JSON jobs in Arlington, VA

Ashburn, Virginia

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Today

Residency All applicants must reside in the United States at the time of application. Overview BigBear.ai is seeking a Java/JEE Developer (Mid-Level) to join our team to begin an exciting and challenging career in Ashburn, VA. What you will do Design, implement, and unit test REST microservices with Java, Spring, and JUnitDevelop web applications with Angular that communicate with backend microservicesWrite complex SQL queries and perform data modelingWork collaboratively within a large, Agil

Sponsored

Full-time

Data Modeler

McLean, Virginia

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2d ago

Job Title: Data Modeler Location: McLean, VA On-site Duration: 6+ Months Job Description Core, hands-on experience in enterprise data modeling with data modeling serving as the candidate's primary responsibility and not simply exposure as part of a Data Engineering role.Recent hands-on experience with MongoDB, including designing or working with document-based data models.Strong mortgage domain experience with recent and consistent involvement in mortgage-related projects. Experience supporting

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Contract, Third Party

$50 - $60

Sr Data Modeler

McLean, Virginia

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2d ago

Must-Have Skills 10+ years of enterprise Data Modeling experience (primary role)MongoDB document data modeling (recent hands-on)Mortgage domain experience (Freddie Mac/Fannie Mae preferred)Strong SQL and SnowflakeJSON and semi-structured data modelingETL, Data Integration, and Enterprise Data ArchitectureStrong stakeholder communication and leadership skills

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Contract

$60+

Sr Data Modeler

McLean, Virginia

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5d ago

URGENT REQUIREMENT Sr. Data Modeler Location: McLean, VA Type: 12+ Contract (Onsite Position) Candidates who are already local to the McLean, VA area are strongly preferred. Responsibilities: Core, hands-on experience in enterprise data modeling with data modeling serving as the candidate's primary responsibility and not simply exposure as part of a Data Engineering role.Recent hands-on experience with MongoDB, including designing or working with document-based data models.Strong mortgage domai

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Third Party, Contract

Depends on Experience

Developer-Full Stack Specialist with Agentic AI

McLean, Virginia

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30+d ago

Job Title: Developer-Full Stack Specialist with Agentic AI Location: McLean, VA Must Have Qualifications: Must have 5+ years of experience and a strong AI development background. Must have hands on experience building agentic workflows, automating testing using AI, and working with tools such as GitHub, Copilot, and Claude. Required Technical Skills (must-have) GenAI / LLM + agentic development Hands-on experience building LLM-powered agents (tool-using, multi-step reasoning, guardrails). Experi

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Contract

Depends on Experience

Jr.Java Developer

Hybrid in Greenbelt, Maryland

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2d ago

Position OverviewNote : Need Only USCNASA SEWP is seeking a mid-level Java Software Developer to build and maintain internal and external Java web-based applications. The successful candidate will become an integral part of our IT solutions team of developers, database and systems administrators in support the NASA SEWP Program Management Office, a multi-award government acquisition contract focused on commercial IT products and product based services.Core ResponsibilitiesDevelop and implement n

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Full-time

Depends on Experience

Software Developer (Full Stack Developer)

Chantilly, Virginia

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Today

Analyzing client/business requirements and designing appropriate cloud-based systems and architectures // Developing, testing, and debugging cloud-native applications using programming languages like Python, Java, REACT, JNode and JavaScript // Developing, testing, and debugging cloud serverless functions // Developing, testing, and debugging web-based UI pages to ingest data and generate JSON, CSV, and TXT files

Full-time

Senior Informatica ETL Developer - W2 Only-McLean,VA-Onsite

McLean, Virginia

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3d ago

Informatica power center with CAI Responsibilities : Work with internal SMEs to understand overall data architecture in scope for project deliverables. Understand all existing integration points within the AWS ecosystem, in scope for project deliverables e.g. Step functions, Dynamo DB, Glue. Work with internal support teams Analyze existing ETL process written using Talend and PySpark. Develop in scope transformations using Pyspark and IICS. Perform Unit testing and assist code promotion to

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Contract

Depends on Experience

Senior REACT JS Developer

Washington, District of Columbia

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12d ago

Role :OCTO - Senior REACT JS DeveloperLast date for submission: 08/16/2026Location:OCTO - 200 I Street, SE Washington DC 20003Exp : 15+Need local to DC, MD, VA onlyDescription:The role will require you to design, develop and test using React JS technologies which will facilitate application development and implementation from development to QA to production. You will work to gain an understanding of the current system infrastructure, security needs, network considerations, methodologies.In this

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Third Party, Contract

Depends on Experience

Data Scientist - Senior Job#822

Springfield, Virginia

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Today

Data Scientist - Senior Location: Springfield, VA TS/SCI REQUIRED Current CI polygraph is required immediately after starting (or already within scope) Position Responsibilities: Experience working with AI/ML technologies and data systemsExperience working with multiple file types including geospatial file formats, JSON, XML, etc.3+ years of experience doing quantitative analysis, developing visualizations, and processing complex data to create data-driven insightsDevelopment experience in P

Full-time

PHP Developer

Rockville, Maryland

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Today

Axiom Consultants, Inc, is seeking a skilled PHP Developer to provide support to the NOAA Fisheries Greater Atlantic Regional Fisheries Office (GARFO). Responsibilities: Develop, maintain, and enhance web-based applications using PHP 7 and modern frameworks such as CodeIgniter 4.Write, optimize, and troubleshoot SQL scripts and queries for Oracle and PostgreSQL databases.Collaborate with cross-functional teams to understand project requirements and implement user-friendly, secure, and scalable

