It Operations Security Systems

DAVID L. HAFFNER

**** ******* ****

Cincinnati, OH 45247

513-***-**** *************@*****.***

SUMMARY

A results-oriented IT operations and security professional with experience working with start-ups, non- profits as well as Fortune 50 companies.

Proven experience with development, testing, standardization, implementation, monitoring, troubleshooting, training and delivery of security systems (hardware and software). TECHNICAL SUMMARY

• Network Infrastructure Improvement and Administration

• Splunk Infrastructure Development, Implementation and Administration

• Infrastructure Security, Monitoring, Alerting and Maintenance with various programs such as CrowdStrike, FortiGate, FortiMonitor, NinjaOne, JumpCloud, Okta, Microsoft, Apple, Nagios, OpenNMS, PagerDuty and Synology

• Operating System experience in Linux (Red Hat and Ubuntu), OSX and Windows 2008/2016/10/11

• Linux Administration; Hardware Qualification and some Kernel Development PROFESSIONAL EXPERIENCE

CATHOLIC ANSWERS 2022-Present

IT Infrastructure Manager

Projects include:

• Continuously working to increase security in balance with connectivity, performance and efficiency of both business and radio studio networks, down to individual user systems, leading to increased safety and productivity of all staff, stakeholders, and the company as a whole

• Acting as primary contact between IT related service providers, management and employees

• Planning, pricing, proposing and implementing various improvement projects for the company, including a complete update of the radio studio which included: Ø Mapping and evaluating existing equipment, network and cabling Ø Developing a plan for improvements in coordination with studio team and management Ø Researching specifications and prices, and proposing entire plan for budget approval Ø Repairing and/or replacing older equipment

Ø Installing high-bandwidth switches internally

Ø Working with vendors to install higher speed external lines Ø Re-cabling and re-mapping the entire studio

Ø Coordinating installation of new dedicated HVAC system

• and resulted in:

Ø An internal and external bandwidth increase of at least 900% on the studio network Ø Significant improvement in network stability and performance for both the business and studio networks internally and externally

Ø Implementation of multiple systems for network visibility, including SNMP port level monitoring of all network devices, servers and systems to provide a comprehensive mechanism for securing, monitoring and troubleshooting, none of which previously existed

• Updating, monitoring and managing services and equipment required for network security

• Securing access and connectivity for remote employees, increasing the footprint across the country

• Maintaining and monitoring company security posture to exceed PCI requirements, including quarterly scans and annual evaluation

• Improving physical facility security and monitoring ability, including installation and monitoring of video surveillance system and implementing individual access codes for building access

• Continuously testing beta and/or new Apple and Microsoft builds for compatibility with existing devices and systems

DAVID L. HAFFNER 513-***-**** Page 2

• Provided password management solutions to users

• Providing overall support for users by maintaining, upgrading, repairing or replacing hardware and software

• Maintaining Polycom phone system, assigning physical, web-based and mobile lines to users SPLUNK 2016 – 2022

Technical Support Engineer Level IV

Projects include:

• Top level support for customers using the platform

• Routinely took on the more complex, difficult and longer running cases that would arise to make sure the customer was able to accomplish what they wanted with the product

• Worked as a liaison between support, engineering and development teams when needed to achieve the same as above

• Built and strengthened customer relationships

FIREEYE, INC / MANDIANT (Mandiant acquired by FireEye in 2014) 2013 – 2016 Operations Engineer as part of Threat Analytics Platform (TAP) team. Projects include:

• Installed and supported miscellaneous instances of Splunk for different teams within the company.

• Daily monitoring of both internal and external client infrastructure using a variety of tools including: Nessus, Graphite, Grafana, OpenNMS, PagerDuty, NMAP.

• Daily reporting of customer impacting issues as provided by team members, in JIRA and Sales Force.

• Security and vulnerability scanning with Nessus to help improve the overall security of TAP services and products in addition to patch and update compliance.

• AWS compliance and audits of configurations for user access, security groups, etc.

• Implemented Nagios for monitoring of internal and external client systems.

• Replace Nagios with OpenNMS and integrated it with PagerDuty, allowing for more effective and timely monitoring and alerting.

• Helped to implement, maintain and monitor additional infrastructure systems and programs such as SecurityMonkey, providing greater visibility into and security of the various environments.

• Helped with transitioning from Gen 2 to Gen 3 infrastructure for internal and external customer environments.

• Gen 2 system implementation and growth in AWS.

• Helped to develop, troubleshoot and finalize configuration files needed for monitoring and alerting.

• Troubleshooting of TAP systems as needed.

• Worked on miscellaneous Ansible playbooks related to monitoring.

• User management for TAP UI instances.

• Entrusted with Export Controlled and highly sensitive data. TATA CONSULTANCY SERVICES -100% dedicated time to General Electric contract 2009 – 2013 Full Time Contractor

Dedicated exclusively to the General Electric IT Risk Solutions Team, working as the lead infrastructure team member from the proof-of-concept / testing phase through full international implementation of Splunk for Operational Intelligence, Log Management, Application Management, Security, Compliance and Web Analytics. Projects include:

• Successfully managed the flow of information between TATA, GE and Splunk.

