Python Developer Jobs in McLean, VA, US

Save

Mark Applied

Hide

Software Developer

Chantilly, Virginia, United States

OnsiteFull Time

Bespoke Technologies: Provides technical engineering and data solutions for national security.

5+ YOEExperienced software developer with on-site position in Chantilly, VA; poly clearance required; strong cloud, Python/Java, and AWS skills.

Java, Python, Elasticsearch/OpenSearch, AWS, Docker, Linux, SQL, S3, Lambda, SQS, SNS, IAM, DynamoDB, CDK, CloudFormation, Terraform

1mo

Save

Mark Applied

Hide

1mo

Senior Developer

Rosslyn, Virginia, United States

OnsiteFull Time

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

7+ YOELead design and development of software; 7–12 years in software development; proficient in Python, Java, or C#; Agile, Scrum, and SAFe; strong leadership and API integration; cloud and big data experience preferred.

Python, Java, C#, Agile, Scrum, SAFe, Cloud, Big Data, API development, Microservices

Save

Mark Applied

Hide

CNO Developer

Fort George G Meade, Maryland, United States

$77k-$163k/yr OnsiteFull Time

Nightwing: Provides advanced cyber and intelligence solutions for national security.

5+ YOE5-7 years in C/C++ and Python; strong OS internals; knowledge of binary analysis tools; security-focused software development.

Python, C++, C, IDA Pro, Ghidra

1mo

Save

Mark Applied

Hide

1mo

Mid Level Developer

Rosslyn, Virginia, United States

OnsiteFull Time

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

3+ YOE3–7 years software development; Bachelor's in CS/IT; Python/Java/C#; Agile/Scrum/SAFe; RESTful APIs; databases; security standards.

Python, Java, C#, REST, APIs, SQL, NoSQL, Agile, Scrum, SAFe, Cloud

1mo

Save

Mark Applied

Hide

1mo

Analytics Developer

Bethesda or United States

$85k-$141k/yr OnsiteFull Time

Guidehouse: Provides management, technology, and risk consulting services globally.

3+ YOE3+ years analytics development; strong SQL; BigQuery; web analytics; BI tools; Python; APIs; US citizenship and public trust eligibility.

SQL, BigQuery, Google Analytics, Google Tag Manager, Power BI, Tableau, Python, APIs

Save

Mark Applied

Hide

Senior Software Developer

Fort Belvoir, Virginia, United States

OnsiteFull Time

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

6+ YOESenior software developer with 6-10 years of experience in software development; strong Java, Python, web tech, cloud, containers; Agile leadership; TS/SCI upgrade path.

HTML, CSS, JavaScript, Angular, Python, Java, Golang, Vue, React, AWS, Azure, GCE, Docker, Kubernetes, Helm, CI/CD, SQL, NoSQL, Postgres, MySQL, Redis, MongoDB

Save

Mark Applied

Hide

iOS Developer

Reston, Virginia, United States

OnsiteFull Time

BigBear.aiNYSE: BBAI: Provides AI-powered decision intelligence software for national security.

3+ YOETS/SCI clearance or ability to obtain; 3+ years of experience; Python and C; reverse engineering iOS/macOS on ARM/x86; exploit development; Git

Python, C, Git, Objective-C, Swift, C++

Save

Mark Applied

Hide

Software Developer

Chantilly, Virginia, United States

OnsiteFull Time

V2XNYSE: VVX: Provides logistics, facility management, and mission support services.

Bachelor's degree in Computer Science, IT, Mathematics or equivalent experience; Python development experience; Linux OS or equivalent; Active TS/SCI with Polygraph; willingness to polygraph.

Python, Linux, Bash, Software Development

2mo

Save

Mark Applied

Hide

2mo

Software Engineer

Washington, District of Columbia or New York or Remote

$100k-$130k/yr HybridFull Time

Slate: Online magazine and podcast network providing news and analysis.

Experience in full stack web development, JavaScript/Python, scaling content, and publishing workflows.

