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Java Python Developer Jobs in Leesburg, VA, US
1,300+ java python developer jobs from 300+ companies hiring in Leesburg, VA, US.
1mo
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Signals Software Engineer
Annapolis Junction, Maryland, United States
$63-$77/hr OnsiteFull Time
4+ YOEExperience in RF signal processing software (detectors, demodulators, protocol processors); translate requirements to design; develop in C++/Java on Linux; RF concepts; TS/SCI clearance with polygraph.
C++, Java, Python, MATLAB, SIMULINK, Eclipse, Google Protocol Buffers, Git, Subversion, GNU Radio
1w
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Cloud Software Engineer CSWE2 - 27151
Hanover, Maryland, United States
OnsiteFull Time
Experience with Devops, Elastic Search, NiFi, Python, Java/Spring Boot, Angular.
Devops, Elastic Search, NiFi, Python, Java/Spring Boot, Angular
1mo
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AI Solution Engineer-Platform
Huntsville or Washington
HybridFull Time
4+ YOEProficient in Python/SQL with back-end language (Java/Scala/Go); experience with data pipelines, ML production, cloud analytics, REST APIs, graph DBs; CI/CD, DevOps, and containerization.
Python, SQL, Java, Scala, Go, PostgreSQL, Snowflake, Neo4j, Amazon Neptune, Git, Docker, Kubernetes, Terraform, CloudFormation, Pulumi, GitHub Actions, GitLab CI, Jenkins, CI/CD, Docker/Kubernetes, infrastructure-as-code, unit testing, REST APIs, Plotly, D3.js, Terraform, Pulumi, AWS GovCloud
5d
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Test Automation Engineer (ACWS)
Arlington or United States
RemoteFull Time
3+ YOE3-5 years QA/test automation; Tosca Tricentis and FitNesse expertise; scripting in Java/Python/C#; Git; SDLC/Agile; DoD Secret clearance; US citizenship; BS degree in a relevant field.
FitNesse, Tosca Tricentis, Java, Python, C#, Git
2w
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Forward Deployed Engineer
Austin or Remote or Reston
HybridFull Time
6+ YOE6+ years in software/data/ML; degree in CS/Engineering/Math/Physics/Data Science; hands-on with AI/ML and LLM frameworks; production systems; multi-cloud; containerization; Python/Java/TypeScript; travel 25–75%; client collaboration.
PyTorch, Hugging Face, LangChain, vLLM, Docker, Kubernetes, Python, Java, TypeScript
2w
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Forward Deployed Engineer
Reston, Virginia, United States
HybridFull Time
5+ YOEBachelor’s degree in CS/Engineering or equivalent; 5+ years in software engineering, cloud architecture, and deployments; strong cloud experience (GCP/AWS/Azure); full-stack proficiency (Python, TypeScript, Go, Rust, or Java); Docker/Kubernetes; US Citizen.
Kubernetes, GKE, Docker, Python, TypeScript, Go, Rust, Java, Google Cloud, AWS, Azure
2mo
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Senior Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
14+ YOESenior software engineer with cloud architecture, data visualization, Python/Java, and leadership experience; TS/SCI clearance with polygraph; Bachelor's degree in CS or related field plus 14 years of experience; experience with MySQL/PostgreSQL and web-based server applications.
Python, Java, MySQL, PostgreSQL, Linux, Web-based server applications, Data visualization
2w
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Agile Developer 1
Annapolis Junction, Maryland, United States
OnsiteFull Time
3+ YOEActive TS/SCI with Full Scope Polygraph; Bachelor's or higher; 3 years of relevant experience (or Master’s +1); Java Spring Boot, AWS, CI/CD experience.
Java, Spring Boot, Python, AWS, REST, Maven, GitLab, GitOps, Kubernetes, Docker, Ansible, Lambda, Step Functions, S3, DynamoDB
1mo
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Software Engineer (Mid level - Clearance Required) - (US - Remote)
Reston or United States
$81k-$139k/yr RemoteFull Time
3+ YOEActive Top Secret clearance; 3+ years software engineering; US citizenship; remote US with occasional travel; experience with Java/Python/JavaScript; Agile; DoD/government experience.
Java, Python, C#, JavaScript, React, Angular, AWS, Azure, GovCloud, CI/CD, DevOps, APIs, Databases
2w
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Junior Palantir / Maven Product Engineer
Herndon, Virginia, United States
OnsiteFull Time
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
1w
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Software Engineer 3 - Linux/Bash/Python/Apache Airflow/SQL/Jupyter Notebook/NumPy/JSON
Annapolis Junction, Maryland, United States
$130k-$270k/yr OnsiteAll Commitments Available
9+ YOESenior software engineer with dataflow design, Spark-based processing, and data governance experience; security clearance required; US citizen.
