21 System Administration jobs in the United States

Position Overview

The Cybersecurity System Administrator requires an associate's degree or certificate from a technical training institute and a minimum of five years of related technical experience in supporting an Information Technology (IT) environment.

The Cybersecurity Specialist serving as a System Administrator within the Insider Threat (InT) team is responsible for configuring, maintaining, and operating network infrastructure that supports the InT mission. This role ensures that IT systems remain secure, stable, and optimized to protect sensitive operations.

The System Administrator will perform the following responsibilities:

• Configure and maintain systems supporting InT operations.
• Monitor networks continuously to detect suspicious activity and enhance overall cybersecurity posture.
• Monitor server application for availability, latency, and gateway queuing and maintain current knowledge of vendor upgrades and patches for both the server and client applications.
• Analyze security incidents and implement effective incident response plans.
• Manage and secure systems, user accounts, and access controls.
• Perform regular updates, patches, and backups.
• Ensure User Activity Monitoring (UAM) tools and processes adhere to Committee on National Security Systems Directive 504 (CNNSD-504).
• Monitor the server application, system, and security logs using various tools such as Microsoft Operational Management server VMWare vSphere, Qwest Auditor, and NetIQ.
• Possess knowledge of other Microsoft products used to manage an enterprise operation.
• Ability to develop project management documentation.
• Ability to work without guidance.
• Ability to manage and initiate projects.
• Other duties as assigned.

CNNSD-504 Compliance:

This directive mandates stringent safeguards to protect national security systems against insider threats: individuals with authorized access who may attempt to exploit, compromise, or disclose classified information. Compliance with CNNSD-504 is vital to early detection and mitigation of these risks.

Analyzing User Activity Data:

Identify suspicious and/or anomalous behavior patterns or policy violations. Generate reports on user activity and trends. Set up and respond to activity-based alarms. Investigate security incidents and provide evidence. Ensure compliance with data privacy regulations.

• Review the alerts of the tool(s) for evaluation and when necessary, furtherance to the agency InT Coordinator.
• Report validated triggers/anomalies detected immediately to the InT Coordinator.Detect insider threats, whether intentional or unintentional, by monitoring user activity for suspicious behavior such as unauthorized access to sensitive data, classified platforms, unusual file transfers, and excessive access attempts.
• Conduct daily all-source integration and analysis of information to establish normal baseline activities, to include indicators of anomalous activity and privileged user activity logs.
• Initiate Cyber Analysis and Response Team (CART) case procedures. Notify the Information Technology Directorate (ITD) Network Operations Security Center (NOSC) of actionable alerts and threats to the networks initiated by or attributable to users.
• Provide professional advice regarding the agency level policy detailing the use of a Focused Observation capability for the monitoring of a specific user.
• Prevent data breaches.
• Ensure compliance by providing a record of user activity and demonstrating an adherence to policies.
• Ensure data security by monitoring access and usage.
• Provide activity reports from data collection that will provide insights into user activity, allowing for analysis of trends and areas for improvement.
• Provide data analysis to identify potential security risks and compliance violations.
• Enforce security policies by monitoring user actions and alerting administrators to violations such as logon failures, account lockouts, and attempts to access restricted websites or applications.
• Ensure that UAM data associated to an insider threat inquiry or investigation is stored for a minimum of 5 years.
• Annually (at the least) review triggers, thresholds, and alerts.
• Interface with ITD on InT cybersecurity support including, but not limited to, maintenance of the data transfer portal site, Classified Support Team (CST) support regarding UAM, cross-domain solution capabilities in the Classified Document Registry (CDR), Director Office (DIRO) Security Office, and Special Access Program Central Office (SAPCO).

Experience working with various classification levels (e.g., Unclassified, Secret, Top Secret) isrequired; SCI and SAP are preferred.

Required Role Qualifications:

• work role (System Administrator) compliance (immediate level)

(Cloud+, GICSP, GSEC, Security+, SSCP)

• Technical Skills:
  
  • Strong understanding of security principles, risk management framework (RMF), and security controls.
  • Familiarity with SIEM security architecture and SIEM oriented cybersecurity tools.
  • Proficiency in conducting vulnerability assessments, penetration testing, and security control validation.
  • Experience with security assessment tools and technologies.
  • Familiarity with operating systems, networking protocols, and security architectures.
  • Knowledge of security-hardening techniques and best practices.
    
    
  
  
• Communication Skills:

Excellent written and verbal communication skills, with the ability to effectively communicate technical information to both technical and non-technical audiences.

Preferred Qualifications:

• Experience with Security Information and Event Management (SIEM) type systems, used to collect and analyze security data to identify and respond to potential threats.
• Knowledge of security automation and orchestration tools.
• Familiarity with agile development methodologies.

Additional Information

• This job description is not designed to cover or contain all job duties required of the employee. There may be additional activities, duties and/or responsibilities that are required for this position that are not listed in this job description.
• In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification document form upon hire.

• System High is a Military friendly employer. Our extensive work on behalf of the U.S. government offers those who have served in uniform an opportunity to continue to serve their country in a new and exciting way while enjoying a successful civilian career.

