Senior Systems Administrator - Mission-Critical IT & Security
West 4th Strategy
West 4th Strategy is seeking an experienced System Administrator III for the Naval Dosimetry Center in Bethesda, MD. The role focuses on maintaining mission-ready server/datacenter infrastructure, resolving failures, and enforcing security baselines in a regulated environment. This is a full-time position with competitive benefits. The candidate will manage Windows Server environments, SQL Server-based applications, and PKI-related operations, while delivering technical summaries for Government #J-18808-Ljbffr West 4th Strategy
- 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... ...stakeholders to support mission‑critical operations. Hybrid work...Senior
- ...Maryland. The role involves Agile development and operations for mission-critical systems, requiring expert knowledge in Java and cloud platforms... ..., ideally over 12 years, and must have an active TS/SCI security clearance. This position offers competitive benefits including...Senior
- Bcore is seeking a Senior Network Administrator in Gaithersburg, MD to design, implement, and optimize critical government network infrastructure. You will work on LAN/WAN... ...cloud connectivity to support national security missions. Required TS clearance with SCI eligibility...Senior
- Leidos in Gaithersburg, MD is seeking a Senior Network Administrator to lead enterprise network infrastructure, ensure security, and support agile teams in delivering mission-critical capabilities for the Intelligence Community. The role requires active Top Secret/SCI clearance...Senior
- Amatriot Group, LLC is seeking an IT Systems Administrator to support NSWC Carderock West in Bethesda... ...nine IT professionals maintaining mission-critical systems and collaborating with... ...incident response, and adherence to DoD security standards, including STIG implementation...Suggested
- Leidos is seeking a Senior Systems Administrator/Help Desk Engineer to support the Chinook Agile software... .... The role ensures stability, security, and performance of Linux/Windows... ...environments and provides high-level IT support to mission users and Agile teams. The position...Senior
- ...Arlington, VA is seeking an Oracle Database Administrator to design, build, deliver, and support... ..., real-time data persistence for mission-critical applications. The role requires at... ...queries, tune performance, implement robust security controls, and ensure data integrity...Senior
- ..., VA is seeking a Cloud Systems Administrator to manage and oversee secure cloud engagement kits for... ...and security during critical operations. Exceptional... ...will thrive in fast-paced, mission-critical environments. BCMC... ...a recognized leader in IT and Cybersecurity...
- Nightwing is seeking a Cloud Systems Administrator to manage day-to-day Bespin cloud engagement kits for federal mission support. You will ensure security, reliability, and performance of cloud... ...while supporting fast-paced, critical operations. Required are TS/SCI clearance...
$99.3k - $158.69k
...Management Specialist, Senior oversees enterprise... ...activities with security policies,... ...requirements, and mission needs while minimizing impact to critical services. The specialist... ...accountability with system owners. Required... ...Bachelor’s degree in IT, Computer Science,...SeniorContract workWork at officeRemote work- ...in Arlington, Virginia, seeks a Senior Systems Administrator (Lead) to oversee the IT Support Team and ensure operational... ...managing IT support, leading security implementations, and maintaining... ...offers a chance to contribute to critical government functions. #J-18808-Ljbffr...Senior
- ...August 2025 Department: Systems Engineering Location:... ...Group, the Senior Systems Administrator is responsible for helping... ...that meet stringent security requirements for maintaining... ...in a safety-critical industry. This role is... ...alternative designs based upon IT security risks...SeniorPermanent employmentFull timeTemporary workFor subcontractorWork at officeRemote workFlexible hours
- M.C. Dean, Inc. is seeking a Senior Design Engineer in McLean, Virginia to lead design and implementation for complex electronic security systems. The role requires expertise in the design-build lifecycle, strong leadership skills, and a Bachelor’s Degree in Engineering...Senior
- ...oversee AWS Cloud Managed Services for mission-critical operations. The role demands strategic leadership... ...and deep technical understanding in a secure environment, managing multimillion-... ...experience in program management and IT leadership. This position provides an opportunity...Senior
- Leidos seeks a Senior Systems Administrator/Help Desk Engineer to support the Chinook program for an Intelligence Community... ...with cybersecurity and software teams to ensure mission-critical operations. You will manage secure on-prem and cloud environments, implement...
