Network Architect (Juniper and Cisco) System OneNetwork Architect (Juniper and Cisco)Washington, DC$100 / hourCandidates should be able to demonstrate previous success leading or supporting large-scale enterprise Juniper and Cisco deployments , navigating complex stakeholder environments, and delivering practical architecture solutions. The ideal candidate will have a proven track record leading complex enterprise network deployments and the ability to work effectively with both the client and technology teams while maintaining an objective, consultative approach.
NewSenior Network Engineer/IPv6 SME System OneSenior Network Engineer/IPv6 SMEAlexandria, VA$72.25–$87 / hourDesign, implement, and troubleshoot enterprise-scale IP networks, including enterprise routing, switching, and protocols such as BGP, OSPF/OSPFv3, EIGRP, IS-IS, IPv4/IPv6, DNS, DHCP/DHCPv6, ICMP/ICMPv6, TCP/IP, and SNMP. • Relevant certifications such as CCIE/CCNP, JNCIP/JNCIE, IPv6 credentials, Azure Netowrk Engineer, AWS Advanced Networking, CISSP, Security+, or equivalent are preferred.
NewArchitect - VCF Design & Architecture Lead Calibre SystemsArchitect - VCF Design & Architecture LeadAlexandria, VACALIBRE is an employee-owned mission focused solutions and digital transformation company, is looking to fill multiple opportunities within the Washington, DC metro area. This role leads end-to-end architecture from discovery through design and governance while acting as a trusted advisor in complex, mission-critical environments.
Enterprise Architect PlanIT GroupEnterprise ArchitectReston, VAAdvanced routing and traffic engineering (BGP, OSPF/ISIS), path control, and convergence considerations SDWAN and secure connectivity patterns (SASE/SSE where applicable), including segmentation and policy design, QoS design (marking, queuing and shaping), performance engineering (latency/jitter/loss), and capacity planning. • Recommend optimized WAN solutions to Chief Engineer in support of current and long-range planning; collaborate with technical leads to select, recommend, and obtain approvals for tools and technologies that improve efficiency, reduce cost, and increase customer satisfaction.
Lead Specialist, Federal Solutions Architect KPMGLead Specialist, Federal Solutions ArchitectWashington, DCIf you're looking for a firm with a strong team connection where you can be your whole self, have an impact, advance your skills, deepen your experiences, and have the flexibility and access to constantly find new areas of inspiration and expand your capabilities, then consider a career in Advisory. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness, and safeguard business operations and company reputation.
AWS Cloud Security Architect System OneAWS Cloud Security ArchitectReston, VA$156,300 / yearProvide security architecture guidance for enterprise applications, AWS cloud environments, hybrid infrastructure, cybersecurity platforms, APIs, containers, data solutions, and AI enabled applications. Support secure AI/GenAI adoption, including LLM integrations, RAG implementations, prompt security, data protection, access controls, monitoring, logging, and human in the loop safeguards.
Cloud Architect / Engineer LeidosCloud Architect / EngineerWashington, DC$131,300–$237,350Proven expertise with Generative AI infrastructure, including: Production-ready Retrieval-Augmented Generation (RAG) pipelines, Scalable vector databases (e.g., Pinecone, Weaviate, Milvus, FAISS, or managed services) with indexing, clustering, and optimized retrieval, GPU/TPU compute clusters, managed container orchestration (Kubernetes/EKS/AKS/GKE), and auto-scaling for large language model (LLM) workloads. Demonstrated experience implementing enterprise security and compliance frameworks (SOC 2, ISO 27001, HIPAA, PCI-DSS, CMMC, FedRAMP, etc.), including encryption, threat monitoring, and zero-trust architectures.
Active Directory Architect / Engineer LeidosActive Directory Architect / EngineerSilver Spring, MD$131,300–$237,350Design, deploy, upgrade, and administer Active Directory Domain Services, including domain controllers, forests, domains, trusts, and replication topologies (i.e. Manage and optimize Group Policy Objects (GPOs), OU structures, and security baselines; including object management through bulk operations and automation, Troubleshoot and resolve complex AD-related issues, including authentication failures, replication problems, DNS issues, and Kerberos/NTLM problems, Plan and execute Active Directory migrations, consolidations, and upgrades (of both underlying server infrastructure and overall forest/domain functional levels), Develop and maintain disaster recovery, backup, and restore procedures for AD environments (including AD Recycle Bin and authoritative restores), Monitor AD health and performance using tools such as Microsoft System Center, Azure Monitor, or third-party solutions). Deep expertise in designing, deploying, upgrading, and administering Microsoft Active Directory Domain Services (AD DS), including domain controllers, multi-domain/forest architectures, trusts, replication topologies, Group Policy Objects (GPOs), OU design, and security baselines.
