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Job Req ID:  106890

Network Engineer III

IT@JH Networking, Telecom and Data Center is seeking a Network Engineer III who is responsible for the overall design, configuration and troubleshooting of complex IT systems in the enterprise data centers as well as intercampus connectivity that impacts mission critical enterprise, academic, medical and research systems and application services.

Specific Duties & Responsibilities

  • Heavily involved in network virtualization and hybrid cloud technologies.
  • Will design, build and support virtual network connectivity. The applications consist of a multi-tiered architecture of firewalls and load balancers to achieve the highest performance, availability and security models possible.

Specific Devices, Software, Projects

  • Architect's solutions for all enterprise applications such as SAP, Blackboard, ISIS, EPIC, Exchange, EPR, Anycast DNS and DHCP.
  • Manages projects such as integrating or migrating new ISP and cloud solutions, deploying new network designs and other advanced network protocols in topologies that are unique to large academic and medical research institutions.

Scale/Size of Area, Project and/or System Supported

  • The enterprise data centers have over 20,000 active IP addresses across a geographically disperse network.
  • The enterprise network has grown to over 300,000 active ip addresses which the network engineer is responsible for the core connectivity allowing all campuses to connect within the enterprise intranet and internet routing domains.

On-Call Requirements

  • Expected to troubleshoot and repair any part of the network infrastructure that is geographically distributed throughout Maryland, Virginia and Washington DC. Due to the locations, the position requires transportation and a flexible work schedule.
  • On-call rotation is shared between team members.
  • Assignments are required 7x24x365. Engineer may be called in even when not officially on-call due to major emergency or expert knowledge in a certain area or certain technology.

Special Knowledge, Skills, & Abilities

  • Requires an advanced understanding of the entire OSI mode.
  • Requires advanced knowledge of BGP and MPLS to architect ISP and SP style solutions for the enterprise, which today includes 3 Tier I commodity internet providers and Internet.
  • Expert knowledge of network engineering in regard to routing, switching, application performance, load balancing and intermediate to expert knowledge in systems management, all server operating systems and application design.
  • Requires a detailed understanding of the currently deployed interfaces and data communications principles as well as advanced network troubleshooting techniques in a large scale and highly complex network environment.
  • Requires a thorough knowledge of layer 2 switching principles.
  • Must be able to configure, verify and troubleshoot VLANs, spanning tree, link aggregation and trunking technologies.
  • Requires a thorough knowledge of layer 3 routing technologies, such as EIGRP, OSPF, BGP and HSRP. In addition, a knowledge of MPLS, multicast, VRF’s, and QOS is required.
  • Requires a detailed understanding of the currently deployed routing and switching principles.
  • Requires a high level of understanding of standard cabling requirements.
  • Demonstrated working knowledge of desktops, laptops, hardware and software setup, configuration. In depth knowledge of OSI model and how all components in an end-to-end network fit into the model.
  • Solid understanding of DHCP and DNS as well as a thorough knowledge of private and public IP addressing.
  • Requires project lead on campus and enterprise-wide deployments of networking technologies.
  • Requires a demonstrated understanding of service excellence techniques and skills and the ability to interpret customer needs in a fast-paced environment.

