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About Expression: Founded in 1997 and headquartered in Washington DC, Expression provides data fusion, data analytics, software engineering, information technology, and electromagnetic spectrum management solutions to the U.S. Department of Defense, Department of State, and national security community. Expression was ranked #1 on the Washington Technology 2018's Fast 50 list of fastest growing small business Government contractors and a Top 20 Big Data Solutions Provider by CIO Review.

Expression

Full Stack Developer

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This role focuses on hands-on application development using JavaScript, TypeScript, ArcGIS Maps SDK for JavaScript, and modern web application frameworks to test ideas, visualize complex spatial data, and support early-stage innovation. We are seeking an Application Developer to join Esri’s Geo Experience Center team, where you will contribute to building prototype applications that explore digital cartography, advanced map visualizations, and web-based GIS experiences.

We show people how to make the world work better with maps and apps. We are the best in our fields from all walks of life and all over the world. We come together in small teams to make big ideas happen. With our GIS technology, anything is possible. Come join us.

Esri

Application Developer - JavaScript

Black Canyon Consulting (BCC) is searching for a Software Developer in Bioinformatics and Big Data to support our work at the National Institutes of Health. Work with a diverse group of scientists, bioinformaticians and other developers across the center to implement efficient bioinformatics algorithms.

BCC-NIH

Software Developer (C++, Python)

The ideal candidate will have strong hands-on experience in Documentum upgrades, installations, development, and extensive exposure to xECM for SAP, Brava, and Info Archive solutions. The role will be responsible for designing, modernizing, and governing ECM platforms, ensuring scalability, compliance, and high availability across enterprise environments.

Spark Tek Inc

Documentum Developer

jobdiva

Host-based and network-based forensics, cyber incident response, cyber-criminal investigations, intrusion detection/analysis, and designing countermeasures and mitigations for programming language weaknesses and vulnerabilities. Software vulnerability research and exploit development, including exploits, shellcode, and bypass techniques for mitigations such as NX (nonexecutable stack), ASLR, and advanced exploit protections.

Oak Grove Technologies, Llc

Senior Red Team Wifi Developer

This role focuses on hands-on application development using JavaScript, TypeScript, ArcGIS Maps SDK for JavaScript, and modern web application frameworks to test ideas, visualize complex spatial data, and support early-stage innovation. We are seeking an Application Developer to join Esri's Geo Experience Center team, where you will contribute to building prototype applications that explore digital cartography, advanced map visualizations, and web-based GIS experiences.

YEAR

Application Developer - Javascript

ActioNet is a CMMI-DEV Level 4, CMMI-SVC Level 4, ISO 20000, ISO 27001, ISO 9001, HDI-certified, woman-owned IT Solutions Provider with strong qualifications and expertise in Agile Software Engineering, Cloud Solutions, Cyber Security, and IT Managed Services. IgniteAction, a joint venture between ActioNet and Ignite have an immediate need for a Full Stack Developer, as part of a dynamic and passionate team of industry-leading individuals supporting the best practices in Agile Software Development.

ActioNet, Inc.

Actionet, Inc. Careers - Full Stack Cloud Developer

Design, develop, and maintain applications using COBOL, JCL, DB2, SAM, and CICS optional Perform impact analysis, estimation, coding, unit testing, and defect resolution. Handle version control and deployment using SCM tools like Endevor preferred (Changeman, ISPW, PAR.

Senior/Mid-level Mainframe Lead/Developer

Experience developing modern full-stack web applications using JavaScript frameworks such as React or Angular, RESTful APIs, and relational databases (SQL Server, PostgreSQL, or Oracle). Our projects are built around a great user experience, developing custom software that supports business process and workflows, analytical, data management and reporting capabilities for our customers.  .

Akumen, Inc.

Senior Full Stack Developer

GreenHouseAPI

FULL_TIME

Overview: BigBear.ai is seeking a Application Developer to join exciting, up-and-coming projects where you will design, develop, prototype, modify, and integrate solutions to deliver mission-centric results. This fast-paced and dynamic environment demands a flexible, highly motivated engineer with a strong desire to learn new skills and tackle evolving challenges that are critical to national security.

