Senior Ontology Developer (TS/SCI) Vantor ServicesSenior Ontology Developer (TS/SCI)Herndon, VirginiaWorking within an Agile DevSecOps environment, the Senior Developer collaborates with ontology engineers, software engineers, database engineers, data engineers, and Government stakeholders to deliver high-quality software that supports operational mission requirements. This position develops application services, APIs, user interfaces, and backend components that leverage enterprise ontologies, knowledge graphs, and Semantic Web technologies to support data interoperability and mission workflows.
Senior Ontology Developer (TS/SCI) MaxaarSenior Ontology Developer (TS/SCI)Herndon, Virginia$187,000–$205,700 / yearWorking within an Agile DevSecOps environment, the Senior Developer collaborates with ontology engineers, software engineers, database engineers, data engineers, and Government stakeholders to deliver high-quality software that supports operational mission requirements. This position develops application services, APIs, user interfaces, and backend components that leverage enterprise ontologies, knowledge graphs, and Semantic Web technologies to support data interoperability and mission workflows.
Senior Developer and Network Analyst Tokio Marine HCCSenior Developer and Network AnalystFrederick, Maryland$87,400–$131,000 / yearSolid written and verbal communication skills with an emphasis on confidentiality, tact, diplomacy, and professionalism to communicate effectively with employees, adjusters, agencies, agents, the State Departments of Insurance, and the general public. Problem Resolution – Awareness of the need for problem resolution, the ability to identify and gather the critical resources needed to make a decision, and the facilitation skills to bring the group to an overall consensus.
Sr. Software/Web Developer (AOA-SWD-000) KentroSr. Software/Web Developer (AOA-SWD-000)Springfield, Virginia$160,000–$170,000 / yearFull timeUse COTSopen source, freeware (Python, JavaScript, AngularJS, JavaScript frameworks, Django, Model Glue, etc.), HTML, CSS, SQL, database (MySQL, etc.), and SharePoint to support systems and associated applications located in test and operational environments in support of line of business functions: Assess the functionality and data storage capability. Support production teams made up of analysts, data stewards, geospatial and imagery analysts, database engineers, data scientists, multimedia specialists, graphic designers, 3d designers, and editors to develop modern web conveyance products for special intelligence topics.
Data Engineer / Python & SQL Developer Graham Technologies LLCData Engineer / Python & SQL DeveloperWashington, DCRemoteThis role requires advanced expertise in Python and SQL, with demonstrated experience developing scalable data pipelines, cloud-based integrations, and backend data processing solutions using AWS services. At Graham Technologies, we''ve built a family-oriented environment where team members are encouraged to maintain a healthy work-life balance, pursue their passions, and grow professionally through flexible schedules, continued education, and a strong sense of community.
Ontology Software Developer (TS/SCI) VantorOntology Software Developer (TS/SCI)Herndon, VirginiaWorking within an Agile DevSecOps environment, the Software Engineer collaborates with ontology engineers, database engineers, data scientists, and Government stakeholders to deliver secure, high-performance applications that leverage Semantic Web technologies and AI/ML capabilities. This position develops scalable applications, APIs, and microservices that integrate ontology-driven data models, knowledge graphs, and enterprise data sources to support Object-Based Intelligence workflows.
Palantir Developer / Data & Application Engineer Geo OwlPalantir Developer / Data & Application EngineerSpringfield, VAGeo Owl is seeking a Palantir Developer / Data & Application Engineer to design, develop, and support data-driven applications, workflows, pipelines, and analytics solutions using Palantir Foundry and AIP . Geo Owl is a premier provider of geospatial intelligence services, delivering cutting-edge solutions to the Department of Defense, intelligence agencies, and enterprises around the globe.
Ontology Software Developer (TS/SCI) Vantor ServicesOntology Software Developer (TS/SCI)Herndon, Virginia$220,000–$242,000 / yearWorking within an Agile DevSecOps environment, the Software Engineer collaborates with ontology engineers, database engineers, data scientists, and Government stakeholders to deliver secure, high-performance applications that leverage Semantic Web technologies and AI/ML capabilities. This position develops scalable applications, APIs, and microservices that integrate ontology-driven data models, knowledge graphs, and enterprise data sources to support Object-Based Intelligence workflows.
Ontology Software Developer (TS/SCI) MaxaarOntology Software Developer (TS/SCI)Herndon, Virginia$220,000–$242,000 / yearWorking within an Agile DevSecOps environment, the Software Engineer collaborates with ontology engineers, database engineers, data scientists, and Government stakeholders to deliver secure, high-performance applications that leverage Semantic Web technologies and AI/ML capabilities. This position develops scalable applications, APIs, and microservices that integrate ontology-driven data models, knowledge graphs, and enterprise data sources to support Object-Based Intelligence workflows.
Full Stack Software Developer ArdentFull Stack Software DeveloperWashington, D.C. MetroThe Developer shall provide development expertise across the full application stack, including Python-based backend APIs (FastAPI), ReactJS-based front-end interfaces, PostgreSQL databases, and containerized deployments targeting AWS cloud infrastructure. • Support deployment of containerized workloads to AWS environments (e.g., ECS, EKS, or equivalent managed services), working within existing cloud infrastructure patterns established by CBO's infrastructure team.
