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Sr Network Engineer

| North Suburbs

Sr. Network Engineer

The responsibility of this position is for designing, implementing and supporting the data communication infrastructure used to support Grainger’s business objectives. This position will ensure maximum availability, reliability, and performance of related infrastructure, systems and network-related applications.

An Engineer is required to possess knowledge of Wide Area Network (WAN) and Local Area Network (LAN) concepts and related hardware and software. Responsibilities include, but are not limited to, working with technologies such as DWDM, DMVPN, routers, layer 2-7 switches, load balancers, application optimization, DNS, network management platforms, network protocols like IPv4 and IPv6, wireless networking technologies and security, and the ability to track and trace problems using network packet captures.

They must be familiar with WAN technologies such as MPLS, T1, DS3, DWDM and Ethernet, and should exhibit a strong understanding of LAN concepts such as trunking, spanning tree, QoS, Multicast, layer 2 and layer 3 switching, virtual port channels, virtual switching, and BGP, EIGRP and OSPF routing protocols. 

Advanced Engineering includes network capacity planning, network performance and measurement skills, ability to resolve complex problems, strong network management knowledge, diagnostics and debugging, an understanding of distributed systems management techniques, and an understanding of change management and problem management concepts. Must be able to design, document, implement, and support stated data network technologies. Working knowledge of server OS’s such as VMWare, Windows, and UNIX skills are a plus.


Preferred Education & Experience:

  • Must be proficient with Cisco IOS and NX-OS configuration and troubleshooting
  • Proficient F5 load balancing experience
  • Infoblox DNS experience
  • Usage and experience with NetScout for network monitoring and troubleshooting
  • Background in protocols/codes to include TCP/IP, EIGRP, BGP, OSPF, MPLS, RTP, RTCP, VRRP, ANSI, ETSI, H.323, SIP, G.711 and G.729
  • Strong oral and written communication skills, with the ability to communicate to various levels of management
  • Ability to work on cross-functional teams
  • Ability to adapt technologies to meet changing business processes, and environments
  • Strategically identify and meet business needs through use of cost effective technology in a timely manner
  • Excellent organizational skills
  • Can perform advanced troubleshooting skills and resolve complex network problems
  • Ability to learn quickly and adapt
  • Ability to explain and escalate unresolved problems or questions
  • Strong interpersonal skills
  • Bachelor’s Degree or equivalent work experience
  • 7x24 hour availabity by mobile phone

“Grainger is an Equal Opportunity / Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, gender identity, sexual orientation, disability, or protected veteran status.”




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The Ogilvie Train Station has its perks with metra in building and 5 blocks to the L. You can get to the French Market without stepping outside.