Sr Systems Administrator

Sierra Nevada Corporation; Plano (TX); Hybrid; USD 120,000 - 150,000; Full time

Benefits offered by this job

Medical insurance

Dental plan

Vision plan

401(k) with match

Life insurance

Paid time off

Tuition reimbursement

Job summary

Sierra Nevada Corp in Plano, TX seeks a Senior Systems Administrator to provide strategic leadership of the organization’s systems infrastructure in a fast-paced Aerospace and Defense environment. You will ensure system integrity, security, and efficiency while guiding complex projects and mentoring junior administrators.

Responsibilities include designing configurations, monitoring performance, implementing security enhancements, maintaining documentation, coordinating upgrades, and enabling

Job description

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.

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.

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 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.