69 junior java developer jobs at 34 companies in Hanover, PA

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
1mo
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Junior Application Developer
Annapolis Junction or Columbia
$140k-$190k/yr HybridFull Time
Freedom Technology Solutions Group
Freedom Technology Solutions Group: Provides geospatial and software engineering solutions for national security agencies.
3+ YOEActive TS/SCI with Polygraph; Bachelor in CS/Software Eng/IS plus 3 years of software dev; Master’s plus 1 year; 4-year substitution option; Python, Django, Docker, AWS, Java, JavaScript, ReactJS/Vue.js; Agile experience.
Python, Django, Docker, AWS, Java, JavaScript, ReactJS, Vue.js, PostgreSQL, HTML, CSS
2w
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Junior Software Developer
Annapolis Junction, Maryland, United States
$55k-$106k/yr OnsiteFull Time
Nightwing
Nightwing: Provides advanced cyber and intelligence solutions for national security.
2+ YOE2+ years Python and Java development, IDA/Ghidra plugin/script experience, x86 assembly, testing with JUnit/Pytest, familiarity with LLM inference tooling (Langchain, Langchain4j), grpc, Agile experience, BS in Computer Science related field, willingness to obtain security clearance.
Python, Java, IDA, Ghidra, x86 Assembly, JUnit, Pytest, Langchain, Langchain4j, Embedding Stores, MCP Servers, gRPC
2mo
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Junior Backend Software Developer
Columbia, Maryland, United States
$115k-$160k/yr OnsiteFull Time
Visionist
Visionist: Provides software engineering and data analytics for national security.
3+ YOETop Secret/SCI clearance with polygraph; bachelor's degree; 3 years software development; Java, REST, Spring Boot; MongoDB; automated testing.
Java, Spring Boot, MongoDB, REST, Automated Testing
3mo
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Junior Computer Scientist/Engineer
Aberdeen, Maryland, United States
$75k-$131k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
2+ YOEBachelor's in engineering or related field with 2 years software development experience; programming in Python/C++/Java; SECRET clearance required.
Python, C++, Java, Cloud platforms
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
2w
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Analytic Developer-Junior
Annapolis Junction, Maryland, United States
OnsiteFull Time
NetSage
NetSage: Delivering specialized cyber services to the U.S. federal government.
2+ YOETS/SCI with polygraph required; BS in Computer Science (or equivalent) + 2 years experience; experience with Java, Python, PySpark, ETL, JSON/BSON, Pig/MapReduce/Hadoop.
Java, Python, PySpark, JSON, BSON, Pig, MapReduce, Hadoop
1mo
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Junior DevOps Engineer
Annapolis Junction, Maryland, United States
$70k-$190k/yr OnsiteFull Time
Belay Technologies
Belay Technologies: Provides specialized technology and engineering services to the DoD.
TS/SCI with polygraph; bachelor’s degree (or 4 years SWE experience); experience with Linux, AWS, Docker/Docker Swarm, Terraform, Ansible, Git, CI/CD; willing to support rotating 24/7 on-call pager.
Linux, AWS, MASH, VMs, Docker Swarm, Docker, Docker Compose, GitLab CI/CD, Terraform, Ansible, Git, Python, NiFi, Elasticsearch, Java, Spring Boot, HAProxy, MongoDB
6d
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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
2d
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Junior Software Engineer
Hanover, Maryland, United States
$110k-$140k/yr OnsiteFull Time
Base-2 Solutions
Base-2 Solutions: Delivers engineering and technology services for national security.
0+ YOEBachelor's in computer science or related (or 4 years experience), TS/SCI with Full Scope Polygraph, no prior software experience required; familiarity with modern languages, tools, and cloud platforms.
Java, C#, C++, JavaScript, Python, Scala, Ruby, Go, Eclipse, NetBeans, IntelliJ IDEA, PyCharm, Microsoft Visual Studio, VS Code, Windows, Unix, Linux, macOS, Atlassian Suite (JIRA, Confluence), GitHub, ServiceNow, Spring, Angular, Bootstrap, Oracle, MySQL, MongoDB, Maven, Jenkins, Docker, Kubernetes, Git, SVN, CVS, AWS, Azure, Google Cloud
2d
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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
2w
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Test Engineer (Python, Java - TS/SCI w/ Polygraph required)
Annapolis Junction, Maryland, United States
$80k-$165k/yr OnsiteFull Time
Red Alpha
Red Alpha: Provides software engineering and data science for defense missions.
2+ YOE2+ years testing experience, strong Python and Java skills, TS/SCI with Polygraph, experience with automated and manual test frameworks, CI/CD integration, performance testing, and geospatial validation.
