551 Results for

Contract Developer Jobs in Herndon, VA

Jobs

New!

Washington, DC1 day ago

$120,000–$140,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. At least five years of full-stack web development experience using ASP.Net, C#, SQL Server, HTML, JavaScript and CSS with a strong understanding of Bootstrap's components, grids and responsive design.

New!

Washington, DC1 day ago

$115,000–$145,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. We are seeking a highly skilled, experienced, and passionate Senior Application Developer with expertise in .NET, Angular, and TypeScript to join our dynamic Tech Services team.

New!

Washington, DC1 day ago

$95,000–$125,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Our development strategy is agile and policy-driven, allowing us to identify attractive markets and rapidly advance projects that deliver both economic and environmental value to local communities.

New!

Washington, DC1 day ago

Effective verbal and written communication skills, especially for collaborating on mainframe integration with Java developers and migration planning. • Expereience with test automation in unit tests, functional tests, regression tests and performance tests.

Leesburg, VA10 days ago

$70–$90 Per Hour

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. Configure and customize ServiceNow including UI policies, business rules, client scripts, flows, catalog items, and update sets.

New!

Washington, DC1 day ago

ServiceNow 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.

New!

Gaithersburg, MD2 days ago

$87,100–$157,450

If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native and AI-enabled capabilities.

New!

Bethesda, MD2 days ago

$69,550–$125,725

February 9, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. You’ll be at the cutting edge, working with state-of-the-art tech to shape naval training systems like CIAT - Combined Integrated Air and Missile Defense (IAMD) and Anti-Submarine Warfare (ASW) Trainer.

Vienna, VA10 days ago

$54.88–$78.40 Per Hour

The ideal candidate will work collaboratively in a team environment, focusing on problem-solving and quality product creation, using modern development tools and methodologies. Java | AI-powered development tools | Web Applications | Source Control | Databases | Micro Service Architectures | Cloud Applications.

New!

Arlington, VA2 days ago

$107,900–$195,050

Work independently to ensure the reliability, availability, and security of the ENET solution in multiple environments by proactively monitoring the system, troubleshooting, and resolving issues to ensure high availability and continuity of operations. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

Washington, DC11 days ago

$140,000–$180,000 Per Year

This 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.

New!

Reston, VA2 days ago

$107,900–$195,050

This role combines hands-on development with technical leadership, focusing on architecting and implementing scalable Salesforce solutions integrated with Amazon Connect, AI-driven capabilities, and third-party government systems. Required Education & Experience: Bachelor’s degree in IT or related field and a minimum of 8 years of relevant experience or or Masters with a minimum 6 of relevant experience, progressive experience in Salesforce development and architecture, including Federal program experience.

New!

Tysons, VA1 day ago

$140,000–$215,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.

New!

Washington, DC1 day ago

Leads a group of engineers, analysts, and/or technicians assigned for the duration of a project or may function as ongoing lead within a group of engineers associated with one or more technical areas within the telecom function (such as, but not limited to, network design, engineering, implementation, or operations/user support). • Ability to develop functional requirements specifications, data mappings, function mapping, setting of configuration tables and setting of transaction/control tables.

New!

Arlington, VA1 day ago

You will architect and implement scalable agent frameworks that integrate LLMs, APIs, external tools, and enterprise systems to automate complex workflows for datacenter operations. We are seeking a Senior Agentic AI Developer to design, build, and deploy advanced autonomous AI systems capable of multi-step reasoning, tool usage, and dynamic decision-making.

New!

Merrifield, VA5 days ago

The ideal candidate will hold a Bachelor’s or Master’s degree in Software Development (or a related field) from an accredited university and demonstrate proficiency in modern development tools and languages. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.

New!

Reston, VA1 day ago

Remote

A 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; Excellent communication skills. Expertise in Struts , Spring MVC, Git Bash, Java25, WebSphere , Tomcat, GitHub , GitHub Copilot, VersionOne , JUnit, JDBC, Maven ,ALM, UFT.

New!

Bethesda, MD2 days ago

$107,900–$195,050

If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. Leidos’ High Fidelity Simulation Business Area designs and delivers cutting-edge system-of-systems solutions that power world-class simulation, training, and analysis products for the U.S. Navy.

