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Sierra Nevada Company, LLC logo

Sr Systems Administrator

Sierra Nevada Company, LLC

Plano, TX · HybridFull-timeSeen todaySeen in employer's feed today

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At a glance

Compensation
No compensation found
Location
Plano, TXHybrid
Schedule
Full-time
Work Authorization
US work authorization required

Olive lists jobs from US employers, including remote roles you can work from the United States.

Requirements

Credentials this posting asks for.

Security clearance, required

Job overview

The Senior Systems Administrator provides strategic oversight and leadership for the organization’s systems infrastructure in an aerospace and defense environment. The role manages system integrity, security, and efficiency; leads complex projects; and mentors junior administrators. The position supports advanced system configurations, security measures, upgrades, integrations, and platform administration. It requires the ability to obtain and maintain a Secret U.S. Security Clearance, and U.S. citizenship is required for clearance eligibility.

Skills & qualifications

RequiredNice to have

Skills

Operating Systems, requiredNetwork Security, requiredSystem Security, requiredJama Connect, requiredJama Connect Interchange, requiredSQL, requiredRequirements Management, requiredDigital Thread, requiredModel-Based Systems Engineering, requiredInterpersonal Skills, requiredCommunication, requiredCustomer Care, requiredOrganizational Skills, requiredAttention to Detail, requiredEnterprise Project Leadership, requiredVendor Management, requiredCISSP, nice to haveVirtualization Technologies, nice to havePowerShell, nice to havePython, nice to haveAWS, nice to haveAzure, nice to haveTeamwork Cloud, nice to haveCameo, nice to have3DX TRM, nice to have3DX TRY, nice to haveGitHub, nice to haveServiceNow, nice to haveBIRT, nice to haveVelocity, nice to haveDefect Tracking, nice to haveNetwork Troubleshooting, nice to haveAWS Cloud Foundations, nice to haveAzure Fundamentals, nice to haveLifting 25 Lbs, required

Qualifications

Bachelor's in IT or Related, required8+ Years Related Experience, required12+ Years Related Experience Without Degree, requiredSecret Security Clearance, requiredU.S. Citizenship, requiredCISSP or Equivalent, nice to have5+ Years AWS and Azure Cloud Operations, nice to have5+ Years VMware Experience, nice to have5+ Years IT Operations Monitoring Tools, nice to have

Benefits

Medical Insurance
Dental Insurance
Vision Insurance
401(k) Match
Paid Time Off
Tuition Assistance

Full job description

Hybrid or in office

Plano, TX

Full time

R0031059

Do you have an eye for detail and a passion for developing innovation solutions? Join our team! As a Senior Systems Administrator, you will provide strategic oversight and leadership in managing the organization’s systems infrastructure. You will ensure system integrity, security, and efficiency while leading complex projects and mentoring junior administrators. This role requires deep technical expertise and the ability to guide the implementation of cutting-edge solutions in a fast-paced Aerospace and Defense environment.

As SNC's corporate team, we provide the company and its business areas with strategic direction and business support spanning executive management, finance and accounting, operations, human resources, legal, IT, information security, facilities, marketing, and communications.

Responsibilities:

  • Strategically plan, design, and implement advanced system configurations.

  • Oversee system performance monitoring and optimization.

  • Lead the implementation of advanced security measures.

  • Provide leadership and expert-level troubleshooting for critical system issues.

  • Develop and maintain comprehensive system documentation.

  • Manage and coordinate system upgrades and enhancements.

  • Conduct thorough system testing to ensure reliability and compliance.

  • Mentor junior systems administrators and provide technical guidance.

  • Manage user access permissions, customizations, and other requests for the platform(s)

  • Explore new / maintain existing cross-tool integration capabilities

Qualifications You Must Have:

  • Bachelor’s degree in an information technology related field.

  • 8+ years of experience in a related field.

  • Relevant experience can be considered as a substitute for the required educational qualifications. In the absence of a degree, a minimum of 12 years of related experience is required.

  • Higher level relevant degree may substitute for experience.

  • Mastery of operating systems (e.g., Windows, Linux).

  • Advanced knowledge of network and system security protocols.

  • Prior administration experience with Systems Engineering Requirements Management tools, including Jama Connect and Jama Connect Interchange

  • Experience with SQL

  • Familiarity with the systems engineering lifecycle, including requirement management, digital thread, and model-based systems engineering

  • Prior experience with systems administration in Windows or Linux environments.

  • Excellent interpersonal and communication skills to interact effectively with others.

  • Demonstrate a customer care philosophy that ensures a high level of customer satisfaction.

  • Proven organizational skills with an attention to detail

  • Experience leading large, enterprise-level projects and working with vendors.

