NewCribl Engineer Expert EMCCribl Engineer ExpertReston, VA$160,000–$180,000 / yearFull timeMust possess the following DoD 8570.01-M certifications or be willing to obtain within 30 days of hire: · Information Assurance Technician (IAT) Level II certification (currently Security+ CE, CCNA-Security, GSEC, SSCP, CySA+, GICSP, or CND). You will shape pipeline strategy, design complex routing and transformation logic, drive platform reliability, mentor senior engineers, and serve as the top technical escalation point for Cribl-related challenges.
NewForescout Cyber Security Engineer EMCForescout Cyber Security EngineerReston, VA$160,000–$180,000 / yearFull timeManage infrastructure and cybersecurity controls, including enhanced detection and vulnerability capabilities and improved event correlation in large enterprises. · Associate’s degree with 5+ years of experience, Bachelor’s degree with 3+ years, or Master’s degree with 1+ year of experience supporting IT projects.
Sr. Systems Engineer - Microsoft 365 Trigyn Technologies IncSr. Systems Engineer - Microsoft 365Baltimore, MDTemporaryContractorFull timeExperience managing directory sync into Azure AD and deep knowledge of Azure AD Sync for Federation, authentication, SSO, and directory sync with Azure AD. Systems engineer – Microsoft 365 to develop solutions for e-mail and collaboration tools as well as handle day-to-day operations within the division.
NewVirtualization Engineer System OneVirtualization EngineerSpringfield, VA$175,000 / yearConfigure and troubleshoot NetApp Storage – ONTAP, perform firmware and OS upgrades, and utilize storage management tools like OnCommand Unified Manager and Performance Manager. Design, implement, and support VMware vSphere, vCenters, and Microsoft Active Directory Forests with JIT administration to support multiple PKI systems.
Integration Engineer LeidosIntegration EngineerLorton, VA$73,450–$132,775Supporting the HEITS management team, the selected individual will be responsible for providing services for the design of new sites, IT renovations, cabling, server room space, desktop PC deployments, printers, faxes, phone(s); copiers; data storage, shared drives, and general-purpose applications on HSDN and C-LAN. The Department of Homeland Security (DHS) has a continuing requirement for Homeland Enterprise IT Secure Services and Support (HEITS) for the continued operations and maintenance and evolution of the Homeland Secure Data Network (HSDN) and the Classified Local Area Network (C-LAN).
NewInformation Systems Security Engineer System OneInformation Systems Security EngineerClarksburg, MD$180,000 / yearYou’ll be hands-on with the Risk Management Framework (RMF), Assessment & Authorization (A&A), ATO sustainment, control validation, continuous monitoring, and vulnerability/stig compliance efforts—partnering closely with security and technical teams. In this role, you’ll help build, secure, and maintain systems by applying cybersecurity engineering best practices across design, implementation, authorization, and ongoing compliance.
Senior Network Integration Engineer JobotSenior Network Integration EngineerTysons, VA$105,000–$167,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. This role focuses on integrating fiber and IP-based circuits while leading the transition from legacy copper and TDM transport systems to modern IP-enabled architectures across geographically distributed environments.
Microsegmentation Engineer System OneMicrosegmentation EngineerVienna, VARemoteThis role will focus on designing, implementing, and supporting microsegmentation controls using Illumio to reduce lateral movement risk and enforce least-privilege access across enterprise workloads. The engineer will analyze application traffic flows, create and enforce microsegmentation policies, reduce lateral movement risk, troubleshoot connectivity issues, and work closely with infrastructure, application, cybersecurity, and architecture teams.
Data Storage Engineer LeidosData Storage EngineerPoolesville, MD$107,900–$195,050If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. Extensive experience administering enterprise-level data storage systems (Dell Storage Center, Dell Compellent, and Data Domain preferred) with a demonstrated understanding of the following services and technologies.
