Senior Principal - P&C Platform Engineer

Overview

Hands-on platform engineering role building, automating and running the Microsoft 365 collaboration estate (Teams, SharePoint Online, OneDrive, Exchange Online, Microsoft 365 apps, Power Platform and Microsoft 365 Copilot) used by 50,000+ employees.

What you'll do

• Design, build, test and deploy configuration across the Microsoft 365 estate: Teams policies, SharePoint and OneDrive settings, Exchange Online transport and mail flow, Purview policies, Entra ID groups and Conditional Access as it applies to collaboration workloads.
• Implement to the reference architecture and standards set by the Principal Architect; raise a design challenge when reality does not match the design.
• Deliver backlog items from sprint to production with tests, telemetry, documentation and rollback path included.
• Build and maintain integrations using Microsoft Graph and platform APIs, connecting M365, ServiceNow, HR systems and the wider application estate.
• Automate provisioning, lifecycle, reporting, remediation, joiner/mover/leaver flows, licence assignment and reclamation.
• Express tenant configuration as code in version control; build and maintain CI/CD pipelines with automated validation and staged ring-based rollout.
• Replace manual runbook steps with self-healing and self-service.
• Own operational health of assigned workloads: monitoring, alerting, capacity, service health response and performance.
• Investigate and resolve complex incidents and problems, providing third-line escalation for collaboration platform issues, and drive permanent root-cause elimination.
• Participate in an on-call rotation for major incidents affecting the collaboration platform.
• Manage the continuous change stream from Microsoft: assess message centre and roadmap items, test in a lab tenant, and implement, defer or disable with reasoning recorded.
• Maintain patch, currency and configuration compliance; remediate vulnerabilities and drift.
• Implement and maintain security and information governance controls: sensitivity labels, DLP, retention, external sharing controls, app consent and Conditional Access.
• Produce audit evidence such as configuration baselines, change records and access reviews, generated automatically wherever possible.
• Build to regulated-environment requirements where applicable, including GxP-validated systems and their qualification and change control.
• Work daily with the Product Owner on refinement and estimation, and with the Architect on design; give honest estimates and flag risk early.
• Produce operational documentation, runbooks and knowledge articles usable by the service desk and the next engineer.
• Support and coach the service desk and second-line teams, transferring capability to reduce escalation volume.
• Mentor junior engineers and contribute to engineering standards and code review within the squad.

What you'll need

• Bachelor's degree in Computer Science, Engineering or a related discipline, or equivalent demonstrable professional experience; strong practical experience is an acceptable substitute for formal qualification.
• 15 years overall experience and 10+ years in IT engineering or platform operations, including 5+ years working hands-on with Microsoft 365 in a production enterprise environment.
• Experience supporting or engineering a tenant of 5,000+ users.
• Demonstrable hands-on capability, including troubleshooting, across at least two of Exchange Online, SharePoint Online/OneDrive, or Microsoft Teams.
• Working PowerShell proficiency with real examples of automation delivered into production, plus practical experience calling the Microsoft Graph API.
• Familiarity with Git and pull-request-based working; willingness to work configuration-as-code if not already doing so.
• Experience operating in an ITIL-aligned change and incident process, including production change ownership.
• Experience delivering within a Scrum or Kanban squad, including refinement, estimation and sprint commitment.
• Willingness to participate in an on-call rotation for major incidents.
• Fluent English, written and spoken; able to explain a technical issue to a non-technical colleague.

Nice to have

• Relevant certifications (e.g., Microsoft 365 Certified: Administrator Expert, Teams Administrator Associate, Identity and Access Administrator Associate, Information Protection and Compliance Administrator, Power Platform Solution Architect, Azure Administrator, ITIL v4 Foundation).
• Experience in a regulated industry, including GxP/CSV/CSA and validated-system change control.
• Migration delivery at scale, including on-premises Exchange or SharePoint to cloud, file share to OneDrive/SharePoint, tenant-to-tenant, or third-party platform consolidation.
• Teams Phone / voice: Direct Routing, Operator Connect, PSTN migration.
• Teams Rooms and collaboration hardware deployment, configuration and remote management at estate scale.
• Viva suite implementation: Connections, Engage, Learning, Insights.
• Power Platform development: Power Automate flows, Power Apps, Dataverse, Copilot Studio agents.
• A second language beyond PowerShell (Python, C# or Go) and experience building small services or Azure Functions.
• Infrastructure-as-code tooling (Bicep, ARM or Terraform) for Azure resources supporting the platform.
• Endpoint management adjacency: Intune, device compliance and the endpoint's role in Conditional Access.
• Security engineering exposure: Defender for Office 365, Defender for Cloud Apps, threat hunting in M365 audit data.
• Accessibility testing and remediation in collaboration tooling.

Details

• Location: Bengaluru, India.