Senior SharePoint Platform Engineer London, United Kingdom Full time, Hybrid (3 Days Onsite) Monday • Friday, 9:00 am - 5:30 pm Introduction to the role The Senior SharePoint Platform Engineer is responsible for the administration, architecture, governance, engineering, and continuous improvement of the organisation’s SharePoint Online platform and related Microsoft 365 services. The role designs, builds, and supports secure, scalable, and user-friendly SharePoint sites and business solutions. It combines strong SharePoint platform administration with solution development, automation, integration, and migration capabilities. This role partners closely with business stakeholders, product owners, and IT teams to deliver solutions that improve productivity, enhance collaboration, and standardize information management. Key Responsibilities SharePoint platform administration and architecture • Administer and support SharePoint Online. • Define and maintain the SharePoint Online architecture. • Manage site creation, configuration, ownership, permissions, sharing controls, storage, versioning, restoration, archival, and deletion. • Establish standards for site structure, naming, metadata, content types, site columns, navigation, and information architecture. • Implement lifecycle controls for inactive, ownerless, duplicated, or non-compliant sites. • Monitor service health, usage, adoption, storage, capacity, and performance, recommending improvements where required. Security, compliance, and governance • Design and implement secure access models using role-based access, least-privilege principles, and appropriate permission inheritance. • Manage permissions across SharePoint sites. • Monitor and remediate oversharing, broken permission inheritance, orphaned sites, inappropriate access, and unsupported customisations. • Ensure SharePoint and Power Platform solutions comply with organisational security, data-protection, risk-management, and regulatory requirements. Solution engineering and automation • Design and build modern SharePoint Online sites aligned to information architecture and user and organization needs. • Create reusable templates, components, provisioning patterns, and automation to improve delivery speed and platform consistency. • Develop Power Apps for digital forms, user experiences, and business processes. • Build and maintain Power Automate flows. • Develop secure solutions that interact with SharePoint, Dataverse, SQL, Microsoft Graph, and approved enterprise services. • Manage project development and code with DevOps/ GIT. Migration delivery • Plan and deliver SharePoint Online migrations from our various tenants. • Provide post-migration support and contribute to the controlled decommissioning of legacy sites. Operational support and continuous improvement • Provide ongoing operational support for SharePoint Online and Power Platform solutions. • Perform root-cause analysis and implement preventative improvements for recurring or high-impact issues. • Support incident, problem, change, release, and request-management processes. • Maintain technical designs, configuration records, support runbooks, release notes, user guides, and knowledge articles. • Define and document restoration, recovery, versioning, recycle-bin, and business-continuity procedures. • Deliver training and enablement sessions for business users, site owners, content owners, and support teams. • Identify opportunities to reduce manual work through automation, standardisation, reusable components, and self-service services. • Maintain awareness of developments across Microsoft 365, SharePoint, Microsoft Entra ID, and Power Platform. Required Skills & Experience * 5 or more years of hands-on SharePoint administration and engineering experience, including ownership or support of enterprise-scale SharePoint Online environments. • Strong experience administering SharePoint Online through the SharePoint Admin Center and Microsoft 365 Admin Center. • Strong understanding of SharePoint Online architecture, governance, permissions, security, sharing, storage, search, and lifecycle management. • Experience designing, building, and supporting modern SharePoint Online sites and solutions. • Experience with hub sites, communication sites, team sites, Teams-connected sites, Microsoft 365 Groups, private and shared channel sites, and OneDrive. • Strong knowledge of information architecture, including content types, site columns, metadata, managed terms, the Term Store, navigation, and search configuration. • Experience managing tenant-level and site-level sharing controls, guest access, permission inheritance, and secure collaboration patterns. • Demonstrated experience planning and delivering SharePoint or Microsoft 365 migrations. • Hands-on experience with Power Apps, including forms, validation, user experience design, security, and connectors. • Hands-on experience with Power Automate, including multi-step flows, approvals, expressions, exception handling, retry logic, notifications, and integrations. • Strong PowerShell and PnP PowerShell skills for tenant administration and operational automation. • Experience working with Microsoft Graph, SharePoint REST APIs, Dataverse, SQL, and