NewPrincipal Cybersecurity Engineer- Architecture OneMain FinancialPrincipal Cybersecurity Engineer- ArchitectureBaltimore, MD$130,000–$156,000 / yearAlong with security platform mastery in more than one platform area (IDS/IPS, firewall/WAF, access and identity, malware defense, threat modeling, exposure management, among others), the Principal Cybersecurity Engineer is formally trained in enterprise IT design and architecture practices. The Principal Cybersecurity Engineer has a demonstrated mastery in multiple security and non-security technology platforms, with the ability to both lead and advise on the overall designs and strategies of both security and non-security technologies.
NewFirewall Engineer- Active Secret Clearance Required VETS, IncFirewall Engineer- Active Secret Clearance RequiredSpringfield, VAHowever, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. Will engage in attacks against the infrastructure, develop security tools, analyze access patterns and hacking behavior, audit source code for vulnerabilities, work with the team to improve best practices and deploy attack detection and prevention tools.
Senior Databricks Migration Engineer PlanIT GroupSenior Databricks Migration EngineerReston, VALead the technical migration from legacy SQL Server stored procedures and ADF pipelines to Databricks Lakehouse (Delta Lake), ensuring best practice Lakehouse design. They are responsible for designing and creating systems that collect, manage, and convert raw data into usable information for data scientists and business analysts to interpret and enables the agency to make smarter decisions and optimize operations.
Senior Network Engineer LeidosSenior Network EngineerAccokeek, MD$107,900–$195,050The Senior Systems Engineer will provide technical leadership and support in the areas of IT planning, solution specification/design, implementation and target architecture development for the AFNCR Consolidated Communication Center (CCC). If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
Systems Engineer - Corporate Pratum CompaniesSystems Engineer - CorporateGaithersburg, MD$90,000–$105,000 / yearFull timeThe Systems Engineer works closely with the Senior Vice President of Support Services, internal IT staff, business leaders, and third-party vendors to support infrastructure, cybersecurity, networking, and cloud initiatives. This role is exempt and has an anticipated annualized base salary range of $90k-$105k for a new employee depending on a number of relevant factors including individuals’ experience, qualifications, knowledge, skills, abilities, client/property or company budgetary limitations/guidelines, and other job-related company and market considerations.
Network Engineer – Cisco & Zero Trust Architecture IMRI Technology & Engineering SolutionsNetwork Engineer – Cisco & Zero Trust ArchitectureAshburn, VirginiaGuided by our core values of innovation, excellence, and a solution-driven mindset, we have served a diverse portfolio of customers that includes federal agencies, state and local governments, and Fortune 1000 companies. Join our award-winning team at Information Management Resources, Inc. (IMRI), a small business leader in the technology industry known for our commitment to innovation, excellence, and authenticity.
Senior Network Engineer – Cisco & Zero Trust Architecture IMRI Technology & Engineering SolutionsSenior Network Engineer – Cisco & Zero Trust ArchitectureAshburn, VirginiaGuided by our core values of innovation, excellence, and a solution-driven mindset, we have served a diverse portfolio of customers that includes federal agencies, state and local governments, and Fortune 1000 companies. This role is responsible for leading the design, implementation, and sustainment of secure, enterprise network architectures built on Cisco technologies and aligned with Zero Trust principles.
Cisco ISE Engineer Leidos Holdings IncCisco ISE EngineerMD$87,100–$157,450 / yearMicro-Segmentation for ZTA: Engineer and maintain Cisco TrustSec, Security Group Tags (SGTs), and Security Group Access Control Lists (SGACLs) to contain lateral movement and enforce granular network segmentation. Zero Trust Architecture (ZTA) Execution: Architect and deploy Zero Trust Network Access (ZTNA) principles using Cisco ISE to strictly enforce least-privilege access across the enterprise network.
Senior Cisco Voice Engineer VTGSenior Cisco Voice EngineerDulles, VirginiaFull timeSupport secure communications devices and infrastructure, including VoIP phones, STEs, Viper phones, encryption devices, POTs/ISDN/leased lines, conference bridges, and call management servers. This role focuses on designing, deploying, securing, and sustaining enterprise level Cisco Unified Communications solutions across a complex, highly secure environment.
