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Systems Administrator, Level 3, San Antonio TX (AE26061327)

Advantage Engineering & IT Solutions
San Antonio, TX Full Time
POSTED ON 6/27/2026
AVAILABLE BEFORE 7/27/2026
AEITS, Inc. a GTSC Company, seeks Systems Administrator, Level 3.

~~~ This position is shift work - Tues-Sat 9pm-5am

Location: San Antonio, Texas

~~~ All work is on-site. This is not a hybrid or remote position.

Mission:

Analyze, debug and integrate existing software into new or modified systems or operating environments.

Clearance: Active Top Secret SCI with polygraph.

Certifications / Must have at least 1:
  • Cisco Certified Network Associate (CCNA): Security
  • CompTIA Cybersecurity Analyst (CySA )
  • CompTIA Security CE
  • GIAC Security Essentials (GSEC)
  • Global Industrial Cyber Security
  • Professional (GICSP)
  • Systems Security Certified Practitioner (SSCP)

Position Description:
  • Performs installation, maintenance and repair of telecommunications systems.
  • Provide 24/7 mission and infrastructure monitoring, notification, administrative support, logging, ticketing and reporting for supported systems
  • Coordinates with both ISP and GW GES watch staff for situational awareness and support actions, and with customers and support personnel to provide notification and response to event activity
  • IFSD personnel perform router and switch updates in support of security actions

Education Requirements:
  • High School diploma or GED with 15 years experience, or
  • Bachelor's degree with 10 years of experience.

BENEFITS - Full-time Employees
  • 401K with employer contribution. Fully vested at 1 year anniversary.
  • Five (5) weeks comprehensive annual leave (25 workdays).
  • Additional leave can be earned in lieu of overtime.
  • 11 Paid Federal Government Holidays.
  • Up to $5,000 annually for individually tailored education / training program.
  • All education plans must be pre-approved by Advantage Engineering management.
  • Life Insurance at 1x annual salary with employee option to purchase additional coverage for self and dependents.
  • Short-term and long-term disability.
  • We contribute a generous portion towards the cost of monthly medical plans for any of the three medical, 1 dental and 1 vision plan provided by CareFirst.
  • All employees are eligible to earn generous incentives and performance bonuses.

AEITS, a GTSC company, is proud to be an equal opportunity employer, committed to recruiting, hiring, and promoting qualified people of all backgrounds, regardless of sex, race, color, creed, national origin, religion, age, marital status, pregnancy, physical, mental or sensory disability; sexual orientation; gender identity or any other basis protected by federal, state or local law. Learn more about your EEO rights as an applicant.

GTSC is committed to working with and providing reasonable accommodation to applicants with physical and mental disabilities. If you have a disability and require assistance with our online application process, please tell us how we can help by contacting us at

Note: This accessibility is intended for individuals requiring accommodation and should not be used to check the status of your application. Inquiries not specific to requesting accommodation will be discarded.

GTSC participates in the E-Verify program in all locations as required by law. Learn more about the E-Verify program.

AEGARLOCHSFORD

Salary : $97,600 - $105,000

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