Node.js, Vue.js, Python, Django, Redis, Postgres, React Native, Docker

Save

Mark Applied

Hide

Meteorological Developer

College Park, Maryland, United States

$80k-$120k/yr OnsiteFull Time

University of Maryland: Public research university providing undergraduate and graduate degree programs.

2+ YOEBachelor's in Atmospheric Science, Meteorology, Computer Science, Information Sciences, or related field; 2+ years software development/data visualization; Linux server environment; web development (JavaScript, HTML5, CSS, PHP); Python; SQL; version control.

JavaScript, React, jQuery, HTML5, CSS, PHP, Python, SQL, Linux, Bash, PostgreSQL, MariaDB, MS SQL Server

2mo

Save

Mark Applied

Hide

2mo

Test Engineer

Annapolis Junction, Maryland, United States

$87k-$198k/yr HybridFull Time

Booz Allen HamiltonNYSE: BAH: Provides management and technology consulting to government and commercial clients.

1+ YOEExperience with automated testing, Python development, DevOps, and CI/CD; TS/SCI clearance with polygraph.

Python, PyTest, unittest, nose2, doctest, Robot, tox, hypothesis, CI/CD, Splunk, Jenkins

1mo

Save

Mark Applied

Hide

1mo

Software Developer

Dahlgren, Virginia, United States

OnsiteFull Time

Technical Intelligence Solutions: Provides specialized engineering and cloud solutions for defense missions.

3+ YOE3+ years in software development; OO programming in Python/Go/C#/Java; version control; CI/CD (GitLab); containerization; PowerShell/Bash automation; HS diploma or GED.

Python, Go, PowerShell, Bash, Git, DOTNET, C#, Java, JavaScript, SQL, Linux, Windows, Docker, Kubernetes, Rancher, PostgreSQL, MySQL, SQL Server, MongoDB, jQuery, d3, React, Vue, AWS, Azure, APIs

2mo

Save

Mark Applied

Hide

2mo

Perception Engineer

Clarksburg, Maryland, United States

$130k-$180k/yr OnsiteFull Time

Forterra: Develops autonomous driving systems for defense and industrial applications.

2+ YOEDevelop and maintain C++/Python perception software; collaborate across autonomy teams; travel to test sites.

C++, Python, Linux, Docker, Git, CI/CD, Bash, Automation

1mo

Save

Mark Applied

Hide

1mo

Back End Developer/Engineer (MBI Clearance)

Columbia, Maryland, United States

$120k-$140k/yr HybridMultiple Commitments Available

iCallidus: Provides information technology and cybersecurity services to federal agencies.

7+ YOE7+ years back-end development; proficient in Java, Python, .NET, Node.js; REST/microservices; databases; cloud platforms; secure coding; MB I clearance preferred.

Java, Python, NET, Node.js, PostgreSQL, MySQL, MongoDB, SQL Server, REST, Microservices, AWS, Azure, GCP, OWASP

1mo

Save

Mark Applied

Hide

1mo

Software Engineer Level 4

Annapolis Junction, Maryland, United States

OnsiteFull Time

Base-2 Solutions: Delivers engineering and technology services for national security.

Backend developer with data engineering and API development; Python, FastAPI, PostgreSQL, Elasticsearch; TS/SCI with CI Poly.

Python, FastAPI, PostgreSQL, Elasticsearch

Save

Mark Applied

Hide

Software Engineer

Chantilly, Virginia, United States

$69k-$158k/yr OnsiteFull Time

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

2+ YOE2+ years in software development; Java, Python, Rust, or Go; microservices; TS/SCI clearance; Bachelor's degree.

Java, Python, Rust, Go, Docker, Kubernetes, Linux, AWS, Azure, Google Cloud, C, C++, C#, JavaScript, React, Node.js

23h

Save

Mark Applied

Hide

23h

Software Engineer

Herndon or Colorado Springs or Dayton

$95k-$195k/yr HybridFull Time

Auria: Engineering and software solutions for space and defense missions.