Cisco ISE / NAC Engineer Mitchell MartinCisco ISE / NAC EngineerMerrifield, VA$70–$75 / hourBy applying for this job, you agree to receive AI-generated calls, text messages, and/or emails from Mitchell Martin Inc and its affiliates and contracted partners at various frequency through traditional and automated methods. You will be responsible for implementing, supporting, and troubleshooting network access solutions in a dynamic enterprise environment.
Network Engineer - Network Access Control and CISCO Emergent TechnologiesNetwork Engineer - Network Access Control and CISCOReston, VirginiaEmergent Technologies Inc., a veteran-owned provider of cutting-edge IT and engineering solutions, is seeking a highly experienced Network Engineer (SME Level) with deep expertise in Network Access Control (NAC) and CISCO network appliances . If you're a senior-level network engineer with deep NAC expertise looking to lead critical infrastructure security efforts, apply now to join Emergent Technologies Inc. in Herndon, VA.
Cisco ISE Network Engineer CDW CorpCisco ISE Network EngineerMcLean, VA$140,000–$155,000 / yearDetermines specifications for and manages the cost analysis, purchase, testing, installation, support, and quality assurance review of network communications, including LAN/MAN/WAN systems and platforms. Duties may include providing specifications and detailed schematics for network architecture; providing information for hardware and software selection; and tools for the most efficient solution to meet business needs, including present and future capacity requirements.
Network Security Engineer (Cisco, Palo Alto) EliosNetwork Security Engineer (Cisco, Palo Alto)Washington DCThe Network Engineer will be responsible for troubleshooting and managing Cisco routing and switching (R/S) environments, handling Layer 2 networking with some routing, and working extensively with Palo Alto firewalls. This role requires hands-on experience with Panorama-managed firewalls, familiarity with legacy network migrations, and policy optimization on Palo Alto systems.
Cisco Certified Internetwork Engineer Justus CorporationCisco Certified Internetwork EngineerDumfries, VAWorking with Stakeholders to clearly define the business requirements as it pertains to Enterprise network products and services to include the following: Network Design and Implementation: Experience supporting WAN capacity & performance management, including baseline data gathering, data analysis, threshold determination and overall service validation.
Cisco Collaboration Design Engineer -Junior (Government) AT&T IncCisco Collaboration Design Engineer -Junior (Government)Springfield, VA$90,000–$130,000 / yearHas knowledge of security requirements for specialized information transfer applications and is skilled in preparing technical documentation and providing other services required by the order. Knowledge of Cisco's Unified Communications Product line such as Unified Communications Manager, Unity Connection and collaboration applications, features, and services (e.g.
Network Engineer, Lead Cisco ISE / Firepower American Systems CorpNetwork Engineer, Lead Cisco ISE / FirepowerArlington, VAWe're looking for someone with strong hands-on experience in Cisco ISE, Cisco Firepower, and enterprise network security to make a direct impact on a critical national security mission. AMERICAN SYSTEMS, a 100% employee-owned company, is seeking a Lead Network Engineer to support secure network operations in a highly classified environment in Arlington, VA.
Network Engineer, Lead - Cisco ISE / Firepower AMERICAN SYSTEMSNetwork Engineer, Lead - Cisco ISE / FirepowerArlington, VirginiaFull timeOverview: AMERICAN SYSTEMS, a 100% employee-owned company, is seeking a Lead Network Engineer to support secure network operations in a highly classified environment in Arlington, VA . AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance.
Cisco Unified Communications (CUCM) Engineer All Native GroupCisco Unified Communications (CUCM) EngineerWashington, Washington, DCFull timeAll Native Group is seeking a highly qualified Senior level Cisco Unified Communications (CUCM) Engineer to design, implement and provide maintenance and support of enterprise-level voice solutions including Call Manager, Unity Connection, Emergency Responder and VoIP endpoints. As a tribally owned organization, All Native Group operates multiple subsidiary businesses, providing clients with the advantages of working with a small business while leveraging the resources and expertise of a larger, established company.
