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Java Python Developer Jobs in Purcellville, VA, US
1,200+ java python developer jobs from 280+ companies hiring in Purcellville, VA, US.
2mo
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Lead Software Engineer
Arlington, Virginia, United States
$161k-$266k/yr HybridFull Time
Bachelor's degree in Computer Science or related field; senior/lead software engineering experience; strong backend with Java (preferred) or C#/Python; experience with data platforms and AWS.
Java, Python, Databricks, Airflow, Snowflake, Aws, Jenkins, Splunk
1mo
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Software Developer 6
Springfield, Virginia, United States
OnsiteFull Time
12+ YOEActive Top Secret clearance with SCI eligibility; 12+ years of related experience or 9+ years with Master’s; DoD 8570 IAT Level II+ (e.g., CISSP, Security+); strong coding in C#, Java, Python; front-end HTML/CSS/JS, Angular/React; SQL/MongoDB; excellent communication and teamwork.
HTML, CSS, JavaScript, XML, jQuery, C#, Java, Python, Angular, React, Node.js, MySQL, MongoDB, Apache
1mo
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Senior Software Development Engineer - US Federal
McLean or Reston
$164k-$246k/yr OnsiteFull Time
8+ YOESecurity clearance TS/SCI w/ CI Poly; 8+ years in UML/Web app/SaaS; OO languages Java/Python/C#/C++; 8+ years designing/developing business apps; agile experience; JSON/REST/GraphQL; design patterns.
JSON, REST, GraphQL, UML, Java, Python, C++, C#
1w
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Full Stack AI Developer
Arlington, Virginia, United States
$95k-$115k/yr HybridFull Time
1+ YOEFull Stack AI Developer with 1-3 years software development, backend Python and frontend React/JS, AI/NLP, RAG pipelines, SQL, Git, Agile.
Python, Java, JavaScript, TypeScript, React, SQL, Git, Docker, AWS, Azure, GCP, LangChain
1mo
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Sr. Forward Deployed Software Engineer
Arlington, Virginia, United States
OnsiteFull Time
8+ YOE8+ years software engineering or systems integration; Palantir Foundry expertise; DoD experience; Python/TypeScript/Java.
Palantir Foundry, Workshop/Slate, Ontology, AIP, CI/CD tooling, Python, TypeScript, Java
3w
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Software Engineer 2
Annapolis Junction or Hanover
$50k-$290k/yr OnsiteFull Time
The Swift Group: Providing engineering and cybersecurity services for national security missions.
14+ YOELinux, C++, Java, scripting (Shell, JavaScript, Bash, Python), networking, Git, Docker; 14+ years exp with software engineering or 19+ years exp in lieu of degree; US citizenship with TS/SCI poly clearance.
Linux, C++, Java, Scripting languages, Socket programming, Git, Docker, Python
1mo
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Software Developer
Springfield, Virginia, United States
$118k-$201k/yr OnsiteFull Time
3+ YOEBachelor’s degree in CS/IS/Engineering; 3+ years development experience with Python, Java, Perl, Angular, HTML/CSS, XML, Oracle/Postgres; Agile/cloud; strong communication and problem-solving.
Python, Java, Perl, Angular, HTML, CSS, XML, Apache Tomcat, Solr, Alfresco, Oracle, PostgreSQL, REST APIs, AWS
1w
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Software Engineer - Mid Level
Annapolis Junction, Maryland, United States
$156k-$195k/yr OnsiteFull Time
7+ YOE7+ years SWE experience; TS/SCI with poly; BS in CS; 4 additional years may substitute for degree; Linux; Python/C++/Java/JavaScript; SDR and geospatial skills desired.
Python, C++, Java, JavaScript, Linux
1mo
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Software Engineer SWE 0
Jessup, Maryland, United States
OnsiteFull Time
0+ YOEBachelor’s degree in Computer Science or related discipline or four years of SWE experience; TS/SCI with Poly clearance; Linux proficiency; Python/C++/Java/JavaScript; Git/GitLab; Agile/Scrum.
Python, C++, Java, JavaScript, Git, GitLab, VSCode, Eclipse
6d
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Backend Software Engineer
Gaithersburg or Alexandria or Chantilly or St. Louis or Tucson
OnsiteFull Time
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
3d
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Cleared Software Engineer
Chantilly, Virginia, United States
$69k-$116k/yr OnsiteFull Time
0+ YOEBachelor's in CS/IS or related field; strong programming knowledge; experience with Java, Scala, Python, Golang; AWS, Kubernetes, Docker; CI/CD tooling; DoD/Intelligence Community exposure preferred.
