Java Developer Jobs in Ashburn, VA, US

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Sr. Infrastructure Engineer 2 - Network

Washington, District of Columbia, United States

OnsiteFull Time

ICANN: Coordinates the global domain name and IP address systems.

8+ YOESenior system admin with Linux/Windows, scripting (Perl/Shell/Python), network addressing, security, and server co-location experience; 8+ years IT.

Linux, Windows, Active Directory, Tomcat, JBoss, Perl, Shell, Python, IPv4/IPv6, SQL, Java

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2mo

Cloud Engineer- Data/AI Focused

Rochester or Charlotte or Nashville or New York City or Washington or Philadelphia or Atlanta

HybridFull Time

Innovative Solutions: AWS Premier Partner providing cloud migration and AI solutions.

1+ YOE1-3 years cloud experience, AWS cert or ability to obtain, SQL and at least one programming language, basic data engineering, familiarity with AWS data services, Git, and IaC concepts.

AWS, Glue, Lambda, Step Functions, EMR, RDS, Aurora, Redshift, DynamoDB, S3, SQL, Python, Java, Git, Terraform, Infrastructure as Code

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US E-GPS Consulting Services-AWS Cloud Engineer-AI&E/HCI-PDM-640872

Washington, District of Columbia, United States

$81k-$134k/yr OnsiteFull Time

Deloitte: Provides professional audit, consulting, advisory, and tax services.

2+ YOEBachelor’s degree; Top Secret clearance; 2+ years AWS cloud development; 2+ years cloud solutioning; onsite in Washington, DC; US work authorization

Git, Docker, Kubernetes, Python, Java, JavaScript, Node.js

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Health Data Engineer - Mid

Tysons, Virginia, United States

$91k-$116k/yr OnsiteFull Time

LMI: Delivers management, technology, and analytics solutions for federal agencies.

5+ YOE5+ years data engineering experience; healthcare data experience preferred; strong SQL/NoSQL, ETL/ELT, cloud platforms, Python/Scala; HIPAA knowledge.

SQL, PostgreSQL, MongoDB, Snowflake, Redshift, BigQuery, Databricks, Apache Spark, Apache Airflow, Talend, NiFi, AWS, Azure, Google Cloud, AWS Glue, S3, Athena, Python, PySpark, Java, Scala, Docker, Kubernetes, Tableau, Power BI

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Senior Director, Software Engineering

Philadelphia or Alexandria or Ann Arbor

HybridFull Time

ClarivateNew York Stock Exchange: CLVT: Provides data, analytics, and software for the global innovation lifecycle.

10+ YOE5+ MgmtBachelor's in CS or related; 10+ years leadership; 10+ years software development; strong Java and Python.

Java, Python, Angular, Talend, Databricks, Spark, AWS, PostgreSQL, MySQL, Oracle, XML, XSLT, REST, SOAP, NodeJS

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2mo

Senior AI/ML Modeling, Simulation & Analysis Engineer (Part-Time)

Chantilly or Springfield

OnsitePart Time

TRIAEM: Providing systems engineering and cybersecurity services to federal agencies.

Active TS/SCI clearance; MS in Computer Science, AI/ML, Computer Vision, or related STEM; experience in AI model verification, validation, and evaluation; AI Assurance and Explainable AI; proficiency in Python, C++, MATLAB, R, or Java; experience with AI/ML modeling and automation.

Python, C++, MATLAB, R, Java

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Sr Engineer, Machine Learning Engineering

Bellevue or Atlanta or Herndon or Overland Park

$127k-$229k/yr OnsiteFull Time

T-MobileNASDAQ: TMUS: Provides wireless voice, data, and mobile internet services.

5+ YOESenior ML engineer with LLM deployment experience; 5+ years end-to-end ML pipelines; 3+ years MLOps; cross-functional collaboration.

Python, R, Java, Scala, Go, PyTorch, TensorFlow, LangChain, Hugging Face, GPT-4, transformers

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2mo

Computer Systems Security Engineer

Fort Belvoir, Virginia, United States

OnsiteFull Time

C2 Essentials: Provides HR outsourcing and mission support to federal contractors.

