Job Description :
Position: Senior Wireless Engineer
Location: Washington, DC
Employment Type: contract


Job Description:
Position requires the design of effective and efficient, high throughput, wireless systems in challenging outdoor and indoor environments. The primary focus is on 2.4GHz and 5GHz 802.11 technologies however knowledge of other wireless technologies including CSS and FHSS is also essential.

WIRELESS SYSTEM DESIGN
Position requires the design of effective and efficient, high throughput, wireless systems in challenging outdoor and indoor environments. The primary focus is on 2.4GHz and 5GHz 802.11 technologies however knowledge of other wireless technologies including CSS and FHSS is also essential.
This requires the following skills:
Knowledge of radio frequency theory and wave propagation
Knowledge of antenna fundamentals
Ability to resolve and/or control radio frequency interference from co-channel and outside interference sources
Ability to perform active and passive site surveys and apply data from surveys to create effective wireless designs
Knowledge of and experience using propagation analysis software to create designs
Knowledge of and experience using spectrum analyzers to assess environments
Ability to perform site surveys to qualify and optimize wireless designs

WIRELESS ARCHITECHURE DESIGN
Position requires the design, installation and configuration of Cisco and other vendor wireless control architecture. This includes wireless controllers and devices and software used for monitoring and data collection.
This requires the following skills:
Extensive knowledge of Cisco wireless controllers including the Cisco 5500 series. This includes the ability to create new wireless LANs, configure anchor controllers, configure FlexConnect APs, and configure wireless security and authentication.
Thorough knowledge of Cisco wireless access points including all current series models. Ability to deploy and configure lightweight and autonomous access points.
Thorough knowledge of Cisco Prime or WCS.
Thorough knowledge Cisco Mobility Services Engine.
Knowledge of switches and routers. This includes knowledge of trunks and aggregated ports.
Knowledge of networking fundamentals including subnets, protocols, and standards



WIRELESS SECURITY:
Position requires the ability to create secure WLANs for multiple scenarios. The security types and requirements may vary by application and client.
The following skills are required:
Thorough knowledge of 802.1X/802.11i standards
Knowledge of firewall applications and uses
Ability to configure WLANs using PEAP and RADIUS servers
Ability to use tools to detect rogue access points
Ability to use tools to detect various forms of wireless attacks

NEW PRODUCT ACCEPTANCE
Position requires the ability to evaluate new devices and/or systems using or potentially affecting the existing wireless networks. This includes the ability to effectively measure performance and impact of any new device.
This requires the following skills:
Ability to create custom test networks and WLANs for lab testing of new devices.
Ability to measure performance and impact of devices using data collection tools in Prime or other monitoring systems.
Ability to measure performance and impact of devices using throughput measuring tools.
Ability to measure performance and impact of devices using spectrum analyzers

CLIENT AND SYSTEM PROBLEM RESOLUTION
This position requires the ability to resolve many types of system and client issues. This requires the ability to use multiple tools including monitoring tools to analyze data to determine causes of system and client issues.
This requires the following skills:
Knowledge of and ability to use Cisco debug commands to analyze issues
Knowledge of and ability to use spectrum and 802.11 analyzers
Knowledge of and ability to use data collection tools in WCS or Cisco Prime to detect and resolve issues
Knowledge of and ability to use various wireless client tools to detect and resolve issues

MINIMUM POSITION REQUIREMENTS
10 years wireless design experience with no less than 5 years designing 802.11 networks
Knowledge of radio frequency theory
Understanding of wave propagation
Knowledge of antenna theory
Experience with and ability to use Propagation analysis software
Experience with and ability to use spectrum analyzers and 802.11 analyzers
Understanding of the types of radio frequency interference and the ability to resolve radio frequency interference
Thorough understanding of 802.11 standards including 802.11a,b,g,i,and n
Thorough understanding of wireless security including 802.11X and 802.11i
Extensive understanding of and 5 years working with Cisco enterprise wireless architecture including wireless controllers, access points and Wireless Control System or Prime
Knowledge of networking including, TCP/IP, subnets, switches and routers

Tasks Specific to this requirement:

1.1 Design and implementation of Wireless networks for WMATA facilities
1.1.1 Conduct surveys and readiness assessments
1.1.2 Develop a problem definition
1.1.2 Use systematic troubleshooting techniques to pinpoint the problem
1.1.3 Utilize wireless troubleshooting tools to isolate wireless issues
1.1.4 Identify and mitigate sources of RF interference.
1.1.5 Design, configure and implement wireless network solutions
1.1.6 Provide post implementation network diagnostics and support