Washington DC, DC22 days ago

Remote

We provide engineering teams the platform capabilities, observability tooling, automated safeguards, incident management tooling, and safe feature release systems they need to deliver highly available systems, ship features with confidence, and investigate and mitigate incidents faster. OPX is focused on raising the bar for system stability, resilience, and reliability across Samsara -- building automated safeguards that protect production, ensuring engineers get the right signals at the right time, and giving teams the visibility they need to stay in control of their services.

New!

Gaithersburg, MD2 days ago

$131,300–$237,350

If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. April 1, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

New!

Columbia, MD4 days ago

$150,000–$220,000

We are seeking a Full-Time Software Developer to support product enhancement and system integration efforts within classified environments supporting federal missions. The ideal candidate thrives in production environments and is comfortable debugging live systems.

Washington, DC14 days ago

Job Duties and Responsibilities: - Responsible for solving business problems, business architecture, process optimization, business rules, business cases, business requirements, organizational change (communications), and UAT. A thorough understanding of the current state of the organization is necessary prior to recommending changes related to implementing a new business solution.

New!

Reston, VA5 days ago

Remote

$107,900–$195,050

Experience working in cloud environments (e.g., AWS, Azure, Google Cloud) and containerized architectures (e.g., Docker, Kubernetes)•Knowledge of multiple programming languages and ability to work across diverse tech stacks. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

New!

Gaithersburg, MD2 days ago

$87,100–$157,450

If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. April 1, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

New!

Gaithersburg, MD2 days ago

$87,100–$157,450

As a member of a Scaled Agile software development organization, you will contribute to the technical execution of a program that integrates proven, globally deployed technologies with modern cloud-native and AI-enabled capabilities. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

New!

McLean, VA1 day ago

$150,000–$220,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Lead new product initiatives building on a proven quality and reliability platform to improve developer experience across AI, API, CLI, and VPC uses, new product org!

McLean, VA13 days ago

Temporary
Contractor
Full-time

Ranked a Top Staffing Firm in the U.S. by Staffing Industry Analysts for six consecutive years, Genesis10 puts thousands of consultants and employees to work across the United States every year in contract, contract-for-hire, and permanent placement roles. The ideal candidate will analyze and convert complex SQL queries to align with new data sources, work with Snowflake for data warehousing, and support technology delivery activities for business and support teams.

McLean, VA13 days ago

$55.24–$70.47 Per Hour
Temporary
Contractor
Full-time

Ranked a Top Staffing Firm in the U.S. by Staffing Industry Analysts for six consecutive years, Genesis10 puts thousands of consultants and employees to work across the United States every year in contract, contract-for-hire, and permanent placement roles. With more than 300 active clients, Genesis10 provides access to many of the Fortune 100 firms and a variety of mid-market organizations across the full spectrum of industry verticals.

New!

Herndon, VA2 days ago

This role will serve as the primary liaison between Real Estate, Design Engineering, Due Diligence, and other critical partner teams from initial planning, through design development to provide schedule forecasting, construction budgeting, and constructability guidance. - Experience understanding electrical and mechanical systems involved in critical data center operations including systems such as feeders, transformers, generators, switch gear, UPS systems, ATS units, PDU units, chillers, pumps, or air handling units.

New!

Arlington, VA1 day ago

$120,000–$150,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. If you have a solid grounding in software engineering, continuous delivery, and computer science, and are looking for a career opportunity to grow and leverage those skills to the fullest while working on cutting edge technologies – Here is the place to be!

Vienna, VA11 days ago

$55.37–$78.26 Per Hour

The ideal candidate will engage in troubleshooting, test case execution, and automation framework maintenance using generic technologies. Execute test cases for complex applications referencing database back-end systems.

Washington, DC7 days ago

$80–$80 Per Hour

Analyze test results to verify functionality, recommend corrections, and maintain detailed documentation for debugging and software updates. Create and run software tests to identify issues and determine root causes, ensuring system modifications are prepared for implementation.

Merrifield, VA11 days ago

Experience with Test processes, open-source test frameworks, test design strategies, writing test cases, and automating tests in Java with frameworks like JUnit/TestNG, Selenium, JMeter and Appium. Set up, maintain, and perform test automation frameworks on multiple application platforms, such as Mobile, Desktop, and Web, and building test scenarios and acceptance tests.

