Junior Software Engineer Python Jobs in Fredericksburg, VA, US

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Junior Software Engineer

Warrenton or State College or Fort Eisenhower or Centennial

OnsiteFull Time

Altamira TechnologiesNYSE: PSN: Provides data analytics and engineering for national security missions.

Bachelor’s in CS/CE/EE or related field; strong Java and JavaScript/Typescript experience; experience with Python, Angular, ELK, Redis, REST, Docker/Kubernetes; TS/JS stack experience preferred; Must have Top Secret clearance.

Java, JavaScript, TypeScript, Python, Angular, React, ElasticSearch, ELK stack, Redis, REST, Docker, Kubernetes, Helm, NoSQL, SQL, Xmidas

1mo

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1mo

Junior Software Developer

McLean, Virginia, United States

OnsiteFull Time

Prescient Edge: Provides intelligence, security, and defense support services.

BS in CS/CE or equivalent, US citizen, software development experience, able to lift 20-50 lbs, willing to travel up to 25%, ability to obtain/maintain Secret/Sensitive clearance.

Java, JavaScript, Python, SQL, OWL, CSS, C++, C#, Bootstrap, XML, HTML, WSD1L

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Junior Software Engineer - Intern

Fairfax, Virginia, United States

OnsiteInternship

ECSNYSE: ASGN: Provides advanced technology and engineering services to government agencies.

US Citizen; pursuing Bachelor's or Master’s in Computer Science or Engineering; programming in Python, C++, Java; Linux familiarity; strong teamwork, writing, and presentation skills; ability to learn quickly in a fast-paced environment; self-motivated.

Python, C++, Java, Linux

1mo

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1mo

Software Developer – Junior (Team 01)

Washington, District of Columbia, United States

$100k-$115k/yr OnsiteFull Time

AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.

1+ YOEJunior software developer with 1+ year experience in backend/full-stack; TS/JS/Java/Go/Python/.NET; Agile; Git; TS/React; Top-Secret clearance with SCI eligibility; BS in CS/IS/Engineering or related field.

Java, JavaScript, Go, Python, Typescript, .NET, Java Spring, Node.js, Go Gin, AngularJS, React, NextJS, Hibernate, Struts, Git, Jira, Jenkins, Terraform, Nexus, Ansible, Ansible Tower, AWS, Azure, Linux, Windows Server

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Cleared Junior Software Engineer

Annapolis Junction, Maryland, United States

OnsiteFull Time

Yellow Duck Technologies: Engineering mission-critical software and systems for the intelligence community.

3+ YOEActive TS/SCI clearance with Full Scope Polygraph; 3+ years of experience; bachelor's degree in a technical discipline; experience with Python, JavaScript, or Java; familiarity with databases and version control; strong communication.

Python, JavaScript, Java, Databases, Git

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Junior Software Engineer

Chantilly, Virginia, United States

OnsiteFull Time

Bridge Core: Provides technical services and cybersecurity solutions to government agencies.

3+ YOEBS degree with 3-5 years of experience; Java/Springboot/AWS; REST APIs; Linux; scripting; Git; CloudFormation; PKI is desirable.

Java, Spring, AWS, Git, CloudFormation, Docker, Kubernetes, PostgreSQL, MySQL, Linux, Python, Bash, XML, JSON, YAML

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Software Engineer, Junior

McLean or Alexandria

$55k-$126k/yr OnsiteFull Time

Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.

2+ YOETwo+ years in software development with React/Angular/Python; OO, REST/microservices; AI systems knowledge; ability to obtain Secret clearance; Bachelor's degree.

React, Angular, Python, REST, Microservices, MLflow, Kubernetes, Docker, Jenkins, SQL, NoSQL, AWS

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Junior Software Developer

Fort Belvoir, Virginia, United States

OnsiteFull Time

Applied Research Associates: Provides scientific research and engineering solutions for complex problems.

2+ YOEBS/MS in CS/Software Eng; 2+ years experience or MS; proficient in Java, Python, Golang; web tech HTML/CSS/JS and frameworks (Angular, Vue, React); Agile, Git, CI/CD; strong documentation.

Java, Python, Golang, HTML, CSS, JavaScript, Angular, Vue, React, Git, CI/CD, Docker, Kubernetes, PostgreSQL, MySQL, Redis, MongoDB

1mo

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1mo

Software Engineer - Java, Python, node.js, JavaScript, HTML (2026-0065)

Reston, Virginia, United States

OnsiteFull Time

Acclaim Technical Services: Provides language and intelligence services to U.S. federal agencies.

