Sarah Martinez
Baltimore,MD
Summary
Dedicated information technician with over 8 years of expertise in cybersecurity, system administration and IT operations. Focused and driven professional with a proven track record in developing and maintaining security standards. Skilled at troubleshooting, communication and collaboration. Active Top Secret/SCI Clearance with CI Poly.
Overview
8
8
years of professional experience
Work History
Lead System Engineer & Network Analyst
US NAVY- CYBER DEFENSE ACTIVITY-64
03.2020 - 04.2023
- Oversaw the installation and maintenance of team's deployable kit network architecture and infrastructure
- Experienced with advanced Deployment Mission Support Systems, to include Splunk SIEM and host collection tools
- Provided collection and system analytics covering in-depth IT architectures of over 3k+ endpoints and servers resulting in the collection of 300TB+ data
- Deployed with United States Marine Corps (USMC) Cyber Protection Team (CPT) in support of a named hunt forward operation (HFO) to provide network and infrastructure support
- Researched, developed, and reported findings of anomalous network activity
- Traveled worldwide to customer sites to perform defensive cyber operations, collaborated and coordinated with both the mission partner and the USMC CPT mission elements (MEs)
- Effectively used embedded intelligence support to corroborate findings and to determine event significance
- Liaised with rear element to support split-based operations (SBO)
- Responded to and submitted requests for information (RFIs)
- Engineered configuration and management of audit collection logs across multiple environments using security information and event management (SIEM) tools, to include Splunk and Elasticsearch
- Trained five personnel on installation, operation, configuration maintenance, and testing for team's kit and tool configuration covering multiple secure operating system enclaves
- As a Network Analyst, used network security tools like Wireshark, NMAP, Stenographer, and Splunk to identify adverse network trends, anomalous traffic, and potential emerging threats or malicious cyberspace activity
- Generated tickets and collaborated with other analyst resulting in the discovery of three malicious files attributed to an adversary Advanced Persistent Threat
- Balanced technical skills with applicable experience to provide advice, guidance and assistance on a wide range of complex cybersecurity issues
- Continually worked to identify threats, enhance interoperability and strengthen defensive cyber capabilities
- Conducted vulnerability assessment and penetration test, collaborating with international partners resulting in the enhancement of the Tactics, Techniques and Procedures (TTPs) profile of targeted Advanced Persistent Threats (APTs)
- Temporary Assigned to Cyber National Mission Force (CNMF) Battle Watch
- Maintained daily operational oversight over CNMF operations and served as single point for command and control to CNMF Commander
- Prepared daily briefs and mission reports for CNMF Commander regarding ongoing missions
- Led 8 joint-service members in the management of CNMF daily operations
- Managed 80 missions for joint-service teams spanning 5 Areas of Responsibility (AORs) across 3 geographically separated commands
- Streamlined troubleshooting processes to improve system support and enhance communication between support team and end-users.
- Continually research cybersecurity trends and novel attacks to incorporate and develop new methods of threat hunting.
- Completed software updates and assessed security patches for optimized computer use.
Communication Watch Officer (CWO)/ Assistant Information Security System Manager (A-ISSM)
US NAVY- USS MAHAN (DDG 72)
09.2015 - 03.2020
- Managed advance network architecture with multiple computer operating system (OS) platforms across the Department of Defense Information Network (DoDIN) infrastructure
- Experience with Windows, Linux and Windows Server 2008, 2012 and 2016.
- Conducted security audits on IT infrastructure and policies, including firewalls, access management, and user authentication to build risk mitigation and apply active defense system hardening protection measures
- Supervised seven personnel in the operation and maintenance of 50 servers, eight network switches, five routers, and 151 workstations
- Managed the completion of more than 7,000 hours of maintenance to reduce network issues and latency
- Secured and managed afloat network infrastructure, supporting over 300 users
- Ensured network security through the implementation of security tools and protocols.
- Completed software updates and assessed security patches for optimized network use.
- Managed response, triage, and escalation of cybersecurity incidents related to user access, security breaches, and user privacy and created documentation to minimize future issues
- Maintained accurate documentation of security events, incidents response activities, and network configuration management
- Provided yearly cyber awareness training and oversaw account management for Naval ship network
- Assisted in the information security training and awareness program
- Oversaw the installation of CANES during availability yard period and completed systems accreditation needed to reestablish authorization to operate (ATO)
- Lead IT division in successfully passing ship cyber security inspection.
Education
Associate of Science - Cybersecurity
Howard Community College, HCC
Columbia, MD12.2024
Bachelor of Arts - Civil Leadership, Psychology
The City College of New York, CUNY
New York, NY02.2014
Skills
- Defensive Cyber Operator
- Senior Job Qualification Record (JQR) Infrastructure
- Basic JQR Network Analyst
- Respected and reliable professional
- Experienced at accomplishing missions in joint environment
- Cyber Threat Emulation
- Active Directory
- Public Key Infrastructure
- Network Fundamentals including enumeration, topology, TCP/IP protocols
- Vulnerability Assessment
- Application Security
Professional Development
- Navy School: IT “A” School
- Navy School: System Administrator
- Navy School: Consolidated Afloat Networks and Enterprise Services (CANES) Administrator
- Navy Training: Intermediate Cyber Core
- Splunk Fundamentals 1 & 2
- Splunk Enterprise Cluster Administration
- Splunk Enterprise Data & System Administration
- Architecting Splunk Enterprise Deployments
Awards
- Recognized by the Cyber National Mission Force (CNMF) Commanding General, Major General Hartman, for HFO accomplishments.
- United States Navy & Marine Corps Achievement Medal (2018, 2020, 2022, 2023).
Timeline
Lead System Engineer & Network Analyst
US NAVY- CYBER DEFENSE ACTIVITY-64
03.2020 - 04.2023
Communication Watch Officer (CWO)/ Assistant Information Security System Manager (A-ISSM)
US NAVY- USS MAHAN (DDG 72)
09.2015 - 03.2020
Associate of Science - Cybersecurity
Howard Community College, HCC
Bachelor of Arts - Civil Leadership, Psychology
The City College of New York, CUNY
Similar Profiles
Austin TribouletAustin Triboulet
Navy Cyber Defense Team Lead /Leading Chief Petty Officer at Navy Cyber Defense Operations CommandNavy Cyber Defense Team Lead /Leading Chief Petty Officer at Navy Cyber Defense Operations Command
Jamia BoboJamia Bobo
Information Systems Technician at Navy Cyber Defense Operations CommandInformation Systems Technician at Navy Cyber Defense Operations Command
TAMI L MOTICHEKTAMI L MOTICHEK
Cyber Protection Team Analyst at Navy Cyber Defense Operations CommandCyber Protection Team Analyst at Navy Cyber Defense Operations Command