Develop software in Agile teams; Linux, microservices, REST APIs; Python/JavaScript; CI/CD; security clearance.

Python, JavaScript/React, RabbitMQ, REST APIs, CI/CD, GitHub, GitLab, Jira, Selenium, Behave, Sphinx

1mo

Save

Mark Applied

Hide

1mo

Software Developer – Mid (Team 04)

Washington, District of Columbia, United States

$135k-$150k/yr OnsiteFull Time

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

5+ YOETop-Secret clearance, 5+ years of software development experience, Bachelor's degree or equivalent, strong backend development in Java/JavaScript/Go/Python/.NET, experience with frameworks and agile development.

Java, JavaScript, Go, Python, .NET, Spring, Nodejs, NestJS, Gin, Hibernate, Struts, Git, CI/CD, AWS, Jira, Confluence, Splunk, SAFe

2mo

Save

Mark Applied

Hide

2mo

Senior CNO Developer

Arlington, Virginia, United States

$144k-$216k/yr OnsiteFull Time

Two Six Technologies: Sells cybersecurity software and research for national security.

5+ YOESenior CNO Developer with Top Secret/SCI clearance, 5+ yrs exp, Python/C/C++, OS internals, networking, reverse engineering, embedded systems, and PoC development.

Python, C, C++, WinDbg, GDB, Binary Ninja, Ghidra, Wireshark, Linux, Embedded systems, Firmware analysis

1mo

Save

Mark Applied

Hide

1mo

Software Developer

Springfield, Virginia, United States

$118k-$201k/yr OnsiteFull Time

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

3+ YOEBachelor’s degree in CS/IS/Engineering; at least 3 years development experience; proficiency in Python, Java, Perl, Angular, HTML/CSS, XML, Tomcat/Solr, Oracle, Postgres; experience in cloud and REST APIs.

Python, Java, Perl, Angular, HTML, CSS, XML, Apache Tomcat (Solr), Alfresco, Oracle, Postgres, REST APIs, AWS

1mo

Save

Mark Applied

Hide

1mo

Application Developer/Reverse Engineer

Annapolis Junction, Maryland, United States

$70k-$190k/yr OnsiteFull Time

Belay Technologies: Provides specialized technology and engineering services to the DoD.

12+ YOETS/SCI clearance with polygraph; 12 years' experience with B.S. or 10 years with M.S.; dataflow pipelines; NiFi; containerization; Linux development; Atlassian tools; Python/Go/Java; open-source tool deployment; SIGINT knowledge; 4+ years dataflow

NiFi, Jira, Confluence, Python, Go, Java, OpenTelemetry, OpenObserve, Svelte

2mo

Save

Mark Applied

Hide

2mo

Applications Developer

McLean, Virginia, United States

OnsiteFull Time

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

0+ YOEExperience developing and deploying data-centric applications; cloud microservices; SQL databases; NiFi ETL; Python/Java; Git; Docker; CI/CD; AWS and Terraform; web technologies (HTML/CSS/JS/Flask).

Amazon S3, Amazon RDS, Amazon EC2, MySQL, PostgreSQL, NiFi, Python, Java, Flask, Docker, Terraform, Git, Jenkins, Jira, Confluence, Anaconda, Bash, HTML5, CSS, JavaScript, SQL, PL/SQL

1mo

Save

Mark Applied

Hide

1mo

Full Stack Developer

Falls Church, Virginia, United States

$170k-$230k/yr HybridFull Time

GDITNYSE: GD: Delivers IT systems and mission services to government agencies.

5+ YOE5+ years in full stack development; bachelor’s in CS/CE/SE; JavaScript/TypeScript or Python; React/Next.js/Angular; Node.js; Python FastAPI; Azure cloud; DevOps/CI/CD; US citizenship not required.