Full-time

USD 95,000.00 - 105,000.00 per year

Drupal Developer with AI/GenAI Experience

Washington, District of Columbia

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4d ago

Position: Drupal Developer with AI/GenAI Experience Location: Washington, DC Fully Onsite Background Check: Mandatory (Candidate must have been in the U.S. for at least 3 years) Interview Process: Requires strong technical expertise Only location candidates can apply. Requirements 8+ years of Drupal development experience, preferably with Drupal 9/10/11. Strong hands-on experience with PHP, Symfony, Drupal APIs, custom module development, Composer, and Drush. Strong experience with REST AP

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Full-time, Third Party, Contract

Data Modeler

McLean, Virginia

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Today

Senior Data Modeler They should have exposure to mongodb and mortgage experience The Role We are seeking a Senior Data Modeler to design, develop, and optimize data models that support complex financial systems. You will work closely with cross-functional teams to translate business requirements into robust data structures, enabling high-quality analytics and data-driven decision-making. This role requires strong expertise in SQL, Snowflake, and modern data modeling techniques, alongside domain

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Contract

Application Developer Sr.

Washington, District of Columbia

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Today

Job Type: Full- Time Workplace Type: Hybrid Clearance: TS/SCI With CI Poly Job Summary Castalia Systems is seeking a Sr. Application Developer, to support our client. The ideal candidate will be able to apply comprehensive knowledge across key tasks and high impact assignments. Plan and lead major technology assignments. Roles and Responsibilities A qualified candidate will perform the following duties and responsibilities, but are not limited to: Evaluates performance results and recommends ma

Full-time

USD 190,000.00 - 200,000.00 per year

API LIFE CYCLE AUTOMATION DEVELOPER

Remote or Washington, District of Columbia

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Today

ROLE: SME API Lifecycle Automation Developer REQUIRED: Position Summary Develop automated API onboarding, lifecycle management, deployment automation, and developer self-service capabilities. Required Experience API lifecycle managementAPI onboardingDeveloper PortalsAutomationREST API developmentInfrastructure-as-CodeCI/CD integrationGit-based developmentPreferred Skills JenkinsGitHub ActionsGitLabTerraformAnsibleKubernetesOpenShiftYAMLJSONPythonJavaDesired Experience API publishingAPI governa

Full-time

Data Modeler-Onsite @ Mclean, VA-Need Locals Only

McLean, Virginia

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2d ago

Title Data Modeler Location-Onsite @ Mclean, VA-Need Locals Only Duration Contract The Role We are seeking a Data Modeler to design, develop, and optimize data models that support complex financial systems. You will work closely with cross-functional teams to translate business requirements into robust data structures, enabling high-quality analytics and data-driven decision-making. This role requires strong expertise in SQL, Snowflake, and modern data modeling techniques, alongside domain kno

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Contract

Depends on Experience

Senior Application Developer

Hybrid in Washington, District of Columbia

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Today

Job Number: R0246799 Application Developer, Senior The Opportunity: At a certain point, experience -based system design can start to look like clairvoyance. When you've developed so many systems that you can not only orchestrate the best solution for any technology-based challenge, but you can also anticipate and preempt future issues, you're a solutions architect. You've evolved your skills into strategy through a long path of sof tware development accomplishments and the curiosity to understa

Full-time

USD 86,800.00 - 198,000.00 per year

Front End Application Developer

Suitland-Silver Hill, Maryland

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Today

Front End Application Developer Location: Suitland, MD Clearance: Active TS/SCI Leidos is hiring a Front End Application Developer to support the Office of Naval Intelligence (ONI) onsite at the National Maritime Intelligence Center in Suitland, MD. In this role, you'll be supporting the ONI Technology and Innovation Directorate, Information Management Division mission areas including the architecture for ONI's tradecraft, production and dissemination environment. You will provide support to h

Full-time

USD 73,450.00 - 132,775.00 per year

Senior Power Platform Developer - DOI

Washington, District of Columbia

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2d ago

Company DescriptionTechSurSolutions is a digital services company whose mission is to enable digital transformation for our customers to improve quality and efficiency.Based in the DC metropolitan area,TechSurspecializes in advanced cloud services, modernization for both ITstructuresand applications, leveraging Agile development, and Data Analytics.Since we were formed inAugust of2016,we have supported multiple impactful and excitinggovernment programs. Job DescriptionKey Responsibilities Desig

Full-time

Depends on Experience

Data Visualization Developer

Hybrid in Washington, District of Columbia

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12d ago

Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; Public Trust clearance is required. Compensation and Benefits Salary Range: $120,000 - $150,000 (Compensation is determined by various factors, including but not limited to location, work experience, skills, education, certifications, seniority, and business needs. This range may be modified in the future.) Benefits: Gridiron offers a co

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Contract

65 - 70

Front-End Software Engineer 3

Bethesda, Maryland

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Today

Requisition ID: 3871Standard Title: Software EngineerRequired Security Clearance: Top SecretLocation: Bethesda, MDWork Type: On-SiteShift: FirstReferral Eligibility: EligibleU.S. Citizenship Required? Yes Position Summary Support the DOMEX Technology Platform as a Front-End Software Engineer 3 developing high-quality web applications for a DoD program using a modern technology stack. Most tasks are conducted on-site at the client location in Bethesda, MD. The source body also states that occasi

Full-time

JSON jobs in Arlington, VA 22203, USA