Senior Systems Administrator

7 days ago

Annapolis Junction, Maryland, United States Open Systems Technologies Corporation Full time
Job Description

Open Systems Technologies Corporation is a leading provider of Enterprise Security and Cloud Computing solutions to support large organizations. Our capabilities include supplying federal government entities and private businesses with software development, scientific and engineering technical assistance, systems integration and enterprise security.

We are seeking a highly skilled Senior Systems Administrator to join our high-performing agile team that uses the Scaled Agile Framework (SAFe) methodology to support a nationally significant and fast-paced program.

Key Responsibilities
  • Maintain system administration support activities for a large complex network environment with geographically distributed systems.
  • Support solutions for system engineering requests that continue to meet operational needs as well as upgrading and maintaining capabilities.
  • Install and administer systems, applications, and processes, and ensure that all issues are identified and resolved in a timely manner.
  • Ensure server and desktop configurations are optimized and running continuously and efficiently.
  • Perform security management and application performance optimization functions.
Additional Responsibilities
  • 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.
Required Qualifications
  • Clearance: TS/SCI w FS Poly
  • Previous experience as a systems administrator.
  • 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, 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 experience.
  • Proficiency with SQL Server desired.
  • Experience documenting and providing information for security accreditation and certification. Understanding of advanced security protocols and standards. Experience with Network Security Technologies (e.g. Multiple Domain, PKI, SSP, and Vulnerability Assessment).
  • Experience with High Assurance platforms and application integration testing methods.
  • Experience with both Client and Server virtualization environments.
  • Ability to lift up to 50 lbs.
  • Experience with installation, configuration, troubleshooting, reimaging hardware.
  • Experience with disk arrays, PowerShell and PowerCLI, KVMs,
  • Knowledge of PKI systems which uses HSMs to validate key and NTP for synchronization.
  • Must have direct experience providing assistance to end users.
  • 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.
  • Occasional day or short duration travel may be required.
Preferred Qualifications
  • Bachelor's Degree in System Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related technical field.

We offer a comprehensive benefits package that includes 3 weeks paid time off, 11 Federal Holidays, medical/dental coverage, STD, LTD, Life Insurance, AD&D, 401k with up to 4% match, and end-of-year profit sharing.

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