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Java Python Developer Jobs in Williamsport, MD, US

100+ java python developer jobs from 46 companies hiring in Williamsport, MD, US.

104 jobs- Williamsport • 50 miles
1mo
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Java/ETL Developer - TS/SCI with Polygraph
Herndon, Virginia, United States
$174k-$236k/yr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
8+ YOE8+ years of data engineering/ETL experience; TS/SCI with Polygraph; US citizenship; Bachelor's in Engineering or related field (or equivalent).
Java, XML, JSON, Python, Oracle, MySQL, Tableau, Elasticsearch, ArcGIS, Windows, Linux, Git, GitHub, GitLab, Jenkins, NiFi, Pentaho, FME, SAFE, ETL
1mo
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Java/ETL Developer - TS/SCI with Polygraph
Herndon, Virginia, United States
$174k-$236k/yr OnsiteFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
8+ YOE8+ years of related experience; TS/SCI with Polygraph; Java/ETL, data engineering, ETL, SQL; Bachelor's degree or equivalent; US citizenship.
Java, XML, JSON, Python, Oracle, MySQL, Tableau, Elasticsearch, ArcGIS, Windows, Linux, GitHub, GitLab, Jenkins, NiFi, Pentaho, FME, SAFE
3w
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Senior Application Developer (Java/Angular)
Ashburn, Virginia, United States
HybridFull Time
Dev Technology Group
Dev Technology Group: Provides information technology services to federal government agencies.
7+ YOEBachelor’s degree and 7+ years in Java applications with Spring, Agile, Jira; Oracle/PostgreSQL; unit tests; strong communication; hybrid Ashburn onsite.
Java, Angular, Spring, Spring Boot, AWS, Jira, Git, Bamboo, Jenkins, SonarQube, Docker, Kubernetes, Hibernate, MyBatis, JMS, Python, Kafka, Linux
1mo
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Web Application Developer Senior
Winchester, Virginia, United States
OnsiteFull Time
ECS
ECSNYSE: ASGN: Provides advanced technology and engineering services to government agencies.
2+ YOEBachelor's degree; TS/SCI clearance; 2+ years in AWS/C#/Java/Python; web app development.
AWS, C#, Java, Python
1mo
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Software Developer - Top Secret
Winchester, Virginia, United States
OnsiteFull Time
VMD Corp
VMD Corp: Provides airport security screening and federal IT services.
Develop and maintain software in an Agile/SAFe environment; AWS/C#/Java/Python experience; secure federal systems; strong OO design and version control.
C#, Java, Python, AWS, Git
1w
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Application Software Developer (Full Stack Developer)
Herndon, Virginia, United States
RemoteFull Time
VivSoft Technologies
VivSoft Technologies: Delivers cloud, DevSecOps, and AI solutions to federal agencies
10+ YOEExperienced full stack developer with 10+ years in software development; 5+ years in DevSecOps and cloud-hosted apps; strong Java, Python, AWS, React/Angular; CI/CD with Jenkins, GitHub, Artifactory; Jira/Confluence; API, databases (MySQL, PostgreSQL).
Java, Python, AWS, React, Angular, Jenkins, GitHub, Artifactory, Jira, Confluence, MySQL, PostgreSQL, JBoss, Spark, Vault
2w
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Data Engineer
Carlsbad or Germantown or Englewood or Tempe
$136k-$253k/yr OnsiteFull Time
Viasat
ViasatNASDAQ: VSAT: Provides global satellite broadband and secure networking communication services.
5+ YOE5+ years software development with Java/Scala/Python/C/C++. SQL knowledge. Linux, Docker, Git/CI-CD. Cloud (AWS/GCP/Azure). BS in a related field.
Java, Scala, Python, C/C++, Linux, Docker, Git, CI/CD, PostgreSQL, MySQL
2w
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Applications Developer (Full Stack Developer - Senior)
Herndon, Virginia, United States
OnsiteFull Time
Ardent Principles
Ardent Principles: Provides specialized technology and program management services to government agencies.
4+ YOESenior-level developer with active TS/SCI with Full Scope Polygraph; 4+ years web app experience; strong Python/Java/JS/C# OO skills; cloud and Linux experience;Bachelor's degree or 11 years experience without degree.
Angular, React, JavaScript, Python, Java, C#, Linux, AWS, Azure, Oracle Cloud, Docker, Podman, Jira, Confluence, GitHub
2mo
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Software Engineer
Vienna or Herndon
