Qualifications: Bachelor's degree with 8+ years related experience or Master's degree with 6+ years. Additional experience maybe considered in lieu of a degree. An active TS / SCI with Poly security clearance. At least 5 years' experience in systems administration, including configuring and maintaining servers, operating systems, and networks. In-depth expertise in acquiring, configuring, and … maintaining computer servers, operating systems, and network file systems. Strong knowledge of networking principles, including TCP/IP, DNS, DHCP, and network troubleshooting. Experience upgrading, installing, and configuring application software and computer hardware in complex environments. Proficiency in troubleshooting and providing technical support for hardware, software, and network issues. Familiarity with creating and managing More ❯
ManTech seeks a motivated, career and customer-oriented Midlevel Systems Engineer / Architect to join our team in DC, Maryland, and Virginia (DMV) area. As Computer Systems Engineer / Architect, you will be responsible for the design, development, and deployment of the network enterprise architecture. The individual designs and implements computer and information networks, such as … and capture customer requirements, presenting customer requirements in technical exchanges with other government agencies Research and implement enterprise-wide network solutions, capabilities, and enhancements to support customer business / mission goals and objectives, while complying with the network architecture and design standards Produce SELC project artifacts such as requirements, design documents, diagrams, and other required documentation Troubleshoot network … in tickets and knowledge repositories Assist with development and execution of test plans and supporting documentation for network configuration upgrades, additions, or revisions Evaluate and report on new / emerging network / communication technologies to enhance capacity, performance, and reliability; Evaluate and recommend changes and / or technology upgrades to address performance, standardization, and More ❯
Social network you want to login / join with: Infrastructure Consultant - Windows / Linux, Network & Security, London col-narrow-left Client: Capula Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: 7988de210d4d Job Views: 4 Posted: 02.06.2025 Expiry Date: 17.07.2025 col-wide Job Description: Job Title: Infrastructure Consultant … Windows / Linux, Network & Security Location: London Contract Term: 6 months (with potential extension) Role Summary We are seeking a hands-on Infrastructure Consultant with strong expertise in server (Windows / Linux), network, and security domains. This role is primarily focused on supporting day-to-day user requests, managing escalated (2nd / 3rd tier … infrastructure projects. Key Responsibilities Provide advanced technical support and resolution for server, networking, and security-related incidents and service requests. Manage and troubleshoot issues across Windows Server (2016 / 2019 / 2022) and Linux environments (primarily Red Hat / CentOS). Respond to and resolve 2nd / 3rd tier user escalations across More ❯
PENETRATION TESTER: Senior and Expert Levels Location: Chantilly, VA US Security Clearance Requirement: TS / SCI with Full Scope Polygraph Clearance Status: Must be Current JOB DESCRIPTION: Inferno Systems is currently looking for Penetration Tester positions with a minimum of 7+ years experience conducting technical security and / or vulnerability assessments. Please note the security clearance … requirement above: candidates MUST have a current / active TS / SCI with Full Scope Poly to be considered. JOB SUMMARY: We are looking for Penetration Testers whose work will directly impact U.S. policymakers, military officials and law enforcement agencies. You should be able to use sophisticated techniques to identify vulnerabilities, exploit them, and gain and … use a wide variety of skills to be able to demonstrate exploiting vulnerabilities and ensuring mitigation steps close the holes you find. REQUIRED SKILLS: • Solid understanding of networking, TCP/IP, virtualization and cloud / data center architecture. • Understanding in cloud computing platform technologies such as AWS, Microsoft Azure, Google, cloud computing More ❯
weeks ago Be among the first 25 applicants Job Title: Infrastructure Consultant - Windows / Linux, Network & Security Location: London Contract Term: 6 months (with potential extension) Role Summary We are seeking a hands-on Infrastructure Consultant with strong expertise in server (Windows / Linux), network, and security domains. This role is primarily focused on supporting day … to-day user requests, managing escalated (2nd / 3rd tier) technical issues, and contributing to ongoing infrastructure projects. Please note that this role requires being in the office five days per week. Key Responsibilities Provide advanced technical support and resolution for server, networking, and security-related incidents and service requests Manage and troubleshoot issues across Windows Server … / 2019 / 2022) and Linux environments (primarily Red Hat / CentOS) Respond to and resolve 2nd / 3rd tier user escalations across desktop, server, and network domains Support and maintain network infrastructure including firewalls, switches, VPNs, and wireless systems (primarily Cisco-based) Conduct regular patching, hardening, and performance tuning of infrastructure More ❯