Linux, Bash, Python, Java, Apache Airflow, Apache Spark, SQL, MySQL, MariaDB, PostgreSQL, Jupyter Notebook, pandas, NumPy, Parquet, JSON, CSV, XML, Git, SLURM, Jira, Confluence
2w
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Staff Software Developer (TS/SCI)
Herndon, Virginia, United States
$92k-$195k/yr OnsiteFull Time
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
2w
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AI/ML Software Developer - Top Secret
Tysons, Virginia, United States
$90k-$135k/yr OnsiteFull Time
2+ YOEActive Top Secret clearance; Bachelor’s in computer science or related field; minimum 2 years of relevant experience; JavaScript/Java/Python and OO programming; strong data structures and algorithms; experience with LLM tools.
JavaScript, Java, Python, Object-Oriented Programming, LLM tools
1mo
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Application Developer / Software Engineer
Washington or Fairfax
HybridFull Time
4+ YOEMid-level application developer with 4–6 years of experience, SDLC expertise, on-site or hybrid work in the DMV area, strong skills in web and enterprise app tech; AI/ML preferred.
ASP.NET, C#, Python, Java, C/C++, HTML, XHTML, XML, XSLT, CSS, JavaScript, SQL, SQL Server, Oracle, MarkLogic, Visual Studio, Git, CI/CD pipelines, .NET Framework, SharePoint, Microsoft Power Platform, IIS, SQL Reporting, ETL, AI, ML
1mo
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Data Engineer (AWS, Azure, GCP)
Reston, Virginia, United States
HybridFull Time
Experience delivering solutions on a major cloud platform; strong data engineering and pipeline development; SQL, Python/Java; knowledge of cloud services.
AWS, Azure, GCP, SQL, Python, Java, R, C#, C++, Docker, Kubernetes, Git, Spark, Databricks, Kafka, Kinesis, Hadoop, Lambda, EMR, Snowflake, Redshift, Aurora, Presto, BigQuery, Oracle, Jenkins
1mo
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Software Developer
Washington, District of Columbia, United States
$65k-$102k/yr HybridFull Time
7+ YOEBachelor's in computer science/engineering or related field; 7+ years experience; 3+ years programming/data management; proficient in Python, Power BI, SQL, Office; ability to obtain Interim Secret clearance; US citizen.
Python, Power BI, Microsoft Office, SQL, C, C#, Java
5d
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Software Engineer Full Stack & Application Development II (Full Time) – United States
San Jose or New York or Boston or Knoxville or Austin or Milpitas or Alpharetta or Raleigh (RTP) or Maynard or Fulton or Dallas or Atlanta or Hillsboro
HybridFull Time
0+ YOEBackend in Python/C++/Java; frontend JS/TS; REST/GraphQL/gRPC; SQL/NoSQL; cloud familiarity (AWS/Azure/GCP).
Python, C++, Java, JavaScript, TypeScript, REST, GraphQL, gRPC, SQL, NoSQL, AWS, Azure, GCP, Docker, Kubernetes, Terraform, Ansible, CloudFormation, GitHub Actions, Jenkins, CircleCI, Grafana, Prometheus, Splunk, React, Angular, Vue
2mo
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Full Stack Software Engineer (TS/SCI with CI poly)
Springfield, Virginia, United States
$113k-$188k/yr OnsiteFull Time
5+ YOEUS citizen with TS/SCI clearance and CI poly; BS in Computer Science or related field; 5+ years of software development experience; proficient in Java, Python or C++; Linux; cloud architectures (AWS); NoSQL (Elastic, MongoDB); Git, Eclipse, Maven.
Java, Python, C++, Linux, AWS, NoSQL (Elastic, MongoDB), Git, Eclipse, Maven
1mo
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Forward Deployment Software Engineer
Reston, Virginia, United States
$200k-$288k/yr HybridFull Time
7+ YOE7+ years in distributed systems; container orchestration; IaC (Terraform/Pulumi); CS fundamentals; Java/C++/Golang/Python; public cloud experience; TS/SCI with Polygraph clearance; US citizenship; advanced degree in CS.
Terraform, Pulumi, Kubernetes, Cloud Platforms (AWS, Azure, GCP), Java, C++, Go, Python
2w
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Software Engineer II, AI
Washington, District of Columbia, United States
$144k-$160k/yr RemoteFull Time
Bachelor's degree in IT/CS/Engineering; 2+ yrs Generative AI; 3+ yrs cloud (AWS); 4+ yrs DevOps; 2+ yrs agentic systems; 3+ yrs distributed cloud-native; 4+ yrs programming (Python/Java/Rust/SQL/Node.js).