7+ YOEActive DoD Top Secret clearance; Security+; extensive eMASS experience; BS in Information Technology or related field; 7+ years in cyber security; Army network experience.

eMASS, AWS, Java, Spring, JavaScript, NIST

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Sr. ETL/SQL Engineer

McLean, Virginia, United States

$110k-$150k/yr OnsiteFull Time

Capgemini Government SolutionsEuronext Paris: CAP: Provides IT modernization and digital transformation services to government agencies.

8+ YOE8+ years ETL/SQL, database design, SQL tuning, data security; able to obtain government clearance; Bachelor's in CS/IS/Engineering or equivalent.

Java, Python, C#, JavaScript, AWS, Azure, Git, Jira, Jenkins, Docker, Kubernetes

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Sr Software Engineer - Platform Data Query

San Diego or Santa Barbara or Dallas or New York City or Chicago or San Francisco or Washington DC or Denver

$138k-$173k/yr RemoteFull Time

AppFolioNASDAQ: APPF: Cloud business management solutions for the real estate industry.

5+ YOEExperience operating and scaling data pipelines with Iceberg, Trino, Kafka, Flink, and cloud data lakes.

Apache Flink, Kafka, Trino, Iceberg, AWS Glue, AWS S3, AWS Athena, Python, Ruby, Java, JavaScript, C#, SQL

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DevOps Cloud Engineer (Herndon, VA, US)

Herndon, Virginia, United States

OnsiteFull Time

WärtsiläNasdaq Helsinki: WRT1V: Manufactures engines and power systems for marine and energy markets.

DevOps/cloud infrastructure expert with GCP, Kubernetes, CI/CD, GitOps.

Google Cloud Platform, Kubernetes, Terraform, ArgoCD, GitHub, GitHub Actions, Node.js, Go, Python, Java

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Machine Learning Engineer - Secure AI Lab

Pittsburgh or Arlington

OnsiteFull Time

Software Engineering Institute: Developing software and AI engineering for national security.

Bachelor’s in CS/ML or related field with 8+ years experience; or MS with 1+ year; or PhD with 2+ years. Onsite in Pittsburgh, PA or Arlington, VA. Ability to obtain security clearance. Up to 25% travel.

TensorFlow, PyTorch, Torch, Caffe, Python, C/C++, Java

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Professional Services - Sr. Solutions Engineer (SE) for Embedded Systems

Washington, District of Columbia, United States

OnsiteFull Time

AptivNYSE: APTV: Engineers electrical architectures and safety software for vehicles.

5+ YOESenior technical consultant with 5+ years in systems engineering, cloud/infrastructure, embedded/real-time, strong troubleshooting, security-focused, able to travel; U.S. citizenship with clearance preferred.

C++, Python, Go, Java, Git, JIRA, CI/CD, Linux, Virtualization, Containerization, Infrastructure as Code, Automation

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Software Tester - Clearance Required

Reston, Virginia, United States

HybridFull Time

Cydecor: Provides technology solutions and engineering for national security.

8+ YOE8+ years manual testing; Selenium WebDriver with Java; Agile; test case development; UI testing; data integrity validation; CI/CD with GitLab.

Selenium WebDriver, Java, CI/CD, GitLab

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2mo

Staff Site Reliability Engineer, Kubernetes w/ active TS/SCI

Washington DC, District of Columbia, United States

HybridFull Time

OktaNasdaq: OKTA: Provides cloud-based identity and access management software for businesses.

5+ YOESenior/Staff SRE with Kubernetes, Linux, Terraform/AWS, TS/SCI clearance; on-site travel in DC area.

Kubernetes, Helm, Linux, Go, Python, Bash, Ruby, AWS, Terraform, CloudFormation, Docker, Java, Apache, Tomcat

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The One 23 Group - Red Hat Linux Engineer

Arlington or United States

OnsiteFull Time

The One 23 Group: Providing IT and cybersecurity services to federal government agencies.

10+ YOEActive Top Secret clearance with SCI eligibility; 10+ years IT engineering; Linux/UNIX experience; enterprise monitoring tools experience.