Piper Companies is looking for a Network / System Administrator to join a government contractor in San Diego, CA. This role requires the candidate to report Onsite and have an active Secret Clearance Essential Duties of the Network / System Administrator: Install and configure LAN, WAN and internet systems Ensure network availability to all system … users Monitor / test website performance Assist in network analysis, monitoring, coordination and planning Qualifications of the Network / System Administrator: Bachelors degree in Computer Science or related field At least 4 years relevant technical experience CCNA required NOC experience preferred Active Secret clearance required Compensation for the Network / System Administrator … based on experience) Comprehensive benefit package; Cigna Medical, Cigna Dental, Vision, 401k w / ADP, PTO, paid holidays, sick Leave as required by law This job opens for applications on 12 / 13 / 24. Applications for this job will be accepted for at least 30 days from the posting date linux, network, sys More ❯
risk to mission, and address cyber security issues in computer networks and systems. The position location is our Chantilly, VA office. Travel to the Pentagon, Columbus OH, and / or other Customer locations may be necessary based on program or customer needs. A Network Security Analyst at Battelle is knowledgeable on commodity network systems, infrastructure, layered defense, and … an attack, and have knowledge of encryption. This job is right if you have a passion for continuous learning and solid understanding of networks in the form of TCP/IP, packet structure, protocol characteristics, troubleshooting anomalous network behavior, and designing solutions with a team of experts operating in a variety … analytic tools. Assist with on-site surveys, mission planning, and deployment process. Maneuver within network infrastructure to isolate, characterize and categorize network anomalies to help determine root source / root cause. Create reports to document observations, remediation, and recommended actions. Support simulating adversarial techniques in a lab and collect data to help develop detection approaches. Research emerging trends More ❯
solutions, including firewall configurations, VPN setup, and security protocols Implement and manage network access control (NAC) systems to ensure secure network access for all users and wireless / wired devices Configure, optimize, and troubleshoot Wi-Fi networks, including access points, cloud-based controllers, and client devices Perform network performance monitoring, analysis, and troubleshooting for wired and wireless … monitoring systems to pre-empt and detect failure as well as provide alerting to the organisation Participate in on-call rota Provide concise and professional documentation Project delivery / management collaborating with internal and external vendors Implement and / or coordinate changes following approved change control policies. Travel might be required. Skills, Knowledge and Expertise … Required Skills & Qualifications: Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent experience) 4+ years of experience in network support / engineering roles Strong understanding of networking fundamentals (OSI Model, TCP/IP, Switching & Routing) Working in multi-vendor environment, incl. Arista, Fortinet, Meraki, Zscaler Experience in configuring More ❯
important for success. This position is 100% on site, located in Washington, D.C. and is contingent upon the award of the contract. Candidates must possess an Active TS / SCI security clearance. Responsibilities: Provide Tier I & II support, handling calls and resolving incidents / service requests using ITIL-based incident management and request fulfillment processes. Act … need-to-know before granting access to classified networks. Monitor system vulnerabilities, patch compliance, and security advisories, ensuring mitigation and remediation strategies are in place. Serve as SCIF / Collateral Security Manager, overseeing scheduling, access control, and security compliance for Sensitive Compartmented Information Facilities (SCIFs). Enforce physical security measures, including alarms, entry / exit … availability and ensuring adherence to security requirements. Maintain Common Access Card (CAC) Trusted Agent responsibilities, ensuring compliance with credentialing procedures. Assist in procurement, fielding, and sustainment of crypto / keying material and devices. Track, control, and maintain inventory requirements for Government Furnished Equipment (GFE). Ensure fully documented procedures for imaging computing devices and provide quarterly reports More ❯
health of Cisco and Juniper routers and switches. Extensive experience in Software Define Networks (SDN). Broad understanding of network infrastructure topologies, security policies, firewalls, and the L2 / L3 switch and router infrastructure. Experience deploying, managing, and troubleshooting network systems, switching, and routing protocol standards such as: TCP/IP … MPLS, OSPF, BGP, SDN, and 802.1x. Experience managing and troubleshooting DNS, DHCP, IPAM, and NTP in a large multi-site environment. Experience with network security, including firewall, IDS / IPS, VPN, and vulnerability remediation. Experience using network management and analysis tools such as SNMP probes, network taps, and traffic analyzer. Experience with Network Management & Performance platforms, such as … NetScout, IBM NetCool, Solarwinds NMS products, NetBrain, Infovista, Clearpass, Aruba, Arista. Experience building configurations using CLI. Experience with network security, including firewall, IDS / IPS, VPN, and vulnerability remediation. Creating and documenting processes and creating work instructions. Excellent hardware troubleshooting experience. Experience creating scripts to automate routine administration tasks. Skills & Abilities: Possess flexibility to operate in a highly More ❯
