Open to opportunities

Obi Williams

@obiwilliams

Microsoft 365 administrator focused on secure customer support, account growth, and reliable Exchange and Teams operations.

Nigeria

Message

What I'm looking for

I’m looking to join a team where I can own Microsoft 365 administration and security support—improving customer satisfaction, strengthening compliance, and partnering with sales and clients to drive retention and measurable account growth.

I’m a results-driven Microsoft 365 professional combining customer support, account management, and technical troubleshooting to deliver fast, dependable service. Currently, as a Microsoft 365 Billing Officer at Reliance Infosystems, I act as a primary point of contact for clients, manage M365 licenses and subscriptions, and ensure invoicing aligns with Microsoft Partner Network policies and partner agreements.

Previously, I delivered Microsoft 365 security and compliance support as a Technical Support Engineer, resolving security concerns using Data Loss Prevention (DLP), Microsoft Defender, and Conditional Access—and helping clients enable MFA to strengthen their cloud security posture. I also supported complex Exchange Online and hybrid environments, leading troubleshooting for mailbox migration and email flow issues, configuring connectors with TLS certificates, and guiding DNS setup with MX records, SPF, DKIM, and DMARC.

Experience

Work history, roles, and key accomplishments

Current

Billing Officer (M365)

Current

Reliance Infosystems

Jan 2025 - Present (1 year 5 months)

Served as primary client point of contact, managing relationships and ensuring satisfaction with Microsoft services. Processed monthly/annual Microsoft invoices, managed M365 licenses and subscriptions, and generated billing reports while ensuring compliance with Microsoft Partner Network (MPN) policies.

Invoice Processing M365 License Management Account Management Azure Consumption Charge Calculation Billing Client Relationship Management

Microsoft 365 Support Engineer

Arina Cares

Jan 2024 - Jan 2025 (1 year)

Resolved Microsoft 365 security and compliance issues, improving customer satisfaction through faster, more efficient remediation. Supported and implemented security features including DLP, Microsoft Defender, and Conditional Access, and helped set up MFA and conditional access policies.

Microsoft Defender Conditional Access Identity & Access Management Account Provisioning (M365)Cross Team Escalation Support

Microsoft 365 Support Engineer

TEK Experts

Jan 2022 - Jan 2023 (1 year)

Troubleshot Exchange Online and hybrid Exchange issues, including mailbox migrations, delivery failures, and email flow problems, minimizing client disruption. Configured secure hybrid email connectivity (including TLS certificates and Exchange connectors), supported EOP troubleshooting, and advised on retention, archiving, DNS (MX/SPF/DKIM/DMARC), and migration best practices.