NewApplication Integration Engineer System OneApplication Integration EngineerMcLean, VAResponsibility 2: Develop, configure, test, and support RESTful APIs, service integrations, messaging flows, data transformation logic, orchestration components, and interface services connecting legacy Java applications with cloud-native or microservices platforms. Requirement 3: Strong proficiency in Java, Spring Boot, RESTful APIs, microservices, and integration patterns, especially between Java applications and modern cloud-native platforms.
Senior Oracle Database Enterprise Architect System OneSenior Oracle Database Enterprise ArchitectMerrifield, VA$125,000–$135,000 / yearExperience 10+ years of IT experience, with significant experience in enterprise architecture, solution architecture, or Oracle database architecture. System One IT is staffing a direct-hire opening for a Senior Oracle Enterprise Architect with a respected systems integrator, supporting a civilian federal end-customer.
Senior Network Engineer w/CCNP- Top Secret Clearance System OneSenior Network Engineer w/CCNP- Top Secret ClearanceWashington, DC$225,000 / yearThe ideal candidate will have extensive hands-on experience with enterprise LAN and WAN environments, advanced Cisco networking expertise, and a current Cisco Certified Network Professional certification . • Experience supporting complex network environments using technologies from Cisco and one or more additional vendors, such as Fortinet, Arista, Aruba, or Palo Alto Networks.
Network Deployment Engineer System OneNetwork Deployment EngineerReston, VARemote$55–$60 / hourInterface with Local Exchange Carriers and telecom providers regarding installation, testing and troubleshooting during deployments. • Plan, design, implement, and validate new Wi-Fi networks and wired Cisco, Meraki networks.
NewTechnical Systems Analyst System OneTechnical Systems AnalystArlington, VA$75–$80 / hourThe ideal candidate goes beyond requirements documentation and can effectively understand business challenges, develop technical solutions, collaborate with engineering teams, and support delivery through testing, validation, and deployment. This role serves as the key liaison between business stakeholders and technical delivery teams, translating business objectives into actionable technical requirements and ensuring successful delivery of data-driven solutions.
NewSenior Front-End Engineer - Onsite Interview is Required System OneSenior Front-End Engineer - Onsite Interview is RequiredWashington, DC$60–$90 / hourThe ideal candidate combines strong technical expertise with a passion for user experience, accessibility, scalability, and engineering excellence. We are seeking a Senior Front-End Engineer with deep expertise in Angular 17+, modern web technologies, and enterprise-scale UI development.
NewSoftware Packaging Engineer System OneSoftware Packaging EngineerMerrifield, VAThe engineer will work closely with End User Computing (EUC), Engineering, Infrastructure, Security, and Business stakeholders to transform traditionally installed applications into virtualized FlexApp packages that improve application delivery, reduce operational complexity, and support both Virtual Desktop Infrastructure (VDI) and physical Windows environments. We are seeking an experienced Software Packaging Engineer contractor to support our client’s EUC Software Delivery Enhancements Project, a strategic initiative focused on modernizing software packaging and application delivery across the enterprise.
NewEOIR Task Order Manager/Data Architect- EDI System OneEOIR Task Order Manager/Data Architect- EDIAlexandria, VA$175,000 / yearTechnical certifications such as CDMP, AWS Certified Data Engineer, Microsoft Certified Azure Data Engineer, or AWS/Azure Solutions Architect highly preferred. • Lead the planning, initiation, and management of the EOIR Enterprise Data Infrastructure (EDI) task order, serving as the primary liaison with the Contracting Officer and Contracting Officer Representative.
Lead AWS Cloud Platform Engineer - IaC / Automation / SRE System OneLead AWS Cloud Platform Engineer - IaC / Automation / SREReston, VA$109.05 / hourThis role is for a senior engineer who can provision AWS infrastructure with IaC and jump into production troubleshooting , log/metrics review, and root-cause analysis alongside application and architecture teams. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
NewAzure Integration & DevOps Engineer System OneAzure Integration & DevOps EngineerArlington, VA$90 / hourThe engineer will also leverage modern AI-assisted development and Microsoft Copilot capabilities to accelerate software delivery, improve code quality, automate routine engineering tasks, and help modernize existing solutions while maintaining appropriate security and governance. The successful candidate will build, deploy, automate, monitor, and support Azure-based integration solutions using services such as Azure Event Hubs, Azure Functions, Logic Apps, API Management, Service Bus, Key Vault, Storage, and Application Insights.