Do: Perform research, requirements analysis, design, installation, documentation, troubleshooting, and sustainment of local- and wide-area network hardware and services. Maintains a thorough knowledge of existing network and / or security hardware and software in use to provide third-tier technical and administrative support, and provide complex internal analysis and support of the network and / or security infrastructure. Acts as the technical interface with vendors and other external stakeholders and reviews / makes recommendations on network and / or security service / maintenance arrangements. Reviews technical documentation of supported environments to ensure that documentation is accurate and up-to-date. Can install and configure WAN and LAN … indicators are met or exceeded. Works individually and also actively participates on integrated teams to support the customers deployable networks supporting multiple mission partners at multiple locations CONUS / OCONUS Requires minimal guidance and direction from more senior level technicians, specialists, and managers. Provides guidance to lower level technicians and specialists. Understands and applies more advanced concepts and More ❯
Social network you want to login / join with: Citrix Infrastructure Engineer - VP, slough col-narrow-left Client: SMBC Group Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 3 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: Purpose of Job We are seeking a Senior Citrix Infrastructure Engineer … organisation. Through close partnership with the Architecture and Engineering function (A&E) the Senior Engineer realises the conceptual designs then builds and operationally introduces the new technology platform / solution for the organisation. They oversee the handover to operational support colleagues and ensure that documentation is current and accurate. The Senior Engineer will work in a discrete, focussed … team dedicated to a specific technology area but will foster core relationships with other IT teams in both EMEA and North America. Facts / Scale The Senior Engineer is part of an IT Infrastructure team with ~60 members. The Client Computing team in London comprises 9 people at present. Typically leads 3+ Global IT infrastructure related projects /More ❯
the Lone Wolf program is to support, operate, and maintain the Distributed Continuity Integrated Network - Top Secret Enterprise Services (DCIN-TS ES) which is a DoD-provided, TS / SCI, integrated voice, video, and data, global communications network that facilitates collaboration among senior leaders and key staff. The Lone Wolf program boasts a professional workforce comprised of specialists … to provide comprehensive IT support to a broad and diverse customer base. Support all facets of information systems operations, including data control, computer and communications systems, LAN / WAN administration, operating systems programming, and the implementation and enforcement of system security policies and procedures. Evaluate and define hardware requirements to support evolving mission needs. Prepare detailed technical … range of Cisco networking products, including routers, switches, firewalls, wireless controllers, across enterprise and tactical environments. Strong foundational and applied knowledge of core internetworking protocols and technologies, including TCP/IP, VPLS, DMVPN, EIGRP, BGP, OSPF, VRRP, HSRP, and NHRP, with a focus on routing, redundancy, and secure connectivity. Proficient in network security principles More ❯
skills will help you succeed as a Support Engineer at F5: Customer support experience with enterprise-level corporate customers in production environments. Hands-on technical experience with LAN / WAN operations (e.g., DNS, Open SSL, Cryptography, virtualization, etc.), Network Protocols, UNIX or Linux (e.g., Redhat) operating systems, as well as VMware or equivalent hypervisors and network hardware. Solid … grasp of TCP/IP protocols and the OSI model. Understanding packet captures using Wireshark Knowledge of DNS and HTTP protocol in detail. Understating of SSL / TLS handshake Experience of Network Security (e.g., Web Application Security, AAA, VPN, DDoS, Malware, Application Firewalls, etc.). Ability to read, write … to have but if you don't have them, F5 will be happy to help you learn those in time : Experience or ability to grow expertise in Public / Private Cloud technologies (Microsoft, AWS, Google), NGINX, Programming / Scripting (JavaScript, Python, BASH, PERL, Node.JS), Containers (OpenStack, Docker, Velcro), Container Orchestration (Kubernetes) and / or More ❯
