
Greshan B
Founder of Secure Digital Labs
Habilidades

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Experiência profissional
Contractor
Período integral • 2 yrs 9 mos
Infrastructure Engineer (Level II / Advanced Specialist)
Jul 2025 - Present • 10 mos
Support Microsoft 365 and Google Workspace environments for business clients, delivering setup, administration, and advanced troubleshooting across core cloud services. Work extensively with Exchange Online, Microsoft Teams, SharePoint, and OneDrive, resolving real-world issues including mail flow problems, access and permission issues, syncing errors, and service configuration challenges. Strong focus on email systems and deliverability, including SPF, DKIM, and DMARC configuration, spam filtering, and DNS management. Experience gained within an MSP environment, handling a wide range of client scenarios beyond what is listed here, including collaboration platforms, security tooling, and cloud service integrations.
2nd Line Infrastructure Engineer
Sep 2023 - Aug 2025 • 1 yr 11 mos
Provided second-line support within an MSP environment, managing Microsoft 365 and Google Workspace environments for business clients. Worked across Exchange Online, Microsoft Teams, SharePoint, and OneDrive, handling complex issues including mail flow failures, permission and access problems, tenant configuration, and service-related incidents. Regularly resolved email deliverability issues using SPF, DKIM, and DMARC, alongside DNS troubleshooting and domain configuration. Also supported email security platforms and collaborated with vendors such as Microsoft to drive issue resolution and ensure service reliability.