Network Engineer 3 (On-Call/Travel Required) - Cisco/Arista/SSP/STE/STN/LatteArt Captivation SoftwareNetwork Engineer 3 (On-Call/Travel Required) - Cisco/Arista/SSP/STE/STN/LatteArtAnnapolis JunctionCaptivation Software is looking for a senior network engineer to assist with daily responsibilities on the program and will be expected to travel as needed as well as be on-call for operational systems. Security Clearance: Must currently hold a Top Secret/SCI U.S. Government security clearance with a favorable Polygraph, therefore all candidates must be a U.S. citizen.
Network Engineer and Cisco Specialist, Senior Booz Allen Hamilton IncNetwork Engineer and Cisco Specialist, SeniorWashington, DC$77,600–$176,000 / yearThe work may include network architecture design, performance management, network planning, IP engineering, layer 2 switching, GRE tunnels, IBGP, and secure network implementation. Onsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.
Cisco Network Security Engineer/ Senior Consultant Deloitte Touche Tohmatsu LtdCisco Network Security Engineer/ Senior ConsultantBaltimore, MD$105,400–$207,800 / year3+ years of experience with Cisco Identity Services Engine (ISE) 802.1X Network Access Control (NAC), guest lifecycle management, profiling policies, TrustSec segmentation, and Cisco Firepower capabilities including intrusion prevention system (IPS), malware protection, Uniform Resource Locator (URL) filtering, Domain Name System (DNS)-based security, Secure Sockets Layer/Transport Layer Security (SSL/TLS) decryption, and cloud firewall deployments in Amazon Web Services (AWS), Microsoft Azure, or Google Cloud Platform (GCP). 5+ years of experience designing, deploying, and managing Cisco Firepower Threat Defense (FTD) and Firepower Management Center (FMC) in enterprise environments, including physical appliances, virtual instances, and cloud-delivered Firewall Management Center (cdFMC).
Senior Cisco Voice Engineer VTG.Senior Cisco Voice EngineerVASupport secure communications devices and infrastructure, including VoIP phones, STEs, Viper phones, encryption devices, POTs/ISDN/leased lines, conference bridges, and call management servers. This role focuses on designing, deploying, securing, and sustaining enterprise level Cisco Unified Communications solutions across a complex, highly secure environment.
Cisco ISE Engineer LeidosCisco ISE EngineerMarylandMicro-Segmentation for ZTA: Engineer and maintain Cisco TrustSec, Security Group Tags (SGTs), and Security Group Access Control Lists (SGACLs) to contain lateral movement and enforce granular network segmentation. Zero Trust Architecture (ZTA) Execution: Architect and deploy Zero Trust Network Access (ZTNA) principles using Cisco ISE to strictly enforce least-privilege access across the enterprise network.
Cisco Voice Engineers (Expert) BAE Systems PlcCisco Voice Engineers (Expert)Herndon, VAfor description visit the url https://jobs.baesystems.com/global/en/job/BAE1US126124BREXTERNAL/Cisco-Voice-Engineers-(Expert ).
Network Engineer - Network Access Control and CISCO Emergent Technologies IncNetwork Engineer - Network Access Control and CISCOReston, VAEmergent Technologies Inc., a veteran-owned provider of cutting-edge IT and engineering solutions, is seeking a highly experienced Network Engineer (SME Level) with deep expertise in Network Access Control (NAC) and CISCO network appliances. If you're a senior-level network engineer with deep NAC expertise looking to lead critical infrastructure security efforts, apply now to join Emergent Technologies Inc. in Herndon, VA.
CISCO Call Manager Administrator Omniscius ConsultingCISCO Call Manager AdministratorChantilly, VAFull timeWe are seeking an experienced Cisco Call Manager Administrator to support the administration, configuration, maintenance, and optimization of our Cisco Unified Communications Manager (CUCM) environment supporting Department of Defense operations. The successful candidate will be responsible for ensuring the reliability, security, and performance of enterprise voice and unified communications services while maintaining compliance with DoD cybersecurity and operational requirements.
Cisco Unified Communications SME (Contingent Upon Award) All Native GroupCisco Unified Communications SME (Contingent Upon Award)Washington, DC$120,000–$170,000 / yearFull timeSummary: Seeking a highly qualified Senior level Cisco Unified Communications Manager (CUCM) engineer to design, implement and provide maintenance and support of enterprise-level voice solutions including Call Manager, Unity Connection, Emergency Responder and VoIP endpoints. Provides research, investigation and problem resolution of voice incidents and outages and status updates utilizing appropriate Incident Handling, Management and Ticketing system.