Develop and maintain network documentation, diagrams and runbooks Work with external vendors and service providers for circuit deployments Participate in the evaluation and testing of new networking products / technologies • Provide guidance and knowledge transfer to junior team members Education and Experience Requirements: Bachelor's degree in Computer Science, Engineering, IT or related field 5+ years of experience … designing, deploying and operating enterprise networks Deep understanding of TCP/IP, routing protocols, LAN / WAN technologies Extensive hands-on experience with Cisco and Juniper network devices Expertise in network security concepts like firewalls, VPNs, AAA, encryption Proficiency in network automation using Python, Ansible, Bash scripting Experience with network monitoring and … and IPv6 Attention to detail with a focus on secure network deployments Analytical skills to monitor capacity and implement network optimizations Desired Qualifications: Experience deploying and operating DoD / Federal networks Understanding of wireless LAN technologies and mobility architectures Knowledge of SD-WAN, network virtualization and load balancing solutions Possession of security certifications like CCNP Security or JNCIS More ❯
combines hundreds of databases into a single, powerful information system. It is a one-stop source for financial information and analytics for business analysts, portfolio managers, investment bankers / management firms, and other financial professionals who analyze companies, portfolios, markets, and economies. FactSet was formed in 1978 and operates out of 37 locations worldwide. With over $1 Billion … has been publicly traded on the New York Stock Exchange under the symbol FDS. The ideal candidate: We are looking for a candidate with solid experience with WAN / LAN technologies, TCP/IP, routing protocols, and a deep understanding of reference network architectures along with a significant level of 'Hands On … both internal and external. Job Responsibilities: Act as a knowledgeable resource for FactSet's clients, vendors, and internal leaders. Project manage business and network team initiatives. Configure Cisco / Arista Routers / Switches / F5 Load Balancers / Cloud Networking Services to provide solutions that successfully integrate into our clients, vendors, and More ❯
ManTech seeks a motivated, career and customer-oriented Senior Systems Engineer / Architect to join our team in DC, Maryland, and Virginia (DMV) area. As Computer Systems Engineer / Architect, you will be responsible for the design, development, and deployment of the network enterprise architecture. The individual designs and implements computer and information networks, such as … and capture customer requirements, presenting customer requirements in technical exchanges with other government agencies Research and implement enterprise-wide network solutions, capabilities, and enhancements to support customer business / mission goals and objectives, while complying with the network architecture and design standards Produce SELC project artifacts such as requirements, design documents, diagrams, and other required documentation Troubleshoot network … in tickets and knowledge repositories Assist with development and execution of test plans and supporting documentation for network configuration upgrades, additions, or revisions Evaluate and report on new / emerging network / communication technologies to enhance capacity, performance, and reliability; Evaluate and recommend changes and / or technology upgrades to address performance, standardization, and More ❯
support of government customer; perform site installations, technology refresh, develop implementation plans and schedules Research and implement enterprise-wide network solutions, capabilities, and enhancements to support customer business / mission goals and objectives, while complying with the network architecture and design standards Produce SDLC project artifacts such as requirements, design documents, diagrams, and other required documentation Troubleshoot network … root cause analysis and documenting information in tickets and knowledge repositories; support network traffic analysis and bandwidth optimization efforts Coordinate system maintenance, monitoring, and installation of multiple WAN / LAN environments encompassing multiple specializations, platforms, and technologies Assist with development and execution of test plans and supporting documentation for network configuration upgrades, additions, or revisions Collaborate and capture … Qualifications: Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field (or equivalent experience). 3+ years of relevant experience 8570 Compliant certifications (IAM III / IAT III) and CCNA certification Hands-on experience with Cisco routing, switching, and firewall technology Experience with primary network topologies, LANs, WANs and other common network standards Strong understanding More ❯
London, England, United Kingdom Hybrid / WFH Options
Global Relay
Minimum 2 years SaaS implementations experience which must include experience in a client facing role. Adaptability to work with multiple teams on projects with varying degrees of flexibility / rigidity at different points in the development cycle. Ability to understand technical as well as business requirements and accurately capture technical notes. Demonstrates a history of being able to … solving skills with significant attention to the smallest details. Strong understanding of domains, networking principles, message flow, email protocols, and DNS. Advanced knowledge of networking fundamentals (AD, ADFS, TCP/IP, DNS, DHCP, VPN, LDAP, SSO). Microsoft Exchange, Office365, Google G Suite, and / or Domino Server experience, particularly around journaling … are required. Proficiency with MS Windows Server / workstations and command line interface. Cisco IronPort experience, particularly around disclaimer engines and egress filtering, is an asset. Ability to create and run Excel Macros, create and run scripts to automate tasks, SQL knowledge, and the ability to create and run SQL scripts preferred. Basic scripting (PowerShell, Perl, VBScript, etc. More ❯
