Active Directory Support

Valentine Stubbs

Senior Systems Administrator / DevOps

Infrastructure, systems deployment, maintenance, support

I am experienced in systems, networking, database, data warehousing, and data centre administration. I have the senior technical hand’s on management of Windows series of servers, senior administration of UNIX and Linux systems, and been SME on operational systems for many years. I don't need supervision; just clear definition of the end goal. I know my way around small, medium, and corporate environment data centers. I am equally comfortable and confident in my abilities in small or large teams, as a team member, or in a team leadership role. I have the skills, for both current and legacy technology. I also have much experience assisting people with desktop connectivity and operating problems. Have extensive experience with voice, data via network and RF.

HIGHLIGHTS

•Ensure IT systems operate reliably to meet needs of production pipeline

•Administration and support of Linux, Windows and Macintosh

•Experienced in both hardware and software troubleshooting

•Accustomed with maintaining Active Directory, NIS, and SSSD

•Maintain existing network and evolve where necessary

•Design and deploy servers and storage systems for production and testing

•Provide support and troubleshooting as they come up on a day-to-day basis

•Produce documentation of IT processes and procedures

•Daily experience training and assisting users where necessary

•Offer input to work towards making a more robust technical infrastructure

•Available after hours and weekends when required by production

•Comfortable in an environment with Linux, Windows and Macintosh support

•Comfortable in managing very large 900+ server farm

•Used to working independently, with a self-directed personality

•Have familiarity with enterprise storage servers – Isilon, Nexentia, Blue Arc and HP storage

•Hand on skills with: Active Directory, DHCP, DNS, NFS, CIFS/Samba, PXE

•Experience with HP and Extreme and Cisco networks switching equipment

•In depth understanding of enterprise level switch hardware, in a multiple VLAN network

•Have extensive configuration experience with VOIP systems, Asterisk, CISCO, and Nortel

•Can read and write Python, Bash, Perl and C Shell scripting as required

•Have implemented several wireless networks, both WiFi and RF voice and RF data

•Deployment and maintenance experience with SIP (session initiation protocol)

•Deployment customization, and maintenance of VOIP (voice over IP)

•Strong skills in planning, deploying and administrating of VMware

•Experienced with using Nagios, Cacti, Zabbix, Graylog, Ganglia, and others

•Have recommended Ansible as an easier yet scalable deployment

•Experience with Puppet and Ansible.

•Experience in deploying, and configuring AWS

•Extensive storage experience both SAN and NAS

AREAS OF EXPERTISE

SQL Servers, mysql, mssql, postscript

20 years

Scripting shell, python, etc

30 years

*NIX operating systems

30 years

Storage Networks

15 years

Window server, desktop

20 years

Systems Support

20 years

Mac OS

10 years

Early problem detection

20 year

Network switches, routers

30 years

Cross Platform integration

20 years

VMware all versions to current

15 years

System Automation script, puppet, chef

15 years

Wireless Networks

15 years

Infrastructure planning, implementation

15 years

Oracle, all versions to current

20 years

Systems Documentation

10 years

VOIP – via LAN, WiFi, and RF

10 years

PROFESSIONAL EXPERIENCE

System Administrator: Mr. X Inc. October 2014 to August 2016

Responsible for the daily maintenance and development of network infrastructure and system administration. Maintaining hardware, virtual servers and constant server operations monitoring to ensure a robust systems environment. As the Senior Systems Administrator, on a primary application platform of Linux, (any distribution) with a substantial proportion of Mac OS X and Windows 7 & 10 machines. Willing and able to join a team of talented Systems Administrators supporting a VFX production team, some or all of my daily tasks outlined below:

My Responsibilities:

•To act as a Linux / Unix Senior Systems Administrator (Hardware / Software)

•Provide technical support and troubleshooting for commercial and custom applications (Linux)

•Update, upgrade backend server services, security, and applying regular patches

•Maintain and/or improve the Windows and Linux server automation and workflow

•Windows/Linux Security and log-on script creation, that supports a single sign on environment

•Oversee and assign tasks to System Support Technician and provide training

•Managing the execution of storage administration (cleanup, rsync’s etc), infrastructure maintenance of all Linux servers, general I.T. support, and maintenance duties

•Software license tracking and reporting, and updating as license requirements change

•Monitor network connectivity, bandwidth, security and troubleshoot where required

•Responsible for studio-wide backups, archiving and restores

•Have strong understanding of AD, DHCP, DNS, NFS, CIFS, NIS, PXE

•Performing general system administration for account set up with LDAP server and mail server

•Create and maintain documentation for Support Technicians in an easy to access manner

•Experienced with deployment AWS, through Ansible and Puppet.