NewREL System Analyst System OneREL System AnalystMerrifield, VAThis role serves as a key liaison between Service Desk, engineering teams, vendors, and business stakeholders, ensuring system stability, effective communication, and successful delivery of enhancements, advisories, and releases. The System Analyst supports Real Estate Lending (REL) technology operations by providing application support, managing incidents, coordinating with business units, and driving system.
NewNOC Technician System OneNOC TechnicianWashington, DC$110,000–$120,000 / yearREQUIREMENTS Bachelor’s degree in Computer Science, Information Technology, Network Engineering, or related field from an accredited college or university, OR equivalent experience. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
NewJava Developer System OneJava DeveloperMcLean, VARemoteAs a Java Full Stack Developer, you will contribute to the development of secure, scalable, and user focused enterprise applications using Java, Spring Boot, ReactJS, RESTful APIs, microservices, relational databases, and AWS cloud technologies. You will work closely with architects, developers, DevOps engineers, Product Owners, business analysts, QA engineers, and other stakeholders to deliver mission critical solutions that support application modernization and business operations.
NewA/V Lead System Integrator System OneA/V Lead System IntegratorWashington, DC$130–$150 / yearAdditional preferred certifications: Crestron Certified Programmer or equivalent manufacturer certification, Microsoft Teams Rooms certification or equivalent, Extron Control Professional certification, CompTIA Security+ or equivalent. Oversee integration of A/V systems with CLIENT's enterprise IT infrastructure, including Microsoft Teams Rooms, network connectivity, and endpoint management.
NewSenior Application Developer (AWS/Python) onsite System OneSenior Application Developer (AWS/Python) onsiteWashington, DCSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. • Implement comprehensive logging, monitoring, and audit trails (CloudWatch, CloudTrail).
NewNetwork Engineer I System OneNetwork Engineer IColumbia, MD$100,000 / hourJob Requirements: Bachelor’s degree in Information Systems, Computer Science, Electrical or Mechanical Engineering, or other engineering related field and 1+ years of directly related network engineering experience, Or, At least 3 years of experience managing and supporting large- enterprise infrastructure/network environments - designing, planning, documenting and implementing LANs and WANs. The Network Engineer I serves as a technical consultant within multiple project teams and is responsible for the effective and timely delivery of networking solutions to meet the defined needs of the organization.
Software Integration Engineer System OneSoftware Integration EngineerAnnapolis Junction, MD$150,000 / yearWe’re hiring Software Integration Engineers to join a mission-focused Site Reliability Engineering (SRE) team supporting critical operations infrastructure. Strong Linux administration, troubleshooting, and operational support experience (any of the following): RHEL, CentOS, Rocky Linux, SLES, Ubuntu.
NewPrincipal Solutions Architect – Payer Claims Integration (Facets G6) System OnePrincipal Solutions Architect – Payer Claims Integration (Facets G6)Baltimore, MDRemote$97.25 / hourPartner with project managers, product owners, and business leadership to define and support architectural solutions supporting future business growth. Lead solutions design and analysis for complex projects, defining components, subsystems, and interfaces, ensuring seamless integration within the enterprise ecosystem.
NewCloud Engineer (onsite) System OneCloud Engineer (onsite)Washington, DCThis role will work closely with senior platform engineers, cloud infrastructure, security, and application teams to provision and maintain cloud infrastructure, automate repeatable platform operations, monitor platform health, troubleshoot issues, and support secure delivery of EDP capabilities. • Provision, configure, and maintain AWS infrastructure components supporting EDP environments, including networking, compute, storage, identity and access management, and logging/monitoring services.
NewSenior AWS Cloud Platform Engineer - Ops / Migration / IaC / Kubernetes System OneSenior AWS Cloud Platform Engineer - Ops / Migration / IaC / KubernetesReston, VA$109.05 / hourThe ideal candidate is a strong individual contributor with deep AWS expertise who enjoys solving complex technical issues, supporting mission-critical production environments, and implementing cloud-native solutions at scale. This is a hands-on technical role focused on AWS infrastructure engineering, cloud migration, automation, platform support, troubleshooting, and production operations.