HybridFull Time
NT Concepts
NT Concepts: Provides AI and data solutions for national security agencies.
5+ YOE5+ years in software development with Python/Java/C#, ML with PyTorch; API design; cloud (AWS/GCP/Azure); Linux; Git; microservices; containers (Docker/OpenShift); Kubernetes; SAFe/Agile experience; TS/SCI clearance preferred.
Python, Java, C#, Go, PyTorch, APIs, AWS, GCP, Azure, Linux, Git, Docker, OpenShift, Kubernetes, REST APIs
1w
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GIS Developer Analyst (Key Personnel)
Washington or Albuquerque or Germantown or Denver
HybridFull Time
Data Systems Analysts
Data Systems Analysts: Provides IT and cybersecurity solutions for government agencies.
3+ YOEBachelor's degree in GIS/Geography/CS or related field; 3–5 years GIS development; Python/JavaScript/C#/Java; geospatial analysis; DOE Q clearance; emergency management experience preferred.
ArcGIS Pro, ArcGIS Online, Experience Builder, Survey123, Python, JavaScript, ArcPy, ArcGIS SDKs, C#, Java
2w
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Data Engineer
Carlsbad or Germantown or Englewood or Tempe
$141k-$222k/yr OnsiteFull Time
Viasat
ViasatNASDAQ: VSAT: Provider of global satellite-based connectivity and secure communication solutions.
5+ YOE5+ years software development with Java/Scala/Python/C/C++, SQL DBMS, Linux, Docker, Git/CI/CD; cloud familiarity (AWS/GCP/Azure); strong analytical skills; BS in a related field; US citizenship required; travel up to 10%
Java, Scala, Python, C, C++, PostgreSQL, MySQL, Oracle, Linux, Docker, Git, CI/CD, AWS, GCP, Azure, Kafka, Spark
6d
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Senior Software Engineer - APIs
Ashburn, Virginia, United States
$120k-$145k/yr RemoteFull Time
Unacast
Unacast: Provides human mobility analytics and global location intelligence solutions.
5+ YOE5+ years Java 8+ with Spring; AWS; SQL; Snowflake; Scala/Python; web services; GA/DG experience; English fluency.
Java, Spring Framework, AWS, SQL, Snowflake, Scala, Python, JSON, GeoJSON, Git, Unit testing, Docker, Kubernetes
4w
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Senior Software Engineer (Big Data)
Herndon, Virginia, United States
OnsiteFull Time
KDA Consulting
KDA Consulting: Provides IT engineering and cloud services for intelligence missions.
TS/SCI clearance with polygraph preferred; BS in CS/Engineering or related field; strong full stack development; big data tech (Hadoop, Spark, Kafka); Java/Python/C#; APIs and microservices; strong problem-solving; able to work independently (IC)
Java, Python, C#, Hadoop, Apache Spark, Kafka, APIs, Microservices, REST
2w
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Jr. Application Developer
Herndon, Virginia, United States
OnsiteFull Time
VTG
VTG: Provides force modernization and digital transformation for defense agencies.
4+ YOEActive TS/SCI clearance with Poly; 4-6 years web app experience; Angular/React/JavaScript; Linux; cloud services (AWS, Azure, Oracle Cloud); Java, Python, JavaScript, CSharp; microservices with Docker/Podman; strong UI/UX and Agile experience.
Angular, React, JavaScript, Java, Python, CSharp, Linux, AWS, Azure, Oracle Cloud, Docker, Podman, Containerization
6d
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Backend Software Engineer
Gaithersburg or Alexandria or Chantilly or St. Louis or Tucson
OnsiteFull Time
Noetic Strategies
Noetic Strategies: Provides cybersecurity, software development, and IT services to government agencies.
8+ YOEUS citizen; TS/SCI with poly; BS in CS/SE with 8–12 yrs (MS with 6–10); Java or Python; REST APIs; SQL; Linux; ability to work independently.
Java, Python, REST, SQL, Linux, Apache Airflow, Spring Boot, Django, GitLab, Jenkins, Docker, OpenShift, AWS, Azure, Agile
1mo
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Software Engineer SME
Herndon, Virginia, United States
$50k-$290k/yr OnsiteFull Time
The Swift Group: Providing engineering and cybersecurity services for national security missions.
10+ YOE10+ years backend software/platform experience; strong Java, Ansible/Python, Postgres/MySQL/MariaDB, Linux, AWS; microservices and RESTful APIs; cloud deployment; containerization; Git workflows; TS/SCI with Poly clearance required; BSCS or equivalent.
Java, Ansible, Python, PostgreSQL, MySQL, MariaDB, Linux, AWS, Git, GitLab, GitHub
1d