Red Hat Linux, Linux, UNIX, GCCS-J, Network Node Manager, Net Health, CA Systems Edge, EMPIRE, EMPSEC, VMware, Tomcat, Java, Bash

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1mo

SME - Software Engineering (DC)

Los Angeles or Washington

$200k-$310k/yr HybridFull Time

Galaxia Technologies: Provides specialized engineering services for national security missions.

12+ YOE12+ years in software development; 10+ years in leadership; BS CS/SE or MS degree; proficient in Python/Java/C++; Agile/DevSecOps/SRE/CI/CD; TS/SCI clearance with CI polygraph.

Python, Java, C++, Agile, DevSecOps, Site Reliability Engineering, CI/CD

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Senior DevOps Engineer - Build / Environment Manager

Arlington, Virginia, United States

HybridFull Time

Stand Together: Empowers social entrepreneurs to solve society's most pressing problems.

10+ YOESenior DevOps and Cloud Engineering with 10+ years of experience; strong AWS expertise; lead DevOps function; CI/CD, infrastructure as code, security, observability; collaboration across teams.

GitHub Actions, Terraform, AWS CDK, Serverless Stack (SST), Ansible, CloudFormation, Docker, Kubernetes, Cloudflare, Prometheus, Grafana, Nagios, ELK Stack, Python, PowerShell, JavaScript, Java, Git

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Information Systems Security Engineer - Mid to Expert Level (Maryland)

Fort Meade, Maryland, United States

$105k-$197k/yr OnsiteFull Time

National Security Agency: US agency providing foreign signals intelligence and cybersecurity.

3+ YOESecurity engineer with CS/related degree; experience in information/cyber/security, RMF, risk assessment, vulnerability management; proficient in programming and cloud security.

Python, Java, RMF, NIST, Cloud computing, Vulnerability assessment

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Programmer

Herndon, Virginia, United States

OnsiteFull Time

Valiant: Providing mission-critical support and training to government agencies.

11+ YOE11+ years of relevant experience; TS/SCI with Poly clearance; BS in CS or related field or equivalent experience; strong software development and communications protocol knowledge; SQL, Ruby, JAVA, C++, .NET; ability to manage multiple projects.

SQL, Ruby, JAVA, C++, .NET

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Technical Lead – Application Development

Suitland, Maryland, United States

RemoteFull Time

G2IT: Provides IT systems integration and engineering for federal agencies.

8+ YOELead Java/Angular projects; cloud migration to AWS; microservices; CI/CD; team leadership; 8+ years experience; US citizen; Public Trust clearance.

Java, Spring, Angular, Oracle, PostgreSQL, AWS, Docker, Kubernetes, EKS, Tomcat, CI/CD

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Senior Software Development Manager

Arlington, Virginia, United States

HybridFull Time

MarginEdge: Restaurant management platform automating back-office operations and accounting.

10+ YOE3+ Mgmt10+ years software engineering; 3+ years in engineering management; strong Java/JavaScript (React); cloud/AWS; leadership and delivery focus; cross-functional collaboration; strong communication.

Java, JavaScript, React, React Native, AWS, DynamoDB, Postgres

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Technical Lead

Washington, District of Columbia, United States

$150k-$180k/yr RemoteFull Time

RJIT Solutions: Provides specialized technology and scientific services for federal agencies.

10+ YOE10+ years software engineering with leadership; Java/AWS; Oracle to PostgreSQL migrations; security/compliance.

Java, Apache Tomcat, Spring Framework, JSP, Angular, Oracle PL/SQL, PostgreSQL, AWS, Jenkins, Git/GitHub, Jira, Confluence, SAST, Snyk, Bandit, OWASP ZAP, Bash, NIST SP 800-53, FISMA, OWASP ASVS

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Software Testing Principal

Ashburn, Virginia, United States

RemoteFull Time

Syms Strategic Group: Provides IT and professional services to federal government agencies.

10+ YOELead software testing with strong programming skills (C#, Java, Python); develop/test plans; manual and automated testing; SDLC/Agile experience.

