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Python Software Developer Jobs in Montclair, VA, US

2,100+ python software developer jobs from 480+ companies hiring in Montclair, VA, US.

All jobs in Montclair, VA, USPython Software Developer Jobs in United States
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2,160 jobs- Montclair • 50 miles
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Python Software Developer
Ashburn, Virginia, United States
HybridFull Time
DXC Technology
DXC TechnologyNYSE: DXC: Global provider of IT services and business technology solutions.
4+ YOE4+ years software development; Python proficiency; strong SQL; GraphQL APIs; REST; Git/Linux/Docker; web security; cloud; microservices; bachelor's degree or equivalent; authorized to work in the United States
Python, GraphQL, REST, SQL, Git, Linux, Docker, OpenAPI
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1mo
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Python Software Developer - Computer Vision
McLean, Virginia, United States
$25-$65/hr RemoteFull Time
USG SaaS
USG SaaS: Develops custom software and cloud systems for government organizations.
3+ YOE3+ years software development for shipping products; proficient in C/C++, Swift a plus; OO design; API development; CV/ML passion; self-motivated; strong problem solving and communication; GPU/SoC acceleration bonus.
C/C++, Swift, APIs, GPU acceleration, SoC acceleration
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1w
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Python Developer
Bethesda, Maryland, United States
$73k-$149k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
3+ YOESecret clearance, Bachelor's degree, 3+ years Python development, 3+ years software engineering, Flask/Django experience, Linux development, Oracle development, Ada willingness.
Python, Flask, Django, REST API, Git, GitLab, GitHub, Jenkins, Vue.js, JavaScript, Linux, Oracle, Ada
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4d
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Python Developer
Lexington Park, Maryland, United States
$55k-$126k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
Software development experience with Python/JavaScript/Scala; ability to obtain Secret clearance; HS diploma or GED; desirable ML/AI knowledge.
Python, JavaScript, Scala, AI/ML tools
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2w
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Python Developer
Fort Meade, Maryland, United States
$130k-$265k/yr OnsiteFull Time
Accenture Federal Services
Accenture Federal ServicesNYSE: ACN: Provides technology and consulting services to U.S. federal agencies.
6+ YOESr. Python developer with TS/SCI clearance, advanced degree options, and 6+ years Python experience; strong math/data science background.
Python
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Software Engineer - Python
Annapolis Junction, Maryland, United States
OnsiteFull Time
Interclypse
Interclypse: Provides software engineering and cybersecurity solutions for government agencies.
Develop Python/FastAPI middleware; build pipelines; implement REST API; ensure testing; participate in Agile sprints; documentation.
Python, FastAPI, REST API, Git, Agile, DevSecOps, Axway, Windows NAS, SQL, UAT
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Python Software Engineer (TS/SCI with Polygraph)
Annapolis Junction, Maryland, United States
$150k-$200k/yr OnsiteFull Time
Red Alpha
Red Alpha: Provides software engineering and data science for defense missions.
7+ YOE7+ years software engineering; BS in CS or related field; Linux CLI; Bash; Python; Rust or willingness to learn; NoSQL (MongoDB); Docker; Kubernetes; Helm; RabbitMQ; GitLab CI; Ansible; Git; TS/SCI with polygraph
Linux, Bash, Python, Rust, MongoDB, Docker, containerd, Kubernetes, Helm, RabbitMQ, GitLab CI, Ansible, Git, PostgreSQL, Jira, Confluence
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Python Developer (Cybersecurity)
Dahlgren, Virginia, United States
OnsiteFull Time
TMC Technologies
TMC Technologies: Provides engineering and IT services to government and defense clients.
Develop software and security tools using Python; ability to obtain Secret security clearance; Bachelor's in Computer Science or Cybersecurity; on-site at NSWC Dahlgren.
Python
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Software Developer (Python) II
Chantilly, Virginia, United States
$91k-$142k/yr OnsiteFull Time
Noblis
Noblis: Nonprofit science, technology, and strategy firm supporting government missions.
5+ YOEActive TS/SCI clearance with SCI eligibility; strong Python development; SDLC knowledge; Git proficiency; US citizenship.
Python, Git, SDLC, Unit Testing, TDD
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4d
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Python Developer
Fort Meade, Maryland, United States
OnsiteFull Time
Set of X
Set of X: Provides specialized engineering services for U.S. national security missions.
7+ YOEBachelor's degree in Computer Science or related; 7+ years SWE experience; TS/SCI clearance with polygraph; strong Python; NiFi or Elasticsearch a plus.
Python, NiFi, Elasticsearch
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Python/Django Developer
Bethesda, Maryland, United States
$110k-$150k/yr HybridFull Time
Black Canyon Consulting
Black Canyon Consulting: Provides program and IT management support for federal agencies.
3+ YOE3+ years full stack web development with Python, Django, and ReactJS; strong JS/HTML/CSS; relational DB; Git; accessibility and security knowledge.
