Senior Systems Engineer

Our IT Managed Services business enables customers to innovate, transform, and seize new opportunities. The Technical Operations function underpins this mission by delivering enterprise-grade, 24x7x365 technical support to mid-market clients across both public and private sectors. We operate a shared services model aligned with ITIL v4, underpinned by ServiceNow, automation, and generative and agentic AI. Our 24x7 Operations squads are responsible for maintaining the stability, security, and continuous improvement of customer environments across cloud, infrastructure, and modern workplace services.

As a Systems Engineer (Modern Workplace), you will specialise in Microsoft 365 and endpoint management services. You will support live service operations across multiple customer environments, ensuring that collaboration platforms, identity services, and end-user technologies remain secure, stable, and well governed. You will contribute to incident resolution, proactive service management, and continuous improvement, while developing deeper technical capability across the Microsoft ecosystem and adjacent automation platforms.

What you will be doing:

• Provide third-line operational support across Microsoft 365 services, including Exchange Online, SharePoint Online, Teams, OneDrive and Entra ID.
• Administer and support Microsoft Intune and endpoint management solutions, including device compliance, configuration profiles, and application deployment.
• Resolve incidents, fulfil service requests, and implement standard changes in line with defined runbooks and ITIL practices.
• Monitor service health, security posture, and platform alerts, taking proactive action to prevent incidents and improve stability.
• Support identity and access management activities, including conditional access, MFA, and role-based access controls.
• Contribute to patching, policy enforcement, and configuration management across Modern Workplace services.
• Use ServiceNow effectively to manage work, maintain accurate records, and ensure Configuration Items are correctly updated within the CMDB.
• Participate fully in shift handovers, maintaining clear and structured communication of risks, actions, and service status.
• Identify repeat issues, inefficiencies, or gaps in documentation and take ownership of improvement opportunities.
• Contribute to the development and maintenance of knowledge articles, runbooks, and operational standards.
• Support and adopt automation practices using PowerShell, Power Platform, or other tooling to reduce manual effort and improve consistency.
• Collaborate with engineers across infrastructure, network, and security domains to resolve cross-platform issues.

Qualifications and experience:

• Strong working knowledge of Microsoft 365 administration in an operational environment.
• Experience supporting Intune / Endpoint Manager and Windows device management.
• Understanding of Entra ID (Azure AD), identity controls, and access governance.
• Practical experience working within an ITIL-aligned support model (Incident, Change, Problem).
• Strong troubleshooting capability, with a structured and methodical approach.
• Experience using ITSM tooling such as ServiceNow.
• Ability to manage workload effectively in a shared services, multi-customer environment.
• Clear and concise communication skills, both written and verbal.
• A disciplined approach to documentation and knowledge sharing.
• Willingness to work a 24x7 shift pattern including nights, weekends, and public holidays.
• Eligibility for UK Government Security Check (SC) clearance.

Desirable skills and experience:

• Experience supporting Microsoft Teams telephony and collaboration services.
• Exposure to Power Platform (Power Automate, Power Apps) for operational improvement.
• Scripting or automation experience using PowerShell.
• Awareness of security frameworks and controls (e.g. conditional access, endpoint security baselines).
• Experience working in an MSP or shared service environment.
• Microsoft 365 Certified: Endpoint Administrator Associate.
• Microsoft 365 Certified: Administrator Expert.
• Microsoft Certified: Identity and Access Administrator Associate.

Please note, applicants must have the legal right to work in the UK at the time of application.

Wellbeing benefits:

• 26 days’ holiday + bank holidays (and the option to buy more) plus 1 paid volunteering day every year.
• Exceptional family leave, 26 weeks fully paid maternity/adoption, 4 weeks fully paid paternity, 22 weeks fully paid shared parental leave, plus 5 days paid bereavement leave.
• Robust sick pay of up to 13 weeks full pay + 13 weeks half pay.
• 24/7 Employee Assistance Programme for confidential support.
• Private medical insurance for everyone, no medical-history exclusions.
• Financial benefits that have your back.
• Performance-based rewards tailored to your role, from company-wide bonuses to OTE and commission structures.
• Income protection: up to 75% salary for 5 years if you ever need it.
• Grow your career with us through SkillsHub learning platform with leadership pathways, future-manager training, and a huge online library.
• Access to external training and apprenticeships.

About OneAdvanced:

At OneAdvanced, we are at the forefront of delivering sector-focused technology solutions that simplify complexity, drive meaningful progress, and help build a fairer, more inclusive society. We’re much more than a software company. We deliver SaaS workflow applications and IT services that power organisations across Education, Government, Healthcare, Legal, Manufacturing, Housing, Retail, and more. OneAdvanced is one of the UK’s largest business software and services companies. Based in Birmingham (The Mailbox), operating across the UK, Ireland, India, and Australia.

Our secure, scalable platform, including OneAdvanced AI, our private AI service for UK organisations, powers connectivity and innovation across critical sectors. Alongside our software are our IT services, including hosting, managed services, and application modernisation. We strive to create an inclusive workplace that drives innovation and collaboration, championing diverse perspectives and ideas. Our Environmental, Social and Governance (ESG) strategy is embedded in everything we do, guiding us to create meaningful impact for our people, our customers and the planet.

Proud to be recognised in the Financial Times’ Best Employers 2026 list for the second-year running, an independent and data led ranking based on employee feedback. Join us and become part of a team that’s powering the world of work and making a real difference.