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.
NewEDI 834 Functional Analyst System OneEDI 834 Functional AnalystBaltimore, MDRemote$46.90 / hourYou’ll help improve how day-to-day operations run by digging into processes, data, and performance metrics—then turning your findings into practical improvements. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
NewMobile Developer System OneMobile DeveloperMerrifield, VAMobile Developers are embedded within cross-functional Agile teams and play a critical role in delivering secure, reliable, and user-friendly digital experiences to millions of members. This role involves technical execution, platform advocacy, and collaboration across disciplines to ensure high-quality mobile solutions aligned with business goals and member needs.
NewData & Systems Analyst System OneData & Systems AnalystMcLean, VARemoteExperience using AI-assisted tools such as ChatGPT, GitHub Copilot, Amazon Q, Claude, or Amazon Bedrock for analysis, SQL, documentation, automation, or requirements work. The Data Analyst will support the Solution Architect in analyzing, validating, modeling, and documenting data and business processes that guide modernization efforts.
NewPega Developer System OnePega DeveloperMerrifield, VAFacilitate user acceptance testing to include developing and executing test cases, test criteria, scenarios, and communication with project teams; ensure acceptance of delivered solutions; validate and document results. Utilize the organization's approved software development tools and software applications to design, develop, implement and maintain low code or no code business solutions that align with business initiatives and corporate strategies.
NewNetwork Security Microsegmentation Engineer System OneNetwork Security Microsegmentation EngineerMerrifield, VARemoteThe engineer will work closely with application, infrastructure, cybersecurity, and architecture teams and will be responsible for traffic analysis, firewall/policy management, troubleshooting connectivity issues, policy lifecycle/change management, and production support across on-premises, hybrid, and potentially cloud environments. This role will focus on designing, implementing, and supporting microsegmentation controls using Illumio to reduce lateral movement risk and enforce least-privilege access across enterprise workloads.
NewIT Tester System OneIT TesterMerrifield, VARemoteSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. • Document and manage defects; perform root cause analysis.
NewDesktop Governance Analyst System OneDesktop Governance AnalystVienna, VA5+ years of IT experience supporting desktop infrastructure technical solutions for access governance, privileged access administration, risk remediation, audit support, compliance reporting, and control validation within end-user computing operations. Support elevated access governance activities, including recurring reviews, entitlement validation, recertifications, exception tracking, evidence collection, audit readiness, and remediation follow-up.
NewDesktop Support System OneDesktop SupportMerrifield, VASystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Experience with troubleshooting Palo Alto Network Global Protect client issues on Windows endpoints.
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.
IT QA Engineer - SDET System OneIT QA Engineer - SDETMerrifield, VAYou will play a key role in building scalable automation frameworks, improving testing processes, and integrating AI-enabled capabilities to accelerate test creation, optimize regression testing, enhance defect analysis, and improve overall quality outcomes. The engineer will build automation frameworks, execute multiple types of testing, integrate testing into continuous delivery pipelines, and collaborate with engineering, product, and design teams to improve software quality.
NewSenior .Net Application Developer (Secret clearance) System OneSenior .Net Application Developer (Secret clearance)Reston, VAExperience as a developer in a software environment that supported more than 10,000 users and a Relational Database Management System (RDBMS) with more than 250 tables and 1 million total rows. Experience with SharePoint, NHibernate, jQuery and JavaScript, AJAX, HTML and CSS, Oracle and SQL Server databases, T4 templates, and even Classic ASP, is also desired.
NewSenior Enterprise Data Privacy Analyst System OneSenior Enterprise Data Privacy AnalystMerrifield, VAThe ideal candidate has hands-on experience standing up or enhancing privacy programs in the second line of defense at highly regulated financial environments and can operate strategically while also delivering practical implementation artifacts. The contractor will support the maturation of the organization’s privacy framework, governance processes, privacy risk management capabilities, regulatory compliance obligations, third?party privacy oversight, Privacy Impact Assessment (PIA)/Privacy Risk Assessment (PRA) programs, and privacy reviews of Artificial Intelligence initiatives.
NewLead Java Cloud Engineer (AWS, EKS, APIs & API Management) System OneLead Java Cloud Engineer (AWS, EKS, APIs & API Management)Reston, VA$81.06 / hourWe are seeking a Lead Java Cloud Engineer with strong experience designing and developing enterprise-level APIs in cloud environments. The ideal candidate has a strong Java background, experience building scalable applications, and the ability to collaborate across teams on high-visibility projects.
NewIntermediate Information Systems Specialist- Hardware Services System OneIntermediate Information Systems Specialist- Hardware ServicesWashington, DC1. At least Five years of overall IT experience, including a minimum of Five years of experience providing general desktop support with previous experience opening and maintaining support cases via enterprise IT service management, e.g. 6. At least Five years’ experience in with installing, configuring, and supporting Microsoft Windows 10/11 operating systems on laptops and desktop computers in a client/server environment.
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.
NewSoftware Developer System OneSoftware DeveloperMcLean, VARemote$100,000 / hourExperience using generative AI and AI-assisted development tools to accelerate the software development lifecycle, including requirements analysis, solution design, code generation and modernization, automated testing, documentation, code review, troubleshooting, and release readiness, while applying appropriate security, privacy, governance, and human-review controls. The Software Developer will enhance and refactor legacy applications, build cloud-hosted services using modern programming languages and frameworks, and develop production-ready AI capabilities that improve information access, automate workflows, and augment user decision-making.
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.
NewLead .Net Developer (Secret clearance) System OneLead .Net Developer (Secret clearance)Reston, VAExperience as a developer in a software environment that supported more than 10,000 users and a Relational Database Management Systems (RDBMS) with more than 250 tables and 1 million total rows. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
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).