Secure our Nation, Ignite your Future

　　Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International Corporation, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement.

　　Currently, ManTech is seeking a motivated, career and customer-oriented Sr. Red Hat Linux/AIX Systems Engineer to join our team in Annapolis Junction, MD.

　　Responsibilities include, but are not limited to:

　　Maintains a thorough and well-rounded knowledge of all Linux operating systems with Red Hat version expertise along with a solid understanding of the mechanisms required for distribution of new and upgraded software.

　　Writes Shell Scripts to automate repetitive tasks, manages user account information, including rights, security, and systems groups.

　　Assist in the evaluation and implementation of new technologies to optimize the Linux operating system environment

　　Manage, configure, administer, support and troubleshoot Linux servers.

　　Works with senior staff to recommend and design system architecture and topology perspectives building and supporting the Red Hat Enterprise Linux (RHEL) enterprise

　　Works closely with various IT groups including but not limited to project management, database administration, network, security, and application teams assisting in the overall architectural design

　　Defines and maintains server operations, processes, and procedures; service and operational level agreements and reports compliance and server build requirements as needed

　　Provide support and monitors performance and reporting, problem identification and resolution

　　Provide regular status reports, gather requirements, and provide input into the infrastructure products that are being procured and built out within the enterprise

　　Maintains operating system, infrastructure design documents along with SOPs (Standard Operating Procedures) for system administration activities

　　Leverage automation tools such as Kickstart and Puppet in the installation and maintenance of Server OS and configuration

　　Respond to service calls remotely using laptop over secure VPN

　　Provide root-cause analysis for recurring or critical problems

　　Mitigation and documentation of security POAMs

　　Basic Qualifications:

　　7-10+ years of RHEL systems administration experience, or equivalent experience

　　Experience RHEL 7.0 or later, performance monitoring and tuning tools, installation options, problem determination and recovery, and AIX security

　　Experience with IBM Power architectures, X-series and Blade center server technology.

　　Experience writing and debugging shell scripts in a standard UNIX shell

　　This position supports an IT operations environment. All employees should expect to support work on nights and weekends and may be included in an on-call rotation for after-hours support.

　　Preferred Qualifications:

　　A bachelors degree in computer science, information technology, or a related field.

　　Strong security background

　　Experience with Python

　　Docker/Kubernetes experience

　　Experience with NIM, satellite server and Kickstart

　　Experience with AIX 6.1 or later, performance monitoring and tuning tools, installation options, problem determination and recovery, and AIX security

　　Experience with AIX performance tuning and capacity planning

　　Experience with high availability architectures and concepts such as HACMP/PowerHA

　　Experience with Virtual IOS concepts and applications

　　Experience with enterprise backup/restore architectures and concepts including TSM as it pertains to AIX and RHEL

　　Experience with Logical Volume Manager, Storage concepts and SAN provisioning

　　Experience with IBM X-series and Flex System server technology.

　　Security Clearance Requirements:

　　Due to the nature of this government contract an Active DOD Secret clearance and the ability to obtain an agency specific suitability clearance is required.Physical Requirements:

　　Must be able to remain stationary up to 75% of the time in an office environment.

　　Must be able to traverse between one work location to another to accomplish work duties.

　　Must be able to operate IT equipment such as a computer, copier, fax machine, etc.

　　Must be able to communicate effectively with management and co-workers to exchange information accurately.

　　Must be able to read, review and effectively respond to electronic as well as verbal communications.

　　This position supports an IT operations environment. Candidates may need to support work on nights and weekends and may be included in an on-call rotation for after-hours support.

　　Currently, the contract work location requirement is to work in the office at the customer’s site once weekly at a minimum. This is subject to change.

　　For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

　　ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

　　If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

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