or transformation-led environments
* Relevant Microsoft or cloud certifications