• System High Corporation is an Equal Opportunity/Affirmative Action Employer. We consider applicants without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender, gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, or membership in any other group protected by federal, state, or local law.
• Equal opportunity legal notices can be viewed on the following PDF's: EEO is the Law ; EEO is the Law Supplement ; Pay Transparency Nondiscrimination

Warning: Beware of recruitment scams: System High will never request money or personal purchases during the hiring process. Verify all communications come from a systemhigh.com or msg.paycomonline.com email address.

Location: Arlington, VA

Must have Secret Security Clearance

Node is seeking a Lab Manager/Systems Administrator to support this critical customer mission.

Responsibilities:

• Applying advanced analytical skills and technical resources at the tactical levels and implementing infrastructure solutions supporting command decision-making and execution of mission requirements
• Support the implementation of new technologies and equipment in the lab environment
• Assesses network topology and device configurations identifying critical security concerns and providing security best practice recommendations
• Advises and provides insight into the development of lab standard operating procedures (SOPs) and policies
• Provide support for Virtual Private Network (VPN) or Virtual Desktop Infrastructure (e.g., Citrix) to users
• Provide support for MacOS and iOS to users
• Provide troubleshooting and triaging assistance for basic to intermediate technical challenges and user issues
• Monitor and respond to users on IT helpdesk channels and phone lines
• Assist in the management of user accounts and resetting credentials
• Performing implementation of granular access control, and monitoring systems for acceptable performance and user accessibility, establishing back-ups, and monitoring systems security
• Troubleshoot and resolve complex storage problems across the enterprise related to storage and replication strategies across local and wide area networks. Monitor channels for storage-related network and system issues and remediate them as they occur

Bachelor's degree in Computer Science, a related field or equivalent experience is required plus a minimum of 8 years of relevant experience; or Master's degree plus 6 years of relevant experience.

CLEARANCE REQUIREMENTS:
Department of Defense TS/SCI with Polygraph security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required.

Up to $5K Sign on Bonus for external hires.

Put your engineering talent to the ultimate test. At General Dynamics Mission Systems, we create the technologies, products and services that help our service members, intelligence analysts and first responders keep our nation safe. The work we do is so advanced our teams often redefine what's possible for the world. If you want to be a leader with the company that delivers smart solutions for our nation's challenges, this is your opportunity.

We apply advanced technologies such as Artificial Intelligence, Blockchain, AR/VR, Cloud Native and Quantum Physics to solve our customers' missions in cyber, RF, undersea, interstellar and everything in between.

As a seasoned leader, you'll be involved with our client's decision-making process by serving as a front-line interface to users with technical issues and conducting systems analysis and development to keep systems current with changing technologies. Your duties may include installing new software, troubleshooting, granting permissions to applications and training users. You'll also be responsible for the day-to-day support of server services by performing server administration for physical and virtual server operating systems and configuring, maintaining and troubleshooting of physical and virtual hardware and network related interfaces on servers. We'll rely on you to perform, maintain, troubleshoot and conduct a complete analysis of alerts; create scripts to automate repetitive processes; and work with customers to identify, isolate, and resolve problems with servers that are affecting other services.

• Technologies that aren't just top-notch, they're often top-secret
• A team of bold thinkers committed to exploring what's next
• Opportunities to gain new knowledge - as it's discovered

• A Bachelor's degree in Computer Science, a related field or equivalent experience plus a minimum of 8 years of relevant experience; or Master's degree plus 6 years of relevant experience
• Advanced understanding of server based operating systems
• Subject matter expert (SME) with the ability to mentor others on administrating the server environment
• Enhanced troubleshooting skills within the server OS as well as both networking and storage technologies
• Hands-on experience developing, deploying and supporting large-scale enterprise server solutions

• Hands-on work with RedHat Linux, system/server builds, and advanced troubleshooting

• Engaging with cross-domain and boundary device solutions

• Managing enterprise-level solutions and re-imaging Linux workstations, servers, and peripherals

• Strong experience with Red Hat LINUX command line administration

• Proficiency in Linux OS and hardware/software troubleshooting

• Ability to apply Security Technical Implementation Guides (STIGs) and address vulnerabilities. Ability to harden Linux machines and troubleshoot exceptions to the hardening process

• Team player who thrives in collaborative environments and revels in team success
• Broad understanding of the interrelationships within the IT environment with focus on server and services
• Senior level knowledge of physical and virtual server support
• Senior level knowledge of access, permissions and security that gives the clients the access to the data they need to perform their daily activities

#CJ3

Target salary range: USD $29,896.00/Yr. - USD 140,551.00/Yr. This estimate represents the typical salary range for this position based on experience and other factors (geographic location, etc.). Actual pay may vary. This job posting will remain open until the position is filled.

General Dynamics Mission Systems (GDMS) engineers a diverse portfolio of high technology solutions, products and services that enable customers to successfully execute missions across all domains of operation. With a global team of 12,000+ top professionals, we partner with the best in industry to expand the bounds of innovation in the defense and scientific arenas. Given the nature of our work and who we are, we value trust, honesty, alignment and transparency. We offer highly competitive benefits and pride ourselves in being a great place to work with a shared sense of purpose. You will also enjoy a flexible work environment where contributions are recognized and rewarded. If who we are and what we do resonates with you, we invite you to join our high-performance team!