2+ YOEBachelor's degree in engineering or related field; 2+ years software engineering experience; proficiency in Java, Python, Node.js, JavaScript, HTML.

Java, Python, Node.js, JavaScript, HTML

1mo

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1mo

Junior Developer

Rosslyn, Virginia, United States

OnsiteFull Time

ActioNet: Provides IT modernization and cybersecurity services for government agencies.

0+ YOEEntry-level software developer with 0–3 years of experience; strong foundation in programming; basics of Python, Java, or C#; familiar with Agile/Scrum; good communication and documentation skills; willingness to learn; Azure Dev/Cert preferred.

Python, Java, C#, Agile, Scrum, Azure, Microsoft Certified: Azure Developer Associate

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Software Developer

Alexandria, Virginia, United States

$75k-$102k/yr OnsiteFull Time

Space Ground System Solutions: Provides engineering services for satellite ground systems and space missions.

5+ YOE0-5 years of software engineering experience; knowledge of high-level programming languages; Bachelor's degree in Computer Science/Engineering or related field

Java, Go, JavaScript, C/C++, Python, RHEL, Docker, Kubernetes, Git, Bitbucket, Jira, HTML, CSS, React, REST, JSON, WildFly

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Software Engineer (Level 1)

Dulles, Virginia, United States

$76k-$114k/yr OnsiteFull Time

Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.

0+ YOEBachelor's degree or 0 years experience; software development with Python, C++, Bash; US citizenship; ability to obtain Top Secret clearance.

Python, C++, Bash, PostgreSQL, Ansible, Cloud infrastructure, PKI, Static code analysis

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Software Developer (Systems Software Expert

McLean, Virginia, United States

RemoteFull Time

Quevera: Software engineering and cloud solutions for government and defense.

TS/SCI clearance required; strong background in software development for intelligence analysis; experience with Python, PostgreSQL, AWS; full stack development in cloud environments; front-end and back-end skills.

Python, PostgreSQL, AWS, SQS, Docker, Kubernetes, CSS, HTML, JavaScript, Git

2mo

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2mo

Software Engineer

Tampa or Fort Belvoir

OnsiteFull Time

Odyssey Systems: Providing technical and engineering services to federal government agencies.

3+ YOEUS citizen; active secret clearance with ability to obtain TS/SCI; bachelor’s in CS/IS or related field with 3–6 years of experience; proficiency in Java/C#/Python/JS/TS; Git; REST/microservices; team collaboration; strong communication.

Java, C#, Python, JavaScript, TypeScript, Git, RESTful APIs, microservices, CI/CD, Docker, Kubernetes, Databases

1mo

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1mo

Junior Full Stack Software Engineer (DevSecOps)

Herndon, Virginia, United States

$80k-$128k/yr OnsiteFull Time

Peraton: National security and mission-critical government technology services provider.

2+ YOEBachelor’s or Master’s in relevant field; 2+ years of experience; active TS/SCI with poly; proficiency in Java, Python, JavaScript; REST/JSON; Docker; AWS; CI/CD.

React, Angular, Java, Python, FastAPI, Flask, PostgreSQL, MongoDB, DynamoDB, Elasticsearch, AWS, Docker, Kubernetes, Jenkins, GitLab CI, GitHub Actions, Terraform, CloudFormation, Cypress, Selenium, JUnit, Pytest, Jest, Confluence, Jira, OAuth, JWT, Swagger, REST API

1mo

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1mo

Modernization Engineer (Junior)

Manassas, Virginia, United States

OnsiteFull Time

Spear AI: Develops AI software and sensors for maritime defense operations.

0+ YOESoftware engineer with Rust, C/C++, Docker/Kubernetes, CI/CD, Terraform or Pulumi, Python; Kafka/Redpanda experience; IoT, GIS a plus; passionate about code quality and performance.

C/C++, Rust, Kafka/Redpanda, Docker, Kubernetes, CI/CD, Terraform, Pulumi, Python

2mo

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2mo

Entry Level Software Developer

Sterling, Virginia, United States

HybridFull Time

Nightwing: Provides cybersecurity and intelligence solutions for government agencies.

0+ YOEBachelor's in CS/Software Engineering or related field; less than 2 years' experience; ability to obtain US government security clearance; US citizenship.

Git, Java, Python, AWS, Azure, SCRUM

3mo

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3mo

Software Engineer (TS/SCI) {S}

Chantilly, Virginia, United States

OnsiteFull Time

ARKA Group: Develops advanced technology solutions for space and defense missions.