Java, Scala, Python, Golang, Kubernetes, Docker, AWS, Gitlab CI/CD, ArgoCD, CircleCI, Jenkins, Kafka, NiFi
2mo
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ME00549-Software Engineer 2
Annapolis Junction, Maryland, United States
$160k-$220k/yr OnsiteFull Time
14+ YOETop Secret/SCI clearance; Bachelor's degree and 14 years of related experience; strong experience with Java, JavaScript, Python, and full-stack data-focused technologies.
Java, JavaScript, Python, Docker, Kubernetes, Jenkins, GitHub, GitLab, Jira, Confluence, Agile
2mo
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Military Systems Cybersecurity Software Engineer
Laurel, Maryland, United States
$100k-$195k/yr OnsiteFull Time
3+ YOEBachelor's in CS/Cybersecurity/Software Eng; 3+ years in software development; proficiency in Python/Java/C/C++; knowledge of cybersecurity and networks; ability to travel up to 10%; eligible for Interim Secret/TS/SCI clearance.
Python, Java, Golang, Rust, C, C++, Wireshark, VMware vSphere, Splunk, ELK Stack
2mo
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Back-End Developer, Senior/Mid- JCC2-JCO
Lackland Air Force Base or Fort Meade
OnsiteFull Time
7+ YOEBachelor's degree; 7-10 years in software development; backend web development; Python and PostgreSQL; RESTful API; DevSecOps; cloud experience.
Python, PostgreSQL, Jira, AWS, Kubernetes, Docker, Java, OpenJDK, Ansible, Packer, Maven, REST API, Red Hat, SQL, CI/CD
1mo
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Senior Software Engineer
New York or Austin or Washington
$190k-$235k/yr HybridFull Time
5+ YOE5+ years of full-time software engineering; expert in JS, Python, Java or equivalent; experience building scalable production applications; strong communication; ability to balance speed with quality; fintech interest.
JavaScript, Node.js, React, Python, Java
2w
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Junior Software Engineer
Fort Belvoir, Virginia, United States
OnsiteFull Time
Bachelor's in CS/Engineering or related field; US citizenship and ability to obtain/maintain a secret clearance; Java, C++, or Python; knowledge of SDLC; strong problem-solving and teamwork; up to 25% travel.
Java, C++, Python
3w
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Software Development Engineer II- Back End
Vienna, Virginia, United States
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend software engineering; Python/Node/Java; REST APIs; ArcGIS Enterprise; containers (Docker/Kubernetes); security clearance; BS in CS/Math/GIS/STEM
Python, JavaScript/Node.js, Java, Docker, Kubernetes, ArcGIS Enterprise, REST APIs, Geoprocessing
2mo
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Software Engineer IV
Annapolis Junction, Maryland, United States
OnsiteContract
Senior-level SWE responsible for developing and maintaining complex data flows and software; requires Unix, Java, scripting, NiFi, CM tools, and TS/SCI with Poly.
Linux, Bash, Java, Python, Perl, Jira, Confluence, NiFi, Git, Shell scripting, Eclipse, Docker, Spring, Kafka, OSS, Web Services, JavaScript, C, C++, Python, Ruby
6d
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Software Engineer/ Full Stack Developer
Chantilly, Virginia, United States
OnsiteFull Time
Experience with big data tech (Spark/PySpark); Solr/Elasticsearch; data quality analysis; RegEx; Java, JavaScript, Bash, Python; AWS; Java 8+; Jira and GitHub; Spring Boot; REST APIs; Linux (CentOS); middleware/backend development; TS/SCI clearance.
Spark, PySpark, Solr, Elasticsearch, RegEx, Java, JavaScript, Bash, Python, AWS, Spring Boot, REST, Linux, CentOS, Jira, GitHub
5d
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Software Engineer SME (TS/SCI with Poly Required)
McLean, Virginia, United States
$187k-$318k/yr OnsiteFull Time
15+ YOE15+ years experience; TS/SCI with Poly; cloud, data analytics, NiFi, SQL, AWS; Python/Java; CI/CD and DevOps.
S3, RDS, EC2, SQL, MySQL, PostgreSQL, NiFi, Python, Java, Docker, Terraform, Git, GitHub, Jenkins, Jira, Confluence, Flask
1mo
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Software Engineer-Multiple Levels (DT-0/1/2)
Annapolis Junction, Maryland, United States
$170k-$230k/yr OnsiteFull Time
7+ YOEC++, Java, Linux; Python/JavaScript; Git/GitLab; Agile; 7+ years; BS in related field or 11 years experience in lieu.
