Jerson Barrios

Microsoft 365 Platform Engineer with over 6 years of experience in enterprise environments, focused on the engineering, configuration, and continuous improvement of Microsoft 365 services aligned with governance standards. Skilled in implementing and enforcing platform governance policies (retention, permissions, and lifecycle management), automating operations with PowerShell and Power Automate, and supporting platform modernization and standardization in large-scale governed tenants. Strong background in Exchange Online and Purview with experience collaborating with Architecture, Security, and IAM teams.

Bilingual

Spanish (native) / English (B2).

Security & Compliance Support Engineer at Microsoft (2024-08 – Present)

• Resolved 35+ monthly enterprise cases involving Microsoft Purview governance, retention policies, Audit, and eDiscovery while maintaining high SLA performance in a large-scale enterprise tenant.
• Reduced average resolution time by 38% by automating platform troubleshooting and governance workflows with PowerShell and Copilot.
• Improved first-contact resolution rate by 25% through process documentation and knowledge base optimization.
• Investigated high-priority compliance incidents using KQL, audit logs, and Microsoft security tools in collaboration with Engineering teams.

Identity Security Specialist at Oxford Computer Group (2023-03 – 2024-08)

• Supported Microsoft Entra ID and Azure IAM environments for 3+ enterprise clients, resolving identity and access-related incidents within SLA targets.
• Configured and troubleshot 50+ Conditional Access policies and identity security controls to strengthen authentication security and compliance.
• Created 20+ KQL queries, analytics rules, alerts, and Sentinel workbooks to improve threat visibility and incident detection efficiency.
• Automated platform governance and monitoring workflows using Azure Logic Apps, reducing manual operational effort by approximately 75%.

IT Support Engineer at El Pelón de la Bajura (2019-11 – 2023-03)

• Administered Microsoft 365 services including Exchange Online, SharePoint, and Teams for 1000+ users across hybrid cloud environments.
• Managed Active Directory and Windows Server infrastructure, maintaining secure access configurations and high service availability.
• Resolved 40+ monthly on-site and remote technical support incidents involving Microsoft 365, user access, and endpoint systems.
• Developed user documentation and training materials that reduced recurring support tickets by 35% and improved user self-service efficiency.

Diploma in Computer Engineering in Computer Engineering – Universidad Estatal a Distancia (UNED) (2028)

Cisco CCNA – Network Technician in Network Technology – Universidad de Costa Rica (UCR) (2020)