Network & Security Infrastructure Engineer
$57.69 - $62.5 per hourECS Federal
Job DescriptionEverforth ECS is seeking an Network & Security Infrastructure Engineer to work in our Washington, DC office / remote. The role is contingent upon additional funding.We are seeking an experienced and technically versatile Network & Security Infrastructure Engineer to take on a high-impact, dual-function role within a large and complex enterprise environment. This position sits at the crossroads of network infrastructure, virtual environment engineering, and security operations, and it requires genuine depth across all three, not surface-level familiarity.The near-term priority for this role is significant: you will lead a major re-architecture of the organization's VMware ESXi virtual environment to support comprehensive firewall and VLAN implementations that deliver proper network segmentation across the enterprise. This is a foundational infrastructure initiative with direct security implications, and it will require someone who can think and execute at the architectural level within a virtualized environment.Beyond that primary objective, this role carries ongoing responsibility across two organizational teams. You will provide dedicated firewall support to the Architecture and Engineering division, administering the enterprise's internal and cloud-facing firewall environments. On the networking side, you will support the security operations division, monitoring and maintaining a Cisco-based network infrastructure and an Aruba wireless environment from a security-first perspective.This role is built for someone who can operate with equal confidence in a virtual environment console, a firewall policy manager, and a network operations context.Salary Range: $120,000 - $130,000General Description of BenefitsJob RequirementsVirtual Environment & Network SegmentationHands-on experience designing and re-architecting VMware ESXi environments in an enterprise settingAbility to plan and implement VLAN segmentation strategies within virtualized infrastructure to support firewall enforcement and proper traffic isolationExperience configuring virtual switches, distributed switches, and virtual port groups in support of security segmentation objectivesFamiliarity with NSX or equivalent software-defined networking (SDN) platforms as they relate to micro-segmentation and east-west traffic controlAbility to document virtual network architecture clearly and thoroughly, including design decisions, configurations, and future-state plansFirewall AdministrationHands-on experience configuring and administering enterprise-class firewall technologies, with specific experience on Check Point and Palo Alto platformsAbility to implement new firewall architectures, upgrades, and feature rollouts as directedExperience administering firewall policy including updates, upgrades, policy administration, and validationProficiency managing and tuning software blades and associated security features such as IPS, URL filtering, Application Control, antivirus, and advanced malware detectionAbility to review and implement changes consistent with existing firewall policies while maintaining thorough, up-to-date documentationStrong knowledge of firewall rules, security policies, and security operations within a large enterprise environmentWillingness to work outside of normal business hours when required to support outage resolution or planned maintenanceNetwork Infrastructure & SecurityStrong hands-on experience with Cisco network infrastructure including routing, switching, and network security configurations in an enterprise settingExperience supporting and securing Aruba wireless access point environmentsSolid understanding of core networking protocols including TCP/IP, BGP, OSPF, VLANs, and VPNsAbility to monitor and analyze network architecture, communication flows, policies, and protocols from a cybersecurity perspectiveExperience identifying and isolating network-based security issues quickly during incidents and outagesFamiliarity with network access control concepts and how they integrate with broader security operationsCollaboration & DocumentationAbility to collaborate across teams including cybersecurity, systems administration, and technology support partnersExperience supporting security continuous monitoring efforts such as risk assessments, vulnerability identification, and patch coordinationAbility to create and maintain clear, accurate documentation for virtual, network, and firewall configurations, procedures, and troubleshooting stepsComfortable communicating technical findings and infrastructure risk clearly to both technical peers and senior leadershipA minimum of 5+ years of experience in network security engineering or a closely related infrastructure discipline is required, with direct hands-on experience on both Check Point and Palo Alto platforms strongly preferred. Candidates who bring demonstrated experience with VMware ESXi re-architecture and VLAN segmentation design — in addition to enterprise networking and firewall administration — will be given strong preference over candidates with depth in only one or two of these areas.Job DetailsJob Type: Full-timeCategory: CybersecuritySalaried: Salaried
