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Exchange/0365 and Cloud Engineer

Norwalk, CT
April 19, 2022

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Combined software IT and Microsoft Exchange/Office 365 experience: 16+ years.

Past 10+ consecutive years concentrated on Microsoft Exchange/Office 365 and Cloud.

Experience with multiple versions of Exchange including Exchange 2010, Exchange 2013, Exchange 2016, Exchange 2019, and Exchange Online.

Experience working with hybrid Exchange environments, including Exchange 2016 and 2019.

Manage Microsoft Exchange Servers, configuring, patching, and troubleshooting, including DAGs, database maintenance, server health and performance.

Managed Skype for Business server enterprise environments such as, apply conferencing policies, client policies, analyze the topology and deploy multi-site servers.

Deploy, configure, and manage Azure services for hybrid/cloud environments.

Managed Active Directory infrastructure, DC’s, domain and trust, sites and services, plan and deploy new GPOs, add, change, remove DNS records, DHCP administration.

Experience supporting physical and virtual Windows server editions, such as performance issues, enable/disable new server roles, create schedule tasks for process automation, and connectivity/network issues.

Practitioner of ITIL methodology for incident, request, and change management.

Experience deploying edge servers for Exchange and Skype within the DMZ network following best practices and requirements to secure external connection to the environment.

Manage Veritas backup solution for virtual and physical server, worked with server rollbacks and restore servers from an existing backup.

Create batches of users via PowerShell, to move mailboxes from an existing version of Exchange to an upgraded version of Exchange.

Performed administrative tasks with PowerShell for Exchange, Azure, Skype for Business, SharePoint, and One Drive.

Automation of daily basis reporting, monitoring and tasks with PowerShell scripts combined with schedule tasks.

Experience with pools, pool paring scenarios, SQL mirroring and high availability for Lync/SFB services.

Ability to plan, design, deploy, and support infrastructures in multiple scales and complex scenarios.

Lead and support Active Directory cleanup process and analyze tombstone object using ADSI edit and IDFix.

Plan, identify and map out Active Directory OU strategies and security policies to comply with Federal Security mandates.

Experience working with Windows and Linux environments including system administration, troubleshooting and performance.

Configure ADFS to provide seamless SSO to end users.

Configure ESX server for the time synchronization between ESX and VMs.

Experience working with Hypervisors such as, VMware, and Hyper-V including virtual networking, SAN, ISCSI disks, templates.

Troubleshoot Skype for Business issues such as, implementation/post-migration issues, dialing calls, presence, contacts, voice quality services.

Troubleshoot issues with email filtering, spam, OWA access, and slow performance, providing on site and remote diagnosis and solution.

Handle requests related to mail quotas, delegation, rights management, and individual email restores.

Install and configure SCCM, apply standards for Site and International sites.

Troubleshoot load balancing issues causing client connectivity and latency issues.


Exchange – Hybrid/Cutover/Staged migrations, Centralized, Non-centralized, Database Availability Group (DAG), Client Access Array (CAA), Recipient management, DAC Mode, Hub Transport Server, Outlook Web App (OWA), High Availability, Resiliency.

Office 365 - Exchange Admin Center (EAC), Licensing, Active Directory Federation Services (ADFS), Exchange Online Protection (EOP), Security and Compliance center, Azure AD Connect, Azure AD (AAD), Usage reports, Service health.

Servers - Microsoft Exchange Servers 2010, 2013, 2016, 2019, Windows Servers 2019, 2012 R2, 2012, 2008 R2, 2008 R2, SQL Server, Oracle Server.

Software and Cloud Tools: SCCM, AirWatch, Mobile Iron, SharePoint Online, OneDrive, Intune, Endpoint Manager, Autopilot, Power Apps, Flow.

Databases: SQL, MySQL

Change Management tools: Remedy, Service Now.

Hypervisors: Hyper-V, VMWare, VirtualBox.

Microsoft technologies - Microsoft PowerShell (5.0, 4.0, 3.0), Active Directory, Azure AD.

Unified Communications - Pool Pairing, SQL Mirroring, Persistent Chat, Web App Server, Windows Fabric, User Groups, VOIP, UC, Reverse Proxy, Survivable Branch Appliances (SBA), Session Border Control (SBC), SIP, SIP Trunk, Migration, Edge Server, Dial-In/Dial-Out, Skype for Business, Teams, Direct Routing, UDP, STUN/TURN

Cloud Environments - Microsoft 365, Microsoft Azure, AWS.

Operating Systems: Linux, Windows.

