Top 55 Ccna Jobs in San Antonio, Tx

Senior ISSE (Trellix/HBSS focus)
Amentum —San Antonio, TX
- $145,000 - $175,000 a year
- Overtime
- Microsoft Outlook
- System design
- Windows
- Health savings account
- Employee stock purchase plan
Quick Apply
Principal Unified Communications Engineer
Amentum —San Antonio, TX
- $160,000 - $180,000 a year
- Overtime
- Microsoft Excel
- Microsoft Outlook
- 11+ years
- Health savings account
- Health insurance
Quick Apply
Senior Unified Communications Engineer
Amentum —San Antonio, TX
- $145,000 - $160,000 a year
- Overtime
- Microsoft Outlook
- High school diploma or GED
- Bachelor's degree
- Health savings account
- Health insurance
Quick Apply
Linux Integration and Test Engineer
General Dynamics Mission Systems, Inc —San Antonio, TX
- $132,930 - $143,835 a year
- Full-time
- 6 years
- Customer service
- Master's degree
- 401(k) matching
2d
Network Engineer
Y&L Consulting —San Antonio, TX
- $130,000 - $150,000 a year
- Full-time
- Hybrid work
- Computer science
- Microsoft Excel
- Azure
- Health insurance
- Dental insurance
Quick Apply
Operations Linux System Administrator - Web/DB/Cloud
General Dynamics Mission Systems, Inc —San Antonio, TX
- $111,123 - $120,239 a year
- Full-time
- Azure
- 3 years
- Master's degree
Information Systems Security Officer (ISSO), Network Security, TS/SCI
Data Systems Analysts, Inc. —San Antonio, TX
- $120,000 - $160,000 a year
- Computer science
- Computer Science
- Bachelor of Science
Quick Apply
Local Team Network Administrator
ALEUT FEDERAL LLC —San Antonio, TX
- $88,000 - $93,000 a year
- High school
- Military
- Mid-level
- Disability insurance
- Health insurance
Quick Apply
IT Help Desk Engineer
DOCUmation —San Antonio, TX
- Full-time
- Background check
- 5 years
- Research
System Administrator
Def-Logix, Inc. —San Antonio, TX
- Mid-level
- Office
- Windows
Quick Apply
IS and Cybersecurity Professional - Entry (AFIN Reporting Cell - ESI)
Computer World Services —Lackland AFB, TX
- Full-time
- Bachelor's degree
- Experience equivalent to degree accepted
- Entry level
Network Engineer
Labatt Food Service —San Antonio, TX
- Full-time
- Mid-level
- Office
- Bachelor's degree
Network Engineer
Interclypse, Inc. —San Antonio, TX
- 11+ years
- Linux
- Senior level
- Paid jury duty
- Health savings account
Field Service Engineer 2 - Barstow, Texas
Dell Technologies —San Antonio, TX
- $72,000 - $93,500 a year
- Full-time
- Remote
- 5 years
- Ability to lift 50 pounds
- Senior level
Firewall/Network Security Administrator
SUMARIA SYSTEMS LLC —San Antonio, TX
- Full-time
- 5 years
- High school diploma or GED
- Senior level
Quick Apply
Network Engineer
Govcio LLC —San Antonio, TX
- $115,000 - $125,000 a year
- Full-time
- High school diploma or GED
- Business development
- Analysis skills
Systems Engineer / System Administrator for Managed Service Provider
Straight Edge Technology, Inc. —San Antonio, TX
- $60,000 - $90,000 a year
- Full-time
- Azure
- Computer Science
- Customer service
- Paid parental leave
- Dental insurance
Quick Apply
IT Systems Analyst II/III (Change Management) – Change Manager
Computer World Services —Lackland AFB, TX
- Extended hours
- Mid-level
- Bachelor's degree
- 2 years
Software Cloud Engineer - Junior
San Antonio, TX
- Computer science
- Azure
- Computer Science
Network Operations Center Technician I - Monitoring Cell (Sensor)
Computer World Services —Lackland AFB, TX
- Full-time
- Mid-level
- Experience equivalent to degree accepted
- Associate's degree

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Senior ISSE (Trellix/HBSS focus)

Amentum -
San Antonio, TX

Quick Apply

Job Details

Full-time
$145,000 - $175,000 a year

Benefits

Health savings account
Employee stock purchase plan
Health insurance
Dental insurance
401(k)
Flexible spending account
Tuition reimbursement
Paid time off
Parental leave
Employee assistance program
Vision insurance
401(k) matching
Referral program

Qualifications

Vulnerability scanning implementation
Secret Clearance
Nessus
IAT Level III
Bachelor's degree
Splunk
Log analysis tools
Vulnerability management
IAT
IAT Level II
Vuls
SDLC

Full Job Description

Job DescriptionJob Description

In support of a challenging, critical, and rewarding program that provides integrated voice, video, and data services throughout the Information Technology lifecycle, Amentum is seeking Senior Information System Security Engineer (ISSE) to serve as a subject matter expert in the design, implementation, and optimization of enterprise security toolsets. The successful candidate will lead the engineering efforts for the Trellix (ePO) ecosystem and the ACAS (Nessus) suite, ensuring mission-critical assets remain secure, compliant, and resilient. This role requires a blend of high-level security architecture, hands-on troubleshooting, and the ability to drive secure-by-design principles across the System Development Life Cycle (SDLC). You must be a critical thinker, have a strong work ethic, and be able to work independently or as a member of a team in a dynamic environment. We value candidates who are detail-oriented while also being able to think and react quickly to emerging and unique problem sets. To be successful, you must be able to rapidly adapt and learn how to operate the front and back end of new products and processes.