AWS, GitHub, Bitbucket, AWS CloudFormation, AWS Lambda, AWS EKS, S3, LangGraph, Python, Java, Rust, SQL, Node.js
2w
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Senior NetIQ Engineer
Suitland-Silver Hill, Maryland, United States
HybridFull Time
5+ YOE5+ years in Directory Services with NetIQ eDirectory/IDM; Java/C++ development; Python/Perl/Linux scripting; REST/JSON/SOAP; SQL databases.
NetIQ eDirectory, NetIQ IDM, LDAP, REST, SOAP, Java, ECMAScript, Python, Perl, Shell, XML, XSLT, SQL, PostgreSQL, Oracle, SQL Server, PowerShell, Bash, Linux
1w
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Cleared AI/ML Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
12+ YOEActive TS/SCI clearance with Full Scope Polygraph; 12+ years software engineering in ML/AI; degree in CS/AI or related field; strong DL framework experience; proficient in Python/C++/Java; cloud ML services; CI/CD practices; strong problem-solving and collaboration.
TensorFlow, PyTorch, MXNet, Python, C++, Java, AWS, GCP, CI/CD
5d
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Sr. Software Engineer/Developer
Washington, District of Columbia, United States
$135k-$234k/yr OnsiteFull Time
5+ YOEBS in Engineering or CS with 10-12 years' experience; MS 8-10 years; PhD 5-7 years; DoD TS/SCI clearance; proven software development experience; multiple languages; Linux front-end/back-end; DevOps tools; strong communication and collaboration.
Java, Python, C++, JavaScript, Ruby, Motif, Linux, Git, Jira, Docker, Kubernetes, CI/CD
3w
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Sr. Software Engineer - TS/SCI CI Poly Required
Washington, District of Columbia, United States
OnsiteFull Time
Tesla Laboratories: Provides engineering, cybersecurity, and environmental services to federal agencies.
Active TS/SCI clearance with CI Polygraph required; experience with Java, Groovy, Grails, Python, PL/SQL, JavaScript, CSS, HTML; Oracle DB; Tomcat; GIS tools.
Java, Groovy, Grails, Python, PL/SQL, JavaScript, CSS, HTML, Oracle, Tomcat, GeoServer, OpenLayers, XML, JSON, IBM Watson Explorer, Elasticsearch
3w
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Software Developer
Dahlgren, Virginia, United States
HybridFull Time
5+ YOEFive years of professional software development experience; Agile experience; DoD exposure a bonus; security clearance required; BS in CS/Engineering or related field; CISSP/Security+ preferred.
C/C++, C#, .NET, Java, Python, Amazon Web Services, PHP, Data Science (coding), WPF, MVC
2w
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Sr. Software Engineer II (6520)
Tysons Corner, Virginia, United States
$142k-$195k/yr OnsiteFull Time
7+ YOEBachelor's degree in CS/IT/Engineering or equivalent; Secret clearance; 7+ years IT; 6+ years full stack with AWS; 3+ years Go/Python/Java/JavaScript/React/Angular/TypeScript/NextJS; IL6+ AWS; strong data, security, and deployment experience.
AWS, Python, Go, Java, JavaScript, React, AngularJS, TypeScript, NextJS, DevSecOps
3d
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Cleared Software Engineer
Chantilly, Virginia, United States
$69k-$116k/yr OnsiteFull Time
Bachelor's degree or equivalent experience; strong software development fundamentals; experience with Java, Scala, Python, or Golang; Kubernetes, Docker, AWS; CI/CD tooling; willingness to work extended hours.
Java, Scala, Python, Golang, Kubernetes, Docker, AWS, CI/CD, Kafka, NiFi, Gitlab CI/CD, ArgoCD, CircleCI, Jenkins
3mo
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Android Mobile Application Developer (TS/SCI w POLY)
McLean, Virginia, United States
$100k-$175k/yr OnsiteFull Time
3+ YOE3+ years software development; Android NDK; C and Python; Git; OS internals; TS/SCI w POLY clearance.
Android, Android NDK, Git, C, Python, Java
1mo
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MD-DevOps Software Engineer - TS/SCI w/ Polygraph
Annapolis Junction, Maryland, United States
$180k-$230k/yr OnsiteFull Time
8+ YOE8+ years DevOps; 5+ years CI/CD tooling; Windows admin; scripting (Java, Groovy, Python, PowerShell, Bash); IDEs; VM and container experience; strong communication; fast learner.
