Junior Software Engineer Python Jobs in Berryville, 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

Junior Software Engineer

Ashburn, Virginia, United States

OnsiteFull Time

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

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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 C# Software Engineer

Bethesda, Maryland, United States

$67k-$133k/yr HybridFull Time

CACINYSE: CACI: Provides information technology and professional services to government clients.

0+ YOEEntry-level C# and Python software engineer with US citizenship, secret clearance, and a BS in CS/SE/aerospace; 0-3 years; strong problem solving and communication.

C#, Python

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Junior Software Developer

Springfield or Merrifield

$79k-$170k/yr HybridFull Time

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

6+ YOEBachelor's plus 2 years or Associate's plus 4 years or 6+ years in related field; AWS, GitLab, API design, Java/Python/JavaScript experience; TS/SCI with Poly clearance.

AWS, GitLab, Java, Python, JavaScript, CDK, Solr, Jira, Confluence

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

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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

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Software Test Engineer

Germantown, Maryland, United States

$56k-$74k/yr HybridFull Time

WabtecNYSE: WAB: Manufacturer of equipment and digital solutions for rail transportation.

Bachelor’s degree in Electrical Engineering, Computer Science, Computer Engineering, Software Engineering; embedded systems knowledge; strong communication; entry-level with internship experience preferred.

Python, C, C++, Windows, Linux, IBM ELM, test automation tools

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Junior/Mid Full Stack Software Engineer

Bethesda, Maryland, United States

RemoteFull Time

Black Canyon Consulting: Provides specialized IT and scientific support to federal agencies

1+ YOE1–4 years experience; strong Python; React/Next.js; APIs (GraphQL/REST); Docker; Linux; authentication; automated testing; full-stack exposure.

Python, React, Next.js, GraphQL, REST, Docker, Linux, Selenium, Testing frameworks

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

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NLM Software Engineer I

Bethesda, Maryland, United States

$70k-$95k/yr OnsiteFull Time

Lexical Intelligence: Develops NLP software for biomedical research and portfolio analysis.

2+ YOE2+ years software development experience; BS/degree in CS/SE; proficiency in Python/Java/JavaScript/C++/R/SQL; SDLC and secure coding; web app development; Git; strong communication; US work authorization with Public Trust clearance.

Python, Java, JavaScript, C++, R, SQL, Matlab, SAS, ETL, MySQL, MongoDB, Jupyter Notebooks, Git, GitHub, GitLab, Linux, Docker, Kubernetes, REST, AWS, Google Cloud, Azure, CI/CD, US-CERT, OWASP

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

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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

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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

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

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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

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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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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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Cyber Software Engineering Intern

Herndon, Virginia, United States

OnsiteInternship

Lockheed MartinNYSE: LMT: Designs and builds aerospace and defense technology systems.

Enrolled in Computer Science/Engineering; experience in C/C++/Python; Linux; US citizenship; ability to obtain government clearance.

C, C++, Python, Linux

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Dev/ MLOps Engineer I (Full Stack)

Rockville, Maryland, United States

$95k-$120k/yr HybridFull Time

Origin AI: AI-powered WiFi sensing for human presence and activity detection.

0+ YOE0–3 years of software engineering/DevOps/MLOps experience; strong Python, Bash, SQL; CI/CD and cloud familiarity.

Python, Shell scripting, SQL, GitHub Actions, Jenkins, Docker, Kubernetes, Terraform, CloudFormation, AWS, Azure, GCP, NoSQL, Grafana, Prometheus, CloudWatch, JavaScript, TypeScript, API development, IoT, Distributed systems

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2026 Emerging Missions Flight Dynamics Engineer

El Segundo or Huntsville or Chantilly or Colorado Springs or Albuquerque

$100k-$140k/yr HybridFull Time

The Aerospace Corporation: Provides technical expertise and research for national space programs.

1+ YOEMaster’s or PhD in engineering/science; 0-1 years experience; astrodynamics, trajectory design, software; C/C++, Python, MATLAB; travel; ability to obtain security clearance.

C, C++, Python, Fortran, MATLAB

1mo

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1mo

National Security Solutions (NSS) Internship – Software Engineering Intern

Chantilly, Virginia, United States

OnsiteInternship, Full Time

KBRNYSE: KBR: Provides engineering, technology, and professional services for global markets.

Pursuing science or engineering degree; proficient in Python and/or MATLAB; strong math and problem solving; able to work independently and in a team; clear communication.

Python, MATLAB

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Intern Security Data Engineering & Software Development (McLean, VA, US)

McLean, Virginia, United States

OnsiteInternship

SESEuronext Paris: SESG: Provides global satellite-based video and data connectivity services.

Internship focused on data engineering and software development, migrating Python/Excel workflows to SQL-backed architecture with a secure frontend.

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AI Engineer

Leesburg, Virginia, United States

RemoteFull Time

Anika Systems: Provides technology solutions and consulting for federal agencies.

1+ YOEBachelor's in CS/CE/Data Science; 1-3 years ML/NLP; Python/TypeScript; LLM integration; AWS; PostgreSQL; OAuth/OIDC; security/compliance.

Python, TypeScript, FastAPI, React, OpenAI, Anthropic, Bedrock, Vertex, Azure OpenAI, AWS, Terraform, PostgreSQL, OAuth, OIDC, JWT

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Platform Innovation Engineer (Rockville, MD, US, 20850)

Rockville, Maryland, United States

$54k-$70k/yr OnsiteFull Time

AramarkNYSE: ARMK: Provides food and facility management services to diverse organizations.

Bachelor's in CS/Engineering/Data or related; SQL/Python/cloud/tools experience; interest in AI-enabled systems; eager to experiment; strong communication.

Snowflake, Azure, Matillion, Power Platform, Power BI, Python, SQL, AI tooling

1mo

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1mo

Jr. Data Science Engineer

Rockville, Maryland, United States

$80k-$90k/yr RemoteFull Time

Axle Informatics: Provides bioscience and IT solutions for biomedical research.

0+ YOEBachelor’s degree (or currently pursuing) in CS, data science, bioinformatics, statistics, engineering, or related field; experience or coursework in JavaScript/TypeScript and/or Python; familiarity with full-stack concepts; Node.js and Angular; RESTful APIs; Git; Agile/SCRUM; basic testing/debugging.

Node.js, Angular, JavaScript, TypeScript, Python, REST, Git, Agile, Testing frameworks

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Software Engineering Associate Consultant (Graduating Dec 2025- Summer 2026)

Charlotte or Reston or Richmond

HybridFull Time

CapTech: Provides technology and management consulting services to large enterprises.

0+ YOEEntry-level software engineering role; bachelor’s or accelerated master’s in CS/CE/IT with graduation Dec 2025 or Spring/Summer 2026; internship/ project experience; strong communication and analytical skills.

Java, NET, CSharp, Python, Go, Android, iOS, JavaScript, React, Angular, Node.js, AWS, GCP, Azure