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.
NewPrincipal Pre-Sales Architect - TS/SCI-FSP Clearance JobotPrincipal Pre-Sales Architect - TS/SCI-FSP ClearanceWashington, DC$180,000–$250,000 / yearThis Principal Presales Architect leads the design of complex technology solutions for Federal Government customers, aligning a broad portfolio of hardware, software, cloud, services, and third-party technologies to business and technical requirements. With a global customer base including all sectors, from Fortune 500 to up-and-coming startups, we over diverse product lines including, but not limited to, Cloud Services, Artificial Intelligence, Storage, Networking, Supercomputing, and Digital Transformation offerings.
Enterprise Architect/Systems Engineer LeidosEnterprise Architect/Systems EngineerBethesda, MD$131,300–$237,350Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. 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.
Solution Architect / Engineer LeidosSolution Architect / EngineerCheltenham, MD$131,300–$237,350This role combines high level architectural design with deep technical implementation, requiring an individual who can define target-state architectures, build and optimize solutions, and guide modernization across hybrid and multi cloud environments. Proven hands-on experience designing and implementing solutions across hybrid/multi-cloud environments (AWS and Azure strongly preferred), on-premises data centers, virtualization platforms, and containerized workloads (e.g., Kubernetes/Docker).
NewApplication Cloud Engineer System OneApplication Cloud EngineerHerndon, VARemoteKubectl proficiency and general Kubernetes object management (deployments, services, configmaps, secrets, RBAC). System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
Senior DevOps Engineer LeidosSenior DevOps EngineerBurke, VA$107,900–$195,050p>The Leidos Spatial Solutions Division has an exciting opportunity for a senior DevOps Engineer to assist with the development, integration, deployment, and sustainment of mission critical systems that enable NGA's Geospatial Intelligence (GEOINT) mission collecting sciences, technology and tradecraft measuring and modeling the Globe to provide three-dimensional accuracy of every point in, on, or above the Earth. June 1, 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.
Lead Systems Engineer LeidosLead Systems EngineerWashington, DC$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. June 22, 2026For 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.
NewNetwork Architect / Lead Network Engineer 22nd Century Technologies, Inc.Network Architect / Lead Network EngineerMcLean, VAWe are seeking a senior Network Architect/Lead Network Engineer to lead architecture, engineering, operations, security, modernization, and performance management for a large distributed enterprise network. Required Qualifications Bachelor's degree in IT, Computer Science, Engineering, or related field.
Network Engineers, Senior Engineers & Architects (CBP) Agile DefenseNetwork Engineers, Senior Engineers & Architects (CBP)Ashburn, VirginiaYou will work on routing and switching, WAN and LAN transport, wireless, segmentation, and firewalls in a mixed Cisco, Juniper, and Arista environment, alongside field deployment teams, cloud engineers, and security staff. U.S. Customs and Border Protection runs continuous operations across more than 300 land, air, and sea ports of entry, plus Border Patrol stations and the Air and Marine Operations Center.
Senior Network Architect Bridge Core (BCore)Senior Network ArchitectChantilly, Virginia$175,000–$195,000 / yearFull timeBcore accelerates decisive advantage for warfighters and intelligence professionals by fusing human insight, rapid-fire engineering, precision-measured outcomes, and relentless grit into mission-ready solutions. A Bachelor’s or Master’s degrees in computer science with eleven (11) years of relevant experience and education with the following skillsets: Must have significant experience with Python, Java, Automation and Systems Design.
Sr. Network Architect SME System OneSr. Network Architect SMEWashington, District of ColumbiaThe ideal candidate is not only a subject matter expert in BGP, OSPF and VXLANs, but also a well-rounded network engineer who can support day-to-day operations, contribute to security and visibility platforms, and drive innovative improvements across the network. Design, implement, and operate modern data center fabrics (spine-leaf, VXLAN/EVPN) including integration with cloud and virtual infrastructure platforms with a focus on stability, scalability, and operational simplicity .
Network Architect ManTech International CorpNetwork ArchitectLaurel, MD$128,000–$214,400 / yearAs a Senior Network Engineer/Architect, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services. Preferred Qualifications: Provides advice & guidance to IT peers & subordinates regarding complex network design, monitoring, maintenance and implementation, consistent with the general principles followed within campus networks & generally accepted industry best practices.