Daniel Destefano

Daniel Destefano Email and Phone Number

M365 Operations Engineer @ Nomura
Tappan, NY, US
Daniel Destefano's Location
Tappan, New York, United States, United States
Daniel Destefano's Contact Details
About Daniel Destefano

Daniel Destefano is a M365 Operations Engineer at Nomura. He possess expertise in active directory, data center, dhcp, dns, group policy and 3 more skills. Colleagues describe him as "Hiring Dan on our team was a relief, especially because it allowed me to focus on my roles/responsibilities as Vice President. His vast knowledge, skills, and passion greatly impacted the influx of new technology and our implementation of systems and strategies- which streamlined, maximized efficiency, and best stabilized our technical infrastructure. An additional aspect of such a valuable employee as Dan is not only his modesty to admit when he needs to research something further, but the next day you can count on him being an expert. I would hire/work with Dan again and recommend hiring Dan for any other employer.", "I went to Computer Learning Centers with Dan. He was very knowledgable and took school very seriously. I have also known Dan for many years after school and he has a passion and aptitude that I think is unmatched in other IT professionals that I know.", and "Daniel was the instructor for the Exchange 2007 class I took and he was one of the most knowledgeable people I had ever met for Exchange. He understood the material at a level much higher than needed to teach the class, and it was apparent he has worked Exchange for many years and has done extensive reading on the product."