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Essential Functions

• This role requires hands on experience with nCino lending operations system, the expectation is for this position to be the subject matter expert for the LOS.

• Make recommendations based on product vision and market requirements, researched data, and business priorities.

• Recognize and propose changes in the workflow to maintain maximum efficiency and leverage synergies between Consumer, Mortgage and Collection departments.

• Elicit information and ideas from subject matter experts, business owners, vendors, and others regarding existing and proposed business systems.

• Collaborate with stakeholders and subject matter experts to document, communicate, validate, and refine necessary requirements and make recommendations.

• Serve as key resource for technology implementation projects.

• Assist business owner with business base development and RFP process (as applicable) during the project initiation phase.

• Serve as a liaison between business units and technology teams through which requirements flow.

• Assist in all phases of lending systems design, development, testing and support.

• Support the development of training and implementation material.

• Participate in the implementation and provide post-implementation support.

• Demonstrate compliance with all regulations for assigned job function and apply to designated job responsibilities. Keep up to date on regulation changes.

• Maintain the following assigned lending systems: Consumer Loan Origination System, Mortgage Loan Origination System and Collection Software.

Redwood Credit Union is looking for an Application Specialist with nCino System Administration expertise. This position will also be responsible for identifying and documenting business requirements, investigating business systems, identifying options for improving business systems and bridging the needs of the business with the use of information technology. The position is responsible for the design and configuration of workflows, quality assurance testing, implementation, change management control and software troubleshooting for all vendor licensed software used in Mortgage and Consumer loan origination and in Collections. The Application Specialist must maintain knowledge of the core lending principles, regulatory requirements, and standards of the lending departments whose applications they are assigned to support.

Key Responsibilities

o This role requires hands on experience with nCino lending operations system, the expectation is for this position to be the subject matter expert for the LOS.

o Make recommendations based on product vision and market requirements, researched data, and business priorities.

o Recognize and propose changes in the workflow to maintain maximum efficiency and leverage synergies between Consumer, Mortgage and Collection departments.

o Elicit information and ideas from subject matter experts, business owners, vendors, and others regarding existing and proposed business systems.

o Collaborate with stakeholders and subject matter experts to document, communicate, validate, and refine necessary requirements and make recommendations.

o Serve as key resource for technology implementation projects.

o Assist business owner with business base development and RFP process (as applicable) during the project initiation phase.

o Serve as a liaison between business units and technology teams through which requirements flow.

o Assist in all phases of lending systems design, development, testing and support.

o Support the development of training and implementation material.

o Participate in the implementation and provide post-implementation support.

o Demonstrate compliance with all regulations for assigned job function and apply to designated job responsibilities. Keep up to date on regulation changes.

o Maintain the following assigned lending systems: Consumer Loan Origination System, Mortgage Loan Origination System and Collection Software.

Join us and discover why you'll love working at Redwood Credit Union!

ABOUT REDWOOD CREDIT UNION (RCU):

At Redwood Credit Union, our mission is to passionately serve the best interests of our Members and communities. Since 1950, we have been dedicated to supporting the financial well-being of our Members through better rates, low or no fees, and best-in-class customer service. Our purpose is to inspire hope and elevate the financial well-being of our communities one person at a time, through good times and bad.

As a not-for-profit financial institution, we are committed to a people-first approach, which is reflected not only in how we serve our Members, but also in how we treat our employees. Our leadership team is deeply focused on fostering a culture of heart and empathy, integrity, passion, inclusion, meaningful relationships, excellence, and ensuring financial well-being for all.

Why work for Redwood Credit Union?

• 29th largest credit union in the U.S. and the largest financial institution based in the North Bay

• Awarded a 5-Star Rating based on 6/30/24 financial data by Bauer Financial

• Recognized by Newsweek as one of "America's Greatest Midsize Workplaces 2025"

• Recognized by Newsweek as one of "America's Best Credit Unions 2024"

• Recognized by Forbes as one of "America's Best Small Employers 2023"

• Voted Best Places to Work in the North Bay 20 years in a row

• World-class Employee Engagement scores

• Rated Superior in Service by more than 90% of Members, surveyed by SF Gate

• Industry leading Net Promoter Scores across the U.S.

Minimum Qualifications: Knowledge, Skills and Abilities

• Ability to act independently and confidentially with little or no supervision.
• Ability to distinguish and manage confidential information, materials, and conversations.
• Ability to effectively communicate verbally and in writing.
• Ability to establish and maintain effective working relationships in a diverse environment.
• Ability to operate a personal computer and software including word processing, email, intra/internet.
• Working knowledge of all aspects of financial institution mortgage and consumer lending methods, practices, and services, as well as laws, rules, and regulations.
• Ability to critically think, analyze problems and opportunities, identify, and evaluate alternatives, and develop sound, effective approaches.
• Capable of presenting solutions and ideas in a confident, professional manner and to communicate effectively with senior leadership.