Senior Systems Administrator
Tecolote Research
Join to apply for the Senior Systems Administrator role at Tecolote Research Overview We are seeking a skilled and motivated Systems Administrator to join our IT team. The ideal candidate will be responsible for managing, maintaining, and optimizing our enterprise systems and cloud infrastructure. This position requires a proactive individual with deep technical expertise across various platforms and a passion for problem-solving and innovation. Responsibilities Design, implement, and maintain secure and scalable cloud infrastructure using AWS services (EC2, S3, WatchTower, and Terraform for Infrastructure as Code). Administer Office 365 and Exchange Online environments. Administer and optimize Zscaler services, including ZIA, ZPA, and ZDX. Deploy, configure, and manage Intune for device and application management (including Windows Defender). Maintain and optimize VMware vSphere 8 environments, including vCenter, ESXi, and Horizon View. Administer Windows Server roles and services, including Active Directory, DNS, DHCP, IIS, and BitLocker. Maintain and monitor hardware systems, including Dell PowerEdge servers, PureStorage SANs, and Ubiquiti Edge/Unifi devices. Collaborate with cross-functional teams to troubleshoot and resolve technical issues. Implement and enforce IT policies and security measures to protect organizational assets. Document system configurations, processes, and procedures. Skills Required Required: Proven experience as a Systems Administrator or similar role. Hands-on experience with AWS (EC2, S3, WatchTower, Terraform). Strong knowledge of Office 365, Exchange Online, and Intune. Expertise in managing Zscaler services (ZIA, ZPA, ZDX). Experience managing VMware vSphere 8 environments (vCenter, ESXi, Horizon View). Solid understanding of Windows Server roles and services, including Active Directory, DNS, DHCP, IIS, and BitLocker. Knowledge of enterprise hardware (Dell PowerEdge servers, PureStorage SANs, Ubiquiti Edge/Unifi). Strong problem-solving skills and ability to work independently. Excellent communication and documentation skills. Preferred: Relevant certifications such as AWS Certified Solutions Architect, Microsoft Certified: Azure Administrator, VMware Certified Professional, or Zscaler certifications. Experience in scripting and automation using PowerShell, Python, or similar. Familiarity with compliance and regulatory frameworks relevant to IT (e.g., CMMC, NIST, C-SCRM). Education Bachelors degree preferred, preferably in management information systems, math or engineering. Additional degrees or certifications may substitute for years of experience. We offer competitive salaries commensurate with education and experience. Our benefits include: Comprehensive health, dental, life, long and short-term disability insurance 100% Company funded Retirement Plans Generous vacation, holiday and sick pay plans Tuition assistance About Tecolote Research Tecolote Research is a private, employee-owned corporation where people are our primary resource. Our investments in technology and training give our employees the tools to succeed, and our high employee retention rate adds value to our clients. Apply now to connect with a company that invests in you. View all career opportunities: Follow us on social media: LinkedIn | X @TecoloteInc | Facebook [EOE/M/F/Disability/Veterans] Seniority level Mid-Senior level Employment type Full-time Job function Information Technology Industries Business Consulting and Services Space Research and Technology #J-18808-Ljbffr Tecolote Research
- ...Position Summary Seeking an experienced Senior Systems Administrator to support mission-critical secure messaging and enterprise infrastructure environments. The role combines secure messaging gateway administration, Windows Server, Active Directory, virtualization,...SeniorFull time
- ...Choose MITRE for a career with purpose - and help shape the future. MITRE's Classified Infrastructure is looking for a Senior Systems Administrator to be part of a distributed team. A successful candidate will be delivering timely, effective, and sustainable...SeniorWork experience placementInternshipLocal areaImmediate start
$150k - $175k
