Network Engineer II

  • Job Reference: 425408497-2
  • Date Posted: 18 November 2021
  • Recruiter: Johns Hopkins Medicine
  • Location: Bethesda, Maryland
  • Salary: On Application
  • Sector: Education/Training
  • Job Type: Permanent

Job Description

Position Summary:

Plan, forecast, implement, and identify resource requirements for network backbone infrastructures (inclusive of wireless technologies) of moderate complexity. The scope of this position typically affects the delivery of campus backbone network resources for a large number of local and wide-area connected buildings. Trouble-shoot, monitor and maintain network components and functionality on a campus/enterprise-wide level. Position provides consultation to IT users in designated business units for aspects of network connectivity functions, issues of increasing traffic, and determining the path between hosts across the network. Candidate communicates with end users about the scheduling and delivery of changes within the network topology and participates in the technical aspects of network changes and workflow. Design, implement change control processes, deploy and maintain network infrastructure in relation to requests for service in conjunction with vendors, technicians, and clients.


Bachelor's Degree. Additional experience may substitute for education.

Work Experience:

Five years of related experience.

Prefer experience with CISCO wireless, CISCO ISE, CISCO DNA spaces, LAN controllers.

Understand RF signal propagation and interference.

Prefer experience with realt time location services (RTLS).

BLE experience is a plus!

Knowledge, Skills and Abilities:

1. Must possess all requisite knowledge, skills, and abilities as posted in the supplemental section.
2. Must demonstrate strong critical thinking and analytical reasoning skills.
3. Ability to work on multiple priorities effectively.
4. Ability to prioritize conflicting demands.
5. Demonstrated track record of the ability to execute assigned project tasks within established schedule.
6. Ability to work collaboratively in a team environment.
7. Ability to communicate effectively in the service of users and colleagues in a positive manner.
8. Writes and communicates clearly and concisely.
9. Possesses sound documentation skills.
10. Ability to maintain confidentiality.
11. Demonstrated track record of exemplary customer service skills
12. Working knowledge of the OSI network model, Ethernet, and TCP/IP networking
13. Working knowledge of common network monitoring and security utilities
14. Working knowledge and experience in implementing and administrating common TCP/IP-based services, including DNS, DHCP, HTTP, FTP, SSH, SMTP, etc.
15. Working knowledge of Classless Internet Domain Routing (CIDR); ability to clearly explain and articulate CIDR
16. Demonstrated ability to successfully configure network devices in an enterprise production setting similar in scope, size and complexity as Johns Hopkins. Example of devices that may be configured, include: routers, switches, csu/dsus, content management switches, caching devices, firewalls, wireless controllers, access points, etc.
17. Moderate knowledge of Metro Ethernet, DWDM, optical and related technologies.
18. Working knowledge of MPLS.
19. Working knowledge of QOS.
20. Working understanding of different IPv4 addresses, inclusive of loopback, unicast, multicast, limited and directed broadcast.
21. Expert understanding of IPv4 and 32-bit numbers
22. Working knowledge of IPv6 and 128-bit numbers
23. Working knowledge of mainstream network troubleshooting tools, such as MRTG, Cacti, SmokePing, HP Overview, Cisco works, etc.
24. Working knowledge of routed and routing protocols; demonstrated ability to troubleshoot medium to complex IPv4 routing issues
25. Working knowledge of IP, Enhanced Interior Gateway Routing Protocol (EIGRP), Serial Line Interface Protocol Frame Relay, Routing Information Protocol Version 2 (RIPv2),VLANs, Ethernet, and access control lists (ACLs).
26. May configure and maintain network related systems that run Windows, Linux, or Unix as an operating system.
27. Working knowledge of Layer2 technologies and ability to clearly explain and articulate Layer2 strengths and weaknesses
28. Working knowledge and demonstrated ability to successfully design and implement solutions using the advanced feature set of Cisco wireless products and based on a validated understanding of radio frequency and antenna theory, 802.11a/b/g/n standards, site survey and configuration of controllers and APs. Solutions include voice over WLAN, outdoor mesh and secure wireless.
29. Working knowledge of detailed technical features, functions and benefits of a controller-based wireless architecture.
30. Working knowledge of how CSMA/CD functions operate.
31. Demonstrated track record of keeping abreast of current and leading edge networking and wireless technologies/methodologies as related to the existing breadth and scope of products used at Hopkins
32. Working knowledge of Multicast.
33. Troubleshooting moderately complex issues focused on determining hardware vs. software, hardware vs. firmware, software vs. operating system, network vs. application/systems, and patterned vs. non-repeatable problems
34. Follows standard practices and procedures in analyzing situations involving readily identifiable problems.
35. Demonstrated ability to install, configure, operate, and troubleshoot intermediate to moderately complex scale- route and switched networks, including implementation and verification of connections to remote sites in a WAN.
36. Working knowledge of how to implement and manage wireless controllers in a campus setting.
37. Working knowledge of user and certificate based authentication systems.
38. Working knowledge of redundant network technologies, such as HSRP, spanning tree, Vs, etc.
39. Working knowledge of supporting various load balancing technologies, such as CSM (Content Switching Modules), ACE (Application Control Engine), Advanced AP load balancing strategies, etc.
40. Working knowledge of wireless networking and a solid understanding of wireless LAN technologies.
41. Working knowledge of complex networking technologies within a production data center setting that serves thousands of users.

Johns Hopkins Health System and its affiliates are an Equal Opportunity / Affirmative Action employers. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity and expression, age, national origin, mental or physical disability, genetic information, veteran status, or any other status protected by federal, state, or local law.

Johns Hopkins Health System and its affiliates are drug-free workplace employers.