**MANTECH** seeks a motivated, career and customer-oriented **Lead System Engineer** to join our team in **Laurel, MD.**

The Lead System Engineer will oversee, maintain, and modernize enterprise server infrastructure across both on-premises and AWS cloud environments, delivering mission-critical administration, systems integration, automation, and security compliance to support program objectives.

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

+ Overseeing and maintaining enterprise server infrastructure operating across hybrid environments, including both on-premises hardware and AWS cloud environments.

+ Administering, troubleshooting, and maintaining Linux (Amazon Linux 2023, RHEL 8/9) and Windows Server (2016/2022) operating systems alongside core directory and network services including Active Directory, DNS, and Group Policy.

+ Designing and executing automation scripts and infrastructure workflows utilizing Salt, BASH, Python, and Ansible to optimize system efficiency and reduce operational overhead.

+ Ensuring continuous system security compliance through active IAVA remediation, vulnerability management, and alignment with enterprise security baselines.

+ Providing expert-level technical resolution for complex, intertwined systems issues while collaborating effectively across cross-functional engineering teams.

+ Supporting DevOps and enterprise service capabilities by maintaining GitLab CI/CD pipelines, Windows enterprise services (IIS, AD CS, AD FS), and Apache NiFi data flows.

+ Managing concurrent priorities independently in a fast-paced mission environment while delivering clear, effective technical documentation and communication.

**Minimum Qualifications:**

+ Bachelor’s degree in Systems Engineering, Computer Science, or a related discipline with 14+ years of experience as a Systems Administrator or Cloud Engineer on programs of similar scope (or 19+ years of total systems engineering experience in lieu of a degree).

+ Active DoD IAT Level II certification (e.g., Security+ CE) or the ability to obtain certification within 60 days of program start date.

+ Demonstrated hands-on expertise administering Linux operating systems

+ Proven experience administering and supporting Windows Server environments, including Active Directory, DNS, or Group Policy management.

+ Extensive technical experience managing, deploying, and supporting enterprise infrastructure within AWS cloud environments.

+ Proficiency in infrastructure automation and scripting utilizing Salt, BASH, Python, or Ansible.

+ Strong technical background executing IAVA remediation, applying security controls, and working with enterprise monitoring tools such as Splunk or HCL BigFix.

**Preferred Qualifications:**

+ Hands-on experience with AWS Infrastructure as Code (IaC) tooling, specifically AWS CloudFormation and AWS Packer.

+ Experience configuring and managing GitLab and GitLab CI/CD automation pipelines.

+ Familiarity with enterprise data flow architectures and pipeline integration utilizing Apache NiFi.

+ Working knowledge of advanced Windows enterprise services, including IIS, Active Directory Certificate Services (AD CS), and Active Directory Federation Services (AD FS).

**Clearance Requirements:**

+ An active TS/SCI with Polygraph

**Physical Requirements:**

+ Must be able to remain in a stationary position 50% of the time.

+ Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

+ Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

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.