Python, Django, ReactJS, Angular, JavaScript, HTML5, CSS3, Git, SVN, REST APIs, Selenium, Solr
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3w
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Software Engineer (Python/Django)
Arlington, Virginia, United States
RemoteFull Time
Allocore
Allocore: Cloud platforms for government loans, grants, and fraud prevention.
3+ YOE3+ years Python/Django; design and build scalable web apps; APIs with DRF; async processing; PostgreSQL; AWS/GCP/Azure; code reviews; occasional travel to DC area; U.S. citizenship for clearance.
Python, Django, Django REST Framework, Celery, PostgreSQL, AWS, GCP, Azure, Git, CI/CD
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1w
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Lead Software Engineer - Python + PySpark
Richmond or McLean or Cambridge
$179k-$225k/yr HybridFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
4+ YOE1+ MgmtLead software engineer with 4+ years of software engineering experience and 1+ year cloud experience (AWS/Azure/GCP); proficient in Python, PySpark, JavaScript, TypeScript, SQL, Java, and Go; strong leadership and collaboration skills.
Python, PySpark, JavaScript, TypeScript, SQL, Java, Go, Docker, Kubernetes, AWS, Azure, GCP, HTML/CSS, Open Source RDBMS, NoSQL
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Python Developer
Herndon, Virginia, United States
HybridFull Time
NT Concepts
NT Concepts: Provides data and technology solutions for national security missions.
5+ YOE5+ years full-stack Python development; front-end JS frameworks; REST APIs; CI/CD; Docker/Kubernetes; AWS; TS/SCI clearance preferred.
Python, FastAPI, Flask, Django, PyTest, GitLab CI/CD, Docker, Kubernetes, AWS, PostgreSQL, MySQL, MongoDB, Redis, React, Vue.js, Angular, HTML5, CSS3, Linux
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3w
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Software Engineer III (Python)
Washington, District of Columbia, United States
$165k-$180k/yr OnsiteFull Time
Truist
TruistNYSE: TFC: Offers personal banking, business lending, and investment management services.
Proficient in Python with hands-on AWS, GitLab CI/CD, containerized apps, Terraform/CloudFormation; IaC with security; cloud infrastructure automation; English fluency; onsite in Washington DC; visa sponsorship not provided.
Python, GitLab, AWS, Terraform, CloudFormation, Wiz, ECS, EKS, EC2, S3, CloudTrail, CloudWatch, CloudFront, VPC
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Senior Python Developer - Contingent
McLean, Virginia, United States
RemoteFull Time
Aretum
Aretum: Provides technology-enabled mission support services for federal government agencies.
8+ YOE8+ years Python development, 8+ years OOP, Bachelor’s or 2 extra years, API/microservices, AWS, Docker/Kubernetes, CI/CD, Agile.
Python, FastAPI, Docker, Kubernetes, Terraform, AWS, PostgreSQL, MySQL, Solr, Elasticsearch, JQuery, JavaScript, CI/CD
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3w
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Lead Software Engineer - AIML/Python/AWS
Jersey City or Wilmington or McLean
$152k-$215k/yr OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial firm providing banking and investment management services.
5+ YOE5+ years software engineering; cloud AWS; Python/Java/Golang; Terraform; CS/CE/Math background.
Python, Java, Golang, Terraform, AWS
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Senior Python Developer
Fairfax, Virginia, United States
OnsiteFull Time
ECS
ECSNYSE: ASGN: Provides advanced technology and engineering services to government agencies.
7+ YOEStrong Python, Elastic Stack, 7-9+ years building enterprise apps, systems integration, CI/CD, data modeling, and distributed storage tech.
Python, Pandas, BeautifulSoup, NumPy, Boto3, Elasticsearch, Kibana, Docker, Kubernetes, AWS, Git, CI/CD, RabbitMQ, Kafka, Logstash, Beats, Splunk, Terraform
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Python Engineer, Agentic AI
Washington or Philadelphia
$121k-$181k/yr HybridFull Time
Comcast
ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.
2+ YOEProficient in Python with backend focus, testing, and Agile collaboration; experience with AI agent workflows and RESTful services.
Python, Git, CI/CD, pytest, REST APIs, FastAPI, Docker, Asyncio
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Software Developer
Chantilly, Virginia, United States
OnsiteFull Time
Bespoke Technologies
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
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Senior Software Developer
Fort Belvoir, Virginia, United States
OnsiteFull Time
Applied Research Associates
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
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Software Engineer
Herndon or Colorado Springs or Dayton
$95k-$195k/yr HybridFull Time
Auria
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
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3w
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Software Engineer
Columbia, Maryland, United States
$70k-$190k/yr OnsiteFull Time
Belay Technologies
Belay Technologies: Provides specialized technology and engineering services to the DoD.
3+ YOEEntry-level Software Engineer with Python proficiency; TS/SCI with polygraph; 3 years experience or 4 years substituted for a B.S.; strong software development background.
