Python Developer Jobs in Gainesville, VA, US

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Application Developer

Annapolis Junction, Maryland, United States

$170k-$218k/yr OnsiteFull Time

Intelliforce: Provides engineering and technical solutions for the intelligence community.

6+ YOETop Secret clearance with Full Scope Polygraph; US citizenship; 6 years x BS or 4 years x MS in a technical field; or equivalent experience; strong C/C++/Python skills; Unix, network programming; Jira/Confluence; Git/Subversion.

C, C++, Python, Unix, Network programming, Jira, Confluence, Git, Subversion

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Sr. Software Engineer/Developer

Washington, District of Columbia, United States

$135k-$234k/yr OnsiteFull Time

Arcfield: Systems engineering and mission support for defense and space.

5+ YOEBS in Engineering or CS with 10-12 years' experience; MS 8-10 years; PhD 5-7 years; DoD TS/SCI clearance; proven software development experience; multiple languages; Linux front-end/back-end; DevOps tools; strong communication and collaboration.

Java, Python, C++, JavaScript, Ruby, Motif, Linux, Git, Jira, Docker, Kubernetes, CI/CD

1mo

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1mo

Cloud Developer

Washington, District of Columbia, United States

$175k-$185k/yr OnsiteFull Time

E-INFOSOL: Provides secure cloud and cybersecurity solutions for government agencies.

7+ YOEActive Top Secret clearance with SCI/CI poly ability; BS in Engineering or Computer Science; 7-9 years of Cloud Developer experience; AWS Certified Solutions Architect – Professional.

AWS, Azure, Google Cloud, Terraform, CloudFormation, Azure ARM Templates, PowerShell, Python, Bash

1mo

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1mo

Software Developer 3 (SWD3)

Annapolis Junction, Maryland, United States

OnsiteFull Time

RealmOne: Provides advanced technology services for national security agencies.

15+ YOESenior software developer with Java, AWS, and modern tech stack; strong self-starter with 15+ years in software development; DoD 8570 IAT II required.

Java, Spring, AWS, Angular, Hibernate, PostgreSQL, Docker, Podman, JHipster, XML, XSD, C++, Python, Perl, Ruby on Rails, Django, SpringFramework

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Software Developer

Quantico, Virginia, United States

$130k-$145k/yr OnsiteFull Time

Resource Management Concepts: Provides IT, cybersecurity, and engineering solutions to government agencies.

Active DoD Secret clearance required; Associate degree or 5 years related experience; DoD 8140.03 IAT Level II; DoD 8570 CSSP Infrastructure; Windows and Linux; scripting in SQL, Java, Python, CSS, HTML, ASP, RegEx, VB.NET, PowerShell; knowledge of PM methodologies.

Windows, Linux, SQL, Java, Python, CSS, HTML, ASP, RegEx, VB.NET, PowerShell, .NET, C#, Batch

2mo

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2mo

Security Software Engineer, Applied Computing (Starshield)

Washington, District of Columbia, United States

$130k-$175k/yr OnsiteFull Time

SpaceX: Designs, manufactures, and launches advanced rockets and spacecraft.

2+ YOEBachelor's degree in CS or 2+ years security software development; Python/C++/Golang; security for OS/distributed systems; AI/LLM experience.

Python, C++, Golang

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Homes.com - Senior Software Engineer (C#/.NET)

Arlington, Virginia, United States

HybridFull Time

CoStar GroupNASDAQ: CSGP: Provides global real estate information, analytics, and online marketplaces.

5+ YOE5+ years production development with C#, .NET/.NET Core and/or Python; strong OO design; SQL and AWS experience; Bachelor's in CS/Engineering.

C#, NET, Python, AWS, SQL, Kafka, Datadog, DynamoDB, S3, Lambda, SQS, ElastiCache

1mo

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1mo

Senior Website Developer

Arlington, Virginia, United States

OnsiteFull Time

Knowesis: Provides professional consulting and data services to federal agencies.

5+ YOE5+ years web development; bachelor’s in CS/IT/Web Development; front-end and back-end skills; CMS experience; US citizenship with Public Trust clearance.

HTML5, CSS3, JavaScript, React, Angular, Vue.js, PHP, Python, Ruby, Node.js, Drupal, WordPress, USWDS

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Associate Flight Software Engineer

Lanham, Maryland, United States

OnsiteFull Time

AST SpaceMobileNASDAQ: ASTS: Space-based cellular broadband network for standard mobile devices.

1+ YOEBachelor's in a technical field; 1-3 years in software development or embedded systems; strong C/C++, Python; RTOS, Linux; CI/build tools; team collaboration.