• Entrusted with Export Controlled and highly sensitive data at both GE and TATA.

• Developed an excellent knowledge of Splunk, its implementation and its use in a global setting.

• Improved the Splunk infrastructure’s performance, dependability and reliability such that it was moved from a testing / proof-of-concept to a fully implemented, vital tool for the GE CIRT Team, as well as many other groups within GE.

DAVID L. HAFFNER 513-***-**** Page 3

• Primary responsible for infrastructure expansion, which grew from 4 indexers to over 100 (plus search heads) in multiple business units and geographies.

• Project Manager for three separate upgrade and expansion initiatives within GE’s Splunk infrastructure which included:

Ø Implementation of Search Head pooling and mounted bundles. Ø Converting from underpowered hardware to our current standard. Ø Converting Symantec SIM machines to Splunk indexers. Ø Coordinating and installing indexers into additional business units.

• Successfully managed all upgrades.

• Successfully converted multiple Solaris x4500 (Thumpers) to HP DL580s, including data migrations and/or transfers.

• Developed the hardware and configuration standards for GE’s Splunk environment.

• Work cooperatively with Splunk support on many troubleshooting issues, learning more each time and reducing dependence on support’s services.

• Splunk Beta Tester.

• Developed an excellent knowledge base of Splunk’s back end and inner workings.

• Integral and efficient team and independent worker.

• Efficiently and effectively fulfill GE’s internal Splunk customer requirements and resolve troubleshooting.

• Trained new team members on Splunk.

MCAFEE, INC / RECONNEX (Reconnex acquired by McAfee 2008) (Santa Clara, California) 2006 – 2009 Linux, Lab and Network Administrator / Engineering Operations Manager

• Administered the largest computer lab in McAfee for Network DLP engineering R&D (275+ computer servers).

• Increased network connectivity speed by 100%.

• Enhanced the stability and reliability to reduce system downtime approximately 75%.

• Installed and configured a full KVM-over-IP with power cycling capabilities to provide a self-sufficient environment for Engineers and Developers increasing system security.

• Installed and maintained 15+ VMware servers for reallocation of hardware, reducing costs and cost avoidance of $75,000+ within 6 months.

• Created and packaged of final release image for new product and upgrade releases prior to release to the field.

• Primary point of contact for troubleshooting hardware and software installation for manufacturing, sales, engineering, and contract manufacturer groups.

• Trained McAfee employees on the building and imaging processes of Reconnex’s Network DLP products post acquisition.

• Conducted research, evaluation and testing of new hardware options for compatibility.

• Revised kernels to improve functionality and compatibility by adding new drivers as hardware requirements change.

• Physically organized racks and cables for easier access to computer servers.

• Under Reconnex Corporation:

Ø Initially assembled and configured hardware, installed software and shipped product before transferring this process to a contract manufacturer. Ø Oversaw all maintenance and upgrades of HVAC, power, Telecom and other equipment. NEW CONCEPTS IN ONLINE MERCHANDISING (Chicago, Illinois) 2005 – 2006 Owner, Entrepreneur

• Designed website for direct ship products.

FIFTH THIRD BANK (Cincinnati, Ohio) 2002 – 2005

Office Manager

• Managed daily branch operations to Federal and bank standards. DAVID L. HAFFNER 513-***-**** Page 4

• Developed and implemented standard operating procedures to improve cycle time for weekly ATM balancing by 30%.

• Key contact for current and new Spanish-speaking clients.

• Participant in the development of Spanish marketing campaigns.

• Maintained ATM, computer and video surveillance equipment. INLINGUA & UNIVERISIDAD De CARACAS (Caracas, Venezuela) 2000 – 2002 Professor of English as a Second Language (ESL)

• Taught English to native Spanish-speaking students in a university setting.

• Also taught English to individual and group corporate associates for specific business and technical needs.

• Achieved conversational level proficiency in Spanish language. ST. ALOYSIUS, ST. JAMES, LITTLE FLOWER, & SACRED HEART PARISHES and MILFORD SPIRITUAL CENTER

(Cincinnati, Ohio) 1992 – 2000

Youth Director

• Developed, organized and implemented youth meetings, retreats and various social activities for groups of 150+.

• Analyzed and improved adult training program for youth leaders, which was adopted by various dioceses nationwide.

ADDITIONAL EXPERIENCE

UNITED STATES MARINE CORPS

Intelligence / Communications Center Operator

• Coded and decoded messages to Secret level of clearance.

• Maintained communications equipment.

• Received top level honors for completion of self-paced training in less than 180 days.

• Honorable Discharge upon completion of service.

EDUCATION

Bachelor of Arts

Xavier University (Cincinnati, Ohio)

VOLUNTARY AND OTHER ACTIVITIES

Licensed emergency communication responder in Amateur Radio Emergency Services (ARES) & Radio Amateur Civil Emergency Service (RACES)

Severe Weather Spotter - National Weather Service

Leader - Children’s International Summer Village

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