Senior Systems Modeling Engineer, Beam Planning & Network Optimization Blue OriginSenior Systems Modeling Engineer, Beam Planning & Network OptimizationWashingtonAs a large-scale low Earth orbit constellation operating thousands of satellites across multiple orbital shells, TeraWave must solve resource assignment problems of extraordinary combinatorial complexity — from deciding which beams illuminate which ground cells at each moment in time, through routing data across a dynamic optical inter-satellite link mesh with thousands of nodes and time-varying topology, to assigning satellites to gateways and managing handovers as the constellation moves overhead. As part of this team, you will also contribute to the broader modelling of TeraWave's constellation performance — including its ability to maintain consistent customer service through progressive deployment phases, satellite failures, and orbital manoeuvres — bringing the network optimization perspective into system-level figures of merit and ensuring that resource assignment trades are evaluated in the context of their impact on end-to-end service delivery.
Service Now Developer - Integration Engineer Emergent TechnologiesService Now Developer - Integration EngineerReston, VirginiaA Bachelor’s or Master’s degree in Computer Science (or a related field) is preferred, along with 11+ years of relevant experience , including: Hands-on experience with ServiceNow, including ITSM, ITOM, and CMDB . Emergent Technologies Inc. is seeking a talented and motivated ServiceNow Developer / Integration Engineer to join our growing technology team in support of a mission-critical Government customer.
Infrastructure Engineer NorthstratInfrastructure EngineerSterling, VAPay Range There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Northstrat is seeking a highly skilled Infrastructure Engineer to orchestrate and execute over the air (OTA) software deployments to globally fielded systems in a potentially degraded, disconnected, intermittent, and limited (DDIL) connectivity environment.
Firewall Operations Engineer | Secret Clearance ConcerasFirewall Operations Engineer | Secret ClearanceBeltsville, MDFirst-hand experience with supporting the monitoring and configuration of Firewall/DMZ infrastructure including Network and Application Firewall Packet Filtering technologies (Palo Alto, Palo Alto virtual FW (cloud), FortiGate, Azure Firewall, Cloudflare, Cisco Email Security Appliances (ESA), A10 (Load Balancer), and proxy devices. Implements firewall rules and policies, perform troubleshooting of firewalls (Palo Alto, Cloud Palo Alto, and FortiGate), CISCO Email Security Appliance (ESA), A10 (load balancer), Proxy platforms, URL filtering across platforms, and analyzing network traffic captures.
Infrastructure Engineer Electrosoft Services, IncInfrastructure EngineerWashington, DCThe engineer is responsible for inventory, installation, replacement, troubleshooting, upgrades, preventative maintenance, ticket response, field dispatch, system documentation, and coordination with STIM technical teams, federal stakeholders, OPDIV points of contact, and logistics/inventory staff. This role supports security tools, supporting infrastructure, client computer systems, servers, workstations, switches, KVM/console devices, APC/rack management devices, and related network/security equipment.
Lab Systems Engineer / Top Secret with SCI eligibility PeratonLab Systems Engineer / Top Secret with SCI eligibilityArlington, Virginia$112,000–$179,000 / yearFull timeCollaborate directly with malware analysts and reverse engineers to implement the specific topologies, device networks, and virtual sandboxes they require, ensuring total network containment and rapid environment resets. Infrastructure Design & Solutioning: Design and build underlying infrastructure solutions to support the virtualization, emulation, and interconnection of various network device types and analysis systems as requested by the reverse-engineering team.
Voice & Video Engineer (Tier II) PeratonVoice & Video Engineer (Tier II)Washington, D.C.$104,000–$166,000 / yearFull timeThe Voice and Video Technician is responsible for but not limited to: Tier II phone support of reported customer incidents supporting network conference room video systems, desktop video systems, video conferencing systems, video gateways, and video control systems. We support a secure, worldwide, high-performance communications network comprised of real-time interactive applications allowing complex national and worldwide communications.
Security Engineer SCOUT SolutionsSecurity EngineerWashingtonHands-on network operations experience in multi-site Windows and Linux environments – Data circuits, Firewall/VPN, TCP/IP and routing protocols, Switches (CISCO), File servers (Linux), Data storage, and Windows servers running COTS and custom applications etc. Strong knowledge of Cloud related security, engineering, design, architectural, maintenance, business modeling, or similar areas related to the information technology project being performed.
Senior Computer Systems Engineer / Architect – Winchester, VA JobsonboardSenior Computer Systems Engineer / Architect – Winchester, VACharles Town, West VirginiaBased full-time at our headquarters in Winchester, VA , this position provides systems engineering and IP network support focused on emergency services routing, location information provisioning, interoperability coordination, and technical risk reduction supporting Army Public Safety Answering Point (PSAP) connectivity. We are seeking a senior-level Systems Engineer to support Enhanced 9-1-1 (E-911) implementation activities associated with Army Voice Modernization.
Senior Cyber Security Security Engineer - Comply-To-Connect (C2c) CACI International Inc.Senior Cyber Security Security Engineer - Comply-To-Connect (C2c)Chantilly, VA$103,800–$218,100 / yearPay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. This role centers on engineering and sustaining Comply‑to‑Connect (C2C) capabilities that protect critical enterprise systems, enhance visibility, and enable mission-focused decision making.