$120k - $130k
Job DescriptionEverforth ECS is seeking an Network & Security Infrastructure Engineer to work in our Washington, DC office / remote. The role is contingent upon additional funding.We are seeking an experienced and technically versatile Network & Security Infrastructure...SuggestedWork at officeRemote work$98.4k - $160k
...learn, grow, and make an impact. Join us!Job Description:The Network Security Engineer is responsible for supporting multiple security... ...RADIUS.Experience with Cisco Catalyst, Nexus, and wireless infrastructure.Experience with packet capture and protocol analysis using...SuggestedFull timeWork at officeFlexible hoursShift workDay shift$130k - $160k
...environments and opportunities for career growth and advancement.Our Technology team is seeking an Infrastructure Security Engineer to design, build, and secure the cloud, network, and identity infrastructure that runs a mixed-use real estate portfolio. Reporting to the...SuggestedFull timeWork experience placement$107.9k - $195.05k
Eclypsium Cyber Infrastructure EngineerLocation: Suitland, MDClearance... ...Eclypsium Cyber Infrastructure Engineer in Suitland, MD to deploy,... ...enterprise hardware and firmware security platform used for device... ...supporting Computer Network Defense (CND) operations and...SuggestedFull time$107.9k - $195.05k
Tanium Cyber Infrastructure EngineerLocation: Suitland, MDClearance Required... ...Tanium Cyber Infrastructure Engineer to manage endpoint... ...across NAVINTEL enterprise networks to support our customer in Suitland... ...cyber infrastructure or security tool engineering.Demonstrated...SuggestedFull time$100k - $258k
...Infrastructure Security Engineer Austin, Texas; London, England, United Kingdom; New York, New York; Palo Alto, California; Washington, D.C.... ...technologies and their security implications ~ Knowledge of network security concepts and protocols ~ Experience with...Temporary workRelocation$95 - $125 per hour
...Job Summary: Our client is seeking a Security Infrastructure Support Senior Security Engineer to join their team! This position is located in Bethesda, Maryland. Duties: Design, deploy, and maintain enterprise IT security systems across hybrid...Local area$107.9k - $195.05k
Description Eclypsium Cyber Infrastructure Engineer Location: Suitland, MD Clearance Required: Active... ...the enterprise hardware and firmware security platform used for device integrity,... ...Demonstrated experience supporting Computer Network Defense (CND) operations and...Local areaImmediate start- ...services and solutions in: National Security Programs Professional,... ...Contingent Position Title: Security Engineer (Infrastructure) Location:Arlington, VA Security... ...include Operating System (OS), database, Network Fabric assets and Wireless Communications...Full timeFor contractors
$145k - $200k
Washington, D.C.Information Security /Full-time /HybridA World-Changing... ...anomalies, or reverse-engineered a novel persistence mechanism... ...Palantir's global Windows infrastructure. Your team runs 24/7 prevention... ...across disk, memory, and network artifacts on Windows systems...Full timeWork experience placementWork at officeRemote workWork from homeRelocation package$107.9k - $195.05k
Cyber Defense Infrastructure Support EngineerLocation: Suitland, MDClearance:... ...Defense Infrastructure Support Engineer in Suitland, MD, you will build... ...configure, integrate, and maintain the security systems that help protect critical TS/SCI networks and keep essential...Full timeLocal area- GuidePoint Security provides trusted cybersecurity expertise, solutions and services that... ...contractors. We are growing our federal presales engineering team and looking for technically... ...technology.We are seeking a Network Security Engineer who will be part of a...Contract workFor contractorsRemote workFlexible hours
$98.4k - $160k
...America, you can build a successful career with opportunities to learn, grow, and make an impact. Join us!Job Description:The Network Security Engineer is responsible for supporting multiple security engineering efforts to deliver enterprise security capabilities. Key...Full timeWork at officeFlexible hoursShift workDay shift- ...hands-on configuration, operation and monitoring of all IT network security devices to include firewalls, remote access appliances, and... ...analysis, and incident handling and forensics, Public Key Infrastructure (PKI) and two-factor authentication solutions.)Analyzes and...Temporary workRemote work
