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Position Title: Web Developer Security EngineerClearance Requirement: Public Trust (Tier 2)Location: Remote/Hybrid (as approved by customer)Position Overview: Nationwide IT Services (NIS) is seeking a Web Developer Security Engineer to support application security initiatives across web applications, APIs, and the software development lifecycle (SDLC). The selected candidate will be responsible for secure application design, vulnerability management, DevSecOps integration, security monitoring, WAF administration, File Integrity Monitoring (FIM), and Tier II security operations support.

Nationwide IT Services

Web Developer Security Engineer

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However, 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. Constellation West provides fully integrated solutions spanning all aspects of system/network engineering, system/network administration, data management, information assurance, quality assurance, full lifecycle support, software development, and geospatial information services.

Client/Server Software Solutions Inc

IRS CAS-Senior Software Developer/Engineer

The ideal candidate should have extensive experience developing custom SFMC solutions using AMPscript, SQL, SSJS, APIs, Journey Builder, and Automation Studio, along with a proven track record of delivering personalized, data-driven customer engagement campaigns. Strong expertise in: AMPscript SQL Server-Side JavaScript (SSJS) HTML/CSS for email development Journey Builder Automation Studio Email Studio Contact Builder Data Extensions Experience developing dynamic and personalized email communications.

Cardinal Integrated Technologies Inc

Salesforce Marketing Cloud Developer

jobdiva

SIGINT Engineer, Signals Processing Developer, Intelligence Systems Developer, RF Systems Engineer, Communications Systems Developer, Cyber Intelligence Developer, Embedded Systems Developer, Electronic Warfare Engineer, Signal Analysis Engineer, Systems Integration Engineer, Intelligence Solutions Architect, etc. Electrical Engineering, Computer Science, Information Systems, Software Engineering, Systems Engineering, Signal Processing, Telecommunications, Cybersecurity, Data Science, Computer Engineering, Physics, Mathematics, etc.

Cymertek

SIGINT Systems Developer

The Expert Power BI Developer serves as a senior technical contributor responsible for designing, developing, implementing, refining, and supporting complex Power BI dashboards, reports, semantic models, and data visualization solutions in support of enterprise reporting, analytics, and operational decision-making. This position works closely with ETL Developers, Data Analysts, Power Apps Developers, Technical Project Managers, Scrum Masters, testers, technical writers, and Government stakeholders to translate business needs into effective reporting and dashboard capabilities.

YEAR

9th Way Insignia

Expert Power BI Developer

GreenHouseAPI

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.

Avid Technology Professionals LLC

Software Developer (Full Stack Developer)

We’re looking for thoughtful, skilled professionals who thrive as trusted partners building technology-agnostic solutions and want to apply their talents supporting customers with difficult and important mission sets. We are looking for a Mid-Level Software Developer to join our team and contribute to the design, development, and maintenance of a web-based tool used by non-technical end users.

Redhorse Corporation

Mid-Level Software Developer

Pay Range : 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. In this role, you will create, modify, and maintain application programs, components, and interfaces within the COTS software suite used to perform everyday business operations such as HR, Financials, and Customer Relationship Data.

CACI provides information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. A member of the Fortune 1000 Largest Companies, the Russell 2000 Index, and the S&amp;P SmallCap 600 Index, CACI provides dynamic careers for over 15,800 employees working in over 120 offices worldwide. Visit <a href="http://www.caci.com" target="_blank" itemprop="url" mns_rt="Company">www.caci.com</a>. 
 
 We strive to sustain a corporate culture based on integrity - one that's focused on treating customers ethically and making their priorities our priorities. We pride ourselves in finding and hiring people with the highest intellectual capital, and providing them with challenging opportunities and encouraging their innovation and initiative.

CACI

Senior COTS Developer

Document and perform systems software development, including deployment of build artifacts across different environments leveraging GitFlow constructs and using industry leading DevOps tools like GitHub, Jenkins, and scripting (e.g., python, bash). Support the Agile software development lifecycle following Program SAFe practices while coordinating closely with team members, Product Owners and Scrum Masters to ensure User Story alignment and implementation to customer use cases.

SAIC is a premier Fortune 500® technology integrator driving our nation's digital transformation. Our robust portfolio of offerings across the defense, space, civilian, and intelligence markets includes secure high-end solutions in engineering, IT modernization, and mission solutions. Using our expertise and understanding of existing and emerging technologies, we integrate the best components from our own portfolio and our partner ecosystem to deliver innovative, effective, and efficient solutions that are critical to achieving our customers' missions.

We are a team of 26,000 strong driven by mission, united purpose, and inspired by opportunity. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.1 billion. For more information, visit saic.com.

Leidos Holdings Inc.

Java Developer (Sme)

The Senior Full-Stack Developer builds the software that makes the service operable - the integration with the national customs system and port-community data, the software solutions and internal tools (including tools that draw on external data sources), and the secure data flows between the field, the analysis team and the customs administration. Develop software solutions and internal tools - including tools that integrate with external data sources (such as commercial international trade-price data) - that power the teams price-verification and risk work, and build and maintain the verification console and interfaces that present outputs and reporting in a usable, auditable form.