C, C++, Python, RTOS, Linux, Git, CMake, Make, Ninja

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Aerospace Flight Software Engineer (cFS)

Greenbelt, Maryland, United States

OnsiteFull Time

Relative Dynamics: Develops engineering solutions and communication technologies for the aerospace industry.

15+ YOEDevelop, test, and integrate flight software; write cFS apps; work with C, Python, Ruby; 15+ years experience; BS in a related field.

C, Python, Ruby, COSMOS

1mo

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1mo

Lead Developer, Technology

Rockville or Washington or Tysons

HybridFull Time

FINRA: Regulates brokerage firms and exchange markets in the United States.

7+ YOESenior software engineer with 7+ years in OO and database tech, Agile experience, and strong communication; able to mentor and lead development.

Java, Scala, Python, Object-Oriented Programming, Database Technologies, Agile, Test Automation, Build Automation, Configuration Management

1mo

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1mo

Senior Software Engineer, Strategic Customer Engagements

Arlington, Virginia, United States

$143k-$179k/yr HybridFull Time

Planet LabsNYSE: PL: Operates imaging satellites providing daily global Earth observation data.

6+ YOE6+ years software engineering; geospatial development experience; Python; AWS or GCP; strong customer engagement; able to travel 30-50%; eligible for security clearance.

Python, AWS, GCP, OpenLayers, Rasterio, Fiona, Shapely, GDAL

2mo

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2mo

Staff Engineer

Chantilly or Washington

HybridFull Time

History Factory: Provides archival management and brand heritage consulting for organizations.

4+ YOE4+ years building web apps with Node.js/React/Next.js; Python; AI platforms; Zapier; secure coding; SQL/relational modeling.

Node.js, React, Next.js, Laravel, Python, Zapier, OpenAI API, Google Gemini API, Codex CLI, Claude Code, Gemini CLI, NotebookLM, OAuth, OIDC, Swagger, MySQL, PostgreSQL, Git, CI/CD, Docker, Vitest, Pytest

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Ground Station Systems Software Engineer

Chantilly, Virginia, United States

OnsiteFull Time

Lynk Global: Enables direct satellite-to-phone connectivity for standard mobile devices.

Design, develop, deploy, and maintain ground station software; strong Linux, Rust/Python; DevOps; telemetry; network and infrastructure as code.

Rust, Python, React, AWS, Terraform, Ansible, Packer, GitLab CI/CD

1mo

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1mo

Senior Software Engineer - Developer Services

Maryland, Maryland, United States

HybridFull Time

T. Rowe PriceNASDAQ: TROW: Global investment management firm providing funds and retirement services.

5+ YOE5+ years of total relevant experience; strong Java or Python; extensive AWS experience; microservices, REST APIs, CI/CD; Docker; OAuth2/OIDC/JWT; enterprise identity; strong problem-solving and communication.

Python, Java, Terraform, AWS, Docker, JSON/YAML, Git, CI/CD

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Software Engineer

Chantilly, Virginia, United States

OnsiteFull Time

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

5+ YOEActive TS/SCI with Poly; Bachelor's; 5+ years; experience in Java/C#/Python/JavaScript; debugging; team collaboration; documentation; scripting; Git.

Java, CSharp, Python, JavaScript, TypeScript, Git

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Software Engineer

McLean, Virginia, United States

$50k-$290k/yr OnsiteFull Time

The Swift Group: Providing engineering and cybersecurity services for national security missions.

3+ YOE3+ years software engineering; strong JS/React/Node/Python; AWS; REST APIs; databases; Git; containerization; TS/SCI clearance.

AWS, JavaScript, React, Node.js, Python, Docker, Kubernetes, API Gateway, CloudFormation, Confluence, Jira, PostgreSQL, MySQL, MongoDB

2mo

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2mo

Software Engineer, Backend - AI Practice Team

Houston or Knoxville or Washington

$90k-$150k/yr OnsiteFull Time

American Bureau of Shipping: Global maritime classification and technical safety service provider.

8+ YOE8+ years backend development; Go and Python; cloud deployment; Kafka; distributed systems patterns; performance optimization; Docker/Kubernetes; Databricks.

Go, Python, Kafka, Docker, Kubernetes, Databricks

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Senior Software Engineer (Big Data)

McLean, Virginia, United States

OnsiteFull Time

KDA Consulting: Provides IT engineering and cloud services for intelligence missions.

TS/SCI clearance, BS in CS/Engineering or related field, full stack development, big data tech (Hadoop/Spark/Kafka), Java/Python/C#, APIs/microservices, problem solving.

Hadoop, Apache Spark, Kafka, Java, Python, C#, REST APIs, Microservices, Front-end frameworks, Cloud (AWS)

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Software Developer Mid level

Annapolis Junction or Columbia

$140k-$175k/yr OnsiteFull Time

ELEVI Associates: Provides cyber security and IT engineering for federal agencies.