Networking: TCP/IP, LAN/WAN, routers, and switches.


Exchange Engineer

03/2020 – Present

Xerox Corporation, Norwalk, CT

Xerox Holdings Corporation is an American corporation that sells print and digital document products and services in more than 160 countries.

Installed and provisioned Windows Server 2016 in order to deploy the Exchange server software.

Validated the ADFS environment before the migration, configuring it following the best practices for optimal performance for Office 365.

Migrated 18,000 users from Skype for Business Online to MS Teams.

Planned, deployed, and configured MS Teams coexistence mode, policies, direct routing, and QoS.

Managed internal an external DNS services for the deployment of Exchange 2016 hybrid environment.

Created DAGs, policies, and connections for the new Exchange environment.

Configured Retention Tags and Policies for 25,000 mailboxes on Exchange.

Managed and deployed Exchange DLP policies in Office 365 for support and protect data.

Troubleshot post-migration issues with Exchange mailboxes including, moves, free/busy, calendar, delegation, mail delivering issues.

Enabled SFBO licenses for 18,000 users and configure and deploy Skype-for-Business client, policies, and enterprise voice solutions.

Validated tenant configurations, policies, and requirements to enable the Office 365 hybrid environment.

Planned, configured, and deployed Azure AD Connect solution to enable the sync of the on-prem AD.

Worked with PowerShell scripts to automate, monitor, report and do daily basis tasks such as, account creation, permissions, enable/disable policies, licensing, for Exchange, SFB/Teams, Azure, SharePoint, and One Drive.

Enabled authentication for cloud apps with Azure App registration, including claims, tokens, and certificates.

Configured Intune for mobile device authentication, registration, and compliance, including created App Protection and Device Compliance policies.

Applied conditional access rules to detect, prevent and reject foreign access attempts to internal network/resources/services.

Configured and managed Microsoft Defender thread protection looking for malware, suspicious software, viruses, and attacks.

Configured the EOP (Exchange Online Protection), for spam, filtering email, blocked domains, and IPs.

Worked with VMWare for server virtualization, provisioned a lab/test environment to plan and deploy new patches, scripts, or cumulative updates.

Applied filters and other options to move selected data and selected .pst file save format, and choose the mark read/unread option as required.

Cloud Messaging Engineer

11/2017 – 03/2020

Owens Corning, Toledo, OH

Owens Corning is an American company that develops and produces insulation, roofing, and fiberglass composites and related materials and products.

Planned, configured, deployed, and provisioned new Teams environment for new hybrid communications.

Configured Azure AD Connect and ADFS for Active Directory synchronization/Federation with on-prem Active Directory, including test account creation and started a pilot migration.

Installed and configured Exchange Server 2016 provisioning the mailbox role and configured for hybrid deployment.

Configured mail flow transport rules for inbound and outbound emails between Exchange on-prem and EXO.

Utilized Forefront Identity Manager syncing between the multi-forest on-premises organization and Office 365.

Configured Single Sign-On (SSO) and configured two-way forest trust between the on-premises forests using AD FS password sync to allow a seamless user authentication experience.

Set up information barrier polices for SharePoint, Teams, and OneDrive.

Enabled remote mailboxes for Exchange Online, create and set up mailboxes in Exchange on-prem.

Created migration batches in the Office 365 Admin Center.

Used PowerShell to validate migration status and statistics.

Created Knowledge Transfer (KT) documentation with simple procedures and troubleshooting guidelines.

Implemented Exchange Online, Azure AD, including set Autodiscover, policies, mail flow transport rules, and attribute sync.

Planned and deployed licensing services within Office 365, including assign, remove and modified licensing service plans.

Managed Certification of Authority, for self-sign and third-party certificates, configure public certificates for secure mail flow delivering in the environment.

Performed hands-on technical troubleshooting (e.g., migration errors such as failed mailbox moves, and connectivity errors, etc., Active Directory issues, network issues, etc.).

Office 365 Engineer

08/2014 – 11/2017

Sivantos Inc., Piscataway, NJ

Sivantos, Inc. is one of the world’s top manufacturers of hearing aids. Sivantos Group companies serve hearing care professionals globally.

Deployed DAG configuration for Exchange Server 2013 high availability solution, created copies for server distribution.

Remediated poor performance, optimizing Exchange Server 2013 services, mail delivery and indexing.

Followed ITIL best practices for request changes on the servers, including patching, upgrade, rollbacks, and installations.

Deployed and provisioned policies, software, add-ins, updates, and health monitoring with SCCM.