- ...experienced UI/UX Designer to lead human-centered design for mission-critical government applications in McLean, VA. You will own the end-to... ...managers and engineers, building and maintaining design systems, ensuring accessibility, and delivering high-quality, usable...Senior
- Planned Systems International (PSI) is seeking a Tier II System Administrator to support the Army Geospatial Center near Fort Belvoir, VA. The role involves maintaining... ...and storage infrastructure, implementing security controls, and providing Tier II/III support to...
- Leidos seeks a Mid-Level Systems Administrator / Helpdesk Engineer to support the Chinook Program... ..., and on-call duties to maintain mission-critical systems. The candidate will work across... ...SCI poly requirements and a focus on security and reliability. #J-18808-Ljbffr Koitecc...
- Jobtailor in Arlington, VA seeks a seasoned Program and Project Manager to drive mission-critical initiatives within the Army enterprise. You will develop roadmaps, lead fast-moving programs, and ensure PMO governance is followed. Prepare executive briefings, track funding...Senior
- Leidos is seeking a Senior Network Administrator in Gaithersburg, MD to lead enterprise network design, deployment, and security for mission-critical operations. You’ll work with Agile teams to deliver scalable LAN/WAN infrastructure, support cloud connectivity, and ensure...Senior
- ...experienced electrical technician to maintain and repair critical data center systems, ensuring uptime above 99.999%. You will perform preventive... ...work with engineers, vendors, and field teams to support mission‑critical facilities. Candidates must hold a state Masters...Senior
$123k - $136k
...DescriptionEverforth ECS Federal is seeking a Senior Systems Administrator to support a mission-focused federal IT program in Washington DC.... ...Everforth ECS Federal to keep secure mission systems running... ...continuity for mission-critical federal IT systems.The Systems...SeniorContract work- ...troubleshooting, maintenance, and performance of HVAC equipment in a mission-critical environment. The role requires extensive field knowledge and... ...staff, operating and maintaining site-critical engineering systems, and ensuring life-safety and environmental controls are...Senior
- A leading construction firm in Falls Church seeks a Senior Project Manager for GovCloud/Mission Critical projects. Responsibilities include managing projects from design to implementation, ensuring compliance with quality and safety standards, and developing client relationships...SeniorFull time
- ...collaborate with a multidisciplinary team across AI, data science, and mission-focused software development. Requires 3-5+ years with a BS... ...active DoD SECRET clearance. You will contribute to mission-critical systems at STR’s Arlington, VA or Woburn, MA offices, with periodic...Senior
- Analytica is seeking a seasoned and adaptable Senior System Administrator to join our infrastructure team in supporting an innovative federal mission. In this role, you will provide high-... ...vision to optimize, manage, and secure our enterprise hardware, software, and...Senior
$170k - $219k
As a Sr. Systems Administrator III, you will work as part of a collaborative... ...fit the customer’s mission needs.We know that... ...or similar IT infrastructure role.Hands... ...-visibility, mission-critical environment with... ...certifications include Security+ and VMware VCP-DCV or...SeniorFull timeLocal area- Systems Planning and Analysis, Inc. (SPA) is seeking a Database Administrator to manage and optimize databases supporting mission-critical applications in the Virginia area. You will ensure data integrity, performance, and security across multiple environments, collaborating...
$77.6k - $176k
System Administrator, SeniorThe Opportunity: Your combination of people skills and system administrator... ...network administration and managing secure, multi-domain environments to help our customer deploy and maintain mission-critical IT infrastructure, strengthen their...SeniorFull timeContract workPart timeWork at officeLocal areaRemote work- CDIT LLC in McLean, Virginia, is looking for a skilled Software Developer with C# expertise to join a mission-critical team. The role involves shaping requirements and providing technical support for a flagship application, and candidates must possess a TS/SCI with Polygraph...Senior
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