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Lead Systems Architect

2 months ago

Washington, Washington, D.C., United States ManTech Full time

Join Our Mission to Secure the Nation

Become a vital member of a diverse team at an industry-leading organization where employee welfare is paramount. At ManTech International, you will contribute to national security efforts while engaging in innovative projects that provide avenues for professional growth.

We are currently seeking a dedicated and career-focused Senior Systems Engineer to support a significant U.S. Government initiative within the National Capitol Region.

Key Responsibilities:

  • Process change requests and troubleshoot issues as directed by various components, including the Justice Security Operations Center (JSOC), while managing requests related to proxy services, DNS, SSL, and firewall configurations.
  • Oversee high-volume SMTP relay operations, handling over 1 million messages daily.
  • Administer the Proofpoint mail security platform.
  • Identify and resolve mail delivery challenges across multiple security layers.
  • Monitor and manage mail routing through an LDAP directory.
  • Investigate user connectivity problems utilizing log analysis.
  • Collaborate with partner organizations to conduct thorough IT investigations.
  • Work alongside partners to modify IT system policies.
  • Supervise and manage the Infoblox DNS system along with general BIND/DNS functionalities.
  • Employ the Xymon monitoring system to detect potential issues and investigate problems.
  • Configure Xymon and develop new monitoring modules.
  • Implement Dynatrace and SNMP-based monitoring solutions.
  • Maintain archival logging for network systems.
  • Deploy a Zscaler Zero Trust solution for TIC 3.0.
  • Manage IP address allocations using IPAM.
  • Administer Unix/Linux operating systems.

Essential Qualifications:

  • Proven experience with Zscaler Zero Trust solutions.
  • A bachelor's degree in Computer Science, Management Information Systems, or a related field.
  • A minimum of seven years of experience in a relevant technical environment.
  • Hands-on experience with configuring and troubleshooting network proxies and firewalls.
  • Experience in the design, installation, maintenance, and management of network systems.
  • Ability to evaluate complex hardware, software, and peripheral equipment for large-scale networks.
  • Demonstrated experience in managing network performance.
  • Proficient in troubleshooting and resolving intricate issues to ensure high-quality network transmission.
  • Experience in managing user accounts and maintaining system security protocols across platforms.
  • Demonstrated ability to implement and manage network policies, procedures, and standards.

Security Clearance Requirements:

  • Must be a U.S. citizen.
  • Must possess an active Top-Secret clearance.

Physical Requirements:

  • Ability to remain stationary for more than 50% of the time.
  • Effective communication skills to interact with peers and senior personnel.
  • Frequent operation of a computer and other office equipment.
  • Regular communication with co-workers, management, and clients, which may involve delivering presentations.
  • Occasional mobility within the office to access files and equipment.

The projected compensation range for this position is $143,600-$239,300. Various factors may influence the final salary, including contract wage determination, relevant experience, skills, geographic location, education, and certifications. Additionally, ManTech offers a comprehensive benefits package, which may include health insurance, life insurance, paid time off, holiday pay, short-term and long-term disability, retirement savings, and professional development opportunities.

For positions requiring access to technology or software subject to export control laws, employment is contingent upon verifying U.S. person status or obtaining necessary licenses. Applicants will be required to provide information for compliance with federal law.

ManTech International Corporation and its subsidiaries are equal opportunity employers. We do not discriminate against any employee or applicant based on race, color, sex, religion, age, sexual orientation, gender identity, national origin, marital status, disability, or veteran status.

If you require reasonable accommodation to apply for a position with ManTech, please contact our Corporate EEO Department.