- ...Consulting at DescriptionProSidian seeks a Mid-Level InfoSec Security Engineer (Focus On Network Security) Consultant focusing on Cyber-Security/... ...for the Client Agency Information Security Technology Infrastructure.DESCRIPTION OF WORK: The Client Agency has established...Full timeFor contractorsWork experience placementInternshipWork at officeMonday to FridayShift work
- ...career and customer-oriented Senior Cloud Information System Security Engineer (ISSE) to join our team in Washington, D.C..... ...limited to: Identify information protection needs for an IS and Network Environment. Define IS and Network Environment security requirements...Work at office
$120k - $130k
...DescriptionEverforth ECS is seeking a Cloud Security Engineer to work in our Washington, DC office /... ...and hardening the Linux server infrastructure that supports them.Your work spans two... ...Linux environmentsWorking knowledge of network protocols, firewall management, and secure...Work at officeRemote work$140k - $170k
Job DescriptionEverforth ECS is seeking a Cloud Security Engineer to work in our Arlington, VA office/remote. We’re looking for a security engineer... ...scans of web applications, APIs, servers, databases, and network devices Perform risk-based analysis of findings including...Work at officeRemote work$107.93k - $188k
...organizations operate, and securing those environments requires... ...platforms. As a Cloud Security Engineer, you will help assess and... ...identity and access management, network security, encryption,... ...posture management tools, or infrastructure as code toolsMust be legally...Local area$107.93k - $188k
...organizations operate, and securing those environments requires... ...platforms. As a Cloud Security Engineer, you will help assess and... ...identity and access management, network security, encryption,... ...posture management tools, or infrastructure as code toolsMust be legally...Local area$130k - $180k
OverviewAs a Senior Cloud Security Engineer, you will work within our growing DevSecOps practice... ...and DevOps practices such as infrastructure as code and confirmation management automation... ...activities around automated server or network configurations, large-scale software...$103.8k - $218.1k
Job Title: Cloud Security EngineerJob Category: Information TechnologyTime... ...* *The Opportunity:The Cyber Engineering team is responsible for cybersecurity infrastructure, providing guidance,... ...Virtual Machine Images), virtual networking (OVS, AWS, Azure, VMWare, Nutanix...Contract workWork experience placementLocal areaFlexible hours$99k - $225k
Cloud Security Engineer, SeniorThe Opportunity:Define, communicate, and implement cybersecurity architecture and... ...processes for cloud environments across multiple network domains. Collaborate across our cloud infrastructure delivery team and with stakeholders using an...Full timeContract workPart timeWork at officeLocal areaRemote work$140k - $150k
...seeking a pragmatic and hands-on Cloud Security Engineer to strengthen the firm's Azure... ...individual will partner closely with Infrastructure, Engineering, Enterprise Applications... ...implement Azure security baselines, secure networking patterns, key management practices,...Full timeTemporary workH1bImmediate startWorldwide$131.8k - $290k
Job Title: Senior Microsoft Cloud Security EngineerJob Category: Information TechnologyTime... ...for a Senior Microsoft Cloud Security Engineer as we deploy, manage, and hardening our... ...Cybersecurity certifications: Security+- Strong networking, firewall, VPN, and segmentation...Contract workWork experience placementWork at officeFlexible hours- ...Network Security Engineer BDR Solutions, LLC, (BDR) supports the U.S. Federal Government in successfully achieving its mission and goals... ...Responsibilities: Design, implement, and maintain network infrastructure, including LAN, WAN, VPN, and wireless networks....Remote work
- ...Network Security Engineer Anywhere Type: Consulting Category: Development Industry: Other Workplace Type: Remote Standard Hours: Open Reference ID: JN -092026-108525 Date Posted: 09/08/2026 Shortcut: Description Recommended Jobs...Hourly payLocal areaRemote workWeekend workAfternoon shift
- ...Senior Network Security Engineer – DoD/Resilience Focus ACO Advanced Resilience is seeking experienced Technical SETA candidates to provide on-site support to the Advanced Resilience portfolio in the area of next-generation classified network development for enterprise...Full time
- ...We are seeking a Senior Network Security Engineer for an operations-first role supporting enterprise network security infrastructure across on-premises, remote-access, hybrid-cloud, and cloud-connected environments. This is not primarily an architecture/design role. The...Remote workFlexible hoursNight shift
- Leidos is seeking a Cyber Defense Infrastructure Support Engineer in Suitland, MD. The role involves building, configuring, integrating, and maintaining security systems for TS/SCI networks. You will provide Tier 3 escalation support, leading engineering and administration...
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