Work Schedule:

5 Days (Mon – Fri); 8 hrs/Day; 40 hrs/wkly

Essential Responsibilities:

The duties and responsibilities of the Senior Information Systems Security Engineer include, but are not limited to the following:

Endpoint Security Engineering (Trellix/ePO)
Ecosystem Management: Expertly design, configure, and maintain Trellix components (ePO, Trellix Agent, DLP, HIPS, Policy Auditor, ABM, and VSE) across Windows and Linux environments.
Policy Development: Author and deploy endpoint security policies for ENS modules (Threat Prevention, Firewall, Web Control) based on DISA STIGs and organizational needs.
Threat Mitigation: Develop custom signatures, rules, and exceptions to address zero-day threats and specific operational requirements.
Operational Continuity: Validate custom exceptions to ensure uninterrupted operation of mission-critical processes without compromising compliance.
Vulnerability Management (ACAS/Nessus)
Architecture & Strategy: Design enterprise-wide vulnerability scanning strategies and manage the deployment of Security Centers and Nessus scanners.
Advanced Troubleshooting: Serve as the final escalation point for complex scan issues, credentialing problems, and system communication failures.
Risk Reporting: Configure automated reporting of compliance data to continuous monitoring systems and risk-scoring repositories.
Security Integration & Engineering
Tool Orchestration: Integrate Trellix and ACAS with tools such as Splunk, XSOAR, and ServiceNow to automate workflows and enhance incident response.
RMF Support: Provide authoritative recommendations and ACAS-generated artifacts to support the Assessment and Authorization (A&A) process and RMF packages for Authority to Operate (ATO).
Strategic Oversight: Lead the maintenance and scalability of test, development, and operational environments, collaborating with Network and DevSecOps teams to enhance resilience.
Multi-Tier Support: Deliver Tier 1–3 maintenance and incident response for the full cybersecurity portfolio (ACAS, Trellix, Splunk, XSOAR).
Compliance Mastery: Deep understanding of DISA STIGs, NIST 800-53, and the Risk Management Framework (RMF).

Minimum Requirements:

Must have active Top-Secret clearance with SCI or TS with the ability to acquire SCI
Knowledge and experience with NESSUS/ACAS and Trellix administration
Experience in Splunk role while working in a Splunk Clustered Environment
Must be able to work a 40-hour work week, normally Monday through Friday.
Ability to work overtime during critical peaks and be available to meet last-minute requests for overtime if needed.
Ability to travel (5-10%) primarily within 75 miles.
Familiarity with MS Office applications such as Excel, Word, Outlook, SharePoint, Project, and Visio.
Exceptional attention to detail; excellent verbal and written communication skills; strong critical thinking, organizational, time-management, and problem-solving skills.    
Ability to work both independently and as part of a team in a dynamic environment.

Clearance Required:

Must have active Top-Secret clearance with SCI or TS with the ability to acquire SCI

Minimum Education:

Bachelor’s Degree in a related field (Cyber and/or Engineering)

Minimum Years of Experience:

8 years of relevant experience

Required Certifications:

Must possess, or be able to obtain, one of the following 8140 IAT Level II or III baseline certifications before a start date:
Level II certifications include – CCNA Security, GISCP, GSEC, Security+ CE, SSCP
Level III certifications include – CASP CE, CCNP Security, CISA, CISSP (or Associate), GCED, GCIH

Preferred Qualifications:

RHEL Administration: Proficient understanding of Red Hat Enterprise Linux (RHEL) 8 and 9, including the ability to monitor and maintain cybersecurity tools at the OS level.
SOAR Automation: Experience managing the full lifecycle of XSOAR infrastructure, including building complex playbooks, custom scripts, and integrations to automate cyber workflows.
Splunk O&M: Proficiency in Splunk Operations & Maintenance, including managing distributed components, index management, version upgrades, and creating custom dashboards via the Monitoring Console.

#INDTech

Job Type: Full-time

Pay: $145,000.00 - $175,000.00 per year

Benefits:

401(k)
401(k) matching
Dental insurance
Employee assistance program
Flexible spending account
Health insurance
Health savings account
Paid time off
Parental leave
Referral program
Tuition reimbursement
Vision insurance

Compensation Package:

Employee stock purchase plan

Education:

Bachelor's (Required)

Experience:

Trellix/HBSS Administration: 10 years (Required)
Tier III Security Support: 10 years (Required)

License/Certification:

IAT Level II (Required)
IAT Level III (Preferred)

Security clearance:

Secret (Required)

Ability to Relocate:

San Antonio, TX 78218: Relocate before starting work (Required)

Work Location: In person

Quick Apply

Refine Your Search

ccna jobs in san antonio, tx

Senior ISSE (Trellix/HBSS focus)

Principal Unified Communications Engineer

Senior Unified Communications Engineer

Linux Integration and Test Engineer

Network Engineer

Operations Linux System Administrator - Web/DB/Cloud

Information Systems Security Officer (ISSO), Network Security, TS/SCI

Local Team Network Administrator

IT Help Desk Engineer

System Administrator

IS and Cybersecurity Professional - Entry (AFIN Reporting Cell - ESI)

Network Engineer

Network Engineer

Field Service Engineer 2 - Barstow, Texas

Firewall/Network Security Administrator

Network Engineer

Systems Engineer / System Administrator for Managed Service Provider

IT Systems Analyst II/III (Change Management) – Change Manager

Software Cloud Engineer - Junior

Network Operations Center Technician I - Monitoring Cell (Sensor)

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