NewCisco Voice and Video Administrator, Staff (Top Secret Clearance w/SCI eligibility) American Systems CorpCisco Voice and Video Administrator, Staff (Top Secret Clearance w/SCI eligibility)Washington, DCThe ideal candidate brings hands-on experience with Cisco collaboration technologies, works well in a fast-paced operational setting, and can support mission-critical communications services in an a secure DoD environment. AMERICAN SYSTEMS, a 100% employee-owned company, is seeking a Cisco Voice and Video Administrator, Staff, to support secure enterprise voice and video communications in a high-visibility Department of Defense environment.
Network Engineer Edgewater Federal Solutions, Inc.Network EngineerWashington, Washington, DC$120,000–$128,000 / yearFull timeEdgewater Federal Solutions is ISO 9001, 20000-1, 270001 certified, appraised at CMMI Level 3 Maturity for Development and Services, and has been named in the Top Workplaces in the Greater Washington Area Companies since 2018. . The Network Engineer works to maintain network reliability, resolve issues promptly, and collaborate with other IT teams to ensure that networking systems support the organization's operational needs.
Senior Network Engineer BlueAllySenior Network EngineerDCThe Senior Network Engineer should have extensive experience in the design, implementation, and support of complex data and voice networks, provisioning and troubleshooting wide area services, diagnosing and resolving equipment configuration and network problems, monitoring network faults and performance, and supporting cabling infrastructures to support voice and data. Senior network engineering support to include advanced data design, upgrades, troubleshooting, and Level 3 operational support for the campus and wide area networks.
WiFi-Network Engineer SENIOR All Native GroupWiFi-Network Engineer SENIORWashington, DC$140,000–$160,000 / yearFull timeAnalyze network topologies and traffic and capacity requirements • Assist/lead the creation of technical manuals, operating procedures and other support documentation • Provide Tier 3 technical support and troubleshooting for client/user support • Perform server and virtual network administration duties to maintain operations • Assist with site surveys, collecting requirements, and planning wireless deployments • Participate in occasional travel as required for installations and support. • Hands-on experience with troubleshooting and site-survey tools including Ekahau Site Survey • Ability to balance multiple priorities in a fast-paced, highly collaborative, frequently changing, and sometimes ambiguous environment • Excellent analytical, communication, and documentation skills with demonstrated ability to collaborate and influence across multiple teams Supervisory Responsibility None required for this position.
Sr. Network Engineer Red RiverSr. Network EngineerChantilly, VirginiaHands-on experience with at least one SDN platform spanning WAN, campus LAN, or branch domains is required; deeper, hands-on deployment experience in the following areas is preferred: Experience with centralized/cloud network management and intent-based automation/cloud-managed platforms (e.g., Cisco Catalyst Center/DNA Center/Meraki, Juniper Mist/Marvis, Aruba Central) for unified LAN/WAN/wireless visibility and control preferred. Network Engineer operates in a professional services capacity delivering complex multi-site and multi-domain network solutions to enterprise customers across a variety of vendor platforms, with Cisco as the primary technology track.
Network Engineer I (HPC) VibrintNetwork Engineer I (HPC)Annapolis Junction, MDFull timeCisco IOS, CatOS, NxOS, filter and access control, Ciscoworks, TACACS+, ASA, FWSM, HP Openview, Cisco routers, Cisco Switches, F5/Cisco load balancers, Infiniband, Juniper, FiberChannel (FC) SAN, and VPN (IPSEC). Must have datacenter network design and architecture experience to include installation and configuration of Cisco routers, switches, firewalls, and IPSEC virtual private networks.
Network Engineer II (HPC) VibrintNetwork Engineer II (HPC)Annapolis Junction, MDFull timeCisco IOS, CatOS, NxOS, filter and access control, Ciscoworks, TACACS+, ASA, FWSM, HP Openview, Cisco routers, Cisco Switches, F5/Cisco load balancers, Infiniband, Juniper, FiberChannel (FC) SAN, and VPN (IPSEC). Must have datacenter network design and architecture experience to include installation and configuration of Cisco routers, switches, firewalls, and IPSEC virtual private networks.
