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This developer will serve as a technical authority for digital forensic tooling, secure data-ingest pipelines, custom data-processing utilities, and automated delivery practices that accelerate incident triage and threat analysis. The work combines software engineering, systems automation, data processing, DevSecOps, and cybersecurity to help tactical security teams investigate threats and sustain critical operations.

MetaPhase Consulting

Cyber Capability Developer-TS/SCI

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Cyber Capability Developer-Ts/Sci

You will help build and support software across a variety of cutting-edge domains, including computer vision, atmospheric and physics-based modeling, high-performance computing (HPC), space domain awareness, and machine learning. We are a team of collaborative scientists and software engineers who are passionate about building and maintaining high-quality, extensible code using modern C++ practices.

Stellar Science Ltd Co

Scientific Software Developer (DC, NoVA)

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Serving federal, state, & local government clients as well as public higher education institutions, our team of professionals brings fresh perspective to help clients anticipate disruption, reimagine the possible, and fulfill their mission promise. The wage range for this role takes into account the wide range of factors that are considered in making compensation decisions including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs.

YEAR

Deloitte

Ruby Developer - Project Software Engineer III

Scientific Software Developer (Dc, Nova)

Compensation decisions depend on a wide range of factors, including but not limited to skill sets, experience and training, security clearances, licensure and certifications, and other business and organizational needs. Knowledge of GL accounting, financial close and consolidation processes, payroll accounting and accruals, account reconciliations, journal entries and reclassifications, and retroactive and corrective adjustments.

Guidehouse

Sr OneStream Developer

Active Secret Guidehouse seeks a Palantir Developer to support the Department of Defense (DoD) by designing, building, and operating data solutions in the Vantage platform, leveraging Palantir Foundry to enable authoritative, decision-grade financial and operational insights. Engineer and optimize data models, Delta tables, and curated datasets to support financial reporting, PPBE workflows, auditability, and mission analytics within Advana and downstream Foundry use cases.

Palantir Developer

Foster Analytics Excellence Contribute reusable platform content, including ontology patterns, dashboard templates, and integration recipes, to support continuous curriculum refresh Document data sources, metrics definitions, and analytical methodologies for organizational knowledge. 4+ years of software or data engineering experience (data analysis or data science experience considered), including 1.5+ years hands-on with Palantir Foundry, Gotham, AIP, or MSS.

Agile Defense

MSS Developer - Falls Church

Computer Science, Cybersecurity, Digital Forensics, Information Technology, Software Engineering, Data Science, Criminal Justice with a focus on Cybercrime, Network Security, Computer Engineering, etc. Digital Forensics Analyst, Cybersecurity Analyst, Malware Analyst, Incident Response Developer, Threat Intelligence Developer, Security Automation Engineer, etc.

Cymertek

Forensics Scripting Developer

MSS Developer - Arlington (VA)

In this matrixed role, you will support the creation, prototyping, and operationalization of cutting-edge AI/ML Proof of Concepts (PoCs)-including GenAI/LLMs, NLP, and computer vision-specifically tailored to Intelligence Community (IC) mission use cases. Responsibilities include, but are not limited to: Rapid PoC & demo prototyping (50%): Assist senior developers in designing, coding, and deploying visual AI/ML prototypes (GenAI/LLMs, NLP, computer vision) to address IC mission needs.

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.

Science Applications International Corp

AI/ML Developer

Experience developing and maintaining applications using Microsoft Power Platform suite (Model-driven and Canvas App, Power BI, Power Automate, Power Pages/Portals, Portal Management MDA, Power Apps Pipeline) in an Azure environment. 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.

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

Foundry Developer

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In order to determine whether Form I-9 documentation is valid, this employer uses E-Verify’s photo screening tool to match the photograph appearing on some permanent resident and employment authorization cards with the official U.S. Citizenship and Immigration Services’ (USCIS) photograph. We are seeking a SharePoint Developer to build and maintain custom Microsoft 365 solutions, including SPFx web parts, Power Platform apps and flows, and API-based integrations that move data between SharePoint and downstream reporting systems.

With ten offices across the United States, 450+ professionals and 350+ business professionals, Manatt, Phelps & Phillips, LLP (www.manatt.com), is a multidisciplinary, integrated national professional services firm known for quality and an extraordinary commitment to clients. The firm’s groundbreaking approach—bringing together legal services, advocacy and business strategy—differentiates Manatt from its competitors and positions the firm to provide a distinct and compelling value proposition.