Arlington, VA22 days ago

$60–$64 Per Hour
Temporary
Contractor
Full-time

While an hourly range is posted for this position, an eventual hourly rate is determined by a comprehensive salary analysis which considers multiple factors including but not limited to: job-related knowledge, skills and qualifications, education and experience as compared to others in the organization doing substantially similar work, if applicable, and market and business considerations. • Experienced in designing, implementing, and analyzing simulations involving extensive datasets, ensuring efficient data processing and accurate modeling outcomes.

Washington, DC20 days ago

Full-time
Employee

Overview We are looking for a Senior Backend Engineer to support federal software engineering efforts, primarily focused on operations and maintenance of Data.gov applications. The ideal candidate has strong Python and Flask experience, and is comfortable working in a dockerized development environment.

Washington, DC30+ days ago

This role focuses on designing and building Power BI reports and dashboards, working comfortably within the Azure ecosystem, and querying and analyzing data primarily using Snowflake SQL to extract insights and support decision-making. Note: Due to the confidential nature of our federal government Clients, this role requires the ability to pass a United States federal government Public Trust background check and is exclusively open to U.S. Citizens located within the United States.

Washington, DC30+ days ago

This role ensures the platform is stable, secure, and optimized for daily operations, including case management, reporting, workflow automation, and integrations. We are seeking a Salesforce Lead Developer to support a government‑contracted contact center by leading the design, development, and maintenance of Salesforce solutions.

Fort Belvoir, VA30+ days ago

Full-time

The Senior Software Developer supports the design, development, and delivery of data analysis tools, collaboration systems, and visualizations that address real‑world operational needs and capability gaps for government customers. Applied Research Associates, Inc. is an employee-owned international research and engineering company recognized for providing technically superior solutions to complex and challenging problems in the physical sciences.

Rockville, Maryland15 days ago

$70–$80 Per Hour

Hands-On Design & Development: Collaborate with technical leads and work closely with other developers to design and implement migration patterns, reusable components, and reference code that support teams transitioning legacy Java/J2EE applications to AWS. AWS Service Integration: Select and integrate AWS services based on application needs, such as EC2/ECS/EKS for compute, S3 for storage, RDS for databases, API Gateway for APIs, and Lambda for event-driven processing.

Sterling, VA30+ days ago

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. To attract and retain the highest quality staff, Northstrat provides a unique and versatile benefits package, the Individual Benefit Account (IBA), which places the power of choice in the hands of our greatest asset – the employee.

Washington, DC30+ days ago

Contractor

In doing so, AMS supports business processes to include, but not limited to, tracking the lifecycle of accountable and non-accountable assets; managing asset receipt, creating tracking, maintenance, disposal, and valuation processes; providing greater visibility into asset history; automating commonly used forms and requests for service; and embedding workflow and email notifications into everyday asset management processes and preventative maintenance tracking. Microsoft Excel Microsoft Word Excellent verbal and written communication skills Nice to have skills: 2+ years experience with java class extension in IBM Maximo 7 or later 2+ years experience with creating and editing xml files 2+ years experience with Mobile App Development for Android and/or iOS Experience working with agile implementation teams Experience with federal government contract work, preferably DOJ agencies

Washington, DC30+ days ago

Remote

Full-time

Programming Languages Assembly (Primary language) C C++ Integration Technologies Experience working with enterprise integrations such as: DB2 databases REST or enterprise APIs IBM MQ messaging File-based integrations SFTP data transfers Developmental Responsibilities Legacy system enhancements. Role: Senior Developer – Mainframe / Assembler (z/OS, TPF) Location: Remote or NEC Region Job Type: Long Term Contract Job Summary: Client is seeking a Senior Developer with deep experience in IBM z/OS mainframe environments, specifically working with Assembly language and C/C++.

Herndon, Virginia30+ days ago

$80,000–$128,000 Per Year

Peraton Overview: Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. Responsibilities: We are seeking a highly skilled and innovative Software Developer, Journeyman to join our team in the greater DMV area, supporting the Army National Guard.

Falls Church, VA30+ days ago

Contractor

About CORTEK: Founded in 2003, CORTEK is a distinguished Service-Disabled Veteran-Owned Small Business (SDVOSB) specializing in Chemical, Biological, Radiological, and Nuclear (CBRN) defense, Weapons of Mass Destruction (WMD) terrorism prevention, Counter-WMD (CWMD) support services, and Freedom of Information Act (FOIA)/Privacy Act support. Our proven track record includes 12 years of incumbency on DOS contracts supporting WMD threat mitigation and consequence management programs, as well as comprehensive support for the Defense Threat Reduction Agency's (DTRA) technical and strategic objectives across Physical and Biological Sciences, Engineering, Policy, and Operations.

