Senior Systems Engineer - ManTech
Washington, DC
About the Job
Currently, ManTech is seeking a motivated, career and customer-oriented Senior Systems Engineer to join our team supporting a large U. S. Government program within the National Capitol Region.
Responsibilities include, but are not limited to:
+ Submit change requests and troubleshoot as requested by components, the Security Operations Center (SOC), and others: forward proxy, reverse proxy, DNS, SSLV, and firewall requests to the Telecommunications provider for the WAN.
+ Manage high-volume (more than 1M messages per day) SMTP relays.
+ Manage the Proofpoint mail security system. Also diagnose mail delivery issues through several layers of security.
+ Monitor and manage mail routing using an LDAP directory.
+ Diagnose user connectivity issues using logs.
+ Monitor and manage Infoblox DNS system as well as general BIND/DNS functionality.
+ Configure and utilize the Xymon monitoring system to evaluate any potential issues and investigate any problems.
+ Perform Dynatrace and SNMP-based monitoring.
+ Maintain archival logging for network systems.
+ Implement a Zscaler Zero Trust solution for TIC 3.0 deployment.
+ Manage IP Address allocations with IPAM
+ Administer and manage Unix/Linux operating systems.
+ Manage and monitor Zscaler environment; Deploy and maintain Zscaler related physical and virtual machines to include but not limited to: ZPA connectors; LSS connectors; NSS systems; Private Service Edges (ZPA & ZIA)
Basic Qualifications:
+ A bachelor’s degree in computer science or management information systems or equivalent discipline
+ A minimum of (7) seven years of IT experience and must have 4 years experience supporting networks and network security solutions and tools.
+ Hands on experience using tools / technologies such as: Zscaler, Inflobox, Dynatrace, ProofPoint, Cisco, Xymon, MS IPAM and Unix/Linux.
+ Direct experience configuring and troubleshooting forward and reverse proxies and network firewalls
+ Experience with the design, installation, maintenance, and coordination of the use of aTIC
+ Experience evaluating complex hardware and software and peripheral equipment for large, complex networks.
+ Proven experience managing network performance.
+ Experience troubleshooting and resolving complex problems to ensure quality transmission service on the network.
+ Experience managing, maintaining, creating, and deleting user accounts as well as maintaining and updating system security plans on all platforms.
+ Proven experience implementing and managing network policies, procedures, and standards.
Security Clearance Requirements:
+ Must be a U.S. citizen
+ Must possess and maintain an active Top-Secret clearance
Physical Requirements:
+ Must be able to be in a stationary position more than 50% of the time
+ Must be able to communicate, converse, and exchange information with peers and senior personnel
+ Constantly operates a computer and other office productivity machinery, such as a computer
+ 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
+ The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
Responsibilities include, but are not limited to:
+ Submit change requests and troubleshoot as requested by components, the Security Operations Center (SOC), and others: forward proxy, reverse proxy, DNS, SSLV, and firewall requests to the Telecommunications provider for the WAN.
+ Manage high-volume (more than 1M messages per day) SMTP relays.
+ Manage the Proofpoint mail security system. Also diagnose mail delivery issues through several layers of security.
+ Monitor and manage mail routing using an LDAP directory.
+ Diagnose user connectivity issues using logs.
+ Monitor and manage Infoblox DNS system as well as general BIND/DNS functionality.
+ Configure and utilize the Xymon monitoring system to evaluate any potential issues and investigate any problems.
+ Perform Dynatrace and SNMP-based monitoring.
+ Maintain archival logging for network systems.
+ Implement a Zscaler Zero Trust solution for TIC 3.0 deployment.
+ Manage IP Address allocations with IPAM
+ Administer and manage Unix/Linux operating systems.
+ Manage and monitor Zscaler environment; Deploy and maintain Zscaler related physical and virtual machines to include but not limited to: ZPA connectors; LSS connectors; NSS systems; Private Service Edges (ZPA & ZIA)
Basic Qualifications:
+ A bachelor’s degree in computer science or management information systems or equivalent discipline
+ A minimum of (7) seven years of IT experience and must have 4 years experience supporting networks and network security solutions and tools.
+ Hands on experience using tools / technologies such as: Zscaler, Inflobox, Dynatrace, ProofPoint, Cisco, Xymon, MS IPAM and Unix/Linux.
+ Direct experience configuring and troubleshooting forward and reverse proxies and network firewalls
+ Experience with the design, installation, maintenance, and coordination of the use of aTIC
+ Experience evaluating complex hardware and software and peripheral equipment for large, complex networks.
+ Proven experience managing network performance.
+ Experience troubleshooting and resolving complex problems to ensure quality transmission service on the network.
+ Experience managing, maintaining, creating, and deleting user accounts as well as maintaining and updating system security plans on all platforms.
+ Proven experience implementing and managing network policies, procedures, and standards.
Security Clearance Requirements:
+ Must be a U.S. citizen
+ Must possess and maintain an active Top-Secret clearance
Physical Requirements:
+ Must be able to be in a stationary position more than 50% of the time
+ Must be able to communicate, converse, and exchange information with peers and senior personnel
+ Constantly operates a computer and other office productivity machinery, such as a computer
+ 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
+ The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
Source : ManTech