38 java backend developer jobs at 26 companies in Hanover, PA

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
3w
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Backend Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
Set of X
Set of X: Provides specialized engineering services for U.S. national security missions.
12+ YOESenior backend developer with Java Spring Boot microservice experience, familiarity with SQL/NoSQL databases, containerization (Docker, Kubernetes, Rancher), CI/CD (GitLab CI, Jenkins), Git, Atlassian tools, automated testing, and TS/SCI clearance with polygraph.
Java, Spring Boot, PostGres, MySQL, Elasticsearch, MongoDB, GitLab CI, Jenkins, Git, Jira, Confluence, Docker, Kubernetes, Rancher
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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Mid-Level Back End Developer
Lackland AFB or Fort Meade
OnsiteFull Time
Titan Technologies
Titan Technologies: Provides IT solutions and services to government agencies.
7+ YOESeven years of software development experience; DoD TS/SCI preferred; 5+ years with multiple tech including Python, Java, Docker, OpenStack, Ansible, Terraform, Kubernetes; backend/REST API focus; CI/CD and DevSecOps.
Python, Java, Docker, OpenStack, Ansible, Packer, Terraform, Kubernetes, Red Hat Enterprise Linux, PostgreSQL, REST, GitLab, Jenkins, Maven, Puppet, Chef, AWS, Jira
2mo
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Backend Software Engineer
Gaithersburg, Maryland, United States
$108k-$195k/yr OnsiteFull Time
teKnoluxion
teKnoluxion: Providing technical engineering and cloud services to the intelligence community.
6+ YOEActive Top Secret/SCI clearance with CI poly eligibility; bachelor’s (required) or master’s in CS or related; 6+ years experience (varies by degree); strong Java or Python, SQL, REST API, Linux skills.
Java, Python, SQL, Linux, RESTful APIs, Apache Airflow, PostGIS, Spring Boot, Django, GitLab, Jenkins, Docker, OpenShift, Kubernetes, AWS, Azure
2w
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Back End Developer
Annapolis Junction, Maryland, United States
$129k-$206k/yr OnsiteFull Time
Quevera
Quevera: Software engineering and cloud solutions for government and defense.
7+ YOEActive TS/SCI with Polygraph, 7+ years technical experience, Bachelor's in Computer Science or related (or +4 years experience in lieu), strong Python/Java/C++, PostgreSQL/SQL, Git, AWS, and Agile experience.
Python, Java, C++, PostgreSQL, SQL, Git, Amazon Web Services, API Gateway, Lambda, Jira, Confluence
1mo
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Software Engineer III - Front End/ Back End
Columbia, Maryland, United States
$110k-$130k/yr RemoteFull Time
Ad Hoc
Ad Hoc: Builds user-centered digital services and platforms for government agencies.
8+ YOE8+ years software engineering experience (or equivalent), strong Java and Spring Boot backend skills, RESTful API and microservices experience, relational DB experience, Git and CI/CD familiarity, US citizenship and DHS Public Trust eligibility.
Java, Spring Boot, RESTful APIs, Oracle, PostgreSQL, Microsoft SQL Server, Git, Docker, Kubernetes, EKS, Jenkins, GitHub, SonarQube, Splunk, Kafka, New Relic, Angular, React, C#, .NET, VB.NET, C++, Tomcat, Oracle SQL Developer, AWS
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
1d
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Staff Software Engineer (Backend) - Billing Platform *HYBRID*
Palo Alto or Falls Church or Frisco or Washington or Baltimore or Dallas or Bethesda or Fort Worth
$110k-$230k/yr HybridFull Time
GEICO
GEICO: Provides vehicle and property insurance services to consumers.
8+ YOE8+ years software development experience with large-scale systems; proficiency in Java/Kotlin/Golang, SQL/NoSQL, Kafka, Spark, Airflow, cloud and DevOps practices; strong communication and system design skills.
Java, Kotlin, Golang, SQL, NoSQL, Kafka, Spark, Airflow
14h
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Software Engineer 1 - Back-End/DevOps
Annapolis Junction, Maryland, United States
$130k-$270k/yr OnsiteFull Time
Captivation Software
Captivation Software: Provides specialized software engineering for the intelligence and defense communities.
7+ YOEMust hold Top Secret/SCI with favorable Polygraph, 7+ years SWE experience, bachelor’s in CS or related (or 4 years substitution), experience with Spring Boot/Java, AWS, Terraform/CloudFormation, CI/CD, monitoring and testing.
Spring Boot, Java, AWS, ECS, Lambda, RDS, S3, Terraform, CloudFormation, CI/CD, CloudWatch, Prometheus, ELK
1mo
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Senior Java Developer (Active TS/SCI with Poly Required - (SIGN-ON BONUS UP TO $30,000)
Annapolis Junction, Maryland, United States
$164k-$207k/yr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
5+ YOEActive TS/SCI with poly; Bachelor's in a technical field; 5+ years software development; 4+ years Java; microservices, Spring, Docker, Kubernetes; strong backend architecture.
Java, Kotlin, Spring Boot, Spring Cloud, Spring Data, AWS, Docker, Kubernetes, Linux, Kafka, Cassandra, DynamoDB, GitLab CI/CD, Maven, Node.js, SonarQube, IntelliJ, VSCode, ReactJS
2mo
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SOFTWARE ENGINEER - Back End/AWS - 7+ yrs of Experience (PARTIAL TELEWORK) - TS/SCI w/Poly clearance is required - BT
Annapolis Junction, Maryland, United States
$160k-$165k/yr HybridFull Time
Halogen Engineering Group
Halogen Engineering Group: Provides specialized engineering, cybersecurity, and program management services.
