272 junior software developer jobs at 140 companies in Fallston, MD

2mo
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Junior Software Engineer
Annapolis Junction, Maryland, United States
$70k-$190k/yr OnsiteFull Time
Belay Technologies
Belay Technologies: Provides specialized technology and engineering services to the DoD.
0+ YOEEntry-level software engineer with Python proficiency, production experience, and understanding of AI concepts and streaming data pipelines.
Python, Apache Kafka, Elasticsearch, PydanticAI, Langgraph, DeepAgents, APIs, Software development tooling
2mo
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Junior Software Developer
Annapolis Junction or Columbia
$130k-$150k/yr OnsiteFull Time
Freedom Technology Solutions Group
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.
JavaScript, Node.js, AngularJS, Angular, Vue.js, Elastic Search, MongoDB, AWS, Git, EngineX
2d
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Junior Software Engineer
Laurel, Maryland, United States
$85k-$195k/yr OnsiteFull Time
Johns Hopkins University Applied Physics Laboratory
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.
object-oriented programming
6d
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Junior Software Engineer
Hanover, Maryland, United States
OnsiteFull Time
Base-2 Solutions
Base-2 Solutions: Delivers engineering and technology services for national security.
Bachelor's in Computer Science or equivalent experience; U.S. citizenship and active Top Secret/SCI with Full Scope Polygraph; no prior experience required; strong software engineering fundamentals.
Java, C#, C++, JavaScript, Python, Scala, Ruby, Go, Eclipse, NetBeans, IntelliJ IDEA, PyCharm, Visual Studio, VS Code, Windows, Unix, Linux, macOS, JIRA, Confluence, GitHub, ServiceNow, Spring, Angular, Bootstrap, Oracle, MySQL, MongoDB, Maven, Jenkins, Docker, Kubernetes, Git, SVN, CVS, AWS, Azure, Google Cloud
3d
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Junior Software Engineer (Clearance Sponsorship)
Annapolis Junction, Maryland, United States
$94k-$127k/yr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
0+ YOE0+ years of related experience; skills in Java, Linux, Python, application development, and software development. U.S. citizenship and Top Secret SCI with Polygraph clearance required.
Java, Linux, Python
1mo
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Junior Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
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.
Java, Python, PySpark, Pig, MapReduce, JSON, BSON, Hadoop, ETL
2mo
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Junior Software Engineer
Laurel, Maryland, United States
$85k-$120k/yr OnsiteFull Time
Visionist
Visionist: Provides software engineering and data analytics for national security.
Active Top Secret/SCI clearance with polygraph required; Bachelor's in a technical discipline (or 4 years experience); experience with production systems, Python, Kubernetes, AWS, CI/CD, and cloud/container concepts; strong communication skills.
AWS, Kubernetes, Python, CI/CD, Infrastructure as Code (IaC), retrieval augmented generation (RAG)
5d
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Junior Software Engineer
Jessup, Maryland, United States
$84k-$180k/yr OnsiteFull Time
AeroVironment
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.
C, C++, Python, C#, Java, Artifactory, Docker, Terraform, Ansible, Packer, Jenkins, Bamboo
1mo
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Junior Software Data Engineer
Fort Meade or Jessup
$104k-$166k/yr OnsiteFull Time
Peraton
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).
Prompt Engineering, retrieval-augmented generation (RAG), AI/ML frameworks, LLMs
4w
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Junior Software Developer (Backend Focused)
Annapolis Junction, Maryland, United States
OnsiteFull Time
BigBear.ai
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
4w
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Junior Software Developer (Backend Focused)
Annapolis Junction, Maryland, United States
OnsiteFull Time
BigBear.ai
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
2w
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Software Engineer II
Wilmington, Delaware, United States
OnsiteContract
CTG
CTG: Provides IT services and digital transformation solutions to businesses.
5+ YOE5+ years software development with Angular and .NET, C#, Azure, DevOps and CI/CD experience; strong SOLID and testing practices; ability to lead modernization and mentor junior developers.
Angular, .NET Framework, .NET Core, C#, Web APIs, Entity Framework Core, Microsoft SQL Server, Azure, DevOps, CI/CD, GitLab, ASP.NET Web Forms, PrimeNG, Kendo UI
3w
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Junior Software Engineer Level 0 - Polygraph Required Annapolis Junction
Annapolis Junction, Maryland, United States
HybridFull Time
Anthem Engineering
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.
Java, JavaScript, TypeScript, Python, Git
2mo
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Senior Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
Entegra Systems
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.
JavaScript, React, Hadoop, HDFS, C, C++, Linux, Windows, SOA, Web Services
1mo
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Software Developer
Annapolis Junction, Maryland, United States
$64k-$128k/yr OnsiteFull Time
Nightwing
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.
Python, C, C++, Java, Windows, Linux, IDA Pro, Ghidra, ASLR, DEP, ARM, RISC, PPC
1mo
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Junior Software Developer (Active TS/SCI + Poly)
Fort Meade, Maryland, United States
OnsiteFull Time
Aperio Global
Aperio Global: Develops cybersecurity, AI, and intelligence software for government missions.
2+ YOEBachelor's degree (or equivalent) + 2+ years experience; experience with Java, Python, PySpark, Hadoop, MapReduce, ETL, Pig, JSON/BSON; strong problem-solving and collaboration; active TS/SCI with Polygraph required.
Java, Python, PySpark, Hadoop, MapReduce, ETL frameworks, Pig, JSON, BSON
2w
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Software Developer
Greenbelt, Maryland, United States
$100k-$110k/yr OnsiteFull Time
Halvik
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
2w
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Associate Software Engineer
Fort Meade, Maryland, United States
$77k-$128k/yr OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
0+ YOEBachelor's in CS or related,0–2 years software development experience or internships,knowledge of Python/Java/JavaScript/C/C++,EMR not mentioned,active TS/SCI with polygraph required.
Python, Java, JavaScript, C/C++, AWS, Docker, Kubernetes, React, Angular
3w
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Jr. Software Engineer
Annapolis Junction, Maryland, United States
$90k-$120k/yr OnsiteFull Time
Accenture Federal Services
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.
Java, Python, C++, JavaScript, Spring, Hibernate, React, Angular, Vue.js, Django, Flask, STL, Qt, Boost, Git, Jenkins, PostgreSQL, MySQL, Oracle, ElasticSearch, MongoDB, AWS, Docker, Kubernetes
1mo
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Software Engineer
Beltsville, Maryland, United States
$90k-$110k/yr OnsiteFull Time
Legence
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