14+ YOE14+ years software engineering; Bachelor’s in Computer Science; 1 year Python; backend focus with Java/Spring/MongoDB; desired Angular/AWS/Docker/Kubernetes.

Python, Java, Spring Framework, RESTful API, MongoDB, Angular, AWS, Rancher, Docker, Kubernetes

1mo

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1mo

Research Software Engineer, Formal Methods (Hybrid)

Cambridge or Arlington or Columbia

$87k-$165k/yr HybridFull Time

RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.

5+ YOE5+ years of software development experience; strong Python and C/C++ or Java; experience with formal methods; security-focused; ability to obtain DoD Top Secret clearance.

Python, C, C++, Java, logic programming

1mo

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1mo

Lead Software Engineer - Optum Technology - Remote

Minneapolis or Washington D.C.

$113k-$193k/yr RemoteFull Time

UnitedHealth GroupNYSE: UNH: Provides health insurance and technology-driven healthcare services.

8+ YOE8+ years IT experience; Bachelor in CS/Engineering; security-focused DevOps; Java development; CI/CD and cloud experience; SQL/Kafka; Python and scripting; strong communication

Java, GitHub Actions, CI/CD, Maven, XML, Web Services, REST APIs, Microservices, Kafka, Python, Power Automate, Microsoft Graph API, Shell Scripting

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Cleared Embedded Developer

Annapolis Junction, Maryland, United States

OnsiteFull Time

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

Embedded software design, development, testing; TS/SCI with Full Scope Polygraph required.

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

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Cloud Developer (5239)

Washington, District of Columbia, United States

$99k-$167k/yr OnsiteFull Time

SMX: Providing cloud, cybersecurity, and mission-focused technology solutions to government.

3+ YOEActive Top Secret clearance; 3–5 years AWS cloud development; IaC (Terraform/Ansible); GitLab CI/CD; Bachelor's degree in a technical field.

Terraform, Ansible, AWS, GitLab, Python, Node.js, S3, EC2, VPC, IAM, RDS, Aurora PostgreSQL, Splunk, Docker, EKS

1mo

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1mo

Senior Software Engineer - FFPP-8775

Annapolis Junction, Maryland, United States

$170k-$185k/yr OnsiteFull Time

Innovative Systems & Solutions: Technology consulting firm specializing in government systems solutions.

7+ YOESeven+ years as a software engineer; BS in Computer Science; AI/ML development/integration; Terraform with AWS; C++, Python and/or Golang; high-performance/GPU apps; large-scale streaming data analytics.

C++, Python, Golang, Terraform, AWS, GPU programming, AI/ML

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AI Engineer

Washington, District of Columbia, United States

HybridContract

Global Information Technology: Provides professional IT certification training and corporate consulting services.

3+ YOEPython, AI/ML frameworks; NLP, LangChain, cloud (Azure/GCP); APIs, data pipelines, monitoring; 3-5 years experience; Bachelor's in CS/AI.

Python, TensorFlow, PyTorch, LangChain, LangGraph, Azure, Google Cloud, Splunk, AppInsights

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Automation Engineer

McLean, Virginia, United States

OnsiteFull Time

Merlin Group: Accelerates federal adoption of innovative cybersecurity and technology solutions.

3+ YOE3+ years in CI/CD and infrastructure automation; experience with SOAR platforms; Python; familiarity with FedRAMP/SOC 2 evidence collection; IaC tools (Terraform/CloudFormation).

Python, Terraform, CloudFormation, Cortex XSOAR, Singularity Hyperautomation, Phantom

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Full Stack Developer

McLean, Virginia, United States

$113k-$188k/yr OnsiteFull Time

Vantor: Providing AI-powered spatial intelligence and high-resolution Earth observation.

3+ YOEBachelor's in computer science; 3+ years of experience; active TS/SCI with polygraph; US citizenship; willing to work onsite; strong JS/Python and cloud/DevOps skills.

Docker, AWS, Terraform/CDKTF, Git, JavaScript, TypeScript, Python, SQL

2mo

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2mo

Software Engineer - AI Infrastructure

Minneapolis or Washington

HybridFull Time

Swoop Technologies: Distributed operating system for military and critical infrastructure.

Experience with LLM infrastructure, Kubernetes, PyTorch; security clearance eligible; Python proficiency.

PyTorch, Kubernetes, NVIDIA drivers, NVIDIA Kubernetes Container Toolkit, vLLM, Python

2mo

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2mo

Principal Engineer, Software (Reston, VA, US, 20191)

Reston, Virginia, United States

OnsiteFull Time

SES Space & DefenseEuronext Paris: SESG: Provides satellite-based communications and network services to government agencies.