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CUAS SW Engineer
United States or Summit Point
$88k-$155k/yr RemoteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
5+ YOE5+ years' software engineering experience; Bachelor's in CS/engineering/math or related field or equivalent; active Secret clearance; Java; APIs; AI/ML; Python/C++; Docker; Git; Agile tooling.
Java, APIs, Ansible, Docker, React, Git, CMake, Confluence, JIRA, Python, C++, AI/ML
5d
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Software Engineer SME (TS/SCI with Poly Required)
Dulles, Virginia, United States
$187k-$318k/yr OnsiteFull Time
GCI
GCI: Engineering and analytics solutions for national security missions.
15+ YOE15+ years in software engineering; TS/SCI with poly; US citizenship; BA/BS; experience with Java/Spring, Python, React, databases, AWS.
Java, Spring, Spring Boot, Spring Security, Python, JavaScript, TypeScript, React, Elasticsearch, PostgreSQL, MySQL, PL/SQL, AWS, Git, Jenkins, CI/CD, REST APIs, MQ, Service Bus
1mo
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Staff Engineer Software
Dulles, Virginia, United States
OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
12+ YOEBachelor's with 12 years or Master 10 years or PhD 7 years; active DoD Top Secret clearance; strong experience in C/C++, Java, Python; Docker/Kubernetes; Linux; CI/CD; Agile; prior leadership.
C/C++, Java, Python, Docker, Kubernetes, Linux, Jenkins, GitLab
1mo
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Software Engineer Lead
Herndon or Aurora
$135k-$216k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
12+ YOEBachelor’s degree in Computer Science, Engineering, or related field; minimum 12 years of experience; TS/SCI with clearance eligibility; proficiency in Java, C++, Python; Jira and Confluence experience; leadership of technical teams; experience with DevSecOps, cloud, and distributed systems.
Java, C++, Python, Jira, Confluence, DevSecOps, Docker, Kubernetes, Cloud architectures (AWS, Azure)
2w
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Junior Palantir / Maven Product Engineer
Herndon, Virginia, United States
OnsiteFull Time
NetCentrics
NetCentrics: Secures government infrastructure through cybersecurity and IT services.
3+ YOEBachelor’s degree in CS/Engineering/Data Science or related field; 1–3 years software/data engineering; Python/Java/Go/TypeScript; cloud infra AWS/Azure/Kubernetes; secure environments; Secret clearance; TS/SCI eligibility.
Python, Java, Go, TypeScript, AWS, Azure, Kubernetes
2w
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Staff Software Developer (TS/SCI)
Herndon, Virginia, United States
$92k-$195k/yr OnsiteFull Time
Maxar Intelligence
Maxar Intelligence: Providing satellite imagery and geospatial intelligence for global security.
5+ YOEUS citizen with TS/SCI clearance and CI poly; BS in CS/Software Eng; 5+ years backend software dev; Java/Python/JS; REST APIs with Spring Boot; Docker/Kubernetes/OpenShift; Jenkins/Git/Helm; Linux scripting; on-site in Herndon, VA.
Java, Python, JavaScript, Spring Boot, Docker, Kubernetes, OpenShift, Rancher, Jenkins, Git, Bitbucket, Gradle, Bash, Shell, OpenSearch, Elasticsearch, Keycloak, Fluent Bit, Cesium, PostgreSQL
2mo
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Software Engineer- AI
Herndon or Cincinnati or North Carolina or Georgia or Texas or New Jersey or Pennsylvania or Illinois or District of Columbia or Maryland or Ohio or Florida or South Carolina or Colorado or Indiana
HybridFull Time
Exostar
Exostar: Secure collaboration and identity management for highly regulated industries.
2+ YOE2+ years hands-on software engineering; shipping full systems; proficient in Angular/TypeScript, .NET/C#, Python, Java; 1+ year cloud-native (Azure); comfortable across stack; regulated environments experience.
Angular, TypeScript, .NET/C#, Python, Terraform, Bicep, Azure Gov, CI/CD
1w
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Senior Engineer-5
Bethesda, Maryland, United States
$105k-$215k/yr HybridFull Time
GEICO
GEICO: Provides vehicle and property insurance services to consumers.
4+ YOE4+ years software development; strong experience with C#, Java, TypeScript, JavaScript, Python, or Golang; microservices architecture; cloud (AWS, GCP, Azure); DevOps; security; CI/CD; containers (Docker, Kubernetes).