Selenium, TestNG, JUnit, QTP, LoadRunner, CI/CD, GitHub Actions, Git, Subversion, AWS, Azure

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Default - DO NOT USE - Software Architect

Herndon, Virginia, United States

HybridFull Time, Contract

CompQsoft: Provides IT consulting and software engineering for government agencies.

8+ YOEBachelor's degree and at least 8 years' experience in enterprise web applications; REST services; cloud; Java, SQL; Active Secret clearance.

Java, Spring MVC, Spring Boot, REST, Oracle, MySQL, PostgreSQL, CAST, HP Fortify, SonarQube

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Senior Director, Software Engineering

Philadelphia or Alexandria or Ann Arbor

HybridFull Time

ClarivateNYSE: CLVT: Provides data, analytics, and workflow solutions for global innovation.

10+ YOE5+ Mgmt10+ years in technology leadership with cross-functional teams; 10+ years software engineering; Bachelor's in CS or related field; Proficient in Java and Python.

Java, Python, XML, HTML, XSLT, XML Schema, XQuery, XPath, PDF, TIFF, Angular, Talend, Pentaho, Databricks, Spark, EMR, Hive, Microservices, SOAP, REST, JavaScript, Node.js, AWS, AMQ, JMS, Spring Boot, PostgreSQL, MySQL, SQL Server, Oracle, ETL, SaaS, NL P, ML, AI

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Automated Tester

Fairfax, Virginia, United States

OnsiteFull Time

Prometheus Federal Services: Providing strategic consulting and program management for federal health agencies.

5+ YOE5+ years software testing, 2+ years automated testing; Selenium/Cypress/Playwright; QA/SDLC/Agile; CI/CD; Git; languages: JavaScript/Python/Java/C#

Selenium, Cypress, Playwright, Azure DevOps, Git, GitHub Actions, Jenkins, CI/CD, JavaScript, Python, Java, C#

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2mo

Delivery Engineering Lead

Washington, District of Columbia, United States

$235k-$255k/yr OnsiteFull Time

Virtru: Provides data-centric security and encryption for email and files.

10+ YOE3+ Mgmt10+ years software engineering; 3+ years engineering leadership; deployment automation expertise; strong Go/Python/Java skills; AI tooling experience; DevOps and IaC (Terraform, Ansible); stakeholder management.

Go, Python, Java, Terraform, Ansible, GitHub Copilot, Claude Code

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Software Engineering Internship 2026

Columbia, Maryland, United States

OnsiteInternship

Astrion: Delivering engineering and mission support services to government agencies.

Pursuing Bachelor's in engineering or computer science; GPA 3.0+; ability to obtain US DoD security clearance; strong communication and analytical skills; programming in MATLAB, Python, C++, Java; familiar with CAD and data analysis.

MATLAB, Python, C++, Java, Microsoft Office

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Head of Platform

Arlington, Virginia, United States

OnsiteFull Time

Rune Technologies: Develops AI-powered logistics and sustainment software for military operations.

10+ YOE10+ years building and scaling distributed systems; leadership of engineering teams; backend design; distributed data systems; eventual consistency/edge constraints; proficient in Go, C++, Java, or Rust; hands-on architecture and implementation.

Go, C++, Java, Rust

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Development Chief / Technical Architect

Arlington, Virginia, United States

HybridFull Time

Sprezzatura: Provides IT and management consulting for federal government agencies.

10+ YOEBA/BS or 5 years experience; moderate security clearance; 10+ years leading technical software and system solutions; software architecture expertise; Agile experience; strong leadership and communication; web and API development experience.

Java, JavaScript, Git, SQL, Python, Angular, React, Vue, AWS, Microsoft C#, Angular 2

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CNO Analyst Programmers, Levels I/II (AE26041159)

Hanover, Maryland, United States

$161k-$209k/yr OnsiteFull Time

Advantage Engineering & IT Solutions: Provides technical engineering and IT services for government agencies.

2+ YOETop Secret SCI with polygraph; Bachelor's in CS/IS/Network Engineering; 2-8+ years; VR skills; strong programming in C/C++/Java/Python/Perl/Assembly; Windows/UNIX/Linux experience; lifecycle/process knowledge.