Azure, FastAPI, React, JavaScript, TypeScript, Python, Node.js, Next.js, Angular, SQL, NoSQL, Vector database, Cloud (Azure, AWS, GCP), CI/CD, DevOps

Save

Mark Applied

Hide

Agile Developer, Cyber & Data Resilience

Washington, District of Columbia, United States

OnsiteFull Time

Kroll: Provides global risk and financial advisory solutions.

12+ YOESenior Agile Developer with Java Spring Boot, Python, AWS; TS/SCI with FS Poly; 12+ years of software development; on-site SCIF at Fort Meade, MD.

Java, Spring Boot, Python, AWS, REST API, Kubernetes, Docker, GitLab, Maven, Ansible, Cypress, Cucumber, OpenSearch, ElasticSearch, MongoDB, DynamoDB, OAuth/OIDC, GitOps, CloudWatch, Lambda, Step Functions

Save

Mark Applied

Hide

Software Developer - TS/SCI

Chantilly, Virginia, United States

$104k-$181k/yr OnsiteFull Time

ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.

5+ YOE5+ years software design/development, TS/SCI clearance, Linux experience, Python/C/C++, bachelor's or higher in engineering or CS.

Python, C/C++, Linux, AWS, Docker, Kubernetes, PyTorch, TensorFlow, OpenCV, Git, Qt/PyQt, Android, CUDA

2mo

Save

Mark Applied

Hide

2mo

Senior Software Developer

Hanover, Maryland, United States

OnsiteFull Time

VTG: Provides engineering and digital modernization for defense and national security.

20+ YOETwenty years of software development; multi-language proficiency (Java, Python, Rust, C++, Golang); Top Secret/SCI with Poly clearance.

Java, Python, Rust, C++, Golang, Docker, Kubernetes

Save

Mark Applied

Hide

Application Software Developer (Full Stack Developer)

Herndon, Virginia, United States

RemoteFull Time

VivSoft Technologies: Delivers cloud, DevSecOps, and AI solutions to federal agencies

10+ YOEExperienced full stack developer with 10+ years in software development; 5+ years in DevSecOps and cloud-hosted apps; strong Java, Python, AWS, React/Angular; CI/CD with Jenkins, GitHub, Artifactory; Jira/Confluence; API, databases (MySQL, PostgreSQL).

Java, Python, AWS, React, Angular, Jenkins, GitHub, Artifactory, Jira, Confluence, MySQL, PostgreSQL, JBoss, Spark, Vault

1mo

Save

Mark Applied

Hide

1mo

Software Developer Sr

Chantilly, Virginia, United States

OnsiteFull Time

AnaVation: Providing technical engineering and cybersecurity solutions for federal agencies.

8+ YOESenior software developer with at least 8 years of experience, TS clearance with SCI eligibility, SAFe experience, secure gov environment expertise, and strong Java/.NET/Python skills.

Java, DotNet, Python, RabbitMQ, Kafka, Redis, Elasticsearch, Splunk, Docker, Kubernetes, AWS GovCloud, Terraform, GraphQL, Angular, React, Svelte, Nifi

Save

Mark Applied

Hide

Software Engineer

Annapolis Junction, Maryland, United States

OnsiteFull Time

SilverEdge Government Solutions: Provides cybersecurity and software solutions for national security missions.

Experience designing, developing, and testing software; Python/C/C++; Linux; APIs/IPC; Git; debugging/integration; TS/SCI clearance.

Python, C/C++, Linux, Sockets, ZMQ, NATS, Git, Docker

Save

Mark Applied

Hide

Software Engineer / Front End Developer - Washington D.C

Washington, District of Columbia, United States

$104k-$156k/yr OnsiteFull Time

M.C. Dean: Designs and builds cyber-physical systems for mission-critical facilities.

5+ YOE5+ years in software architecture and enterprise front-end development; Angular/Angular Material; experience with IoT, REST APIs, Python; GCP; secure SDLC; DevSecOps; Agile.

Angular, Angular Material, Python, REST APIs, Linux/UNIX, Docker, Kubernetes, GCP, GitHub CI/CD, Jenkins, SonarQube

Save

Mark Applied

Hide

Senior AI Developer

Salt Lake City or Washington, District of Columbia

HybridFull Time

Cicero Group: Provides data-driven strategy and management consulting services.

