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
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$103.5k - $181.1k
...an amazingly talented Systems Engineer to join our team... ...of degree. VMWare Administration Linux and Windows... ...WSUS Administration Security Clearance Requirement:... ...ensure the success of missions around the globe. Our... ...sustaining our nation's most critical assets, from Earth to...SeniorRemote workFlexible hours- ...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
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- ...day onsite and four days remote per week. You will serve as a senior SME, leading elicitation, development, and management of... ...criteria, verifying delivered capabilities, and ensuring tests meet mission-critical goals while upholding DHS S&T quality standards. #J-18808-...SeniorRemote work
- ...advanced technology company is seeking a Senior Technical Director to lead the... ...development of spacecraft electronics systems. The role involves defining technical strategies... ...and overseeing development for mission-critical electronics across space and defense applications...Senior
- 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
- Leidos is seeking an experienced Systems Engineering SME to provide technical leadership... ...and modernization efforts for a mission-critical application. The role requires monitoring... ...with end users and contractors across security, cloud provisioning, and external interfaces...SeniorFor contractors
- ...multiple construction projects. The role emphasizes ensuring compliance with client, design, and regulatory requirements across Mission Critical, Health Care, and TI projects. The ideal candidate will manage QA/QC teams, write project-specific quality plans, and drive...Senior
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$120k - $180k
...is hiring a Network Administrator to own the design, implementation... ...at the core of our IT and security operations; you'll... ..., secure, and mission‑ready. You'll work closely... ..., embedded alongside systems engineers,... ...education and/or training, critical skills, and/or business...SeniorWork experience placementCasual workRelocation package- 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
- ...technology solutions provider, is seeking a Senior SQL Database Engineer in Washington, DC.... ...datasets, oversee DB architecture, tuning, and security, and mentor a team to deliver reliable data infrastructure for mission-critical programs. You will collaborate with...Senior
- ...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
- ...Information Technology is seeking a Technical DevSecOps Manager to lead agile teams in the transformation of mission-critical systems for a national security customer. The role requires extensive experience in DevOps practices, CI/CD pipeline ownership, and security integration...Senior
- ...seeking a Sr. UI/IX Engineer on the Chinook Program to shape mission-critical user interfaces for an Intelligence Community customer. You will... ...that enable mission users to interact with complex systems and data more effectively. The role blends design, frontend development...Senior
- 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$150k - $200k
MTSI is seeking a Senior Systems Administrator - COMSEC Specialist whose primary function will be to... ...implement a network architecture to support mission critical needs for the development of... ...routing/firewall modifications) for secure communications.Evaluate the threats...SeniorContract work- ...The organization in Washington, DC seeks a Systems Administrator to support the server compute environment, ensuring high availability, performance, and security for mission-critical operations. You will install, configure, and maintain server systems, troubleshoot issues...Senior
- ...Booz Allen Hamilton seeks an experienced system administrator to lead enterprise-level IT infrastructure for a mission-critical customer. You will manage Windows-based systems, perform Tier I/II support, monitor performance, apply patches, and document configurations...Senior
$75k - $85k
...Senior Systems AdministratorTechFlow Inc. is an employee... ...owned company delivering mission-critical technology,... ...seeking a Senior Systems Administrator to play a key role in... ...powering the platform that securely collects, analyzes,... ...of enterprise IT infrastructure supporting...SeniorRemote work$126.4k - $189.6k
Stantec’s Buildings team is on a mission to become the world’s leading integrated... ...Stantec.Your OpportunityThe MCF (Mission Critical Facilities) Senior Electrical Engineer, guides the... ...and develop solutions for multifaceted systems and interactions with varied disparate...SeniorFull timeTemporary workPart timeCasual workWork at officeLocal areaFlexible hours- ...Windows and Linux servers, databases, and mission‑critical systems. Manage virtualization environments (... ...solutions (Rubrik). Ensure system security by monitoring, remediating... ...years of experience as a Windows Systems Administrator. Strong knowledge of AWS infrastructure...Senior
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