4+ YOEActive TS/SCI clearance; degree in CS/EE/Physics or related field or 4 years software/signals experience; interest in remote sensing; proficient in Python/C++/Rust or similar; Linux and/or AWS familiarity.

Python, C++, Rust, Linux, AWS

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Full Stack Developer, Junior

McLean, Virginia, United States

$53k-$108k/yr HybridFull Time

Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients

1+ YOEJunior full stack developer with 1+ years of software engineering experience; bachelor's degree; ability to obtain Secret clearance; proficiency in front-end and back-end languages; experience with Agile environment.

Java, Python, C#, C, C++, NET, JavaScript, React, NodeJS, PHP, Drupal

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Intern- Software Engineer

Herndon, Virginia, United States

$25/hr HybridInternship

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

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Associate Software Engineer

Manassas, Virginia, United States

OnsiteFull Time

VTG: Provides force modernization and digital transformation for defense agencies.

Bachelor’s or master’s in STEM; experience with Java, C++, Python; Git; Linux; US citizen with ability to obtain SECRET clearance; background check.

Java, C++, Python, Git, GitHub, GitLab, Linux, RHEL, Kubernetes, Docker, Podman, KVM, Helm, Jenkins, Ansible, GitOps, Nexus, Robot Framework, Shell scripting, CI/CD, Networking

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Software Engineer - CTJ - Poly

Reston or Annapolis Junction

$84k-$165k/yr OnsiteFull Time

Microsoft: Provides software, cloud computing, and hardware technology products.

0+ YOEBachelor's degree in computer science or related technical field; experience coding in multiple languages including C, C++, C#, Java, JavaScript, or Python; ability to obtain security clearance.

C, C++, C#, Java, JavaScript, Python

2mo

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2mo

AWS Connect Developer - Junior

Washington, District of Columbia, United States

HybridFull Time

Blue Rose Consulting Group: Provides IT and human capital consulting for government agencies.

2+ YOEJunior AWS Connect Developer with 2 years Python and AWS experience; US Citizenship; Public Trust; hybrid in DC; Terraform preferred.

Python, AWS, Lambda, S3, DynamoDB, Git, GitLab, Terraform

2mo

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2mo

Associate Software Engineer

Arlington or Mount Laurel

$72k-$114k/yr OnsiteFull Time

Innovative Defense Technologies: Develops automated software integration and testing solutions for defense.

0+ YOE0–2+ years backend development; BS in a related field; proficient in Python/Java/C++/C#; ability to travel; knowledge of SDLC; APIs and databases; distributed systems; security practices.

Python, Java, C++, C#

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Cleared Software Engineer

Chantilly, Virginia, United States

$69k-$116k/yr OnsiteFull Time

General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.

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

1mo

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1mo

Software Engineer

Chantilly, Virginia, United States

OnsiteFull Time

Novel Applications of Vital Information: Provides IT and cybersecurity services for government agencies.

US citizenship required; active TS/SCI with Full Scope Polygraph; residency within 50 miles of Chantilly, VA; 100% onsite daytime; full-time; security clearance required.

Java, JavaScript, Bash, Python, AWS, Solr, Elasticsearch, Spring Boot, RESTful APIs, Linux, JIRA, GitHub

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Associate Software Engineer

Reston, Virginia, United States

OnsiteFull Time

Metron: Develops scientific software and mathematical models for national security.

Bachelor’s degree in computer science, mathematics, physics, or related field; proficiency in Java, TypeScript, Python, or C++; strong OO programming; full-stack web development experience; US citizenship with eligibility for security clearance.

Java, TypeScript, Python, C++, MongoDB, RabbitMQ, Spring Boot, React, Redux, WebGL, OpenGL

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Software Engineer - 90402844 - Washington DC, Philadelphia PA or Wilmington DE (US)

Washington or Wilmington or Philadelphia

$72k-$93k/yr OnsiteFull Time

Amtrak: Operates America's national intercity passenger railroad system.

1+ YOEBachelor’s degree or equivalent; 1+ year software engineering; Java, Python, SQL; frontend/backend development; CI/CD and cloud; onsite in DC/DE/PA.

Angular, React, Java, Python, SQL, NoSQL, AWS, Azure, CI/CD

1mo

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1mo

Backend Software Engineer

Reston, Virginia, United States

RemoteFull Time

Game Plan Tech: Building secure cloud and AI systems for government.