Daniel Destefano's Current Company Details
Nomura

Nomura

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M365 Operations Engineer
Tappan, NY, US
Website:
nomura.com
Employees:
15775
Daniel Destefano Work Experience Details
  • Nomura
    M365 Operations Engineer
    Nomura
    Tappan, Ny, Us
  • Self
    Freelance Trainer
    Self Jun 2009 - Present
    Freelance trainer delivering Microsoft Official Course materials on the Windows Server 2008 and Exchange Server 2007 MCTS/MCITP tracks.
  • Societe Generale
    Senior System Engineer
    Societe Generale Sep 2018 - Apr 2021
    Paris, Fr
    O365 Migration (Americas region) Adapt architecture, processes, documentation, and procedures from Paris HQ region Adapt, document, and deploy Exchange Edge servers in DMZo Create requests to open network firewall/proxy rules for routingo Create custom transport rules and connectors to segregate routing for Americas Plan, prestage, complete, and validate migrations using custom-built “Migration Factory” utility Documentation of migration process and training of staff to execute procedures Regular migration meetings and status updates with all related project teams Manage all project-related changes and coordinate with all associated teamsExchange 2016 on-prem migration (Americas region) Adapt architecture, processes, documentation, and procedures from Paris HQ region Adapt, document, and deploy Exchange 2016 serverso Adapt Paris architecture and build procedures for Americaso Build servers on virtual environment and cut-over all services, including: Mail routing Client-access Journaling rules Decommission Existing Exchange 2010 environment Regular migration meetings and status updates with all related project teams Manage all project-related changes and coordinate with all associated teams General responsibilities Daily “Run-The-Bank" duties including monitoring, troubleshooting, and managing both cloud and on-prem environments, includingo Exchange Onlineo Exchange Edgeo Exchange on-premo Cisco ESA relayso Cisco ESA Internet gateways Manage “Migration Factory” tool:o Collaborate on code updates via GitHubo Adapt utility for Americaso Debugging and troubleshooting code Create, update, adapt, and migrate custom Powershell scripts Create, and coordinate regular change controls Mentor junior administrators
  • Columbia University In The City Of New York
    Lead Systems Engineer
    Columbia University In The City Of New York Mar 2017 - Sep 2018
    New York, Ny, Us
    Lead Exchange engineer for Columbia University Information Technology Responsible for architecting and managing Exchange and messaging infrastructure Planning, architecture, documentation, and deployment of new Exchange 2016 organization in new AD forest AD forest/Exchange organization migration:o Planning and implementation of Quest Migration Manager for Microsoft Exchange and the Client Profile Updating Utilityo Testing and development of migration procedures and custom PowerShell scriptso Documentation of migration process and training of staff to execute procedureso Developed and documented procedures to migrate mail-enabled security groups, conference rooms, and shared mailboxeso Daily migration meetings and status updates with migration team Planning, documentation and testing procedures to migrate the Office of the President from legacy Cyrus e-mail platform to new Exchange 2016 organization Daily management of legacy Exchange 2010 organization and new Exchange 2016 organization, including:o Developing operational scripts for backup, reporting, monitoring, etc.o Standardization of processes Planning migration from legacy Sendmail SMTP gateways to new Proofpoint or Cisco Ironmail platform Planning and testing migration to Office 365 Tier III escalation support Staff mentoring
  • Datapipe, Inc
    Sr. Messaging Engineer
    Datapipe, Inc Jun 2015 - Sep 2016
    London, Gb
    Provided managed messaging services for clients ranging from 1 – 12,000 mailboxes Lead engineer responsible for onboarding of most new clients Lead several Exchange projects including Exchange 2013 migrations, datacenter migrations, Exchange 2013 specialized journaling recipient organization, etc. Managed many disparate products and technologies for message archiving/journaling, perimeter messaging security, load balancing, and monitoring; Including:o Symantec/Veritas Enterprise Vaulto McAfee SaaS Email Protectiono Proofpoint Essentialso Kemp Virtual LoadMaster AWSo Science Logic EM7o Custom in-house Observer monitoring product Supported and migrated environments on several different platforms including physical, proprietary virtual cloud, and Amazon AWS Developed several advanced Powershell scripts including a custom journaling/archiving solution utilizing AWS S3 buckets Created new standards regarding management, migration, documentation, and escalation workflow Provided tier-3 support for all clients, migrations, and integrations
  • International Fidelity Insurance Company
    Sr. Systems Engineer
    International Fidelity Insurance Company Sep 2014 - Dec 2014
    Newark, Nj, Us