Bigbear.ai

Application Developer 3

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You’ll participate in feature delivery end-to-end—design, implementation, testing, code reviews, deployment support, and technical demonstrations, helping ensure our platform remains reliable, scalable, and ready for real-world operations. In this role, you’ll contribute production-ready code across backend services and frontend user experiences, partnering closely with a cross-functional product team in an Agile/DevOps environment.

The ideal candidate may or may not be a United States citizen and must have at least a Bachelor or Master of Science degree in Computer Science, Information Technology or Engineering or equivalent work experience. As a Software Developer, you will contribute to development efforts that support the goals and initiatives of the product team and organization while learning Software Development practices from an experienced team.

Software Developer

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Design, develop and implement AWS Connect processes to include new or modifications to applications, forms, workflow, policies, actions, access control, interfaces, and any other configurations required to support client processes . Excellent understanding of change management, testing requirements, techniques, and tools to ensure high availability of systems .

GovServicesHub

AWS Connect Developer and Tester

Design, develop, and integrate AI-powered capabilities using or in conjunction with low-code/no-code platforms (e.g., Appian, UiPath, Pega) to enable scalable automation and workflow solutions. Other relevant AI/ML or cloud certifications, such as Appian, Pega, or UiPath Developer; AWS Certified Solutions Architect; Microsoft Azure Solutions Architect Expert; or Google Cloud Professional Cloud Architect.

iCatalyst

Jr. AI Developer

Specialized Qualifications: Proficiency in programming languages such as Python, C/C++, and/or Assembly, along with scripting languages (e.g., Bash, PowerShell), Deep understanding of operating systems internals and kernel-level programming. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization.

Nightwing Intelligence Solutions

Lead CNO Developer (Onsite)

Design, develop, and integrate AI-powered capabilities using or in conjunction with low-code/no-code platforms (e.g., Appian, UiPath, Pega) to enable scalable automation and workflow solutions. Other relevant AI/ML or cloud certifications preferred: Appian/Pega/UiPath Developer, AWS Certified Solutions Architect, Microsoft Azure Solutions Architect Expert, or Google Cloud Professional Cloud Architect.

AI Developer I

Most roles at RSM follow a hybrid workstyle, which means team members are aligned to an RSM office and come together in person when it best supports clients, teams, development or relationship-building. Experience developing ServiceNow solutions using JavaScript, Business Rules, Client Scripts, Script Includes, UI Policies, UI Actions, ACLs, Flow Designer, and/or workflows.

Servicenow Developer

We seek developers with an AI‑first engineering mindset, able to choose between deterministic code, LLMs, and agents, and to design for probabilistic outputs with robust fallback strategies while balancing cost, latency, and reliability. Core GenAI & LLM expertise includes integrating LLMs into production, prompt engineering, structured outputs, RAG pipelines, effective context management, and quality/hallucination evaluation.

WISETEK PROVIDERS INC

AI Developer

Sr. AI Developer

Candidate must, at a minimum, have one of these certifications: UiPath Certified Advanced RPA Developer, AWS Certified Cloud Practitioner, AWS Certified Developer, AWS Certified Solutions Architect, Azure Developer Associate, Azure Solutions Architect. Our Digital Modernization sector is at the forefront of next-generation technology, architecting cutting-edge solutions in cyber defense, logistics optimization, security operations, and decision intelligence.

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.

Systems Developer Jobs in Annapolis Junction, MD

Full Stack Developer Expression

Application Developer - JavaScript Esri

Software Developer (C++, Python) BCC-NIH

Documentum Developer Spark Tek Inc

Senior Red Team Wifi Developer Oak Grove Technologies, Llc

Application Developer - Javascript Esri

Actionet, Inc. Careers - Full Stack Cloud Developer ActioNet, Inc.

Senior/Mid-level Mainframe Lead/Developer Spark Tek Inc

Senior Full Stack Developer Akumen, Inc.

Application Developer 3 Bigbear.ai

Full Stack Developer Bigbear.ai

Software Developer BCC-NIH

AWS Connect Developer and Tester GovServicesHub

Jr. AI Developer iCatalyst

Lead CNO Developer (Onsite) Nightwing Intelligence Solutions

AI Developer I iCatalyst

Servicenow Developer RSM

AI Developer WISETEK PROVIDERS INC

Sr. AI Developer iCatalyst

Junior Automation Developer (UiPath) Leidos Holdings Inc

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