Python, C#, TypeScript, JavaScript, Java, Golang, Docker, Kubernetes, Terraform, Azure, AWS, GCP
1w
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Gen AI Developer
Ashburn or United States
$115k-$252k/yr HybridFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
10+ YOE5+ years full stack dev with Python/JS, strong AI/ML, cloud (AWS/Google), REST APIs; US citizenship; hybrid work in Ashburn, VA.
React, Angular, Python, Java, JavaScript, TypeScript, SQL, NoSQL, AWS, Google Cloud, REST APIs, CI/CD, DevSecOps
2w
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Senior Full Stack Developer
Herndon, Virginia, United States
OnsiteFull Time
Karsun Solutions
Karsun Solutions: Provider of IT modernization and software development for government agencies.
10+ YOESenior full stack developer with 10+ years of software development, AI/ML exposure, and ability to lead modernization efforts.
Java, Python, Node.js, JSP, Tomcat, jQuery, SQL, ETL, APIs, CI/CD, Cloud
1mo
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Software Engineer (Salesforce)
Sterling, Virginia, United States
OnsiteFull Time
Nightwing
Nightwing: Provides advanced cyber and intelligence solutions for national security.
5+ YOE5+ years Salesforce development, full-stack, AWS DevOps, Kubernetes, CI/CD, GitHub, Health Cloud; TS/SCI with poly required.
Salesforce, Apex, Visualforce, JavaScript, Python, Java, AWS, Kubernetes, GitHub, CI/CD, Serverless, Health Cloud
1w
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AI Full Stack Engineer – Agentic Systems & Ontology
Bethesda or Grand Prairie or King of Prussia or Littleton or Moorestown or Orlando
$109k-$217k/yr RemoteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Full-stack development with Python and JS frameworks; knowledge graphs and ontologies; LLM/GenAI experience; cloud and on-prem; US citizenship; degree in CS/IT/Engineering/AI/ML or related.
Python, Java, C++, Go, JavaScript, React.js, Angular, REST, OpenAPI, JSON-Schema, GitOps, Cloud, AWS, RDS, PostgreSQL, Bedrock, EC2, S3, Knowledge Graphs, Ontologies, KG tools, Pydantic AI, LangChain, LangGraph, Terraform, Ansible, CI/CD, GitLab, Jenkins, Kubernetes, OpenShift, Vector Databases, Semantic Search, RDF, OWL, SPARQL, Ontop
17h
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Software Developer in Test (SDET)
Ashburn, Virginia, United States
RemoteFull Time
Syms Strategic Group
Syms Strategic Group: Provides IT and professional services to federal government agencies.
10+ YOEStrong programming in C#, Java, or Python; experience in software testing; familiar with SDLC/Agile; US citizenship and Public Trust clearance; remote work.
Selenium, TestNG, JUnit, QTP, LoadRunner, GitHub Actions, JIRA, SQL, JMeter, Gatling
2mo
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Machine Learning Engineer
Herndon, -, United States
OnsiteFull Time
J5 Consulting
J5 Consulting: Provides cybersecurity and cloud engineering services for government agencies.
Experienced ML engineer with SQL/ETL, APIs, Python/Java/Scala, AWS, Hadoop, data visualization, and ML/AI tools experience.
SQL, Python, Java, Scala, ETL, APIs, AWS, Hadoop, Tableau, Bluescape, SharePoint, Tableau
3w
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 Platform Engineer Intern - Hybrid
Herndon, Virginia, United States
HybridInternship
ATPCO
ATPCO: Global repository for airline pricing and merchandising data.
0+ YOEPursuing a Bachelor’s or Master’s in CS/IT or related field; strong IAM knowledge; experience with Microsoft Entra ID, Azure B2C, or AWS IAM; scripting in Python/Java/Go.
Microsoft Entra ID, Azure B2C, AWS IAM, Python, Java, Go, GitHub, Terraform, PowerShell
1mo
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Systems Engineer
Fairfax or Ashburn
HybridFull Time
Vastly AI
Vastly AI: Provider of custom AI, machine learning, and IT solutions.
Bachelor's degree in a technical field; experience with software requirements, design, and Agile; strong communication; eligibility for public trust clearance.
C++, Java, Python, RHEL
1mo
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Software Engineer
Chantilly or St. Louis or Gaithersburg or Denver
OnsiteFull Time
Reinventing Geospatial
Reinventing Geospatial: Geospatial software and AI solutions for national security.
6+ YOESenior software engineer with 6+ years of experience; strong full-stack skills; cloud experience; DevSecOps focus; security clearance.
