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Tier 3 Network Engineer Security Clearance

Job in Aurora, Arapahoe County, Colorado, 80010, USA
Listing for: Dexian Signature Federal
Full Time position
Listed on 2025-12-15
Job specializations:
  • Engineering
    Systems Engineer, Cybersecurity
  • IT/Tech
    Systems Engineer, Cybersecurity
Job Description & How to Apply Below
Position: Tier 3 Network Engineer with Security Clearance
Location: Aurora

Tier III Operations and Maintenance (O&M) engineers to support various customer Wide Area Networks (WANs) and Local Area Networks (LANs) in providing network upgrades and configuration support to the architecture team; act as subject matter expert in WAN and LAN technologies and vendors; support customer’s intra- and inter- net and other data communications systems or segments of networked system; and by providing tiered support for the Network Operations Centers (NOCs).

Job duties/responsibilities of Tier III O&M engineers include:
Potentially supervising other network support and client server specialists and planning, coordinating, and implementing network security measures
Participation in evaluation of new network technologies and making recommendations to the network architecture team regarding the integration of these technologies into the existing network. Ensuring that plans for hardware and communications are adequate. Developing and implementing methodologies for analysis, testing, and support of LAN and WAN networks.
Diagnosing hardware and software problems, and replacing defective components
Supporting operations, maintaining activities, and administering networks to include hardware, systems software, applications software, and all configurations
Monitoring system and network performance
Supporting routine network startup and shutdown procedures and maintaining control records
Configuring and testing hardware, networking software, and operating system software
Preparing technical proposals for presentation to the engineering review boards for adding new technologies to the network
Performing a full range of upgrades in accordance with existing network architecture
Reviewing user requests for upgrades or additions to the network to assess impact on network performance and providing advice and guidance on the most practical technical approach to meeting user requirements
Performing long-term O&M activities to include tier III troubleshooting and problem resolution
Utilizing complex network analysis tools to identify and correct problems in the network while maintaining logs and records associated with reported problems or situations
Preparing troubleshooting procedures for restoring the network to optimal performance levels
Providing fault management for the network and supports performance management functions
Responding, isolating, and resolving network troubles
Monitoring alarms and alerts to identify network elements causing network degradation or failure
Executing report functions and data input associated with network management
Monitoring the security posture of the network and reporting suspected violations to designated authorities
Coordinating with configuration management and implementation teams
Performing operator-level maintenance on components for network management systems
Analyzing network characteristics (e.g., traffic, connect time, transmission speeds, packet sizes, and throughput), recommending procurement, removals, and modifications to network components
Optimizing network topologies and site configurations. Planning installations, transitions, and cutovers of network components and capabilities
Coordinating requirements with users and suppliers
Organizing and directing network installations on site surveys
Assessing and documenting current site network configuration and user requirements
Maintaining operating systems, communications software, data base packages, compilers, assemblers, and utility programs
Applying software, hardware, and standards information technology skills in the analysis, specification, development, integration, and acquisition of open systems for Information Management (IM) applications
Ensuring systems and applications are compliant with standards for open systems architectures, reference models, and profiles of standards. These include the Institute of Electrical and Electronics Engineers (IEEE) Open Systems Environment (OSE) reference model, as they apply to the implementation and specification of IM solutions on the application platform, across the application program interface (API), and the external environment/software application
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