Java, Groovy, Python, PowerShell, Bash, JavaScript, AngularJS, Eclipse, Visual Studio Code, Visual Studio, Rhapsody, WebStorm, Version Control, VMs, Containerization
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
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
9h
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Software Engineer
Annapolis Junction, Maryland, United States
$100k-$185k/yr OnsiteFull Time
Applied Network Solutions: Providing cybersecurity and network engineering services for government agencies.
4+ YOEActive TS/SCI clearance with polygraph; experience in Python, Spark, C++, data analytics; CS degree with extensive relevant experience.
Python, Spark, C++, Rust, Java, C, Docker, Kubernetes, Ansible, Linux
2mo
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Forward Deployed Software Engineer - Tactical Edge
Washington, District of Columbia, United States
$135k-$200k/yr OnsiteFull Time
Active US security clearance (Top Secret) or willingness to upgrade; strong software engineering background; experience with containers and orchestration; proficient in Python/Java/JavaScript/Bash; comfortable collaborating with customers; willingness to travel ~25%.
Docker, Podman, OpenShift, Kubernetes, Python, Java, Bash, JavaScript, Go, Linux, Networking, On-premise infrastructure
1mo
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DevOps Engineer
Herndon or Springfield
OnsiteFull Time
DevOps engineer with Kubernetes, Linux/Windows, Java development, TS clearance, US Citizenship.
Kubernetes, Docker, Jenkins, Git, Python, Java, ArcGIS, Linux, Windows
2mo
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HIT Integration Developer
Woodlawn, Maryland, United States
$144k-$197k/yr OnsiteFull Time
1+ YOEExperience in IT health interoperability, APIs, and AI in healthcare; knowledge of FHIR/HL7; programming in Python/Java/JavaScript; GS-14/15 level experience.
Python, Node.js, Java, J2EE, JavaScript, SOAP/REST, XSLT, XML, JSON, Machine Learning
4w
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SolrCloud Backend Engineer
Rockville, Maryland, United States
$130k-$150k/yr RemoteFull Time
7+ YOE7+ years backend engineer with SolrCloud; Java/Spring experience; REST, Lucene, NLP, ML basics; Linux; DevOps tools.
SolrCloud, Lucene, Spring, Spring Boot, Java, Groovy, Python, XSLT, XML, REST, SolrJ, Prometheus, Grafana, Jenkins, Maven, Ansible, Nexus, NLP, TDD, BDD, Git, GitLab, JMeter
1w
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Senior Software Engineer
Woburn or Arlington or United States
$140k-$170k/yr HybridFull Time
3+ YOE3-5+ years experience; fluent in Java; Linux/ Docker; U.S. citizen eligible for Top Secret; remote/hybrid work
Java, Python, Docker, Linux
4d
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Data Engineer
Arlington or United States
$110k-$166k/yr RemoteFull Time
4+ YOE4–6 years of experience in Agile software development; strong Python and Java; experience with high-volume ETL; AWS services; SQL; Linux; JSON; DevSecOps tools; TS/SCI clearance; Bachelor's degree in Computer Science or related field.
Python, Java, AWS, SQL, Linux, JSON, Jenkins, Ansible, Terraform, Vault
2mo
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Senior Software Engineer (Hybrid) - 27020 (Columbia, MD, Maryland, United States)
Columbia, Maryland, United States
$138k-$200k/yr HybridFull Time
9+ YOE9+ years backend software engineering; proficient in Java, Python, or Go; experience with Trino, Kubernetes, Airflow, and PostgreSQL; strong problem-solving and collaboration skills; willingness to work hybrid in Columbia, MD.
Java, Python, Go, Trino, Kubernetes, Airflow, PostgreSQL, Keycloak, REST APIs, CI/CD
2w
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Senior Full Stack Developer
Herndon, Virginia, United States
OnsiteFull Time
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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DevOps Engineer
Washington, District of Columbia, United States
$110k-$150k/yr OnsiteFull Time
8+ YOETop Secret/SCI clearance; BS in CS/ENG/IS; 8+ years DevOps and software development; 8+ years infra automation; Ansible, Terraform; AWS; Jenkins/GitLab; Docker, Kubernetes; Python or Java; full lifecycle engineering; strong problem solving.
Ansible, Terraform, Amazon Web Services, Jenkins, GitLab, Docker, Kubernetes, Python, Java
HiringCafe market data
Java Python Developer Jobs market signals in Leesburg, VA, 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
1,300+
Hiring companies
300+
Fresh sample
59% new in 30d
Salary visibility
57% show pay
Companies appearing in this market
ArcfieldBase-2 SolutionsSystems & Technology ResearchVantorApplied Network SolutionsCapTechEverWatchPalantir
Work location mix in visible results
Onsite: 46Hybrid: 23Remote: 6