Network Performance & Reliability Engineer II

Our customer, the Defense Information Systems Agency (DISA), provides, operates, and assures command and control of the Defense Information System Network (DISN) services to its customers, the department of Defense (DoD) and national security organizations. This position directly supports the DISA-provided capabilities and services. The Leidos Digital Modernization Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for a Network Performance & Reliability Engineer II at MacDill AFB, FL.  The Network Engineer will perform  sustainment, performance, maintenance, Problem and Change management services to help ensure secure, reliable, and uninterrupted availability of the Department of Defense networks. This position requires U.S. citizenship and an active Secret clearance to start. Responsible for assisting with the following duties: • Maintain, deploy, and troubleshoot databases and data ingestion scripts. • Assist data engineers with quality control of data, data collection processes, and testing/implementing data collection and process improvements • Aid senior team members in supporting GSMO Program driven Innovations development, integration, and continuous improvement by leveraging, maintaining, and in the creation/maintenance of various tools. • Perform engineering tasks related to the design, performance management/analysis, implementation, and integration of network changes and sustainment of customer systems in an Wide Area Network environment. • Conduct planning and performance of analytical research, design development, and other tasks to align with customer specifications. • Control network systems & tools to ensure 99% or better system uptime and connectivity. • Provide ad-hoc engineering support, statistics/data gathering, modeling, creating/updating flowcharts and providing forecasts based on trending analysis  based on Engineering documents and experience. • Ensure efficient delivery of contract capabilities using industry standards and repeatable processes. • Mitigate risks, control costs and schedule variance, and effectively manage large scale, integrated projects. • Perform a variety of analytical tasks which include hardware and software design and implementation. Basic Qualifications: • Experience with coding in languages including but not limited to Expect, Python, SQL, and/or Perl • Currently possess DoD 8750 certification at IAT level II, Security+ CE or equivalent to meet requirement. • Experience with Kibana, Service Now,  SQL, Web development, Python, UI UX, or Databases. • Experience working with large sets of data from either service provider or enterprise networks. • Experience monitoring, troubleshooting, and/or configuring IP or Transport Network technologies. • Experience with ports and protocols. • Experience analyzing network KPIs, VLAN, routing, IP addressing and sub-netting and/or Exposure to troubleshooting, assessment, root cause analysis, and restoration of Optical networks • Experience with IP or Transport Technology. • Currently possess an active DoD Secret security clearance. Preferred Qualifications: • Familiarization of DOD regulations and directives. • Python, Pearl or other language scripting capable of pull information from Cisco/Juniper routers and other network devices. • Proficient in the tools Service Now and/or Kibana is a plus • Physical cable plant and wiring experience. • Certifications with major vendors such as Cisco, Elastic, or ITIL4  are a strong plus. • Excellent project, technical, interpersonal, presentation, Performance analytics,  and problem management skills. • Extensive network integration experience for a variety of network protocol standards. • Ability to communicate orally, and in writing, detailed technical information on troubleshooting and implementation efforts. • Experience with Cisco IOS XR, JUNOS, and Cisco IOS codes. • IPSEC configuration & troubleshooting experience. • MPLS configuration & troubleshooting experience. •CIENA 6500 configuration & troubleshooting experience. •CISCO 4200 configuration & troubleshooting experience. •CISCO NCS2K configuration & troubleshooting experience. . • Proficient in Ciena,  Cisco, and/or Juniper configuration, troubleshooting, and design. Required Education and Experience: Requires BS degree and 2-4 years of prior relevant experience or Masters with less than 2 years of prior relevant experience.  Specific experience, education and training may be considered in lieu of degree. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: February 13, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $59,150.00 - $106,925.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.