C, C++, Java, Python, Perl, Assembly, Windows, UNIX/Linux

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2mo

AI Researcher Intern DU26

Baltimore, Maryland, United States

$15/hr OnsiteMultiple Commitments Available

Davis Unlimited Information Technologies: Provides IT consulting and systems engineering services to government agencies.

0+ YOEPursuing Bachelor's or Master's in CS, Software Engineering, Applied Mathematics, or related field; GPA 3.0+; strong Python/Java/C++/JavaScript experience; familiarity with deep learning tools; able to work >=30 hours/week for 8 weeks.

Python, Java, JavaScript, TypeScript, C++, PyTorch, TensorFlow, Codex, Claude Code, Gemini

1mo

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1mo

UICC Engineering Intern (Dulles, VA, US)

Dulles, Virginia, United States

OnsiteInternship

Giesecke+Devrient: Sells security products for banknotes, payments, and digital identities.

0+ YOECurrent college student pursuing a Bachelor's or Master's in computer science/engineering; 2 years completed. Proficient in C++, Java, Python, C#; experience with SQL databases; proficient with Microsoft Office; good written and verbal communication; able to work independently.

C++, Java, Python, C#, SQL, MySQL, Microsoft Office

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2mo

Mobile Engineering Manager

Culver City or Linthicum or Allen or Chicago or Orlando or Baton Rouge or Phoenix or Waltham or Harrisburg or Knoxville or Richmond or West Valley City or San Diego or Indianapolis or Lexington or Parma or Little Rock or Asheville or Birmingham or Chantilly or Brooklyn or Washington or Fort Collins or San Mateo or Schaumburg or Atlanta

$180k-$220k/yr OnsiteFull Time

Motorola SolutionsNYSE: MSI: Provides safety and security technology for government and enterprise.

7+ YOE2+ Mgmt7+ years mobile development; 2+ years leading a team; US work authorization; employer sponsorship not provided.

Swift, Objective-C, Kotlin, Java, React Native, CI/CD, cloud technologies, RESTful APIs, relational databases

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Associate AI Security Resident

Washington or San Francisco or Santa Monica or Pittsburgh or Boston

$90k-$177k/yr HybridFull Time

RAND: Provides research and analysis for public policy and security.

1+ YOETechnical security/engineering background; leadership experience; programming in Python/Java/C/C++; threat modeling; strong communication; policy analysis; collaboration; MS Office.

Python, Java, C/C++, Threat modeling, MS Office

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2mo

Security Verification Test SWE

Annapolis Junction, Maryland, United States

$100k-$200k/yr OnsiteFull Time

WOOD Consulting Services: Providing technology and engineering services for federal intelligence missions.

8+ YOE8+ years experience in software development, secure software practices, test automation, and agile environments; U.S. citizenship with active TS/SCI clearance with polygraph; full-time on-site role in Annapolis Junction, MD; salary $100,000-$200,000 per year.

Java, scripting languages, embedded software, DevOps, test automation tools

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1mo

Genomics Computational Systems Biologist

Frederick, Maryland, United States

$140k-$160k/yr OnsiteFull Time

Cape Fox Federal Integrators: Provides government agencies with professional, technical, and training services.

5+ YOEMaster's degree in biomedical science, bioinformatics, math, or computer science; 5+ years experience; HPC, Linux, scripting; NGS data analysis; Python/Perl/Shell/R/C++/Java; U.S. citizen; Tier 1 background check; travel.

HPC, Linux, Python, Perl, Shell, R, C++, Java, Next Generation Sequencing, Oxford Nanopore, Illumina, Pipeline automation, Bioinformatics tools

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1mo

Computer Science Teacher - Upper School

Bethesda, Maryland, United States

$70k-$100k/yr OnsiteFull Time

Holton-Arms School: Private college-preparatory school for girls in grades 3–12.

Teach Upper School CS to grades 9-12; develop and implement CS curriculum; bachelor’s degree; experience teaching programming (Python, JavaScript, Java); collaborate across grades.

Python, JavaScript, Java