Cristian Arencibia

Experience

• 

  Florida Power & Light

  May 2017 - Aug 2024

  Work with different Microsoft products including Exchange 2010, 2016 and Office365, Lync, Skype for business, and MS Office Suites, while Administering Exchange Online using ECP and EAC in a Hybrid email environment.• Knowledge in Synchronizing Directory from On-premises to Office 365 using different identities.• Proficient in message tracking and troubleshooting to resolve mail flow delivery issues.• Responsible for all components of Office 365 including Skype for Business and Teams.• Expertise in providing solutions for High Availability in Exchange.• Experience in Monitoring, troubleshooting the server using tools such as Event Viewer, MMC.• Team Player in implementing and deploying MS infrastructure and MS Office 365.• Provided support for server 2008/R2, 2012/R2 on components, exchange 2010/2016.• Assisted in public folder creation, replication, rights assignments, free busy related issues.• Participated in Migration from Exchange 2016 On-premises to online 365.• Manage accounts in Active Directory, Exchange On-Premises and Microsoft 365 online.• Migration of Microsoft messaging technologies to newer versions.• Worked with business units to incorporate Office 365 and cloud-based solutions into operation.• Plan, test, and deploy, monthly patches and cumulative updates to all environments.• Document the Microsoft O365/Exchange and Messaging-computing environment. • Primary point- of- contact for third party vendor reported incidents.• Vast experience in troubleshooting and resolving both client and server-side issues. • Create user accounts, assign group rights, create distribution lists, and group policy objects.• Assigned E3 and E5 Office Enterprise licenses. • Clean Active Directory User Objects inconsistencies, that prevented them from synchronizing.• Over 3 + Years of Experience Azure Active Directory, Active Directory,Windows Admin and VM Ware Administration. Show less Execute successful SOX Audits of Privileged Access and Restricted Active Directory groups while working closely with Auditors, Outside Vendors, and Inter-departmental teams to ensure Audit projects are completed within the established deadlines.• Responsible for Active Directory Privileged and Restricted groups access recertification• Provide RSA remote VPN access by enabling software and hardware token • Responsible for providing Managed Permanent and Temporary Local Admin rights to company assets• Manage Remote Desktop user access to computers, laptops and servers• Administer Information Security’s Shared Mailbox granting access and creating rules for optimal performance• Create RACI chart for inter-departmental teams to establish roles and responsibilities • Continuously update documentation of Information Security procedures• Perform Identity and Access management utilizing EAMS, ISIM and ITIM software• Develop and produce reports on all activities and incidents to help maintain day to day status • Assist the Cyber Security Manager in providing leadership with overview of risks and threats to the organization• Define, implement, and maintain corporate security policies• Protect digital files and information systems against unauthorized access, modification or destruction• Troubleshoot server and remote access issues• Analyze security breaches to determine their root cause• Work closely with IS operations, network, and system administrators to determine a Cyber Security risk • Plan, implement and upgrade security measures and controls• Approve or Deny access to employee emails, computers, and files• Resolve any Email related issues the Information Security team members encountered • Develop, maintain, and enforce effective corporate wide processes • Deliver projects on time and within budget that meet planned benefits• Ensure infrastructure and application support is managed effectively Show less

  • System Administrator

    Apr 2013 - Aug 2024

  • Senior Exchange/Microsoft Office 365 Engineer

    Feb 2019 - Jan 2021

  • IT Systems Administrator/Cybersecurity Analyst

    May 2017 - Feb 2019
• 

  Lansing Board of Water & Light

  Jan 2021 - now

  Senior Systems Engineer

  Remotely implement Information Technology solutions on Windows Sever OS 2019, Active Directory, Group Policy, VMware, Exchange 2019/M365, and Azure cloud technologies; while working in a fast-paced, deadline-oriented environment with a necessity for quick response times.• Manage role-based levels of access to networks, systems, customer, and company info.• Active Directory Group creation and Add/Removal of members.• Dispense File Share Access Requests.• Execute Rubric File Restores.• Responsible for VMware vSphere 4.0 Migration and creation of Data Stores.• Create and link new AD Group Policies to different Organizational Units.• Demonstrating superior multitasking, organization, and prioritization skills.• Provisioning licenses via Azure Portal.• Patching Windows Servers and deploying cumulative updates using SCCM tool.• Utilize strong problem-resolution and conflict-management skills.• Azure Active Directory Privileged Identity Management (PIM) administration.• Provide 3rd-level escalation and Executive Support.• Execute knowledge transfers and upskilling to customer personnel to ensure self-sufficiency.• Microsoft Azure Operational and Monitoring tools, including Azure Monitor and Log Analytics.• Experience in leading technical teams and interacting with stakeholders for Problem Analysis.• Strong interpersonal skills and effective collaboration with team members, clients, and Execs.• Experience in PowerShell scripting and Automation.• Provide operational training to end-users, as required.• Resolve support requests and perform preventive maintenance on production systems.• Ensure the stability, integrity, and efficient operation of in-house information systems.• Responsible for Privileged Access and Restricted Active Directory groups recertification• Manage Remote Desktop user access to computers, laptops and servers• • Proofpoint Administration to prevent Phishing, Malware Attacks and Data Loss; Email Search and Security. Show less