Dennis Guerra
Ennis,United States
Summary
Experienced professional with a degree and certifications in ITIL, CompTIA A+, and CompTIA Project+. Skilled in providing technical support for software, hardware, client/server, and networking systems. Dedicated IAM Security and Azure administrator focused on safeguarding organizations' data and access controls against cyber threats.
Overview
13
13
years of professional experience
1
1
Certification
Work History
Senior Operations Analyst
Nasdaq
12.2022 - Current
- Works with control owners in the remediation of deficiencies
- Developing mapping controls to policies, procedures, and processes and testing those controls to ensure adequate coverage
- Evaluate IT general controls (ITGC) including user access PIM Access control Researching and developing policies, procedures, and processes as the threat landscape and the organization change
- Conducting user access reviews on critical systems and data access
- Building laptops with pre-built and staging scripts
- Remediating of Security and vulnerabilities breaches in Azure and 365 Security Implementing, and creating Storage, computing, identity, security, and governance within the organization Building Microsoft Azure virtual desktop machines for developers and contractors
- Maintain a database for tracking and administration
- Providing research and data gathering for yearly SOC2 effort
- Implemented DKIM signing for domains in 365 Security Blocked all legacy authentication Enabled Data-verse auditing Blocked and restricted HTTP connectors in 365 Required access controls for mobile devices connecting to Office 365 Ensured all devices connecting to Office 365 are encrypted Bulk email detection actioned set to JMF or Quarantine Implemented MTA-STS for inbound emails
- Configured SMTP TLS reporting for inbound emails Configured Mailboxes for unified audit logging Restricted connectors approval required by (Nasdaq) Password policies aligned with the newest recommendation Enabled fraudulent MFA Authentication approvals Reviewed and modified Least privilege policy Created and enabled policy to ensure devices connecting to 365 are patched and up to date
- Created policy to Block all devices that are not update or patch Reviewing policies and procedures with management
IT Solutions Analyst (Identity & Access Control Analyst)
Dallas Fort Worth International Airport (DFW)
02.2019 - 11.2022
- Responsible for the day-to-day administration of the IAM system Evaluates IT general controls (ITGC) including user access Administered user accounts and access privileges in the organization's identity management system
- Worked closely with the IAM team to ensure that the right people have access to the right resources
- Responsible for the day-to-day administration of the IAM system
- Involved in troubleshooting and resolving IAM issues.Participated in IAM projects and initiatives
- Worked with internal customers, business analysts, and application teams to understand access requirements
- Maintained documentation for the IAM program
- Participated in IAM audits and reviewed access control reports to identify potential risks
- Provided training to new users on the IAM system
- Updated and maintained the IAM system according to changes in the organization's business needs.
Snr. Technical Analyst
Southwest Airlines
04.2015 - 10.2018
- Supported Amadeus application in all Stations
- Kept all user issues well documented to completion using ServiceNow
- Ensured that all defective hardware was replaced, and warranty honored with Dell
- Ensured all customers were contacted and satisfied with the resolution of the issue
- Supported agents via CS2 Administration
- Supporting ATP boarding & bag Tag printer at all stations
- Supported agents with boarding or closing flights via the SAAS application
- Worked on all kiosks via Kiosk Admin software
- Serves as a subject matter expert in IT Asset Management
- Develop and maintain a strong professional relationship with our internal customers
- Dell Hardware Certified is used to RMA and order parts from the manufacturer
- Used Active Directory to create, user accounts, and also move and place computers in Organizational Unit
- Exchange Administrator - used to create email accounts, and delete, restore, and modify accounts
- Supported all Ground Operations users at all stations, - conveyor systems and ground-to-air radio systems PC scanners ensuring resolution within 4 hours
- Supported all In-flight (flight attendants) employees - iPad, Training systems, in-flight WIFI, and other systems while in-flight
- Proven ability to build, cultivate, and promote strong relationships with internal customers at all levels of the organization, as well as with IT counterparts, business partners, and external groups
- AirWatch Admin - Used to add and maintain the Apple devices for Pilots' electronic flight bags and Flight attendants' iPads
- Strong organizational, planning, and analytical skills
- MobiControl Admin - Used to add scanners at Baggage offices at all Stations
- SCCM Admin is used to install and modify packages for all PC systems on the domain
- Deployment Tech - deployed Windows images to all PCs
- Kiosk via network boot PXE
- Performed Server reboots weekly.
Senior Service Desk Analyst
Hess Corporation
01.2014 - 03.2015
- Leading and mentoring a team of IT support analysts, ensuring their productivity is balanced based on workload, skillset, and fairness
- Monitoring trends within the team to identify issues, resolve and suggest measures to be put in place for permanent resolution
- Served as a first escalation point for technical/managerial queries and engage in hands on customer facing IT Support when workloads are high
- Ensured SLA's are met and issues are resolved efficiently within the team by delegating tasks, taking ownership of problems, and proactively communicating with customers where necessary
- Developed and report KPI metrics and Management Reports to demonstrate the Service Desk is operating within agreed SLA targets
- Ensured we are adhering to best practices and continuing improving
- Assisted in the implementation of the service desk improvement plan Assisted in the evolution of the service desk by aligning it with ITIL v4
Senior Service Desk Analyst (Lead)
Baker Hughes
02.2012 - 11.2014
Education
Bachelor's degree - Computer and Information Systems Security/Information Assurance
Western Governors University
12.2024
Associate's degree - Information Technology
University of Phoenix
01.2010
Skills
- Security Frameworks: ISO 27001, NIST, FAIR, OWASP
- Operating Systems: Windows, Linux, Unix, macOS
- Certifications: Systems Security Certified Practitioner (SSCP)
- CompTIA Security Certified
- CompTIA Network Certified
- CompTIA Project Certified
Certification
- CompTIA IT Operations Specialist - CIOS Stackable Certification
- CompTIA Secure Infrastructure Specialist - CSIS Stackable Certification
- Associate of ISC2
- Change Management
- CompTIA Network+ ce Certification
Personal Information
Title: Cybersecurity / Senior Ops Analyst
Timeline
Senior Operations Analyst
Nasdaq
12.2022 - Current
IT Solutions Analyst (Identity & Access Control Analyst)
Dallas Fort Worth International Airport (DFW)
02.2019 - 11.2022
Snr. Technical Analyst
Southwest Airlines
04.2015 - 10.2018
Senior Service Desk Analyst
Hess Corporation
01.2014 - 03.2015
Senior Service Desk Analyst (Lead)
Baker Hughes
02.2012 - 11.2014
Bachelor's degree - Computer and Information Systems Security/Information Assurance
Western Governors University
Associate's degree - Information Technology
University of Phoenix
- CompTIA IT Operations Specialist - CIOS Stackable Certification
- CompTIA Secure Infrastructure Specialist - CSIS Stackable Certification
- Associate of ISC2
- Change Management
- CompTIA Network+ ce Certification
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