  • The ability to obtain and maintain a Secret U.S. Security Clearance is required.

Qualifications We Prefer:

  • Certified Information Systems Security Professional (CISSP) or equivalent.

  • Extensive experience with virtualization technologies (e.g., VMware, Hyper-V).

  • Advanced scripting skills (e.g., PowerShell, Python).

  • Proven experience with cloud services (e.g., AWS, Azure).

  • System administration experience with Dassault Systèmes tools, specifically Teamwork Cloud, Cameo, and 3DX trigrams (TRM and TRY specifically)

  • Familiarity with GitHub

  • Familiarity with ServiceNow

  • Experience with BIRT and Velocity template scripting

  • Experience with software and hardware defect tracking processes

  • 5 + years' experience implementing and supporting AWS and Azure Cloud Operations.

  • 5 + years' experience implementing and supporting VMware (VRealize, VRealize Operations, VRealize Automation).

  • 5 + years' experience with IT Operations Monitoring Tools (PRTG, VROperations, Solarwinds).

  • Ability to troubleshoot network connectivity between Server Infrastructure.

  • Certifications:

  • AWS Cloud Foundations.

  • Azure Fundamentals.

Essential Functions:

  • Must be able to lift 25 lbs regularly.

  • Work primarily at a computer for extended periods.

  • Frequent use of hand/finger dexterity for computer work.

  • Ability to work in an office or hybrid environment.

  • Occasional travel may be required.

This posting will be open for application for a minimum of 5 days and may be extended based on business needs.

SNC offers annual incentive pay based upon performance that is commensurate with the level of the position.

SNC offers a generous benefit package, including medical, dental, and vision plans, 401(k) with 150% match up to 6%, life insurance, 3 weeks paid time off, tuition reimbursement, and more (https://www.sncorp.com/careers/total-rewards/) .

IMPORTANT NOTICE:

This position requires the ability to obtain and maintain a Secret U.S. Security Clearance. U.S. Citizenship status is required as this position needs an active U.S. Security Clearance for employment. Non-U.S. citizens may not be eligible to obtain a security clearance. The Department of Defense Consolidated Adjudications Facility (DoD CAF), a federal government agency, handles the adjudicative aspects of the security clearance eligibility process for industry applicants. Adjudicative factors which affect the outcome of the eligibility determination include, but are not limited to, allegiance to the U.S., foreign influence, foreign preference, criminal conduct, security violations and illegal drug use.

Learn more about the background check process for Security Clearances. (https://www.dcsa.mil/Personnel-Vetting/Background-Investigations-for-Applicants/Investigations-Clearance-Process/)

SNC is a global leader in aerospace and national security committed to moving the American Dream forward. We’re known and respected for our mission and execution focus, agility, and disruptive and rapid innovation. We provide leading edge technologies and transformative solutions that support our nation’s most critical security needs. If you are mission-focused, thrive in collaborative environments, and want to make our country stronger with state-of-the-art technologies that safeguard freedom, join our team!

SNC is an Equal Opportunity Employer committed to an environment free of discrimination. Employment decisions are made based on merit without regard to race, color, age, religion, sex, national origin, disability, status as a protected veteran or other characteristics protected by law.

SNC is a trusted global leader in aerospace and national security. Our innovative solutions enable connected protection through command, control and communications systems, as well as ISR, cyber, electromagnetic spectrum management, and other high capabilities for systems across all domains – sea, land, air, space and cyber.

As a longstanding leader in defense technology, SNC is the optimum intersection of commercial, defense and non-traditional contractors. We are one of the only privately owned mid-tier A&D contractors and we pride ourselves on our ability to invest early and often to ensure mission success on or ahead of schedule. It’s part of our mission to always stay one step ahead; working on solutions today to solve the problems of tomorrow.

Founded in 1963, SNC is owned by Chairwoman Eren Ozmen and CEO Fatih Ozmen.

How this job compares

Set against the 2,407 open Systems Administrator jobs on Olive Jobs, counted November 10, 2026.

Pay
  • This postingNot listed
  • Texas median$87–140K/yr47 salary ranges
  • US median$42–60/hr164 hourly ranges
Openings
Olive Jobs lists 133 open Systems Administrator jobs in Texas and 2,407 across the US. 5% of them nationwide are listed as remote or flexible.
Hiring the most in Texas
Experience
This posting asks for at least 8 years of experience — more than three in four Systems Administrator postings that state a minimum ask for (median 5 years, across 2,012 postings).
Education
345 of the 2,407 open Systems Administrator jobs (14%) ask for a bachelor's degree or higher.

Counted across the open, public US postings on Olive Jobs on November 10, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.

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