Celline Butuem

Summary

Results-driven Systems Administrator with extensive experience managing Microsoft ecosystems, including hybrid cloud environments and enterprise-level identity services. Expert in the day-to-day management of Microsoft 365, Exchange Online, and Microsoft Entra ID to ensure seamless organizational operations. Proven ability to secure and maintain endpoints using Intune and WSUS, while leveraging PowerShell to automate governance and administrative workflows.

Work history

• PWL Capital - Intermediate Systems Administrator (Sep. 2023 - Present)
  • Manage a hybrid environment, balancing physical and virtual server infrastructure with Microsoft cloud-based device and identity management.
  • Administer Microsoft 365 and Exchange Online for enterprise-level communication and collaboration.
  • Utilize Entra ID and Active Directory to ensure robust user and application governance.
  • Oversee comprehensive patching operations using a combination of WSUS and Microsoft Intune.
  • Lead complex project-based tasks, including account migrations for corporate mergers and acquisitions (M&A).
  • Execute IT onboarding and offboarding procedures and serve as an escalation point for Tier 2 technical support.
• Brazilian Air Force - Systems Administrator (Jun. 2016 - Jul. 2019; Dec. 2020 - Sep. 2023)
  • Administered Microsoft Active Directory user and group accounts and optimized attributes via Windows PowerShell scripting.
  • Managed WSUS for centralized update management across the server environment.
  • Administered and supported several services within Docker containers on virtualized Linux servers (VMware).
  • Deployed Zimbra Collaboration Open Source email services across multiple virtualized environments.
  • Developed Shell and PowerShell scripts to automate backups and manage email accounts.
  • Maintained web infrastructure within Docker and managed Samba file servers.
• CUBi Energia - Data Analyst (Dec. 2019 - Dec. 2020)
  • Developed several algorithms to identify cost reduction opportunities relative to energy comsumption, using Python.
  • Data collection procedure optimization by developing a process automation system using shell scripting and Python.
  • Energy consumption data pre‑processing and validation for multiple clients, using Python and BigQuery.
  • Cloud‑based (Google BigQuery) database maintenance for supporting the cost reduction opportunity system.
• Brazilian Air Force - IT Support Technician (Dec. 2006 - Aug. 2014)
  • Configured hardware, devices and software to set up work stations for employees.
  • Removed and replaced malfunctioning components to correct hardware problems.
  • Responded to support requests from end users and walked individuals through basic troubleshooting tasks.
  • Managed IT equipment inventory.

Skills/Tools

• Microsoft 365
• Microsoft Intune
• Microsoft Entra ID
• WSUS
• Exchange Online
• Windows Active Directory
• Bash
• Python
• PowerShell
• Docker
• VMware
• XCP-ng
• Git
• Azure
• AWS
• Linux

Languages

• Portuguese (Brazilian) - Native
• English - Advanced (IELTS General Training ‑ Overall: 8.5)
• French - Intermediate (TEF Canada ‑ Compréhension écrite et orale: C1 ; Expression écrite et orale: B2)

Education

• MSc in Computer Science - Rochester Institute of Technology (2016)
• BSc in Physics - Universidade de São Paulo (2010)
• Technical Diploma in Electronics - Liceu de Artes e Ofícios de São Paulo (2002)

Certifications

• AWS Certified Cloud Practitioner (2022)
• Python Programmer from DataCamp (2019)