    Network review and assessment of all systems including Active Directory, Exchange, storage, data protection, virtualization, enterprise storage consolidation, etc.Planned and began implementation of the following projects: Active Directory redesign and reorganization, including:o New OU and GPO strategy and structureo New Group structure and permissioning strategyo Cleanup of highly-privileged groupso Cleanup of stale objects such as computer and user accounts Planning and implementation of server consolidation strategy using Hyper-V and System Center Decommission Exchange 2003 servers in preparation for migration to Exchange 2013 Redesigned enterprise backup strategy to use disk-to-disk-to-tape and recreated/consolidated all backup jobs using Backup Exec 2010 and multi-drive tape library Began planning upgrade to Backup Exec 2014 Reorganized endpoint protection strategy using McAfee ePO 4.x and began upgrade process to ePO 5.x Reclaim and consolidate storage from various platforms including DAS, SAN, and NAS Migrate/reconfigure e-mail archiving/journaling storage using EMC SourceOne Migrate multiple branch office servers to new hardware using new build processes and permission design Relocate services and decommission legacy servers Assist migration/consolidation to SQL 2014 Day-to-day troubleshooting and remediation of issues relating to storage, backups, Exchange, AD, etc. Took ownership of all Level III escalations
  • Nyse Euronext
    Messaging Consultant
    Nyse Euronext Mar 2010 - Aug 2014
    New York, Ny, Us
     Increased Exchange service uptime to %99%, then further enhanced server uptime to 99.99% with migration to Exchange 2010 Reduced costs and complexity by migrating Exchange storage from SAN to DAS Implemented hybrid of physical and virtual servers Developed multiple PowerShell scripts Message journaling and mailbox archiving using Enterprise Vault IM and web conferencing using OCS/Lync External SMTP gateway and internal relaying using Cisco Ironports Bulk mail using Lyris Top-tier escalation support Exchange monitoring using ENow Mailscape
  • New York Stock Exchange
    Messaging Architect
    New York Stock Exchange Mar 2010 - Aug 2014
    Messaging projects: Exchange 2007 redesign and build-out for migration from Lotus Domino Design and document highly-available Exchange 2007 environment using CCR, SCR, tape backup Capacity planning and stress testing for 5000+ mailbox organization Global deployment including multiple sites in each of U.S., EU, APAC Designed and implemented tiered send/receive-quota mailbox database structure Updated internal/external mail routing strategy and send/receive connectors Developed and documented migration procedures for Exchange 2007/2010 migrations Plan, design and document highly-available Exchange 2010 environment using DAGs, CAAs with hardware load balancers, active/passive datacenter model, and tape backup Multiple datacenter migrations including move of ~2500+ Exchange 2007 mailboxes in one weekend Integration of multiple acquired organizations including those using Postini, hosted Exchange, FOPE, etc. Set up GAL sync using NetSec and cross-forest availability service Migration of Enterprise Vault infrastructure and data to new datacenter Multiple Enterprise Vault upgrades; from 8.x to 9.x and 9.x to 10.x Implement mail routing infrastructure for cloud services Participate in and support Microsoft ExRAP Develop custom PowerShell script to update group memberships based on exports from PeoplesoftGeneral responsibilities and accomplishments: Increased Exchange service uptime to %99%, then further enhanced server uptime to 99.99% with migration to Exchange 2010 Reduced costs and complexity by migrating Exchange storage from SAN to DAS Implemented hybrid of physical and virtual servers
  • Cytec
    Exchange Engineer
    Cytec Sep 2009 - Nov 2009
    Us
    Architecting final stages of Exchange 2007 transition: Create new send and receive connectors for load-balanced external mail routing to interface with Postini Email Security Service using private DNS method Cutover from Exchange 2003 SMTP connectors to Exchange 2007 send and receive connectors Create new receive connectors to allow SMTP private relay on Hub Transport servers and load balance using DNS Roud Robin Create/modify existing DNS records to point to Hub Transport servers using Round Robin Decommission Exchange 2003 servers using multi-step phase-out approach Move all public folder replicas and remaining mailboxes from Exchange 2003 to Exchange 2007 mailbox servers Transition RightFax to Exchange 2007 Tested and preflighted all changes in lab prior to going into production
  • Info-Lution Corporation
    Senior Systems Engineer
    Info-Lution Corporation Mar 2006 - Mar 2007
    - Managed Solution Provider for multiple clients in disparate industries including: Electronics Manufacturing, Home Health Services, Insurance Agencies, Building Supply, Not-For-Profit, Non-Destructive Testing and Industrial Imaging, Building and HVAC ContractingDesigned, planned and implemented end-to-end systems and network infrastructures including:- Microsoft Active Directory 2003-2000, Microsoft Exchange 2003-2000, Microsoft SBS 2003- Developed data protection solutions using Symantec Backup Exec 11d-8.6 and Windows Backup- Provided user remote access via Microsoft VPN, Outlook Web Access, RDP/WebRDP- Implemented patch management via Microsoft SUS/WSUS/WSUS v2- Anti-malware protection using Symantec AntiVirus 7.6-10.2 and Symantec Mail Security for Microsoft Exchange v5xxx- Set up application servers for clients’ vertical applications using Windows 2003/2000 Terminal Services and RDP/RDP6- Provided