  • Must demonstrate strong critical thinking and analytical reasoning skills.
  • Ability to work on multiple priorities effectively.
  • Ability to prioritize conflicting demands.
  • Demonstrated track record of the ability to execute assigned project tasks within established schedule.
  • Ability to work collaboratively in a team environment.
  • Ability to communicate effectively in the service of users and colleagues in a positive manner.
  • Writes and communicates clearly and concisely.
  • Possesses sound documentation skills.
  • Ability to maintain confidentiality.
  • Demonstrated track record of exemplary customer service skills
  • Expert knowledge of common network monitoring and security utilities
  • Expert experience in implementing and administrating common TCP/IP-based services, including DNS, DHCP, HTTP, FTP, SSH, SMTP, etc.
  • Expert understanding of Classless Internet Domain Routing (CIDR); ability to clearly explain and articulate CIDR, VLSM, etc.
  • 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.
  • Expert knowledge of Metro Ethernet, DWDM, optical, and related technologies
  • Expert knowledge of MPLS.
  • Expert knowledge of QOS.
  • Expert understanding of different IPv4 addresses, inclusive of loopback, unicast, multicast, limited and directed broadcast.
  • Expert knowledge of IPv4 and 32-bit numbers.
  • Expect knowledge of IPv6 and 128-bit numbers.
  • Expert knowledge of mainstream network troubleshooting tools such as MRTG, Cacti, SmokePing, HP Overview, Cisco Works, etc.
  • Expert knowledge of routed and routing protocols; demonstrated ability to troubleshoot complex IPv4 routing issues.
  • Expert knowledge of IP, Enhanced Interior Gateway Routing Protocol (EIGRP), and Serial Line Interface protocol Frame Relay, VLANs, Ethernet, and access control lists (ACLs).
  • May configure and maintain network related systems that run Windows, Linux, or Unix as an operating system.
  • Expert knowledge of Layer2 technologies and ability to clearly explain and articulate Layer2 strengths and weaknesses
  • Expert 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.
  • Expert knowledge of detailed technical features, functions and benefits of a controller-based wireless architecture.
  • Expert knowledge of how CSMA/CD functions operate.
  • 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.
  • Expert knowledge of Multicast.
  • Troubleshooting highly 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
  • Follows standard practices and procedures in analyzing situations involving readily identifiable problems.
  • Demonstrated ability to install, configure, operate, and troubleshoot complex to highly complex scale- route and switched networks, including implementation and verification of connections to remote sites in a WAN.
  • Expert knowledge of how to implement and manage wireless controllers in an enterprise setting.
  • Working knowledge of user and certificate-based authentication systems.
  • Expert knowledge of redundant technologies, such as HSRP, spanning tree, Vs, etc.
  • Expert knowledge and demonstrated ability in understanding, implementing and supporting various load balancing technologies, such as CSM (Content Switching Modules), ACE (Application Control Engine), Advanced AP load balancing strategies, etc.
  • Expert knowledge of wireless networking and a solid understanding of wireless LAN technologies.
  • Expert understanding and demonstrated track record of implementing and managing complex networking technologies within a production data center setting that serves thousands of users.

Physical Requirements 

  • The ability to lift 50Lbs. to support equipment installs.

Work location

  • Hybrid, Mt. Washington.

Minimum Qualifications
  • Bachelor's Degree.
  • Six years of related experience.
  • Additional education may substitute for required experience and additional related experience may substitute for required education, to the extent permitted by the JHU equivalency formula.

Preferred Qualifications
  • A concentration on enterprise routing, switching and optical networking.

Classified Title: Network Engineer III
Role/Level/Range: ATP/04/PF  
Starting Salary Range: $83,100-$114,230 Annually (Commensurate with experience) 
Employee group: Full Time 
Schedule: Mon-Fri, 8:30am-5pm 
Exempt Status: Exempt 
Location: ​​​​​​​Hybrid/Mount Washington Campus 
Department name: ​​​​​​​IT@JH Networking, Telecom and Data Ctr  
Personnel area: University Administration 


Please refer to the job description above to see which forms of equivalency are permitted for this position. If permitted, equivalencies will follow these guidelines:

*JHU Equivalency Formula: 30 undergraduate degree credits (semester hours) or 18 graduate degree credits may substitute for one year of experience. Additional related experience may substitute for required education on the same basis. For jobs where equivalency is permitted, up to two years of non-related college course work may be applied towards the total minimum education/experience required for the respective job.

**Applicants who do not meet the posted requirements but are completing their final academic semester/quarter will be considered eligible for employment and may be asked to provide additional information confirming their academic completion date.

The successful candidate(s) for this position will be subject to a pre-employment background check. Johns Hopkins is committed to hiring individuals with a justice-involved background, consistent with applicable policies and current practice. A prior criminal history does not automatically preclude candidates from employment at Johns Hopkins University. In accordance with applicable law, the university will review, on an individual basis, the date of a candidate’s conviction, the nature of the conviction and how the conviction relates to an essential job-related qualification or function.


The Johns Hopkins University values diversity, equity and inclusion and advances these through our key strategic framework, the JHU Roadmap on Diversity and Inclusion.


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All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.


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