C++, Java, Linux, Python, JavaScript, Git, GitLab, VSCode, Eclipse, Jira, Confluence
1d
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CUAS SW Engineer
United States or Summit Point
$88k-$155k/yr RemoteFull Time
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
1w
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Hybrid Software Reverse Engineer - FUTURE NEED
Vienna, Virginia, United States
$43-$96/hr OnsiteFull Time
US citizen; ability to obtain government security clearance; Bachelor's in CS/CE/EE/Math/Physics; read assembly; proficient in C/C++/Java/Python; knowledge of Java and low-level languages; strong communication and teamwork.
IDA Pro, Python, MongoDB, Neo4j, C, C++, Java, C#
1mo
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UX Engineer / Front-End Engineer – TAK (ATAK/WinTAK)
Chantilly, Virginia, United States
OnsiteFull Time
3+ YOE3-5 years UX/UI development; experience with ATAK/WinTAK/TAK Server; strong Java and front-end skills; API/data stream integration; TS clearance (TS/SCI preferred).
Java, React, Angular, Vue, Kotlin, Python, GitLab, ATAK, WinTAK, TAK Server
1mo
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Advisor Software Engineer (AWS)
Reston or Plano
$155k-$209k/yr HybridFull Time
6+ YOE6+ years Java development; AWS and AI/ML exposure; strong design/architecture; Angular; stakeholder collaboration; mentoring; observability and SDLC expertise.
Java, Angular, Python, AWS, TensorFlow, PyTorch
11h
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Staff Software Engineer, Defense and Consulting Engineering
Reston or New York
$207k-$300k/yr OnsiteFull Time
8+ YOEBachelor's degree or equivalent; 8 years software development; 5 years full-stack across backend (Java, Python, Go, C++) and frontend (JavaScript/TypeScript, HTML/CSS); 5 years testing/launching software; 3 years design/architecture.
Java, Python, Go, C++, JavaScript, TypeScript, HTML, CSS
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
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
1mo
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SOFTWARE ENGINEER – Front End/Testing - 7+ yrs of Experience - TS/SCI w/Poly clearance is required- RC
Columbia, Maryland, United States
$186k-$192k/yr OnsiteFull Time
6+ YOEFront-end UI testing/development; experience with UI test scripts (Robot Framework, Python/React/Java/C++); BS in CS or 11+ years SWE; TS/SCI with poly clearance.
Robot Framework, React, Java, C++, Python
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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Software Engineer 2 (IDN - 148)
Annapolis Junction, Maryland, United States
RemoteFull Time
3+ YOETS/SCI w/ Poly; advanced degree in CS or related field; 3+ years (Masters) or 5+ years (Bachelors) or 7+ years experience; Linux, Python, Java, Bash, Airflow, Spark; Docker/containers; Git; AWS familiarity.
Linux, Bash, Python, Java, Apache Airflow, Apache Spark, Docker, containerd, Podman, Git
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
2mo
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Software Engineer, Airflow Data Pipelines- Fully Cleared
Annapolis Junction, Maryland, United States
$155k-$205k/yr HybridFull Time
3+ YOEActive Top Secret Clearance with Full Scope Poly; U.S. Citizenship; CS degree or equivalent with years of SWE experience; strong Linux, Python/Java, Airflow, Spark; container and Git experience.
Python, Java, Apache Airflow, Apache Spark, Linux, Bash, Git, Docker, Podman, containerd, AWS, Jira, Confluence
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
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
2mo
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DevOps Software Engineer, Senior
Annapolis Junction, Maryland, United States
$100k-$275k/yr OnsiteFull Time
7+ YOEActive TS/SCI clearance with Polygraph; 5+ years in DevOps tools, CI/CD; system administration; experience with Java, Groovy, Python, PowerShell, Bash, JavaScript; Windows and Linux; container platforms; strong communication; ability to work independently.
Java, Groovy, Python, PowerShell, Batch, Bash, JavaScript, AngularJS, Eclipse, Visual Studio Code, Visual Studio, Rhapsody, WebStorm, Git, CI/CD Tools, Docker, Kubernetes, Oracle, PostgreSQL, MongoDB, SQL Server
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
HiringCafe market data
Java Python Developer Jobs market signals in Purcellville, 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
1,200+
Hiring companies
280+
Fresh sample
48% new in 30d
Salary visibility
72% show pay
Companies appearing in this market
BAE SystemsBase-2 SolutionsCipher Tech SolutionsEsriGoogleHalogen Engineering GroupJohns Hopkins University Applied Physics LaboratoryMomentum Engineering
Work location mix in visible results
Onsite: 65Hybrid: 19Remote: 5