enterprise data sources. • Experience using Git and Azure DevOps, or equivalent tools, for source control, work management, testing, deployment, and release management. • Experience with application lifecycle management, including versioning, testing, environment management, release processes, rollback planning, and operational support. • Experience with SharePoint Framework, TypeScript, React, Node.js, and custom solution deployment is desirable. • Strong understanding of permissions and security concepts (SharePoint groups, RBAC-style patterns, sharing controls). • Working knowledge of Microsoft Entra ID and its relationship with Microsoft Ecosystem. • Experience applying Power Platform governance, environments, and DLP policies. • Experience working in a regulated, risk-sensitive, or compliance-driven environment. • Awareness of Microsoft 365 and Power Platform licensing dependencies, premium connectors, environment capacity, and platform limitations. • Strong troubleshooting and root-cause analysis skills across SharePoint, OneDrive, Power Platform, permissions, search, integrations, and migrations. • Demonstrated experience delivering platform changes and solutions end to end. • Strong stakeholder management and customer-focused mindset. • Excellent written and verbal communication skills. • High attention to detail, particularly in relation to permissions, migrations, data handling, compliance, and production changes. • Ability to manage multiple priorities, communicate risks and dependencies, and deliver work to agreed deadlines. • Strong ownership, collaboration, problem-solving, and continuous improvement mindset. • Bachelor’s degree in Computer Science, Information Systems, or a related field, or equivalent practical experience. • Current and relevant Microsoft certifications in Microsoft 365, SharePoint, Power Platform, Azure, Microsoft Entra ID, security, or compliance are desirable but not essential. CSC is a global business, legal, and financial services company based in Wilmington, Delaware, USA, providing knowledge-based solutions to clients worldwide. We have offices and capabilities in over 140 jurisdictions in the Americas, Europe, Asia Pacific, and the Middle East, and more than 8,000 colleagues. We are the business behind business.® Visit our careers site to learn more about CSC and our commitment to our clients, communities, and each other. CSC is committed to creating a feeling of belonging through a diverse and growth-oriented environment where everyone is valued. CSC colleagues have global career opportunities and excellent benefits, including annual success-sharing bonuses or commission plans based on individual performance. To learn more, visit cscglobal.com/service/careers. We offer a range of support to colleagues with disabilities, ensuring people have the necessary resources to thrive in their roles. We encourage candidates to work closely with our talent acquisition partners to convey their specific needs. Our commitment to accessibility reflects our broader dedication to diversity and belonging, CSC only accepts resumes from employment agencies that are part of our approved supplier program. Resumes submitted from other agencies either to talent acquisition, our hiring leaders, employees, or through any other mechanism other than our supplier process, will not be eligible to claim related fees and the submitted resumes will be considered property of CSC. We encourage candidates to apply directly to our website and not through third-party sources. Disclaimer: The information above describes the general nature and level of work performed by employees in this role. It is not intended to describe all duties, responsibilities, and qualifications. At CSC®, we’re always looking ahead, finding ways to innovate, challenge the status quo, and anticipate the needs of our clients. We exceed expectations by adapting client ambitions and goals as our own. This Fierce Client Spirit has helped us adapt and create solutions that have enabled businesses to run smoother and smarter for more than 125 years. It’s also the reason we’re the trusted partner of many of the world’s most successful organizations. CSC is committed to attracting, developing, and retaining talented people whose values align with ours. We empower our colleagues to bring the right solutions to market to meet client demand. That’s why we are the leading provider of business administration and compliance solutions. • CSC is a great place to work with smart and dedicated people. • We have won several employer recognition awards, including Top Workplace USA, Great Places to Work India, and Built In’s Best Places to Work. • We offer fulfilling work and career opportunities. Most positions are filled with internal moves and employee referrals. • Employees are eligible for Success Sharing, bonuses, or commission plans based on role and individual performance. • CSC offers a competitive and comprehensive benefits package that includes annual leave, tuition reimbursement, referral bonuses, and more. • As business needs allow, CSC offers hybrid or remote work schedules in alignment with local regulations. Specific details for this position will be discussed during the interview process.