Senior 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).
Applications Developer - II Base One TechnologyApplications Developer - IIArlington, VA$90,000–$110,000 / yearContractorSupporting a U.S. Government customer to provide support for onsite incident response to civilian Government agencies and critical asset owners who experience cyber-attacks, providing immediate investigation and resolution. Contract personnel perform investigations to characterize the severity of breaches, develop mitigation plans, and assist with the restoration of services.
Senior .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.
Senior Full Stack .Net Developer (onsite) System OneSenior Full Stack .Net Developer (onsite)Washington, DCThey will build and maintain powerful web applications using our modern tech stack: NET Core C#, Web API, Angular 16+, Entity Framework, and SQL Server. They will work collaboratively with other developers, QA engineers, and business analysts in our fast-paced Agile environment to deliver software solutions.
NewSoftware Developer System OneSoftware DeveloperWashington, DC$140,000–$180,000 / yearThis role will work as part of the Sales Engineering team and engage directly with customers on-site, in a hybrid format, or remotely, as required by each customer, including the potential for occasional short-term travel to customer locations across the United States. Successful Software Developer's demonstrate competency in integrating advanced technologies into existing business processes, building new functionality, ensuring successful software deployments, and working closely with customers.
NewSr. Software Developer System OneSr. Software DeveloperGaithersburg, MDThe Senior Software Engineer will work closely with product owners, architects, Scrum Masters, DevSecOps teams, and fellow developers to deliver secure, scalable, and maintainable software solutions. • Bachelor’s degree in Computer Science, Software Engineering, or a related field with 8 to 12 years of relevant experience, or a master’s degree with 6 to 10 years of relevant experience.
Sr. ServiceNow Developer - CSM System OneSr. ServiceNow Developer - CSMReston, VA$83.33 / hourThis role focuses on building and improving customer-facing solutions, Service Portals, integrations, and custom workflows within a complex ServiceNow environment serving large-scale user communities. We are seeking a Senior ServiceNow Developer with strong experience in Customer Service Management (CSM) to support the development and enhancement of enterprise ServiceNow applications.
ServiceNow Developer PlanIT GroupServiceNow DeveloperWashington, DCServiceNow Application Development experience in two or more of the following areas: • Hands-on experience configuring and developing in ServiceNow, including form and field creation/updates (backend and/or Studio), Client Scripts, Business Rules, Catalog Items and scripting, group and role administration, flows (Flow Designer), notifications, email configuration, and scheduled jobs. ServiceNow Developer (Remote): Description: • ServiceNow Software Developer with minimum 4 years development experience in ServiceNow, • required CSA Admin certification, • strong oral and written communication skills and ability to leverage AI in their daily work.
Software Developer PlanIT GroupSoftware DeveloperWashington, DCA degree from an accredited College/University in Software Engineering, Computer Science, or related discipline is preferred; • Able to perform all functional duties independently; • Experience training/mentoring less experienced personnel; • Experience authoring or contributing to software-related documentation such as requirements specifications, design documents, technical manuals, and user manuals. • Cloud Platforms: Experience with GCP services (Compute Engine, Cloud Functions, BigQuery, etc.).
Developer – Mid-Level NuAxis InnovationsDeveloper – Mid-LevelWashington DC, DCImplements features, integrations, and fixes under the direction of the senior developer, with growing ownership of components and a clear expectation of accessible, secure, well-tested code. • Working experience with automated testing in JavaScript/TypeScript using Cypress, Playwright, Selenium, or equivalent is preferred; willingness to contribute automation is required.
UI/UX Developer NuAxis InnovationsUI/UX DeveloperWashington DC, DCDesign for bilingual English/Spanish content, complex public forms, real-time validation, clear error recovery, and low-literacy/limited-English-proficiency users. • Validate designs across current and previous major browsers, desktop/tablet/mobile form factors, keyboard-only interaction, screen readers, and responsive breakpoints.
GIS Map Developer - Level III PlanIT GroupGIS Map Developer - Level IIIArlington, VAList of tasks to be performed: • Work with GIS (Geographic Information Systems) software and platforms, along with programming languages and tools for web mapping and spatial data management. o Application Programming Interfaces (APIs) like ESRI Map APIs, Leaflet, and OpenLayers to integrate mapping and geospatial functionalities into web applications.
Senior Ab Initio Developer CredenceSenior Ab Initio DeveloperMcLean, VA$130,000–$160,000 / yearExperience building integrations across APIs, legacy systems, and heterogeneous data sources, with the ability to troubleshoot performance issues and optimize large-scale ETL workflows. This role is well suited to someone who enjoys working across complex data environments, partnering with technical and business stakeholders, and contributing to solutions where reliability, performance, and quality matter.
Mobile 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.
UI/UX Developer System OneUI/UX DeveloperMcLean, VARemoteA critical competency for this role is the ability to leverage agentic AI development tools (such as Claude Code, Antigravity, Kiro, or similar platforms) to accelerate coding workflows, debug complex issues, and streamline the software development lifecycle. Partner with cross-functional teams to integrate AI capabilities, including chatbots, Retrieval-Augmented Generation (RAG) interfaces, intelligent search, and conversational experiences.
Mid Backend Java Developer System OneMid Backend Java DeveloperMerrifield, VAYou'll work alongside Engineering, Architecture, Security, and Products teams to identify technical opportunities, reduce technical debt, and ensure we're making sound technical decisions today that won't become tomorrow's problems. This isn't a traditional software engineering role; it's an opportunity to influence the technical direction of our Digital Banking platform by helping engineering teams build solutions that are scalable, secure, resilient, and built to last.
ServiceNow Developer Dev Technology GroupServiceNow DeveloperWashington, DC$90,000–$140,000 / yearServe as a ServiceNow developer on a cross-functional development team; Design and develop custom scoped applications on the Now Platform to meet business requirements, including implementation of ACLs, client scripts, UI Builder, business rules, workflows, and custom Service Portal widgets, including advanced scripting of each. As a Washington Post Top Workplace award winner for the past THIRTEEN years in a row, the Top Workplaces USA for the past five years, and a recipient of the Companies As Responsive Employers (CARE) Award for the past six years, Dev Technology employees enjoy: Generous and flexible time-off policy.
Lead .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.
Senior ServiceNow Developer Capgemini Government Solutions LLCSenior ServiceNow DeveloperMcLean, VAHowever, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. The disclosed range takes into account the wide range of factors that are considered in making compensation decisions including, but not limited to, geographic location, relevant education, qualifications, certifications, experience, skills, seniority, performance, sales or revenue-based metrics, and business or organizational needs.
NewFullstack Developer System OneFullstack DeveloperNew Carrollton, MD$87,000 / hourPrevious experience supporting IRS or other federal technology programs System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. • Strong written and verbal communication skills, including the ability to work with client stakeholders across technical and organizational levels Preferred Qualifications.