Open Systems Technologies Corporation · 19 hours ago
Systems Administrator
Annapolis Junction, MD
Full-time
Onsite
Senior Level, Lead/Staff
8+ years expOpen Systems Technologies Corporation is a leader in the government contracting marketplace, providing Enterprise Security and Cloud Computing solutions. They are looking for a Systems Administrator to maintain system administration support activities for a large complex network environment and ensure operational needs are met while upgrading capabilities.
ConsultingInformation TechnologySoftware
No H1B
U.S. Citizen Only
Responsibilities
The selected individual will be responsible for installing and administrating systems, applications, and processes, and for ensuring that all issues are identified and resolved in a timely manner
She/he will be responsible for ensuring server and desktop configurations are optimized and running continuously and efficiently
The individual will also perform security management and application performance optimization functions
Administration/sustainment of a system that provides a web-based application for storing, sharing, and distributing information
Creating and maintaining complex server enclaves, including analyzing system scanning reports, patching, cert renewals, vulnerability management assessments, and active directory configurations
Identifying and correcting hardware and software issues
Responding to system administration, operations, and maintenance problems, and developing re-work solutions
Creating and maintaining documentation of complex server/network environments to ensure that clear, concise and accurate information is readily available for incident resolution
Communicating with users and external support personnel regarding system outages and upgrades and conferring with upper management regarding recommended resolution options
Qualification
Required
Must have at least 8 years of relevant experience
Must have experience as a systems administrator providing direct support to end users and technical staff (developers, testers, engineers, etc.)
Must be proficient with Windows Server 2012R2, 2016, 2019, and Active Directory
Must have experience with Linux and Microsoft-based servers and workstations
Must have experience with Windows 2019
Must have experience with OS and Application Hardening to include DISA, Best Practices, and High Assurance environments
Must have experience with software/hardware deployment, patches, and operating systems, and basic system backup and restore functions
Must have experience with and/or be familiar with SALT, Ansible, Splunk, Puppet, SolarWinds, Nessus
Must have experience with and/or have knowledge of Red Hat 7 and 8, and VMWare
Must have experience with Apache Tomcat, IIS, and/or SQL server database
Must have experience documenting and providing information for security accreditation and certification
Must have a solid understanding of advanced security protocols and standards
Must have experience with Network Security Technologies (e.g. Multiple Domain, PKI, SSP, and Vulnerability Assessment)
Must have experience with High Assurance platforms and application integration testing methods
Must have experience with both Client and Server virtualization environments
Must be able to lift up to 50 lbs
Must have experience with installation, configuration, troubleshooting, and reimaging hardware
Must have experience with disk arrays, PowerShell and PowerCLI, KVMs
Must have knowledge of PKI systems which use HSMs to validate key and NTP for synchronization
Must have experience optimizing system operations
Must have a solid understanding of information security principles and practices
Must have experience with or familiarity with software and security architectures
Must have experience or familiarity with the following systems: Windows/Linux operating systems, VMware, and Networking: Switches, Routers, LANs, & cabling
Must be able to support occasional day or short duration travel, if needed
Preferred
Bachelor's Degree or Master's degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related technical field
Proficiency with SQL Server desired
Benefits
3 weeks paid time off
11 Federal Holidays
Medical/dental coverage
STD
LTD
Life Insurance
AD&D
401k with up to 4% match
End-of-year profit sharing
Company
Open Systems Technologies Corporation
Open Systems Technologies (OST) Corporation is a technology solutions company that has been providing customized, high-end security solutions to large-scale enterprises since 1996.
51-200 employees
Funding
Current Stage
Growth StageLeadership Team
Thomas R. Truitt
Owner / Founder / Servant-of-All
Recent News
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2025-09-25
2025-09-23
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