Currently, ManTech is seeking a motivated, career and customer-oriented Network Engineer, Mid-level to join our team in Annapolis Junction, MD.

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

+ Analyze Network access trends and resolve bandwidth management issues for mission critical systems.

+ Implement, troubleshoot, monitor, and maintain all aspects LAN/WAN/VPN/ networks for high availability of parallel development, testing and production environments.

+ Review SNMP alerts, use protocol-line analyzers (sniffers) and conduct log forensics to determine root cause analysis and resolution of complex issues.

+ Collaborate with Software and Database Developers, Windows and Linux Server Administrators and Security personnel to analyze Systems Development Life Cycle (SDLC) requirements, troubleshoot anomalies and determine appropriate firewall configuration implementation.

+ Draft and submit recommended change request proposals necessary for timely mitigation of POA&Ms and CVE findings.

+ Maintain system compliance with DHS\FISMA IT Security and Information Assurance objectives concerning privacy of passenger screening information.

+ Installs new releases and system upgrades, evaluates, and installs patches, and resolves network related problems.

+ Perform system backups and recovery.

+ Maintains data files and monitors system configuration to ensure network integrity.

+ Has knowledge of commonly used concepts, practices, and procedures within a particular field.

+ Experienced in executing sound judgment to plan and accomplish goals.

+ Perform a variety of tasks and work under general supervision.

+ A certain degree of creativity and latitude is required. Typically reports to a project leader or manager.

**Basic Qualifications:**

+ Experience in network troubleshooting and network management tools.

+ Knowledge of networking concepts including VLANs, Switch ports, LAN, WAN, and VPN.

+ Experience managing, monitoring, and troubleshooting an enterprise network on Cisco hardware.

+ Minimum 2 years of experience analyzing, implementing, and troubleshooting firewall rules on Cisco devices.

+ The ideal candidate will have the ability to work on individual tasks, as well as team-oriented tasks, to prioritize competing priorities, work under a cross-matrix management structure, required to be on-call and respond in a timely manner, should be a quick learner, must be able to adapt to quickly evolving technology and priority changes and have a desire to work closely with other members of the IT/development team.

+ Candidate should be a proactive self-starter with exceptional follow up skills.

**Preferred Qualifications:**

+ Knowledge of Network Automation

+ Routing experience to include static routes, EIGRP and route redistribution.

+ Switching experience to include understanding of virtual port-channels (vPC aka MEC), spanning tree, first hop redundancy protocols, and security best practices.

+ Experience with firewall concepts and configurations to include creating/modifying access control lists, network/port address translation, and virtual private networks.

+ Experience with load balancing concepts and configurations to include layer4/layer7, SSL offloading, and health monitoring.

+ Monitoring of all network components via SolarWinds.

+ A bachelor’s degree or equivalent in Computer Science, Information Systems, Engineering, Business, or other related scientific or technical discipline with 5 or more years related professional experience.

+ Education can be substituted for 9 years of experience and should have attained associate or professional level certifications from Cisco, Juniper, or other vendors.

+ Specific hardware:

+ Cisco DNA Center

+ Cisco 4100 Firepower

+ Catalyst 9000

+ Cisco Firepower Management Center

+ Switching: Cisco 4500-E/4500R+E/3850/3750X/3560X

+ Firewalls: Cisco ASA 5555X/5545X/5525X+FirePOWER

+ Load balancers: F5 LTM, KEMP VLM

**Clearance Requirements:**

+ Active DOD Secret clearance and ability to obtain agency suitability clearance

**Physical Requirements:**

+ Must be able to remain stationary up to 75% of the time in an office environment.

+ Must be able to traverse between one work location to another to accomplish work duties.

+ Must be able to operate IT equipment such as a computer, copier, fax machine, etc.

+ Must be able to communicate effectively with management and co-workers to exchange information accurately.

+ Must be able to read, review and effectively respond to electronic as well as verbal communications.

+ This position supports an IT operations environment. Candidates may need to support work on nights and weekends and may be included in an on-call rotation for after-hours support.

+ Currently, the contract work location requirement is to work in the office at the customer’s site once weekly at a minimum. This is subject to change.