Python, Java, JavaScript, HTML, CSS, REST APIs, React, Angular, Vue.js, Node.js, Django, Flask, Docker, Kubernetes, AWS GovCloud, C2S, Azure, MySQL, PostgreSQL, SQL Server, Git, Jenkins, SonarQube, Nexus, Terraform, Keycloak, Vault, ArcGIS, OpenSearch, Elasticsearch
1w
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Mid-level Full Stack Software Engineer
Herndon or Westminster
$125k-$145k/yr OnsiteFull Time
Vantor
Vantor: Providing AI-powered spatial intelligence and high-resolution Earth observation.
8+ YOEUS citizen with TS/SCI poly; 8+ years in frontend and backend development, REST APIs, databases; able to work with distributed teams.
React, Angular, Vue, Python, Java, JavaScript, Node.js, REST, SQL, NoSQL, Linux, Kubernetes, Spark, Hadoop, Kafka, NiFi, Airflow, OpenStack, AWS, Azure, GCP, CI/CD
1mo
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SLCM-N Modeling & Simulation Engineer
Rockville, Maryland, United States
$97k-$165k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
4+ YOEBachelor’s degree and 4+ years experience; proficiency in C++, Python, Java, MATLAB; experience with simulation tools; systems engineering; IT enterprise knowledge; strong collaboration and documentation skills.
C++, Python, Java, MATLAB, Simulink
3w
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Intern- Software Engineer
Herndon, Virginia, United States
$25/hr HybridInternship
Vbrick
Vbrick: Secure enterprise video platform for live and on-demand streaming.
0+ YOEPursuing a Bachelor's degree in Computer Science or Engineering; strong programming skills; knowledge of databases; AI/ML fundamentals; good communication; eager to learn.
Java, Python, JavaScript, C#, SQL, NoSQL, HTML, CSS, GitHub Copilot, ChatGPT, Claude
2mo
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Eng Sr Prin II - SW
Herndon, Virginia, United States
$147k-$249k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Develops and manufactures advanced defense and aerospace systems.
16+ YOESenior software developer with cloud, DevOps, and full-stack experience; strong Java/C#, React/Node.js, and automation skills.
AWS, Azure, Google Cloud, Oracle, Jira, GitHub, Jenkins, Python, PowerShell, Java, C#, TypeScript, React, Node.js, .NET
2w
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Full-Stack Developer Intern
Gaithersburg, Maryland, United States
OnsiteInternship
Diaconia
Diaconia: Provides secure IT modernization and engineering for government agencies.
0+ YOECurrently enrolled in a Bachelor's or Master's program in CS/Software Engineering or related field; GPA 3.2+, proficiency in JavaScript/TypeScript, front-end framework (React/Angular/Vue), RESTful APIs, relational DB, Git; strong problem-solving and communication.
JavaScript, TypeScript, React, Angular, Vue, Node.js, Python, Java, SQL, Git, Docker, Kubernetes, AWS, Azure, Google Cloud, GraphQL, REST
1mo
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Junior Software Engineer
Ashburn, Virginia, United States
OnsiteFull Time
Cardinal Technology Systems
Cardinal Technology Systems: Provides cybersecurity and IT solutions to government agencies.
3+ YOEBachelor’s degree required; 3+ years experience; CBP suitability eligibility; databases, web apps, and interfaces; strong communication.
Python, SQL, Java
1mo
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Senior Software Engineer
Gaithersburg, Maryland, United States
OnsiteFull Time
Chenega Corporation
Chenega Corporation: Provides professional government, defense, and facility support services.
8+ YOEBachelor’s or Master’s degree in CS/Engineering with 6+ years (Master’s) or 8+ years (Bachelor’s); TS/SCI clearance; strong OO programming, REST, SQL, Linux; AWS, Agile.
Java, Python, REST, SQL, Linux, Docker, OpenShift, Spring Boot, PostgreSQL, Tomcat, Maven, AWS, GitLab CI/CD, JavaScript, Front-end frameworks

HiringCafe market data

Java Python Developer Jobs market signals in Williamsport, MD, US

These signals come from live HiringCafe job inventory, not a static article. Use them to compare the market, then open listings above to apply directly.

Open jobs
100+
Hiring companies
46
Fresh sample
55% new in 30d
Salary visibility
53% show pay

Companies appearing in this market

ViasatBAE SystemsCACIECSGDITLockheed MartinNorthrop GrummanPeraton

Work location mix in visible results

Onsite: 50Hybrid: 16Remote: 8