OverviewAMERICAN SYSTEMS, a 100% employee-owned federal contracting company, is seeking a Senior Systems Administrator with strong Red Hat Linux CLI and Windows administration experience to support a Special Access Program in Washington, DC.This role focuses on owning and...SeniorLocal areaRemote workRelocation package- ...experience utilizing Figma and Angular to build and design UI/UX.Responsible for installing, configuring, and maintaining operating system workstations and servers, including web servers, in support of business processing requirements.Performs software installations and...SeniorFull time
$150k - $200k
MTSI is seeking a Senior Systems Administrator - COMSEC Specialist whose primary function will be to lead/support development, testing and integration of advanced communication systems. This position will be located in the Washington DC area.Your essential job functions...SeniorContract work- ...Sana Biotechnology seeks a Senior Systems Administrator to design, implement, and operate infrastructure supporting corporate, research, laboratory, and regulated environments across multiple sites. The role involves managing on-premises and cloud systems, leading technical...Senior
$80k - $90k
...24 and by the Nonprofit Times as one of the "Best Nonprofits to Work For" in America in April 2022 Position Summary The Senior Systems Administrator plays a hands-on role in keeping SEIA’s technology environment reliable and secure. This position is ideal for someone who...SeniorFull timeWork at officeLocal areaRemote work3 days per week$75k - $85k
...mission‑critical technology, engineering, and mission support services to federal government customers. We are seeking a Senior Systems Administrator to play a key role in a critical DOD program, powering the platform that securely collects, analyzes, reports, and...SeniorTemporary workImmediate startRemote work- TechFlow Inc. is seeking a Senior Systems Administrator to support a critical DoD program, administering and optimizing the enterprise IT infrastructure to ensure secure, available systems. Hybrid remote work requires in‑person meetings in the Northern VA/DC Metro area...SeniorRemote work
- TechFlow, Inc. seeks a Senior Systems Administrator to maintain and optimize the enterprise IT infrastructure for a critical DOD program, ensuring security, stability, and high availability. You will collaborate with cybersecurity, engineers, and government stakeholders...Senior
- An innovative firm is seeking a skilled Senior Systems Administrator to enhance its IT team. This role involves managing and optimizing cloud infrastructure and enterprise systems, requiring deep technical expertise in AWS, Office 365, and VMware. The ideal candidate will...SeniorWork at office
- ...We are searching for a Systems Administrator to join the Reston, VA location of the Digital Engineering Department in the Cyber, Modeling, and Simulation Division of the Information Advantage Office at the Applied Research Laboratory (ARL) at Penn State. You will maintain...SeniorFull timeWork at officeImmediate start
$92.3k - $166.85k
...Community customers as they address evolving national security challenges.About the OpportunityLeidos is seeking an experienced Senior System Administrator to support the implementation, operation, troubleshooting, and maintenance of IT systems and infrastructure. You will...SeniorFull time$92.3k - $166.85k
Leidos has a new and exciting opportunity for a Sr. Systems Administrator in our Intel Sector's (IS) Solutions Analysis Business Area (ASBA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods...SeniorFull timeImmediate startFlexible hours$77.6k - $176k
System Administrator, SeniorThe Opportunity: Your technical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve a critical technology supporting the Department of Defense (DoD)? We’re looking for a System...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work- ...Sr. Linux System Administrator / DevOps Engineer – Kubernetes Schedule: Monday–Friday, 10:00 AM – 6:00 PM preferred. The team covers 6:00 AM – 6:00 PM. Clearance: Active TS/SCI with Full Scope Polygraph What You’ll Do Administer and engineer RHEL/CentOS...SeniorFull timeMonday to Friday
- ...applicants must currently reside in the United States Overview BigBear.ai is seeking a BigBear.ai is seeking a Senior Systems Administrator to support the Defense Intelligence Agency (DIA). You will be joining our amazing BigBear.ai team for immediate systems...SeniorFull timeTemporary workImmediate start
$77.6k - $176k
DevOps Engineer and System Administrator, SeniorThe Opportunity:Are you looking for an opportunity to leverage your DevOps and system administration expertise in a high impact role? We’re building and launching capability for Enterprise-web based systems in cybersecurity...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work$77.6k - $176k
