Sr. System Engineer Resume

SUMMARY

20 years overall extensive hands - on experience with Confidential technologies:
Office365 architecture, administration and programming (EWS, ASP.NET, Powershell, Confidential Graph API, C#)
Exchange 2000/2003/2007/2010/2015/2016 (planning, migration, deployment and troubleshooting)
Confidential Lync 2010/2013, Skype for Business 2015 (planning, migration, deployment and troubleshooting)
Active Directory, ADFS, single sign-on, Group Policy, Certificates, authentications, security, Hyper-V virtualization, terminal services/RDS, clustering, network policy server)
Powershell - Advanced
Windows Server 2008 R2, 2012,2016 (planning, deployment, migration and troubleshooting)
System Center Data Protection Manager (DPM), System Center Operation Manager

PROFESSIONAL EXPERIENCE

Sr. System Engineer

Confidential

Design, implement and manage Exchange 2013 infrastructure to accommodate 100k+ mailboxes, with high availability and resiliency across multiple datacenters.
Design and implement hybrid mode with Office 365 and migrate 80k users in the Confidential cloud (Exchange Online)
Design, implement and manage Lync 2013 infrastructure with Enterprise Voice and PBX integration. Upgraded to Skype for Business 2015.
Create Skype for Business hybrid mode and migrate users to Office 365 (Skype for Business online) Administrator of Office 365 cloud environment for Confidential tenant Create advanced PowerShell scripts for managing and monitoring our Exchange environment, Lync 2013/Skype for Business 2015 and Office 365 Programming and managing Office365 and Azure AD using Powershell and ASP.NET/C#/ Graph API

Sr. Exchange System Engineer

Confidential

- Managing Active Directory infrastructure
- Design the Exchange 2010 infrastructure (MBX, HUB, CAS) to accommodate 75k+ mailboxes, with high availability and resiliency - multiple DAGs across multiple datacenters.
- Plan and migrate 77,000 mailboxes from Exchange 2003 to Exchange 2013
- Managing Exchange 2013 environment - 46+ servers
Advanced troubleshooting for transport agents. Support development team in implementing an email client using EWS Create routing transports agents Create advanced PowerShell scripts for managing and monitoring our Exchange environment. Design Lync 2010-2013 environment and migrate 50k users from OCS 2007 R1. 3rd tier escalation support for mail and Lync related issue.

Sr. System Engineer

Confidential

- Asses, analyze and redesign the whole company’s system infrastructure.
- Consolidate and migrate Active Directory domains and upgrade to Windows Server 2008 R2 domain.
- Consolidate and migrate email domains and update to Exchange 2010 SP1. Organize and optimize Exchange databases, create room, equipment and shared mailboxes and calendars. Provide litigation support for email searches.
- Use Confidential best practice for systems monitoring. Analyze and implement System Center Operation Manager for monitoring all systems, applications and services.
- Design and implement a high availability Hyper-V cluster (SAN infrastructure, Windows 2008 R2 cluster and System center Virtual Machine Manager)
- Customize, deploy and implement System Center Service Manager for helpdesk and change control.
- Plan, deploy and maintain a Unified Messaging solution for Voice mail (Exchange 2010 Unified messaging), audio/video conferencing, instant messaging and PBX voice calls (Office Communication Server - OCS).

Sr. System Engineer

Confidential

Provide technical expertise to customers to assess, recommend, implement and maintain/monitor computer systems; design, configure and maintain Confidential Active Directory services implementation and perform Confidential Active Directory design and administration in large-scale, geographically distributed Windows environment; implement and provide third-tier support for Confidential Exchange server, SQL Server, Symantec antivirus, GFI, Veritas, Watchguard and Linux firewalls, Network Monitor and network protocols and other industry standard systems; create and implement system standards and best-practices; diagnose hardware and software problems (HP/Compaq hardware); plan and participate in off-hours service outage upgrades; data backups and disaster recovery operations; enforce system and network security guidelines and procedures; recommend changes to improve systems and network configurations.

System Engineer

Confidential

PSS Premier Services (Active Directory) provides enterprise wide Active Directory support.
Act as an escalation response for technical support. Provide for complex products, including escalated issues, mainly to end users, along with along with developers and corporate customers. Provide support via telephone, written correspondence, and electronic media. Work independently with limited supervision and provide technical training, coaching and mentoring to other engineers. Act as substantial technical resource in certain product areas. Experience with enterprise wide Active Directory (install, deploy, build, config, maintain and troubleshoot) Strong experience with complex and distributed systems Experience reading and troubleshooting network traces using Netmon Support Users and Groups (Trust relationships and domain migration), Security (Certificates, EFS, Kerberos, Time service), Group policies, permissions, profiles, terminal servers, Active Directory (resources, global catalog, LDAP, FSMO), Active directory and File replication, disaster recovery).

Senior System Administrator

Confidential, Seattle WA

Plan, install, configure, troubleshoot and maintain a server farm (Windows 2000/2003 and Linux), web, mail and ftp for multiple domain names, terminal services SQL Server 2000 and mySQL database administration Exchange Server 2000/2003, Confidential CRM, McAfee, wireless network Install, configure and maintain authoritative DNS (internal & external) Network security using Linux (iptables and bash scripting), sniffers and network intrusion detecting system (snort) Using Samba to share resources, NFS, TCP/IP, DNS, VPN Implement backup strategy using Veritas backup, hardware installation and troubleshooting (Dell) Bash, shell and VB scripting, Visual FoxPro programming working knowledge of Bloomberg system and backoffice in a broker/dealer company specialized on Mortgage Backed Securities trading

TECHNICAL SKILLS

System Administration: Office 365 and Azure, Active Directory, Exchange 2013/2016, Lync 2013, Skype for Business 2015, Windows Servers, IIS, TCP/IP, VPN, RRAS, DNS, DHCP, WINS, NPS, Hyper-V, clustering, SAN, security

Software: Powershell, C#, Office365 programming/reporting, Confidential Graph API

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