Reston, Virginia30+ days ago

$146,200–$228,400 Per Year

Compensation at Noblis is determined by various factors, including but not limited to, the combination of education, certifications, knowledge, skills, competencies, and experience, internal and external equity, location, clearance level, as well as contract-specific affordability, organizational requirements and applicable employment laws. We believe our people are our greatest strength, and we consistently seek exceptionally skilled, mission‑driven professionals who care deeply about doing work that enriches lives and makes our nation safer.

Rockville, MD18 days ago

$85–$92 Per Hour

Bring a passion to stay on top of tech trends, experiment with and learn new technologies, participate in internal & external technology communities, and mentor other members of the engineering community. Encourage innovation, implementation of cutting-edge technologies, inclusion, outside-of-the-box thinking, teamwork, self-organization, and diversity.

Herndon, Virginia30+ days ago

$104,000–$166,000 Per Year

Implement APIs, automation logic, data workflows, and user interfaces; develop dashboards and analytics features (e.g., Power BI) and automate processes (e.g., Power Automate) to improve operational visibility. Peraton Overview: Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy.

Herndon, Virginia30+ days ago

$135,000–$216,000 Per Year

Peraton offers enhanced benefits to employees working on this critical National Security program, which include heavily subsidized employee benefits coverage for you and your dependents, 25 days of PTO accrued annually up to a generous PTO cap and eligible to participate in an attractive bonus plan. The EMMETT program, a next gen Space Domain Awareness (SDA) Indications and Warning (I&W) system, establishes a repository of resident space objects (RSOs), finds RSOs of interest, and provides data to ground operators.

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Contract Developer Jobs in Herndon, VA

Jobs

Senior Application Developer (.NET/Angular)Jobot

Senior Application Developer (.NET/Angular/TypeScript)Jobot

Senior Associate Project Developer (Solar & BESS)Jobot

Software Developer / Application SupportPlanIT Group

ServiceNow Developer SeniorSystem One

ServiceNow DeveloperPlanIT Group

Lead AI Software DeveloperLeidos

Software DeveloperLeidos

Java DeveloperMitchell Martin

Application DeveloperLeidos

Software DeveloperSystem One

Salesforce Senior DeveloperLeidos

Senior Backend EngineerJobot

Senior SAP DeveloperPlanIT Group

Senior Agentic AI DeveloperPlanIT Group

Software Developer (C++/C#/ASP.Net)System One

Software DeveloperPlanIT Group

Senior Software DeveloperLeidos

Senior Software Engineer II, Developer Experience, Operational ExcellenceSamsara

Principal Software DeveloperLeidos

Software Developer - Active TS/SCI with Full Scope PolygraphGables Search Group

Oracle ERP FS - Procure to Pay PA - Hybrid - Long term contract - Washington, DC - B3648BTechnovision Inc

Senior Software Engineer – Developer Experience & Code QualityLeidos

Lead Software DeveloperLeidos

Lead DevSecOps Software DeveloperLeidos

Senior Product ManagerJobot

Backend Python DeveloperGenesis10

Developer-UX User Interface ProfessionalGenesis10

Sr. Pre-Construction Manager, AMER DCCD Pre-ConstructionAmazon Data Services, Inc.

Software EngineerJobot

Sr SDET ConsultantMitchell Martin

Sr Healthcare Software Tester / QA AnalystSystem One

Software Development Engineer (SDET)System One

Software DeveloperThe Computer Merchant, LTD.

Senior Python DeveloperADG TECH CONSULTING, LLC

Contract Power BI DeveloperData Society

Salesforce Lead Developer (Contact Center - Federal Contract)Systems Integration, Inc.

Senior Software DeveloperApplied Research Associates, Inc

Senior Software Developer (Java/J2EE/Application Modernization)CTIS, Inc.

Senior Software DeveloperNorthstrat

Sr Maximo Java Application DeveloperCollins Consulting, Inc

Senior Developer – Mainframe / Assembler (z/OS, TPF)Lumen Solutions Group Inc

Software Developer, JourneymanPeraton

Senior Software DeveloperCortek Inc

Senior Software DeveloperNoblis

Sr. Java Developer (Ping/IAM)Software Guidance & Assistance

Software Developer, SeniorPeraton

SR Java Software Developer - Space DomainPeraton

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