Securiport LLC

Senior Full-Stack Developer

Leidos Holdings Inc

Java Developer (SME)

Proficiency in full-stack development technologies, including Java, JavaScript, Node.js, React, jQuery, Bootstrap, REST APIs, JSON, XML, HTML/CSS, and Visual Studio. TDI is looking for a Full Stack Developer whowill support the Compartmented Enterprise Services Office (CESO) program delivering mission-focused software capabilities for DISA.

Tetrad Digital Integrity LLC

Full Stack Developer

Additionally, based on a DevOps framework, you will participate in and/or direct major deliverables of projects through all aspects of the software development lifecycle, including scope and work estimation, architecture and design, coding, and unit testing. January 21, 2026 For 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.

Everything we do is built on our commitment to do the right thing for our customers, our employees, and our communities. Learn more about the values and culture that are the foundations of our business.

Leidos

MarkLogic Developer (SME)

NET Developer, the candidate will leverage their blend of business analysis, organization, communication, and technical skills, to perform the following: Develop enterprise applications and support end-to-end software development and delivery in an Agile Microsoft code-base environment. NET Developer, you will be working on an Agile team that develops enterprise web applications using technologies that include ASP.NET, NET CORE, NET 6, MVC, Entity Framework, and Oracle and Azure DevOps.

Andworx

Senior .NET Developer

BreezyHR

Sr. Marklogic Developer

This role supports the design, development, integration, testing, deployment, and sustainment of mission-critical applications used for traveler processing, immigration management, and vetting at and between U.S. Ports of Entry. Please note the targeted compensation range is provided as an estimate, and any actual compensation offer may vary depending on the needs of the company, or an applicant's skillset, competencies, experience, education, certifications, location, or other factors.

BigBear.ai

NAVSEA-one of the Navy's six system commands and the organization responsible for both industrial operations and digital modernization-has partnered with National Capitol Contracting on the congressionally funded Naval Digital Logistics Acceleration program. The successful candidate will develop and maintain Foundry platform components, data pipelines, models, dashboards, applications, and workflows that support the Navy's digital and operational capabilities.

National Capitol Contracting LLC

Senior Foundry Developer

ADAPTED_NOW

The ideal candidate will have hands-on experience building Flutter applications for iOS and Android, a strong understanding of software engineering principles, and experience working within Agile development teams. The Flutter Developer will collaborate with product managers, UI/UX designers, QA engineers, and backend developers to deliver scalable, secure, and user-friendly applications that support business objectives.

Sarnova

Flutter Developer

Ivy Exec

What You'll Work On: Development: Design, configure, and develop ServiceNow CMDB solutions including Workspace views, Platform Analytics dashboards and indicators, Service Catalog items, CMDB Health and Relationship Health rule configurations, ownership routing, and data quality automation, in coordination with the ServiceNow Platform Team. Translation and Backlog Support: Translate CMDB-related initiative and governance needs, such as Attack Surface Management, Trusted Enterprise Transformation, and CMDB Health and Workspace governance into ServiceNow-ready business outcomes, requirements, user stories, acceptance criteria, and UAT scenarios.

Booz Allen is an advanced technology company. We build commercial-grade products and solutions for America’s most critical defense, civil, and national security priorities.

Booz Allen Hamilton Inc.

Cmdb And Attack Surface Management Support - Servicenow Developer

Our comprehensive offerings include systems integration, IT security, continuity of business operations support, IT infrastructure planning, enterprise resource planning (ERP) systems support, business process automation, cloud migration, software engineering, systems engineering, and IT project management. Bachelor's degree in Computer Science, Information Technology, or a related field; alternatively, 4 additional years of relevant experience (beyond the 5 years required below) may be substituted in lieu of a degree.

Application Developer Jobs in Ashburn, VA

Web Developer Security Engineer Nationwide IT Services

IRS CAS-Senior Software Developer/Engineer Client/Server Software Solutions Inc

Salesforce Marketing Cloud Developer Cardinal Integrated Technologies Inc

SIGINT Systems Developer Cymertek

Expert Power BI Developer 9th Way Insignia

Software Developer (Full Stack Developer) Avid Technology Professionals LLC

Mid-Level Software Developer Redhorse Corporation

Senior COTS Developer CACI

Java Developer (Sme) Leidos Holdings Inc.

Senior Full-Stack Developer Securiport LLC

Java Developer (SME) Leidos Holdings Inc

Full Stack Developer Tetrad Digital Integrity LLC

MarkLogic Developer (SME) Leidos

Senior .NET Developer Andworx

Sr. Marklogic Developer Leidos

Full Stack Developer BigBear.ai

Senior Foundry Developer National Capitol Contracting LLC

Flutter Developer Sarnova

Cmdb And Attack Surface Management Support - Servicenow Developer Booz Allen Hamilton Inc.

Senior COTS Developer (Active TS Clearance/SCI w/CI Poly Required) A&M Technologies, Inc.

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