Network Engineer III (HPC) VibrintNetwork Engineer III (HPC)Annapolis Junction, MDFull timeCisco IOS, CatOS, NxOS, filter and access control, Ciscoworks, TACACS+, ASA, FWSM, HP Openview, Cisco routers, Cisco Switches, F5/Cisco load balancers, Infiniband, Juniper, FiberChannel (FC) SAN, and VPN (IPSEC). Must have datacenter network design and architecture experience to include installation and configuration of Cisco routers, switches, firewalls, and IPSEC virtual private networks.
Cloud Network Engineer System OneCloud Network EngineerGreenbelt, MDRemote$130,000–$140,000 / hourThis position will be responsible for managing the configuration, installation, and ongoing support of the Network Infrastructure, which includes Palo Alto firewalls, Cisco VPN Concentrators, Cisco CSR devices, as well as Networking in cloud platforms such as Azure and OCI. Work with the existing network administrators and engineers to manage, deploy, and troubleshoot firewalls, routers, VPN concentrators, and Network Access Control in cloud platforms.
Network Engineer - Active Security Clearance CadreNetwork Engineer - Active Security ClearanceReston, VAFull timeStrong analytical and problem-solving skills; demonstrated ability to analyze complex situations, determine course of action and act promptly and effectively when problems arise. This individual will work within a small, mission focused team of network and systems engineers to implement technical solutions addressing challenging collaboration and data protection problems.
Senior Network & Telecom Engineer IBSS CorporationSenior Network & Telecom EngineerSilver Spring, MD$100,000–$140,000 / yearThe ASOS directly supports: (1) Air Traffic Controllers relying on surface observations to provide airport weather parameters to safely support National Aerospace System (NAS) operations; (2) surface weather observations at airports required for dispatch of commercial aircraft; (3) surface observations required for Instrument Flight Rules (IFR) operations; (4) surface observation data required by the Office of Operational Systems and used by the NWS to produce weather forecast models and products; (5) dial-in services to the aviation community and general public for automated voice weather reports; and (6) Ground-to-Air (GTA) radio broadcasts of automated voice weather reports. A senior engineer in this role needs a combination of expert-level networking and specialized cloud credentials: Cloud Specialization: AWS Certified Advanced Networking – Specialty is essential for designing secure, scalable AWS network architectures like Transit Gateways and Direct Connect.
Lead Network & Cloud Engineer/SME IQUASAR LLCLead Network & Cloud Engineer/SMEWashington, DCRemoteRequired Technical Skills and Knowledge: Expert-level, hands-on expertise in managing the full Cisco Meraki suite (MX Security Appliances, MS Switches, MR Access Points). Demonstrated mastery of Microsoft Azure networking, including VNets, subnets, peering, NSGs, Azure Firewall, VPN Gateway configuration, and ExpressRoute/Direct Connect.
Network Engineer II Leidos Holdings IncNetwork Engineer IIGreenbelt, MD$59,150–$106,925 / yearWork directly or indirectly with NASA customers, Technicians, Network Engineers and/or Network Architects to execute network design changes or modifications of the NASA network infrastructure, as well as identify, analyze, and resolve issues for customer impacting events that may be escalated to Engineering. Leidos is seeking a highly skilled and experienced Network Engineer II to support the Advanced Enterprise Global Information Technology Solutions (AEGIS) program and join a large Engineering team entrusted with evolving and sustaining the NASA OCIO Enterprise Corporate network.
Network Engineer Science Applications International CorpNetwork EngineerSpringfield, VAPerforms these functions across using COTS and GOTS tools to test/validate physical media, Operating Systems, TCP protocol stacks, routing protocols, routed protocols and network hardware components primarily on Cisco devices. Uses monitoring, performance analysis systems, network management software, and hardware management software to troubleshoot and isolate problems, gauge WAN and LAN performance and activity.