branch/home office connectivity using static VPN tunnels on Netgear hardware- Set up mobile user connectivity via Windows Mobile 5/MSFP mobile devices and Exchange 2003 SP2 synchronization- Set up roaming profiles and home folders with My Documents redirection for user environment continuity- Used Active Directory GPOs to control network environment and software deploymentPrepared operation and security baselines for internal and external use:- Limited User Privileges applied to all internal and external users- Configure non-conformist applications to work in Limited User Privileges environments- Developed operational policies and procedures for internal and external use including:- Naming conventions and password policies- Incoming/departing users- Server builds- Desktop builds- Systems / network auditing- Regular systems maintenance- Provided top-level escalation support for all systems, network and desktop engineering issues- Provided client consultation to assist with technology decisions and strategy
  • Iag Research
    Windows Administrator
    Iag Research Aug 2004 - Aug 2005
    Us
    Responsibilities included:- Planned and implemented project to reorganize and redistribute network services by repurposing 80% of existing LAN servers including:- Increasing network printer availability from ~60% to ~99% by migrating printers to MSCS cluster- Planning and implementing Exchange server migration to MSCS cluster- Redistributing domain controllers, FSMO roles, DNS, WINS, DHCP, Symantec AntiVirus and Ghost services and departmental applications to increase availability and fault-tolerance- Created baseline and departmental client PC images, software installation sets, inventory management and application deployment using Symantec Ghost 7.5 - 9.0 and AD GPOs- Upgraded/migrated all servers and clients from Symantec AntiVirus 7.6 to 9.0 and reconfigured SAV servers- Active Directory administration, design, implementation, troubleshooting and daily monitoring- Proposed and created test lab for technology evaluation, pre-staging and piloting- Proposed and began implementing new security procedures including:- Removing local administrator privileges from all users, including IT staff- Requiring more frequent password changes and more stringent requirements- Re-training users on proper security procedures- Implementing desktop lockdown using GPOs- Created/edited network documentation including AD structure, GPO structure, SAV settings, Ghost settings, desktop installation configuration, network layout using Excel, Word and Visio- Evaluated various helpdesk systems, inventory management software, client deployment systems, etc. in test lab- Desktop and user support and troubleshooting using Windows Messenger, Remote Desktop and VNC
  • Winmar Enterprises
    Systems Administrator
    Winmar Enterprises Apr 2001 - Jun 2003
     User support and training for Windows 95 - XP and MacOS 8.6 - X 10.2 Network administration, design, troubleshooting, maintenance, implementation and organization Directly advising V.P. of Technological Services and upper management Administration of messaging systems: Exchange 5.5 and Openwave Post Office Administration of backup strategy using Computer Associates’ ARCserveIT (versions 6.6 – 2000) and Veritas Backup Exec (versions 8.6 – 9.0), which included regular data archiving in compliance with client contracts Proposal, planning and implementation of departmental and network infrastructure reconfiguration: Consolidation of multiple workgroups into a single NT4 domain and subsequent upgrade to Windows 2000 and Active Directory Implementation of DNS, WINS, user home directories, corporate anti-virus protection, remote access, disk imaging, VLANs, DMZ, DHCP Advised about software compliance and migration to corporate software licensing Utilization of GPOs and NT/9x policies for security, desktop consistency and application controlEducation6/2000 - 1/2001:Computer Learning Centers Inc. Paramus, New Jersey Completed course in Network Engineering and Management (emphasis on Windows 2000 and Active Directory) Graduated with 4.0 Grade-Point Average and Suma Cum Laude honors Obtained certificates for Perfect Attendance and Peer Tutoring After school technical assistance and network administration

Daniel Destefano Skills

Active Directory Data Center Dhcp Dns Group Policy Microsoft Exchange Security Servers

Daniel Destefano Education Details

  • Computer Learning Centers, Inc
    Computer Learning Centers, Inc
    Network Engineering And Management

Frequently Asked Questions about Daniel Destefano

What company does Daniel Destefano work for?

Daniel Destefano works for Nomura

What is Daniel Destefano's role at the current company?

Daniel Destefano's current role is M365 Operations Engineer.

What is Daniel Destefano's email address?

Daniel Destefano's email address is da****@****hoo.com

What schools did Daniel Destefano attend?

Daniel Destefano attended Computer Learning Centers, Inc.

What skills is Daniel Destefano known for?

Daniel Destefano has skills like Active Directory, Data Center, Dhcp, Dns, Group Policy, Microsoft Exchange, Security, Servers.

Who are Daniel Destefano's colleagues?

Daniel Destefano's colleagues are Ruchir Mashru, Passawan Pakdee, Jasmine Gao, Anish Shah, Cfa, Jimit Parikh, Ravindra Sawant, Sam Maybank.

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