Python, Java, Selenium, JUnit, JMeter, Gatling, Jira, CI/CD
2w
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Junior Cloud Software Engineer (AI/ML) - TS/SCI w/ Poly
Annapolis Junction, Maryland, United States
$80k-$128k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
4+ YOEUS citizen able to obtain TS/SCI w/ poly; 4+ years software development experience (or Bachelor's); experience with NoSQL (HBase, Accumulo, Big Table), Java/C/C++; cloud and AI/ML experience preferred; test and integration experience.
AI/ML, AWS, HBase, Accumulo, Big Table, NoSQL, Java, C, C++, CKAD
2w
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Junior Cloud Software Engineer (AI/ML) - TS/SCI w/ Poly
Annapolis Junction, Maryland, United States
$80k-$128k/yr OnsiteFull Time
Peraton
Peraton: Provides advanced technology and mission support for government agencies.
4+ YOEUS citizen able to obtain TS/SCI with polygraph; 4+ years software development experience (or bachelor's in CS/related); experience with NoSQL (HBase, Accumulo, Big Table), Java/C/C++; software integration and testing experience; preferred AWS and CKAD certifications.
HBase, Accumulo, Big Table, Java, C, C++, AWS, Kubernetes
1w
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Software Engineer II
Lone Tree or Sparks or Longmont or Hagerstown or Herndon or Englewood
$94k-$130k/yr HybridFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
2+ YOEBachelor's in CS or related,2+ years software development experience,proficiency in C++,Java,Python,knowledge of engineering principles,ability to work in multidisciplinary teams.
C++, Java, Python, C, C#, HTML, Bash, RTOS, AI/ML
2d
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Software Development Engineer
Laurel, Maryland, United States
$100k-$245k/yr HybridFull Time
Johns Hopkins University Applied Physics Laboratory
Johns Hopkins University Applied Physics Laboratory: Conducts research and engineering for national security and space.
2+ YOEBS (required) or MS in CS/CE/EE/Math or related, 2+ years software development, strong knowledge of C++ or Java in Linux/Unix, ability to obtain Interim Secret/Secret clearance, U.S. citizenship.
C++, Java, Linux, Unix
2mo
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Software Engineer 1 (DM)
Hanover, Maryland, United States
OnsiteFull Time
Quevera: Software engineering and cloud solutions for government and defense.
Strong analytics development background; Pig and PySpark; Python, Java, Scala; NiFi; Ansible; agile environment; patch management; must have TS/SCI Poly clearance to apply.
Pig, PySpark, Python, Java, Scala, NiFi, Ansible
2w
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2440AS - Software Engineer I
Aberdeen, Maryland, United States
$75k-$98k/yr OnsiteFull Time
Techximius: Provides specialized IT and engineering services for defense missions.
1+ YOEBachelors in computer science or similar, 1-5 years software programming experience, proficiency in Java/C/C++/Python/JavaScript, experience with backend/microservices/web development, strong communication and documentation skills, current DoW clearance required.
Java, C/C++, Python, JavaScript, Node.js, Vue.js, Windows, Linux, Android, UML
1mo
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Software Engineer
Annapolis Junction, Maryland, United States
$70k-$285k/yr OnsiteFull Time
Athenix Solutions Group: Provides cybersecurity, systems engineering, and training for defense agencies.
0+ YOETS/SCI with Polygraph required. Bachelor’s in CS or related (or equivalent experience). Experience with Linux, Gitlab, C++, Python, Java, JavaScript/Vue.js, Docker, Kubernetes, MongoDB/SQL, and Jira.
Gitlab, vscode, Redhat, CentOS, Rocky, C++, Python, JAVA, Javascript, Vue.js, Docker, Kubernetes, MongoDB, SQL, Jira
2mo
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Software Engineer Level 0
Annapolis Junction, Maryland, United States
$89k-$140k/yr OnsiteFull Time
DCCA
DCCA: Provides IT and engineering solutions for government and defense agencies.
TS/SCI with poly required; strong Java and Python; experience with GitLab/Jira; CI/CD; Agile methods; knowledge of Docker/Kubernetes; RESTful services.
Java, Java SE, Java 8, Java 17, Python, Git, Shell/Bash, Nexus, Maven, JUnit, Eclipse IDE, VS Code, JavaScript/HTML5/CSS3, Jira, GitLab, Docker, Podman, Kubernetes, OpenShift, Spring Boot
1mo
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Jr Software Engineer
Hanover, Maryland, United States
OnsiteFull Time
Fantom Corporation
Fantom Corporation: Provides specialized IT, engineering, and cybersecurity services for federal agencies.
Requires recent MD polygraph clearance and onsite work in Hanover, MD. Bachelor's in CS or equivalent experience. Strong C++, Python; Java, MongoDB/SQL, Docker, Kubernetes, Angular/HTML/JavaScript experience.
C++, Python, Java, MongoDB, SQL, Docker, Kubernetes, Angular, HTML, JavaScript, Vue.js