Senior Systems Engineer

General information

Requisition # R60622 Locations USA-AL-Huntsville Posting Date 05/21/2025 Security Clearance Required Top Secret Remote Type Onsite Time Type Full time

Description & Requirements

Transform the future of federal services with ManTech! Join a vibrant, energetic team committed to enhancing national security and public services through innovative tech. Since 1968, we’ve partnered with Federal Civilian sectors to deliver impactful solutions. Engage in exciting projects in Digital Transformation, Cybersecurity, IT, Data Analytics and more. Ignite your career and drive change. Your journey starts now—innovate and excel with ManTech!

ManTech seeks a highly skilled and knowledgeable Senior Systems Engineer that is responsible for maintaining system administration, identity and authentication, information system security accreditation, data storage and backup, physical infrastructure maintenance, and automation development, as well as system security and environment ATOs. This position is located on customer site in Huntsville, AL.

Responsibilities include but are not limited to:

• Accountable for system administration, identity and authentication, information system security accreditation, data storage and backup, physical infrastructure maintenance, and automation development.
• Enhance system operations through the design, development, and sustainment of new and existing system functionality to support configuration management, automated building, automated testing, automated deployment, and automated monitoring and notification.
• Develop and manage cloud-based infrastructure either in AWS or Azure.
• Complete patching and security remediations.
• Build new baselines with the appropriate security and access controls to include DISA STIGS and required security controls; develop and maintain security documentation for ATOs of the environment.
• Manage and deploy, evaluating, testing, certification, patching, addressing interoperability issues for servers, VM, storage and backup.
• Create and maintain network infrastructure for both bare-metal and virtual machines with the appropriate LAN, WAN, vLAN, SDN, firewall and load balancer configurations, using both OEM and third-party tools that include virtual network tools (NSX) and services.
• Monitor and test application performance and correct any bottlenecks or network issues and create recovery processes for failures and performance bottlenecks. Provide real time alerts for network problem issues and implement proactive solutions for future problems to include re-design or tech refresh.
• Develop and maintain custom scripts to increase system efficiency and increase automation of tasks.  Provide real time reporting of provisioned and non-provisioned resources such as bandwidth utilized to include performance metrics for availability, performance, and trends.

Basic Qualifications:

• 8+ years of IT experience with 4+ years as a systems engineer.
• 3+ years of hands-on experience with managing Windows Experience and experience managing MS Active Directory (AD)
• 3+ years of hands-on experience with NIST 800x special publications (e.g. NIST SP 800-53, NIST SP 800-37), FISMA and RMF guidelines.
• Hands-on experience with DNS, DHCP, LDAP, SMTP, and NTP.
• Experience with managing cloud infrastructure AWS or Azure.

Preferred Qualifications:

• Bachelor’s degree, preferably in IT, Engineering, Computer Science, Mathematics, or related discipline.
• Experience with system accreditation and authorization (A&A/ATO) process.
• Experience with GRC tools (RiskVision, Xacta and JCAM).
• Experience with VMWare vSphere 7.
• Experience with Cisco Networking.
• Experience with Dell Servers and Dell storage.
• Preferred Certifications:
  • Microsoft Windows Server Hybrid Administrator Associate
  • VMware Data Center Virtualization (VCP-DCV)
  • Cisco Certified Network Professional (CCNP)
  • Certified Information Systems Security Professional (CISSP).

Clearance Requirements:

• The ability to obtain and maintain an active Top Secret security clearance with SCI eligibility is required prior to starting this position.

Physical Requirements:

• Must be able to remain in a stationary position 50%
• Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer
• The person in this position 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.