Manatt Phelps & Phillips

SharePoint Developer

A Bachelor’s or Master’s degree in Computer Science (or a related field) is preferred, along with 11+ years of relevant experience , including: Hands-on experience with ServiceNow, including ITSM, ITOM, and CMDB . Emergent Technologies Inc. is seeking a talented and motivated ServiceNow Developer / Integration Engineer to join our growing technology team in support of a mission-critical Government customer.

Emergent Technologies

Service Now Developer - Integration Engineer

Compensation decisions depend on a wide range of factors, including but not limited to skill sets, experience and training, security clearances, licensure and certifications, and other business and organizational needs. Note that Guidehouse will never charge a fee or require a money transfer at any stage of the recruitment process and does not collect fees from educational institutions for participation in a recruitment event.

ETL Developer

Knowledge of GL accounting, financial close and consolidation processes, payroll accounting and accruals, account reconciliations, journal entries and reclassifications, and retroactive and corrective adjustments. Responsibilities will include, but are not limited to: Lead end-to end design, development, configuration, and deployment of OneStream applications that focus on financial close, financial reconciliation, and payroll management.

Guidehouse Inc

The Appian Developer will be responsible for designing, developing, maintaining, and enhancing Appian-based applications and automated workflows supporting critical criminal justice operations. Amyx is seeking to hire an Appian Developer to support our Air Force Office of Special Investigations (AFOSI) Criminal Justice Information Center (CJIC) Professional Support Services contract in the Quantico, VA area.

Amyx, Inc. is a financially strong ISO 9001-2008 certified and CMMI-DEV Level 3 appraised small business founded in 1999 and headquartered in Reston, Virginia. Amyx’s services are listed below. These services, backed by proven solutions, are delivered by a workforce of exceptional professionals, many of whom possess over 25 years of experience. Amyx personnel have strong core values rooted in public service and hold an intense belief that service to the Government can make a difference. Additional information on our core capabilities can be found on our Core Capabilities page.

Amyx Inc

Appian Developer

Guidehouse seeks a Palantir Developer to support the Department of Defense (DoD) by designing, building, and operating data solutions in the Vantage platform, leveraging Palantir Foundry to enable authoritative, decision-grade financial and operational insights. Engineer and optimize data models, Delta tables, and curated datasets to support financial reporting, PPBE workflows, auditability, and mission analytics within Advana and downstream Foundry use cases.

Create and deploy custom web applications using ESRI's Experience Builder, or custom JavaScriptapplications leveraging the ArcGIS API for JavaScript, python, etc.• Set up and customize Dashboards to display real-time data, key performance indicators, and other relevantinformation in an interactive and visually appealing manner.• Develop solutions to meet the needs of the GMO Programs (i.e., COP, HIFLD, and GII).• Develop testing criteria based on Operational Requirements and Key Performance Parameters.• Develop test plans and test scripts to ensure that the integrity and security of the system(s) are adequatelyprotected, and user requirements are met.•

PROVATOHR INC

Mid-Level Application Developer

Responsible for developing and implementing cloud applications, migrating existing on-premises applications to the cloud, debugging cloud stacks, managing policies for the use of cloud services, requests for new technology, establishing a secure cloud environment, ensuring appropriate availability/uptime design. The entire section leverages agile and works to provide enhanced reporting and global searching capabilities to facilitate task management, cross-utilization, and address national intelligence priorities while protecting confidential data and sources.

Systems Software Developer Jobs in Reston, VA

Cyber Capability Developer-TS/SCI MetaPhase Consulting

Cyber Capability Developer-Ts/Sci MetaPhase Consulting

Scientific Software Developer (DC, NoVA) Stellar Science Ltd Co

Ruby Developer - Project Software Engineer III Deloitte

Scientific Software Developer (Dc, Nova) Stellar Science Ltd Co

Sr OneStream Developer Guidehouse

Palantir Developer Guidehouse

MSS Developer - Falls Church Agile Defense

Forensics Scripting Developer Cymertek

MSS Developer - Arlington (VA) Agile Defense

AI/ML Developer Science Applications International Corp

Foundry Developer CACI

SharePoint Developer Manatt Phelps & Phillips

Service Now Developer - Integration Engineer Emergent Technologies

ETL Developer Guidehouse

Sr OneStream Developer Guidehouse Inc

Appian Developer Amyx Inc

Palantir Developer Guidehouse Inc

Mid-Level Application Developer PROVATOHR INC

Cloud Developer – Senior / Consultant II Amentum

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