261 junior software developer jobs at 124 companies in Centreville, MD
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Junior Software Developer
Annapolis Junction or Columbia
$130k-$150k/yrOnsiteFull Time
Freedom Technology Solutions Group: Provides geospatial and software engineering solutions for national security agencies.
3+ YOEActive security clearance with polygraph; bachelor\u0002s in a technical discipline (or 7 years' experience) with 3 years software development; front-end experience with JavaScript, Node.js, AngularJS/Angular, Vue.js; documentation experience.
ACKtive Engineering Solutions: Provides specialized engineering and consulting services for government clients.
1+ YOERequires US citizenship, active TS/SCI clearance, and 1+ year of iOS software engineering experience. Native iOS, embedded development, vulnerability research, and reverse-engineering tool experience required.
Johns Hopkins University Applied Physics Laboratory: Conducts research and engineering for national security and space.
3+ YOERequires a bachelor's degree in a relevant technical field, 3 years of software development experience, strong communication skills, occasional travel, U.S. citizenship, and eligibility for Secret clearance.
Base-2 Solutions: Delivers engineering and technology services for national security.
0+ YOEBachelor's degree in computer science or related discipline, or four years of software engineering experience in lieu of degree. No demonstrated experience required. Active Top Secret/SCI clearance with full-scope polygraph required.
Belay Technologies: Provides specialized technology and engineering services to the DoD.
3+ YOEStrong Python development for production agentic integrations, experience with AI models, stream processing (Kafka), Elasticsearch, AWS/Kubernetes, Gitlab CI/CD, and TS/SCI clearance with polygraph or equivalent experience.
Tiber Technologies: Providing specialized engineering and security services for federal missions.
U.S. citizen with active clearance and polygraph required. Bachelor's in computer science, engineering, or related field required. Proficiency in Java, Python, PySpark, and experience with big-data frameworks (Hadoop, MapReduce, Pig), ETL, JSON/BSON.
AeroVironmentNASDAQ: AVAV: Designs and manufactures unmanned aircraft and tactical missile systems.
0+ YOEBS in CS/CE/IT required,0–4 years experience,proficiency in C,C++,Python,experience with Artifactory,Docker,Terraform,Ansible,Packer,Jenkins/Bamboo,understanding of hardware,active TS/SCI with polygraph required.
Peraton: National security and mission-critical government technology services provider.
0+ YOETS/SCI with polygraph required. Bachelor's in CS/Engineering/Math + 2 years software engineering OR Master's/PhD with 0 years OR 6 years experience with HS. Experience with prompt engineering and retrieval-augmented generation (RAG).
BigBear.aiNYSE: BBAI: Provides AI-powered decision intelligence software for national security.
3+ YOE3+ years software engineering experience with strong Java and Spring Boot skills, RESTful services, MongoDB/NoSQL experience, automated testing, and TS/SCI with poly clearance required.
Java, Spring Boot, MongoDB, Vue.js, Apache Kafka, Linux
RealmOne: Provides advanced technology services for national security agencies.
Up to 3 years of experience with a BA/BS degree; assists senior staff in software design, development, coding, testing, debugging, and systems analysis. Active security clearance required.
BigBear.aiNYSE: BBAI: AI-powered decision intelligence for complex mission environments.
3+ YOE3+ years software engineering with a technical Bachelor's (or 7+ years experience), strong Java and Spring Boot skills, MongoDB or similar DB experience, and automated testing experience; active TS/SCI with poly required.
Java, Spring Boot, MongoDB, Apache Kafka, Linux, Vue.js
Anthem Engineering: Developing software and system solutions for government intelligence missions.
Entry-level software engineer with experience in one or more languages (Java, JavaScript, TypeScript, Python), familiarity with Git, software development principles, and strong communication and problem-solving skills.
Entegra Systems: Provides engineering and intelligence analysis for government missions.
7+ YOESeven years in software development; two years in SIGINT; TS/SCI with poly; front-end web development with JavaScript/React; Hadoop/HDFS; distributed storage; Windows/Linux; ability to guide juniors.
Lockheed MartinNYSE: LMT: Designs and manufactures advanced aerospace, defense, and security systems.
Requires TS/SCI clearance, software development experience, design, testing, and debugging experience, knowledge of multiple programming languages, and familiarity with Linux and Java.
Nightwing: Provides advanced cyber and intelligence solutions for national security.
1+ YOEBachelor's in CS/CE or related, 1+ years programming experience in C/C++ and Python, strong OS and network internals knowledge, Top Secret/SCI + Full Scope Poly, familiarity with binary analysis tools and software security.
HalvikNASDAQ: TTEK: Provides technology, analytics, and management consulting to federal agencies.
2+ YOEBachelor's in CS or related,2+ years Java development,SQL/Oracle experience,Agile experience,knowledge of JSON and XML,strong analytical and communication skills.
Java, SQL, Oracle, JSON, XML, JSP, Spring, JavaScript, CSS, HTML
TravelersNew York Stock Exchange: TRV: Provider of commercial and personal property casualty insurance.
2+ YOEBachelor’s degree in computer science or related STEM field, plus 2+ years of software development experience building enterprise applications and strong object-oriented programming fundamentals.
Accenture Federal ServicesNYSE: ACN: Provides technology and consulting services to U.S. federal agencies.
0+ YOE0-2 years experience with at least one programming language; bachelor’s degree in CS/Systems or 4 years relevant experience; TS/SCI with polygraph required; familiarity with software development, CI/CD, databases, cloud, and containerization.
LegenceNASDAQ: LGN: Provider of engineering, installation, and maintenance for building systems.
2+ YOEBachelor's degree in a technical discipline, 2+ years full-stack web development experience, proficiency with React and Python or Java, Microsoft Azure and SQL Server experience, familiarity with Claude Code and AI-assisted development. U.S. work authorization required; no visa sponsorship.
Microsoft Azure, Azure App Service, Azure Functions, Azure SQL, Cosmos DB, Azure AI Foundry, Azure OpenAI Service, Azure DevOps, GitHub Actions, Microsoft Entra ID, React, Python, Java, Microsoft SQL Server, Microsoft Fabric, Claude Code, Cursor, GitHub Copilot, Crystal Reports, Microsoft Power BI, Spectrum