second-line role Strong troubleshooting skills across Windows operating systems and Microsoft 365 Hands-on experience with Active Directory, including Azure AD Solid understanding of core networking protocols - TCP/IP, DNS, DHCP, VPNs, and VLANs Practical knowledge of Cisco Meraki for switches, firewalls, and wireless networks Familiarity with virtualisation technologies, especially Hyper-V … consent to your application being processed and submitted to the client for this vacancy only. KEY SKILLS - IT Support, 2nd Line, Networking, Windows Server, Active Directory, Office 365, TCP/IP, DNS, DHCP, VPN, Cisco Meraki, Hyper-V, Helpdesk, Infrastructure, CCNA, ITSM. More ❯
second-line role Strong troubleshooting skills across Windows operating systems and Microsoft 365 Hands-on experience with Active Directory, including Azure AD Solid understanding of core networking protocols – TCP/IP, DNS, DHCP, VPNs, and VLANs Practical knowledge of Cisco Meraki for switches, firewalls, and wireless networks Familiarity with virtualisation technologies, especially Hyper-V … consent to your application being processed and submitted to the client for this vacancy only. KEY SKILLS – IT Support, 2nd Line, Networking, Windows Server, Active Directory, Office 365, TCP/IP, DNS, DHCP, VPN, Cisco Meraki, Hyper-V, Helpdesk, Infrastructure, CCNA, ITSM. More ❯
second-line role Strong troubleshooting skills across Windows operating systems and Microsoft 365 Hands-on experience with Active Directory, including Azure AD Solid understanding of core networking protocols – TCP/IP, DNS, DHCP, VPNs, and VLANs Practical knowledge of Cisco Meraki for switches, firewalls, and wireless networks Familiarity with virtualisation technologies, especially Hyper-V … consent to your application being processed and submitted to the client for this vacancy only. KEY SKILLS – IT Support, 2nd Line, Networking, Windows Server, Active Directory, Office 365, TCP/IP, DNS, DHCP, VPN, Cisco Meraki, Hyper-V, Helpdesk, Infrastructure, CCNA, ITSM. #J-18808-Ljbffr More ❯
of expertise, with supporting roles in other areas. Technical Requirements: Minimum 7 years of demonstrated experience in network engineering, design, implementation and maintenance Proficiency with Juniper (preferred) and / or Cisco networking devices Certifications with Juniper (preferred) and / or Cisco networking devices Proficiency with multiple network protocols, to include, TCP/IP, IPv4, UDP (and multicast), TLS, VPLS, GRE Experience configuring, maintaining, or troubleshooting: Routing Protocols (i.e. OSPF, EIGRP, and BGP). EVPN (Ethernet over BGP / VXLAN or MPLS / VXLAN) Multicast, STP, Virtual LAN's and Trunking (VLAN's). Local Area Network (LAN) and / or Wide Area … Network (WAN). Network Controlled Interfaces / Security: Firewall, ACL. Security+ or CISSP Certification Excellent communication skills and ability to work well in groups Desired Skills: Juniper Certifications (JNCIA / S / P / E) Cisco Certifications (CCNA, CCNP) Experience engaging with and working seamlessly within a team Experience with scripting languages More ❯
NETWORK ENGINEER for a full-time position at one of our premier clients located in Fairfax, Virginia. To be considered for this position, you must have a TS / SCI level clearance. You will be part of a small but strong senior level networks team responsible for architecting, designing, installing, implementing, and maintaining a large multi-agency program … of expertise, with supporting roles in other areas. Technical Requirements: • Minimum 7 years of demonstrated experience in network engineering, design, implementation and maintenance • Proficiency with Juniper (preferred) and / or Cisco networking devices • Certifications with Juniper (preferred) and / or Cisco networking devices • Proficiency with multiple network protocols, to include, TCP/IP, IPv4, UDP (and multicast), TLS, VPLS, GRE • Experience configuring, maintaining, or troubleshooting: Routing Protocols (i.e. OSPF, EIGRP, and BGP). EVPN (Ethernet over BGP / VXLAN or MPLS / VXLAN) Multicast, STP, Virtual LAN's and Trunking (VLAN's). Local Area Network (LAN) and / or Wide Area More ❯
Job Description: IT - Network Engineer Position Type: Full-Time Location: Chantilly Clearance: TS / FSP Skill Level: Subject Matter Expert Position Overview: We are seeking a highly skilled and experienced IT - Network Engineer to join our team and support the Sponsor's office in building and operating a hybrid-cloud mission infrastructure. This infrastructure supports COTS, GOTS, and … Integration: , o Provide end-to-end support for field network and forensic capabilities. o Support network lifecycle stages, including design, configuration, testing, deployment, and maintenance. o Provide 24 / 7 on-call technical support to worldwide users. o Prepare SOPs and other documentation to support the success of field users and the program. o Provide technical support for … with Hypervisor deployments. 12. Expertise in forensic software, such as Cellebrite, XRY, FTK, and Autopsy. 13. Knowledge of Gateway Redundancy Protocols (HSRP, VRRP). 14. Experience with network IP address management. 15. Familiarity with network security protocols like firewalls and ACLs. 16. Experience with routing protocols (OSPF, EIGRP, BGP). 17. Familiarity with vulnerability scanning tools. 18. Experience More ❯