Senior Firewall Engineer CACI International Inc.Senior Firewall EngineerSpringfield, VA$75,200–$158,100 / yearThe OpportunityAs a member of the TCS Network Security Services (NSS) team, you will work with both corporate and customer leadership to research, analyze, and implement enterprise-wide network security solutions/capabilities/enhancements to support customer business/mission goals and objectives. Pay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications.
Firewall Operations Engineer BelcanFirewall Operations EngineerBeltsville, MD$90,000–$110,000 / yearFirst-hand experience with supporting the monitoring and configuration of Firewall/DMZ infrastructure including Network and Application Firewall Packet Filtering technologies (Palo Alto, Palo Alto virtual FW (cloud), FortiGate, Azure Firewall, Cloudflare, Cisco Email Security Appliances (ESA), A10 (Load Balancer), and proxy devices. Implements firewall rules and policies, perform troubleshooting of firewalls (Palo Alto, Cloud Palo Alto, and FortiGate), CISCO Email Security Appliance (ESA), A10 (load balancer), Proxy platforms, URL filtering across platforms, and analyzing network traffic captures.
Platform Infrastructure Engineer CACI ProductsPlatform Infrastructure EngineerColumbia, MD$116,587–$154,200 / yearYou'll work closely with software engineers, network engineers, security engineers, and technical leadership to deliver reliable, scalable infrastructure while helping modernize our architecture toward cloud-native and hybrid-cloud environments. Ncyber is seeking a Platform Infrastructure Engineer to design, build, automate, and maintain the infrastructure that powers mission-critical software systems supporting the National Security Community.
IT Security Engineer AHU TechnologiesIT Security EngineerWashington, District of ColumbiaEstablish and maintain regular written and in-person communications with the organization’s executives, decision-makers, stakeholders, department heads, and end users regarding pertinent network activities. The Network Engineer will gain organizational commitment for all network infrastructure plans and initiate and participate in projects to evaluate technologies and methods for implementing these plans.
Senior Infrastructure & Cloud Engineer (IaaS) Acuity INCSenior Infrastructure & Cloud Engineer (IaaS)UNAVAILABLE, DCWorking closely with the Cloud Technical Lead, Cloud Engineers, Automation Engineers, Network Engineers, Cybersecurity teams, and government stakeholders, you will provide Tier 3 infrastructure engineering and troubleshooting, support infrastructure lifecycle modernization, and ensure the availability, security, resiliency, capacity, and performance of enterprise systems across domestic, overseas, on-premises, and cloud environments. Provide significant hands-on administration and engineering support for enterprise VMware environments, including VMware ESXi, vCenter, clusters, virtual networking, resource management, upgrades, patching, and lifecycle activities.
Video Teleconference (VTC) Engineer – Level 1 RividiumVideo Teleconference (VTC) Engineer – Level 1Quantico, VirginiaThis role is responsible for the design, implementation, operation, maintenance, and support of enterprise video conferencing and unified communications systems supporting mission-critical operations. The VTC Engineer - Level 1 serves as a technical lead supporting enterprise Video Teleconference (VTC) and unified communications infrastructure for the NCIS IT enterprise.
Cyber Security Engineering Specialist IV/ Firewall Engineer CACICyber Security Engineering Specialist IV/ Firewall EngineerSpringfield, VirginiaTeam CACI on our TCS Program has an exciting and challenging opportunity available for a Network Security Engineer supporting an Intelligence Community customer’s wide-area (WAN), local-area (LAN) and campus-area (CAN) networks across multiple security domains. Pay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications.
Firewall Engineer LeidosFirewall EngineerArlington, VirginiaAs part of this task order, Leidos will manage the commercial cloud migration and fully automate the continuous development & continuous integration environment, fourth estate consolidation, professionalize services – ITIL/DevSecOps based processes, improve the customer experience 1st call resolution, and achieve development of a service catalog for Defense Working Capital Fund (DWCF) Model. Identify and remediate misconfigurations, conflicting rules, security gaps, firewall and load balancer security issues, optimize rule-sets, and enhance the overall security posture and performance of Firewalls and Load Balancers.
Principal Endpoint Security Systems Engineer LeidosPrincipal Endpoint Security Systems EngineerBethesda, Maryland$131,300–$237,350 / yearWorking in a hybrid cloud/on-prem mission environment the engineer will support integration of Linux and Windows hosted mission systems with the endpoint security product and maintaining the scan policies to ensure proper protection of mission systems from external threats. January 21, 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.
Senior Storage Systems Engineer (VMware)- 3649546 CTCSenior Storage Systems Engineer (VMware)- 3649546Manassas, VirginiaWith offices in Washington DC and San Diego, CA, CTC is a leading technology company providing lifecycle IT, data analytics, cloud managed hosting services, agile software development, DevOps, Test Automation, Cyber Security, and infrastructure solutions. Required Experience & Expertise in the following areas : In depth knowledge of network switching in Dell Blade systems and Firewall Management for Virtual Infrastructures.