**MANTECH** seeks a motivated, career and customer-oriented **Senior Systems Engineer** to join our team in **Chantilly, VA** . The position is **onsite** .

**Responsibilities include but are not limited to:**

+ Provide Tier III IT Systems support for customer Linux or Red Hat Enterprise Linux (RHEL) server environments

+ Install, configure, maintain, and optimize Linux and RHEL Server environments to ensure reliable and secure infrastructure

+ Diagnose and resolve the performance, security, and/or technical challenges related to the platforms listed above

+ Monitor performance, capacity, and backups; perform test restores and implement system updates, patches, and improvements

+ Investigating and resolving operational problems in conjunction with other engineering and technical personnel

+ Lead the development and documentation of system processes and train team members to ensure operational consistency and knowledge transfer

+ Writing Standard Operating Procedures (SOPs) to accomplish repeatable tasks

+ Working on project teams responsible for engineering and packaging releases to integrate within the customer’s production IT environment

+ Contribute to strategic planning, solve complex technical problems, and lead Linux and RHEL engineering projects or functional teams when required

+ Participating in processes throughout all phases of the ITIL Service Lifecycle, including submitting Change Requests

+ Performing requirements analysis, requirements gathering, and integration for all platforms listed above

+ Willingness to occasionally work after normal duty hours (nights and weekends) to support system maintenance or service outages

**Minimum Qualifications:**

+ Bachelor’s degree with 5+ years of relevant Linux or RHEL experience, an Associates degree with 8+ years of experience, or a High School Diploma with an 11+ years of experience may be substituted for a Bachelor's degree

+ Hands-on experience or knowledge with configuration and implementation at command-line interface, of Linux or RHEL Server technologies within an on-premise infrastructure

+ Experience with Active Directory, Domain Name System (DNS), and Dynamic Host Configuration Protocol (DHCP)

+ Experience performing Linux and RHEL server upgrades, migrations, and deployments

+ IAT Level III/DoD 8140 Advanced certification, e.g., SecurityX or CASP+ within 6 months of hire

+ DoD 8570 Computing Environment certification within 6 months of hire

**Preferred Qualifications:**

+ Red Hat Certified System Administrator (RHCSA) certification

+ Experience with scripting languages such as Bash, Python, or Perl to automate system tasks

+ Familiarity with configuration management tools like Ansible to maintain system baselines

+ ITIL v.3 Foundations or later certification highly desired

+ Experience using a Service Desk ticketing system, such as TrackIT or ServiceNow

+ Previous customer service experience strongly desired

**Clearance Requirements:**

+ Must have a current and active Top Secret clearance, and be willing and able to obtain a CI polygraph

**Physical Requirements:**

+ The person in this position must be able to remain in a stationary position 50% of the time

+ Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations

MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.