Back-end developer proficient in Java or Python, databases (SQL/NoSQL), Git/CI/CD, cloud platforms (GCP/AWS/Azure), containers (Docker/Kubernetes), and REST APIs.

Java, Python, Git, CI/CD, Docker, Kubernetes, GCP, Azure, AWS, SQL, NoSQL, REST APIs

2mo

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2mo

Forward Deployed Software Engineer - Tactical Edge

Washington, District of Columbia, United States

$135k-$200k/yr OnsiteFull Time

PalantirNasdaq: PLTR: Builds software for data-driven decisions and operations.

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

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Junior Palantir / Maven Product Engineer

Herndon, Virginia, United States

OnsiteFull Time

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

3mo

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3mo

Software Engineer (TS/SCI) {S}

Chantilly, Virginia, United States

OnsiteFull Time

ARKA Group: Provides advanced technology solutions for space and defense missions.

Active TS/SCI clearance; degree in CS/EE/Physics or related; programming in Python/C++/Rust; Linux/cloud experience; onsite work; strong problem-solving.

Python, C++, Rust, Linux, AWS

2mo

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2mo

Software Engineer Intern

Alexandria, Virginia, United States

$20/hr OnsiteFull Time, Internship

American Society of Clinical Oncology: Professional organization supporting cancer care through research and education.

0+ YOECurrently enrolled in undergraduate or graduate program; experience with AWS, GCP, or Azure; Python programming; git; Office; strong communication; able to work in fast-paced team.

Amazon Web Services, Google Cloud Platform, Microsoft Azure, Git, GitHub Copilot, Terraform

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Chapter Next Returnship - Software Engineer (Java, C++)

Manassas, Virginia, United States

OnsitePart Time

Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.

1+ YOEBachelor's in CS/Software/Computer Engineering plus 1 year exp; Linux/Unix; Java/C++ development; Bash/Python scripting; US Citizenship; security clearance required.

Java, C++, Linux, Unix, Bash, Python

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Software Development Engineer I

Washington or Reston or San Diego or San Francisco or Wilmington or Phoenix or Los Angeles or Houston or Boston or Austin or Atlanta or Raleigh or Baltimore or New York or Dallas or Palo Alto or Short Hills or Minneapolis or Chicago or Seattle or Philadelphia or Miami

$37-$59/hr HybridFull Time

DLA Piper: Global law firm providing comprehensive legal and business services.

1+ YOE1-3 years programming with Node.js, Python, C#, Razor, MVC; SQL databases; JavaScript frameworks; HTML/CSS; strong communication.

Node.js, Python, C#, Razor, MVC, Visual Studio Code, MS Graph, APIs, Git, Azure DevOps, SQL, HTML, CSS, JavaScript

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Jr Full Stack Developer (Python/React.js)

Reston, Virginia, United States

$70k-$100k/yr OnsiteFull Time

Inadev: Provides digital engineering and AI solutions to government and businesses.

2+ YOEBachelor's in CS/Engineering; 2+ yrs Python and React; experience with AI-assisted development; microservices; Agile/Jira; US citizen; located in DC metro area.

Python, React.js, GitHub Copilot, Microservices, JIRA, AWS, Docker, Kubernetes, PostgreSQL, MongoDB, DynamoDB

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Software Engineering Intern II, Summer 2026

Arlington, Virginia, United States

$46k-$63k/yr OnsiteInternship, Temporary

BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.

0+ YOEUndergraduate student in Software Engineering, Computer Science, or Computer Engineering; programming experience in C, C++, Java, or Python; strong communication; self-motivated; eligible for US DoD security clearance.

C, C++, Java, Python

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AI Engineer Intren

McLean, Virginia, United States

OnsiteFull Time, Internship

BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.

3+ YOEEnrolled student pursuing a Bachelor's in CS/Data/Software/Computer Engineering; experience with AI/ML libraries; Python and programming skills; strong communication; self-starter with initiative.

TensorFlow, PyTorch, Scikit-learn, Keras, Python

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Software Engineering Intern II, Summer 2026

Arlington, Virginia, United States

$46k-$63k/yr OnsiteInternship

BAE SystemsLondon Stock Exchange: BA.: Produces advanced defense, aerospace, and information security systems.

0+ YOEUndergraduate student in Software Engineering, CS, CE, or related field; programming in C, C++, Java, or Python; strong communication; self-motivated; eligible for US DoD security clearance.

C, C++, Java, Python, Git