NewSenior SQL Server & .NET API Developer (Azure) GuidehouseSenior SQL Server & .NET API Developer (Azure)Tysons Corner, VirginiaThe successful candidate will have deep experience designing and supporting SQL-based solutions, implementing secure data access patterns, and developing API integrations within Azure-hosted environments. NET Web APIs serve primarily as a secure integration layer between SQL Server, Azure-hosted services, Microsoft Power Platform solutions, and consuming applications.
NewSenior Informatica Developer KBRSenior Informatica DeveloperChantilly, VAThis role offers a rare opportunity to join the organization during a pivotal period of growth and transformation, helping build and support enterprise data integration, analytics, and business intelligence capabilities that will position the company for long-term success while serving critical government and commercial missions around the world. This role partners closely with business stakeholders, analysts, architects, and application teams to deliver reliable data pipelines, optimize data processing workflows, and support reporting and analytics initiatives.
Technical Security Support Specialist - DARPA PSS Celestar CorpTechnical Security Support Specialist - DARPA PSSArlington, VA$145,000–$200,000 / yearResponsibilities: Provide database management and administration support for SAPCO security databases, including JADE, Document Control, DFASTs, Archive/Inventory Management System, and related systems. Required Qualifications and Skills (Must Be Reflected on Your Resume): A Bachelor's degree with 10 years of related DoD SAP or IC technical security support experience -OR- an Associate's degree with 12 years of related DoD or IC technical security support experience.
Web Developer T-Rex Solutions LLCWeb DeveloperFort Meade, MD$180,000–$230,000 / yearT-Rex offers both IT and professional services to numerous Federal agencies and is a leader in providing high quality and innovative solutions in the areas of Cloud and Infrastructure Services, Cyber Security, and Big Data Engineering. Established in 1999, T-Rex Solutions, LLC is a proven mid-tier business providing data-centric mission services to the Federal government as it increasingly tries to secure and leverage the power of data.
Low Code Developer/Business Analyst JEFFERSON CONSULTING GROUP, LLCLow Code Developer/Business AnalystWashington, DCRemoteThe Low Code Developer/Business Operations Analyst supports operational effectiveness through hands on requirements documentation, design, development, testing, and go-live for low code solutions supporting Department-level acquisition processes. This role may be responsible for designing, developing, implementing, and supporting business solutions using the Microsoft Power Platform suite, including Power Apps, Power Automate, Power BI, Power Pages, and Dataverse.
Software Developer Bridge Core (BCore)Software DeveloperChantilly, Virginia$190,000–$230,000 / 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. Responsibilities: You will be part of a team of developers that are building a new application that utilizes LLM to convert data and access policies from a variety of sources and formats into a uniform format for compliance assessment.
Software Engineer (Ai-Assisted Developer Tooling) Visionist, Inc.Software Engineer (Ai-Assisted Developer Tooling)Laurel, MD$170,000–$240,000 / yearWe embed small engineering teams with analysts to rapidly identify and solve mission capability gaps playing a critical role in defending our nation's cyber infrastructure & providing expertise in malware analysis, attribution, mapping adversarial infrastructure, pen testing, and operational planning. This premier program encompasses traditional software services including Systems Design and Engineering, Database Administration, Data Science and Knowledge Management, Enterprise Risk Management, Integration and Test, as well as Operations and Systems Support.
Software Engineer (AI-Assisted Developer Tooling) Visionist IncSoftware Engineer (AI-Assisted Developer Tooling)Laurel, MD$170,000–$240,000 / yearWe embed small engineering teams with analysts to rapidly identify and solve mission capability gaps playing a critical role in defending our nation's cyber infrastructure & providing expertise in malware analysis, attribution, mapping adversarial infrastructure, pen testing, and operational planning. This premier program encompasses traditional software services including Systems Design and Engineering, Database Administration, Data Science and Knowledge Management, Enterprise Risk Management, Integration and Test, as well as Operations and Systems Support.
Lead Developer, Senior Nationwide IT ServicesLead Developer, SeniorWashington, DC, DCFull timeThe Senior Lead Developer will collaborate closely with the Program Manager, Technical Lead / Solution Architect, Government stakeholders, cybersecurity personnel, business analysts, and DevSecOps engineers to support application modernization, cloud migration, operations and maintenance, and the development of new enterprise capabilities. Through mediation, arbitration, conflict prevention, and collaborative training programs, FMCS helps improve communication and cooperative problem-solving while administering labor relations programs under federal law to support stable, productive workplaces nationwide.
Senior Systems Analyst Apogee Global RMSSenior Systems AnalystBaltimore, MarylandBuild advanced SQL queries, data extracts, dashboards, and analytical reports using PostgreSQL and other database platforms. Conduct Medicaid 8001 Flat File validation, MPI/MDM matching analysis, HBX system error analysis, and 1095-A/1095-B validation activities.