Managed mail flow transport rules for inbound and outbound email flow, monitoring NDR, cleaning task for message queues

Managed DAGs on Exchange Server 2013, including fail-over tasks, validate DB health, mount/dismount DBs using ESEUTIL.

Troubleshot non-deliverable emails using In-Place eDiscovery searches for trace messages.

DLP using In-Place Holds policies.

Implemented VMs (Hyper-V) to test migrations, patching and end user experience.

Enabled Office 365 hybrid environment, validate configurations, connections, policies, and health status before moving Azure AD.

Configured Azure AD connect to sync the Active Directory attributes to the cloud, including passwords (password hash), policies and settings.

Started synchronization of the on-prem AD users/objects to Office365.

Used Hybrid Migration Wizard in the Exchange Admin Console to enable and set up the Exchange Online requirements before migrating mailboxes, policies, and settings.

create batches and move mailboxes to Office 365.

Troubleshot mail flow transport rules applying email filtering, such as spam detector and blocked domains/IPs.

Implemented Microsoft Intune for MDM management on endpoint devices.

Managed user licensing based on groups, policies or users, enabled/disabled licenses using PowerShell.

Enabled Skype-for-Business Online for Office 365 migrated users.

Exchange Administrator

11/2011 – 08/2014

TD Bank, N.A, Cherry Hill, NJ

TD Bank, N.A., is an American national bank and subsidiary of the Canadian multinational Toronto-Dominion Bank.

Managed on-prem Exchange 2010 environment, including mailboxes, databases, transport rules, connectors, and monitor services to ensure continuous functionality.

PowerShell scripts for health checking, monitoring of the services and reporting database utilization.

Administrative tasks associated for maintenance, upgrade and patching for Exchange environment.

Worked with AirWatch mobile device management team to set and check policies for devices and ActiveSync connections.

Added supplementary servers to DAG configuration.

Collaborate on Office 365 deployment for enabling hybrid environment.

Supported end user regarding Outlook connectivity issues, calendar permissions and free/busy status.

Performed scripting and reporting tasks using Power Shell.

Managed client access policy daily Access and Identity Management tasks.

Assigned and reclaim user licenses as needed.

Documented firewall rules, ports, and exceptions for server network rules such as, inbound, and outbound traffic.

Created, solved, and tracked tickets, changes and incident request with Remedy ticketing tool.

IT Systems/Network Administrator 09/2008 – 11/2011

Devon Energy Corporation, Oklahoma City, OKLA

Devon Energy Corporation is an energy company engaged in hydrocarbon exploration in the United States.

Tracked project timelines and documentation of the processes and end results.

Identified and mitigated security issues regarding servers, desktops, and related devices.

Managed access control policies and GPOs for user accounts in Active Directory.

Installed and keep up to date Windows desktop versions, and Servers in 2008R2.

Supported desktop issues for Windows desktop versions.

Collaborated to follow system standards and best practices on Windows Server 2003 and 2008.R2

Coordinated hardware and software failures with the end users.

Migrated to newly fresh desktops machines by 20 a month.

Experience using ticketing system in Altiris and Cherwell.

Managed Active Directory infrastructure, create accounts, groups, and GPOs.

Performed computer installation and operating system configuration in designated networks.

Monitored network status, performance and health using SNMP tools.

Planned, assembled, and installed computer systems in designated networks as per specifications.

Handled on-boarding process for new hires such as assign new machines and train users on IT software.

Handled escalated calls from customers that cannot be resolved by staff members.

Installed and configured IT network components and assisted in the implementation of designed IT network configuration for Tier 1 and Tier 2.

Software/IT Administrator 06/2005 – 09/2008

GEP Worldwide, Clark, NJ

GEP® delivers transformative supply chain solutions that help global enterprises become more agile and resilient, operate more efficiently and effectively, gain competitive advantage, boost profitability

Identified weak process procedures, implement changes by identifying inefficiencies in the tasks.

Tracked timelines for internal IT projects, including surveying, and closures.

Facilitated workshops, meetings, and reviews with end users and stakeholders for enhanced


Optimized digital workflows to deliver more efficient accesses for the staff members this in order to give them accurate updates.

Diagnosed, monitored, and resolved networks and server issues.

Planned/implemented network/ server changes.

Administered SharePoint system.

Managed network devices and fix issues when identified.

Managed and monitored firewalls/switches/routers connectivity and performance.


Bachelors - Systems Engineering - Universidad del valle de Mexico

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