Architect, Office 365

Role Description

The Office 365 Architect will define, design and govern LSEG’s Office 365 services, ensuring they are secure, scalable, compliant and aligned to business needs. The role will cover all related Office 365 capabilities.

Key Responsibilities

• Own the target architecture and roadmap for Office 365 services.
• Design secure and supportable solutions across Exchange Online, SharePoint Online, OneDrive, Teams and related services.
• Provide architecture oversight for migrations, integrations, enhancements and new service introductions.
• Take new integrations, services and significant changes through the LSEG governance process, including architecture review, required documentation and approvals.
• Work with Cyber Security, Identity, Risk, Compliance, Legal, Operations and business stakeholders to ensure solutions meet enterprise requirements.
• Define standards for tenant configuration, collaboration, external sharing, guest access, retention, information protection and lifecycle management.
• Maintain architecture documentation, solution designs, decision records and service patterns.
• Assess Microsoft roadmap changes and recommend improvements to security, resilience, usability and cost efficiency.

Required Skills & Experience

• Strong experience in Office 365 architecture within a large enterprise.
• Deep knowledge of Exchange Online, SharePoint Online, OneDrive, Microsoft Teams and Office 365 administration.
• Strong understanding of Entra ID, conditional access, MFA, hybrid identity and privileged access.
• Experience with Microsoft 365 security and compliance capabilities, including Purview, DLP, retention and sensitivity labels.
• Experience designing governance models for Teams, SharePoint, external sharing and collaboration services.
• Strong understanding of enterprise architecture, service introduction, operational readiness and technology governance.
• Ability to produce clear architecture documentation and communicate effectively with technical and non-technical stakeholders.

Must-Have Skills

• Microsoft 365 / Office 365 architecture.
• Exchange Online, SharePoint Online, OneDrive and Teams.
• PowerShell, Microsoft Graph or automation experience.
• Entra ID, conditional access and MFA.
• Microsoft Purview, DLP, retention and sensitivity labelling.
• Secure collaboration and information protection.
• Architecture governance and design approvals.
• Stakeholder management and communication.

Good-to-Have Skills

• Microsoft 365 certifications.
• Power Platform governance knowledge.
• Tenant-to-tenant migration experience.
• Microsoft 365 Copilot.
• LeanIX, ServiceNow, Jira or Azure DevOps experience.
• Financial services or regulated-industry experience.

Career Stage:

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

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