10+ YOEUS citizenship, ability to obtain/maintain security clearance, BS in CS or related field, 10+ years in applications development, strong communication, multi-architecture development, expert in JS (TypeScript/React/Angular) and Python, SDLC/Agile, SOLID, data eng, Docker/Kubernetes, cloud-native, secure DevOps.

JavaScript, TypeScript, React, Angular, Python, Docker, Kubernetes, SQL, ETL, Data warehousing, Data streaming

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Software Engineer

Reston, Virginia, United States

OnsiteContract

Global C2 Integration Technologies: Provides AI and engineering solutions for defense missions.

Active TS/SCI clearance; Bachelor's in engineering or related field or equivalent; experience with Java, Python, Node.js, JavaScript, HTML; client/server architectures; data transport concepts.

Java, Python, Node.js, JavaScript, HTML, Atlassian Jira, Confluence, CI/CD

1mo

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1mo

Senior Software Engineer – Biomedical Informatics

Rockville, Maryland, United States

$140k-$160k/yr OnsiteFull Time

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

5+ YOE5+ years software development; Python; ML models; AWS; PostgreSQL; Docker; Linux; Git; CI/CD; independent cross-team delivery.

Python, AWS, Docker, PostgreSQL, Git, Linux, CI/CD, OMOP, vector databases

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Senior AI Developer

McLean, Virginia, United States

OnsiteFull Time

Steampunk: Design-led federal technology consulting and innovation services firm.

7+ YOE7+ years in software engineering; 2+ years AI/ML; Bachelor's degree; Python and AI frameworks; production-grade AI apps; cloud platforms; RAG, LLM orchestration.

Python, PyTorch, TensorFlow, Hugging Face Transformers, LangChain, LlamaIndex, RAG, Vector databases, AWS, Azure, GCP, Docker, Kubernetes

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Software Developer (Systems Software)

McLean, Virginia, United States

OnsiteFull Time

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

US citizen with active TS/SCI w/ FS polygraph; experience with CI/CD, Terraform, AWS, Docker, Python, Bash; databases PostgreSQL/MySQL; monitoring and logging; Git workflows.

Terraform, AWS, Docker, Git, Bash, Python, PostgreSQL, MySQL, Prometheus, CloudWatch, Kubernetes

2mo

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2mo

Software Developer I (Artificial Intelligence/Machine Learning) – Division of Information Technology

Washington, District of Columbia, United States

$129k-$150k/yr OnsiteFull Time

Federal Reserve Board of Governors: The central governing body of the U.S. Federal Reserve System.

5+ YOEBachelor's degree and 5+ years of software development experience, with 3+ years in AI/ML; strong Python; AI frameworks; cloud; DevOps; security.

Python, PyTorch, TensorFlow, Hugging Face Transformers, LangChain, LlamaIndex, Docker, Kubernetes, CI/CD

1mo

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1mo

Senior Full Stack Developer TS/SCI (or eligible)

Reston, Virginia, United States

OnsiteFull Time

Vibrint: Provides mission-critical systems and data analysis for national security.

5+ YOE5+ years full stack development; React/Angular/Vue; Node.js/Java/Python; RESTful APIs; databases; cloud; Git/CI/CD; TS/SCI eligibility.

React, Angular, Vue, Node.js, Java, Python, RESTful APIs, PostgreSQL, MySQL, MongoDB, AWS, Azure, GCP, Git, CI/CD, Docker, Kubernetes, GraphQL

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AI Engineer

Reston, Virginia, United States

$75k-$170k/yr OnsiteFull Time

Amivero: Provides digital services and IT modernization for government agencies.

5+ YOE5+ years software or ML engineering; 2+ years GenAI/LLM; strong Python; vector DB and RAG experience; AWS Bedrock/OpenSearch; US citizenship; DHS clearance preferred.

Python, OpenSearch, Bedrock, Pinecone, Weaviate, Chroma, FAISS, LangChain, LlamaIndex, Haystack, APIs, Docker, Kubernetes, MLOps, CI/CD, Cloud

2mo

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2mo

Devops Engineer - Federal

Washington, District of Columbia, United States

RemoteFull Time

Cognition: Develops autonomous AI software engineers and developer tools.

2+ YOE2+ years software engineering; federal/government experience; compliance and security controls; Python/TypeScript; strong distributed systems skills.

Python, TypeScript

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Software Engineer 2

Annapolis Junction, Maryland, United States

OnsiteFull Time

RealmOne: Provides cybersecurity and intelligence services for national security missions.

8+ YOEEight years of SWE experience; Bachelor's in Computer Science; Grafana, Bash, Python, JavaScript, React; active security clearance with polygraph.

Grafana, Bash, Python, JavaScript, React, Transcript