•Maintain the existing Puppet installation and rollout, and demonstrated Ansible

•Contribute towards overall server and system standards, planning, and expansion

•Develop and recommend innovative, and automated, approaches for system admin tasks

•Doing firewall and switch configuration when needed

•Ensure System Support Technician is up to date with allocated tasks

My Detailed Daily Operations:

•Regular system monitoring, verifying the availability of server resources, systems

•Responsible for regular security monitoring, adding or updating user access rights as needed

•Perform daily backup operations, ensuring all required file system data was archived

•User account creation, deletion as per requirements in all systems (FTP, Email, AD, VPN)

•Identify problems, propose and/or implement solutions, to improve system performance

•Make use of open source solutions that will make system management simpler

•Respond to tickets, or user emails, phone call regarding system problems and resolve

•Maintain user accessible documentation so users can self solve some question (Wikipedia style)

•Monitor, storage space, and make recommendations and/or implement additional storage

•Have an independent problem, and self directed personality

•Strong experience with Shotgun software

•Perform monitor and projector colour calibration as required

•I have extensive knowledge of render farm monitoring or "render wrangling"

•Mac OS and Windows application deployment and integration within a Linux network

•Expert with Linux installation and application deployment (PXE, puppet, multiple-shell)

•Proficient in setting up and maintaining of a Linux/Windows/Mac co-environment

•Write or update scripts, that will make the system environment more user friendly

Senior System Administrator: Guru Animation Studios. June 2013 to October 2014

I was responsible for maintaining and developing network infrastructure and system administration with support from the System Support. Maintain servers and daily server operations to ensure 100% uptime.

My Responsibilities:

•Maintains and updates Exchange Mail, Spam services and Active Directory

•Update, upgrade backend server services, security, and applying regular patches

•Windows and Linux server automation and workflow

•Windows/Linux Security and log-on script creation

•Oversee and assign tasks to System Support Technician and provide training

•Software license tracking and reporting

•Monitor network connectivity and troubleshoot where required

•Responsible for studio-wide backups and restores

•Create and maintain documentation for System Support Technician

•Contribute towards overall server and system standards

•Develop and recommend innovative, and automated, approaches for system admin tasks

•Ensure System Support Technician is up to date with allocated tasks

My Detailed Daily Operations:

•Daily system monitoring, verifying the availability of server resources, systems and key processes. And responsible for regular security monitoring

•Perform daily backup operations, ensuring all required file systems and systems data are successfully backed up to the appropriate media

•User account creation, change and deletion per request in all systems (FTP, Email, AD, VPN )

•Maintain working order and provide optimizations for the Linux and Windows based render farm at all times 68 Linux and 100+ windows systems

•Work with Technical Director’s department to track metrics and optimize workflow

•Monitor software license tracking and reporting

•Apply server OS patches and upgrades on regular basis, and upgrade administrative tools

•Configure / add new services as necessary

•Perform periodic performance reporting to support capacity planning

Senior Consultant: CGI Mississauga Data Centre, System/Network Administration 2001 to 2012

•Installed configured 450 VLAN's, one or more for each client in the data centre

•Installed Provider 1 as the data centre central firewall management tool

•Installed, configured, and administrated 800 UNIX (Solaris, HP), Windows Servers, & Linux

•Maintained and managed 3 large-scale data centre operations

•Installed, configured, and administrated 75 Linux (RHEL, and Centos) for virtualization

•Change and asset management administrator

•Responsible for Service Level Agreements of data centre infrastructure

•Migration specialist transitioning 14 systems and data to new upgraded environments

•Had senior responsibility for the 86 Oracle environments on both Linux and SunOS

•Managed secure LDAP and Active Directory systems, for multiple DC clients

•Implementation and administration of CISCO core switches, Checkpoint and Provider 1

•Administrated 800 MS Windows, UNIX, Linux, (IMAP, POP3, WINS, DNS, NFS, SQL, etc)

•Implemented and maintained corporate security protocols, SUN, Linux, Windows hardening

CGI Projects Summary:

Team Bell, Electronic Services Delivered to the Individual: (ESDI - Ontario Government)

•Designed, administrated, and put into production, a redundant Network and Security system

•Based on Solaris and Windows Servers, Oracle, Cisco, and Checkpoint firewalls

•Installed Oracle HA environments for preproduction and production

•Project Management, hardware and software purchasing, and data centre integration

•Supervised and worked hands on with a team of 25 people over the projects1.5 years

•Ensured full system security hardening, for Solaris, and Windows, ITIL standards

Royal Sun Assurance:

•Moved 85 - 95% of their servers to newly upgraded hosts, to two data centers

•Transitioned existing functionality with zero down time a fully redundant implementation

•Installed configured and transferred data and applications, old to new for 200 hosts

•Upgraded the Oracle environment to a HA

•Upgraded the existing and installed new NETAPP systems

ISERV Datacenter Consolidation:

•Administration of geographically separated data centers

•Upgraded core switches and implemented redundancy

•Upgraded a production Oracle database, from 10.1 to 10.5

Systems Integration & Consulting:

•Installed, and administered new implementations of Checkpoint firewall infrastructure

•Administrator of all, UNIX, Linux, and Windows Servers in the data centre

•Conversion from old Novell corporate network to MS Windows AD running virtual servers

•Incorporated Cisco PIX firewalls as a secondary layer of existing Checkpoint infrastructure

•Implementation of VOIP ( Asterisk and CISCO call manager ) at client sites

Foresters Insurance:

•Implemented a new security infrastructure, Checkpoint firewalls

•Network administrator of all Foresters network expansion

•Implement Identity Minder and a new single-sign-on system (CA)

•System administrator of all Forester’s Windows Servers in the newly expanded data centre

•Administrated Red Hat Linux servers as virtual machine hosts with VMware

•Implemented new NETAPP storage array systems

Tory’s LLP, Project Management:

•Hands on administration, upgrade, and troubleshoot their Active Directory and Exchange

REFERENCES

Available upon request

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