7+ YOE7+ years of software engineering experience with back-end/AWS, Agile, QA, and documentation credentials.
AWS, Git, Java, C++, Python, PostgreSQL, SQL, Jira, Confluence
1w
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Software Engineer
Annapolis Junction, Maryland, United States
$115k-$251k/yr OnsiteFull Time
Vibrint
Vibrint: Provides mission-critical systems and data analysis for national security.
Experience with backend or cloud-native development (Java, Python, C++, Go), containerization (Kubernetes, Docker), AWS, CI/CD, and distributed systems; active TS/SCI with polygraph and U.S. citizenship required.
Java, Python, C++, Go, Spring Boot, REST APIs, AWS, Kubernetes, Docker, Terraform, SQL, NoSQL, Elasticsearch/OpenSearch, Git, Linux, CI/CD, AI/ML, Big data frameworks
2mo
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Software Engineer
Baltimore or Annapolis
HybridFull Time
ExistX
ExistX: Transitions national security research into operational software and systems.
5+ YOE5+ years enterprise software development; BS in Computer Science or related field; backend languages Java/C/C++/Rust/Python; experience with scalable systems; strong documentation; cryptography or cloud knowledge preferred.
Java, C/C++, Rust, Python, Cryptol, Haskell, Docker, Kubernetes, AWS, Azure
3d
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Senior Software Developer
Laurel, Maryland, United States
$85k-$117k/yr RemoteFull Time
Syms Strategic Group
Syms Strategic Group: Provides IT and professional services to federal government agencies.
8+ YOE8+ years backend-focused software development experience (Java and/or NodeJS), proven RESTful API design for healthcare/EDI data, Angular frontend experience, cloud (AWS/Azure), Git/GitHub, unit/integration testing, and U.S. citizenship with Public Trust eligibility.
Java, NodeJS, Angular, C#, .NET, AWS, Azure, API Gateway, Lambda, S3, CloudWatch, Docker, ECS, EKS, Git, GitHub, JUnit, Jest, Microsoft Teams, JIRA, XML, JSON, Electronic Data Interchange X.12 (EDI)
2w
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Software Engineer Level 1
Fort Meade, Maryland, United States
$160k-$180k/yr OnsiteFull Time
Markon Solutions
Markon Solutions: Provides professional program and engineering services to federal agencies.
7+ YOEActive TS/SCI with polygraph, Bachelor’s degree, 7+ years software engineering experience, Java and backend development, RESTful APIs, Agile, Git, Jira, Confluence, IntelliJ or Eclipse, strong troubleshooting and communication skills.
Java, Git, Jira, Confluence, IntelliJ IDEA, Eclipse IDE
1w
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Software Engineer 3 (FST - 121)
Annapolis Junction, Maryland, United States
OnsiteFull Time
SageCor Solutions
SageCor Solutions: Provides engineering services for the intelligence community.
20+ YOEActive TS/SCI with polygraph, 20 years SWE experience, Bachelor's in Computer Science (or 4 years additional experience), strong backend/full-stack development with Java, JavaScript, cloud and distributed systems.
AWS, Docker, Kubernetes, EKS, Rancher, Tomcat, Spring, JMS, Java, JavaScript, mongo DB, Elasticsearch, Postgres, Mysql, SpringBoot, REST, Cockroach DB, Kibana, Alfresco, Node, Svelt, React, Angular, Confluence, Jira, Maven, Git
1w
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Software Engineer 2
Annapolis Junction, Maryland, United States
$200k-$230k/yr OnsiteFull Time
RealmOne
RealmOne: Provides advanced technology services for national security agencies.
14+ YOE14 years software engineering experience (or BS + experience substitution), bachelor’s in computer science or related (or 4 years extra SWE experience), active security clearance with polygraph, experience with Java, web frameworks, containers, Linux, Git, and backend/frontend development.
Java, React JS, Node JS, AWS, Docker, MongoDB, Git, Kira, Confluence, Atlassian Products, Linux Command Line, Spring Boot, JavaScript, ReactJS, Apache Kafka, Apache Nifi, Docker Compose, Maven, SQL
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 Lead
Herndon or Columbia
OnsiteFull Time
Freedom Technology Solutions Group
Freedom Technology Solutions Group: Provides geospatial and software engineering solutions for national security agencies.
4-6 years backend and frontend development; 6-8 years AWS/Linux; 2-3 years AI/ML; strong Python/Java; Agile; SQL/NoSQL; cloud and microservices; security clearance with polygraph; Docker/containers.
Python, Java, Angular, AWS, Linux, Docker, Kubernetes, ElasticSearch, Solr/Lucene, OpenSearch, SQL, NoSQL, Jira, Confluence, GitHub, ETL, PyTorch, Keras, TensorFlow, Tableau, Pandas, D3.js, Gensim, spaCy, NLTK, Stanford CoreNLP, OCR, BERT, NER
2mo
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Software Engineer | Secure AI
Columbia, Maryland, United States
OnsiteFull Time
Bestgate Engineering
Bestgate Engineering: Software and systems engineering firm for government clients.
Strong Java backend experience (Spring/Guava), API and microservice design, applied AI familiarity (prompt engineering, RAG), Git/Maven/Linux workflows, and eligibility for U.S. government security clearance.
Java, Spring, Guava, Model Context Protocol (MCP), Retrieval-Augmented Generation, LangChain4j, LangChain, LlamaIndex, Git, Nexus, Maven, Linux, Spring AI, vector databases, NiFi, Kafka, AWS, Kubernetes, SQL, NoSQL, Python, Big Data