5+ YOE5+ years of software development; 2+ years AI/ML; Azure OpenAI/Azure AI Foundry; Python; production-grade AI delivery; ability to work with client-facing teams.

Azure OpenAI Service, Azure AI Foundry, Python, LangChain, LangGraph, Copilot Studio, Power Platform

2mo

Save

Mark Applied

Hide

2mo

CNO Developer

Annapolis Junction, Maryland, United States

$140k-$200k/yr OnsiteFull Time

AeroVironmentNasdaq: AVAV: Designing and manufacturing autonomous systems and loitering munitions.

12+ YOEBachelor's in CS or related field; minimum 12 years software development; Linux/Windows/Embedded; C/C++/Python/Assembly; fielded software support; Atlassian tools; Git/Subversion; production CNO capabilities; active TS/SCI with polygraph.

Linux, Windows, Embedded, C, C++, Python, Assembly, Git, Subversion, Jira, Confluence

Save

Mark Applied

Hide

Summer 2026 Software Developer Internship

Annapolis Junction, Maryland, United States

$26-$35/hr OnsiteInternship, Full Time

GDITNYSE: GD: Delivers IT and mission services to government agencies.

0+ YOEC/C++, JavaScript, Java, Python software development; 0+ years experience; US citizenship.

Python, Java, C/C++, Rust, JavaScript, TypeScript

Save

Mark Applied

Hide

Senior Forward Deployed Engineer (React/Angular + Python + SQL)

Columbia, Maryland, United States

$140k-$150k/yr OnsiteFull Time

Blend360: Provides data science, AI, and marketing consulting services.

6+ YOE6+ years production experience; strong React/Angular, Python, and SQL; leadership and stakeholder communication.

React, Angular, Python, SQL, CI/CD, Docker, Testing

Save

Mark Applied

Hide

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

Save

Mark Applied

Hide

2mo

Full Stack Developer

Baltimore, Maryland, United States

$124k-$170k/yr RemoteFull Time

Index Analytics: Delivers data strategy and IT solutions to federal health agencies.

3+ YOEBachelor's degree or equivalent experience; 3 years in similar role; proficient in Java/Go/Python; API development platforms; AWS; API-first; Agile.

Java, Go, Python, AWS, API Gateway, Apigee, Kong, CMS, Snowflake, Databricks, CloudFormation, Jenkins

2mo

Save

Mark Applied

Hide

2mo

Embedded Developer Skill Level 2

Fort Meade, Maryland, United States

$170k-$210k/yr OnsiteFull Time

T-Rex Solutions: Provides IT modernization and cloud services to federal agencies.

10+ YOEEmbedded development with low-level programming in Windows/Linux/RTOS; C/C++ and Python; 10 years experience; onsite role.

C/C++, Python, Windows, Linux, RTOS, VxWorks, uC/OS

Save

Mark Applied

Hide

AI/ML Software Developer

Arlington, Virginia, United States

HybridFull Time

InterImage: Provides IT modernization and cybersecurity services to federal government agencies.

Strong Python experience, full-stack development, database design (SQL/NoSQL), data pipelines, familiarity with LLMs, API development, and CI/CD practices.

Python, REST API, GraphQL, SQL, NoSQL, CI/CD, Linux

Save

Mark Applied

Hide

ME00587-Agile Developer 5

Annapolis Junction, Maryland, United States

$160k-$220k/yr OnsiteFull Time

Momentum Engineering: Provides engineering and technical services for national security missions.

Senior Agile Developer to lead a 15-20 person team; strong AWS, Spring, Python, CI/CD, and microservices expertise; TS/SCI clearance required.

AWS, Spring, Python, OpenSearch, ElasticSearch, Microservice architecture, CI/CD tools, Maven, Gitlab, GitOps, Kubernetes, Docker, OAuth/OIDC, Cyprus, Cucumber