...Job Number: R0232760 System Administrator, Senior The Opportunity: Your technical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve a critical technology supporting the Department of Defense (DoD...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work$80k - $120k
...6 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-Time Shift: Day Job Travel... ...SAIC is seeking a highly motivated and experienced Senior Systems Administrator - RHEL to join our MAJESTIC Joint Program Office (JPO) Team...SeniorFull timeFor subcontractorWork at officeRemote workShift work$100k - $140k
Sr. System AdministratorLocation: Onsite Requirements: Hybrid, Remote, Fully Onsite Compensation Range: $100,000-$140,000 annually... ...leading manufacturer of household mirrors seeking a Sr. System Administrator to take ownership of their Epicor Kinetic ERP environment. Reporting...SeniorRemote workRelocation$96.12k - $182.4k
...State Applicants. POSITION SPECIFICSWe are searching for a Systems Administrator to join the Reston, VA location of the Digital Engineering... ...CERTIFICATIONSIf filled as IT Platform Administrator (ARL) - Senior Professional, this position requires: Bachelor's Degree 6+ years...SeniorFull timeFor contractorsWork experience placementWork at officeImmediate startRemote work$125k - $140k
GovCIO is currently hiring for a Senior SQL Server Database Administrator to lead the management of enterprise SQL Server environments across multiple... .... This SME-level role requires mastery of SQL Server systems and related database technologies. Responsibilities...SeniorCurrently hiringRemote work$120k - $160k
...Description SAIC is seeking a Senior SQL Server Cloud Database Administrator and Migration Expert to lead the SQL migration from... ...maintenance, and performance tuning of enterprise database systems to On-premises, AWS and Azure Cloud. This role ensures...SeniorFull timeRemote workShift workAfternoon shiftEarly shift$116.35k - $210.33k
...customers as they address evolving national security challenges.About the OpportunityLeidos is seeking a highly experienced Senior System/Network Administrator - Systems Integration to support the implementation, operation, troubleshooting, and maintenance of complex IT...SeniorFull time- ...will have strong knowledge of Red Hat Enterprise Linux (RHEL) systems and will be able to design and implement automation scripts.... ...Environments, related systems, and middleware, focusing on system administration for contract specific operations. Requirements: Oversee...SeniorContract work
$131.3k - $237.35k
The Test and Training Enabling Architecture (TENA) program at Leidos is looking to add a Senior System Administrator Team Lead. Our mission is to develop tools for the United States Department of Defense test and training communities, to increase the speed of the development...SeniorFull timeWork at office- ...Job Description Job Description Description: On-site in Washington, DC Our client seeks a Senior Server Windows Engineer to provide systems administration, engineering, implementation, and migration support for a large Windows server estate across on-premises...SeniorHourly payPermanent employmentFull timeContract workLocal area
$131k - $198k
Position Summary Salesforce Life Sciences Cloud, Senior ConsultantOur Deloitte Customer team empowers organizations to build deeper relationships with customers through innovative strategies, advanced analytics, Generative AI, transformative technologies, and creative...SeniorLocal areaVisa sponsorship$95k - $120k
...actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. SR. IT SYSTEMS ADMINISTRATOR (TOP SECRET CLEARANCE) SpaceX is looking for a Sr. Systems Administrator with deep knowledge and broad experience across...SeniorTemporary workFlexible hoursWeekend work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Systems Administrator. Be the first to apply!
- computer systems administrator Arlington, VA
- microsoft systems administrator Arlington, VA
- system admin Arlington, VA
- remote systems administrator Arlington, VA
- IT administrator Arlington, VA
- enterprise administrator Arlington, VA
- IT infrastructure administrator Arlington, VA
- server administrator Arlington, VA
- systems administrator Arlington, VA
- application system administrator Arlington, VA