Python, Apache Kafka, Elasticsearch, PydanticAI, Langgraph, DeepAgents
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Software Developer
Winchester, Virginia, United States
OnsiteFull Time
Redhorse
Redhorse: Delivering data insights and technology solutions to government agencies.
5+ YOE5+ years software development; Top Secret/SCI-friendly clearance; proficient in C#, Java, or Python; experience with microservices, Docker, Kubernetes; use of TDD/BDD in Agile.
Docker, Kubernetes, C#, Java, Python, TDD, BDD, Agile
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2mo
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Python / AI Engineer
Washington, District of Columbia, United States
OnsiteFull Time
Cognizant
CognizantNASDAQ: CTSH: Provides information technology consulting and business process outsourcing services.
3+ YOEDesign, develop, and deploy AI solutions using cloud architectures and LLMs; lead projects; implement NLP, ML, and generative AI; ensure security and governance.
Python, TensorFlow, PyTorch, LangChain, LangGraph, Google Cloud, Azure, Azure Functions, Azure API Management, Azure Service Bus, Logic Apps, Azure Storage, Azure Cognitive Services, Azure Cosmos DB, Azure Data Factory, Databricks, Azure Data Lake, Splunk, AppInsights, Agentic AI
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Software Developer
Dahlgren, Virginia, United States
OnsiteFull Time
Technical Intelligence Solutions
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
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CNO Software Engineer
Hanover, Maryland, United States
OnsiteFull Time
ManTech
ManTech: Delivers technology and cybersecurity solutions to national security agencies.
7+ YOE7+ years in software development or software engineering; Python or C/C++ programming; ability to troubleshoot and debug systems
Python, C/C++
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Software Engineer
Hanover, Maryland, United States
OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Bachelor’s degree in Engineering or Computer Science, or related discipline; ability to obtain US security clearance; experience with C++, Python, and software development.
C++, Python, MATLAB, Simulink, LabVIEW
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Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
SilverEdge Government Solutions
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
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Software Engineer
Chantilly, Virginia, United States
$69k-$158k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
2+ YOE2+ years software development; Java, Python, Rust or Go; experience modernizing legacy apps and microservices; TS clearance; Bachelor's degree.
Java, Python, Rust, Go, Docker, Kubernetes, Linux
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Software Developer
Chantilly, Virginia, United States
OnsiteFull Time
V2X
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
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Senior‑Level Python Developer (Python, C++)
Annapolis Junction, Maryland, United States
$155k-$175k/yr OnsiteFull Time
IDS International
IDS International: Global training, logistics, and security for government agencies.
8+ YOEBachelor’s degree in computer science; 8+ years relevant experience; Python, C++, Spark; Jupyter Notebooks; JIRA, Confluence, Git/GitLab; knowledge of customer tools; active TS/SCI with Polygraph.
Python, C++, Spark, Jupyter Notebooks, JIRA, Confluence, Git/GitLab
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Software Developer (Systems Software Expert
McLean, Virginia, United States
RemoteFull Time
Quevera
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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1mo
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Software Engineer - Java, Python, node.js, JavaScript, HTML (2026-0065)
Reston, Virginia, United States
OnsiteFull Time
Acclaim Technical Services
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
Annapolis Junction, Maryland, United States
$150k-$185k/yr OnsiteFull Time
Peterson Technologies
Peterson Technologies: Engineering firm providing data and cyber solutions for defense.
7+ YOEDevelop, maintain, and enhance software systems; require TS/SCI with polygraph eligibility; 7+ years of software engineering experience; bachelor's degree or 11+ years without a degree; Java, AWS, Python; MongoDB preferred.
Java, AWS, Python, MongoDB
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Software Engineer
Sterling, Virginia, United States
OnsiteFull Time
Northstrat
Northstrat: Provides IT and engineering solutions for US government agencies.
5+ YOEBachelor’s in software engineering, computer science, information systems, or equivalent; 5+ years in software development; strong OO languages (Java, JEE, C++, Python); RESTful services; microservices and containers; TS/SCI clearance with polygraph.
Java, JEE, C++, Python, SpringBoot, Mockito, Lombok, OpenAPI, Swagger, REST, Microservices, Docker, Kubernetes, Helm, Git, Gradle, Kafka, MongoDB, ActiveMQ, NiFi, AWS, Linux, CI/CD
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Software Engineer
Arlington or United States
$70k-$150k/yr RemoteFull Time
DocMe360
DocMe360: Delivering digital strategy and clinical AI solutions for government.
5+ YOE5–8+ years software development; healthcare domain experience; Agile; Python, React, FastAPI; REST APIs; CI/CD/DevSecOps; strong problem solving and communication.
Python, React, FastAPI, REST APIs, CI/CD, DevSecOps, VistA RPC, MUMPS, VistA, EHR
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5d
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Software Engineer
Dahlgren, Virginia, United States
$100k-$125k/yr OnsiteFull Time
Tactical Engineering & Analysis
Tactical Engineering & Analysis: Provides systems engineering and analysis for military combat systems.
4+ YOE4+ years in software development, with DoD/ simulation system experience; strong Python/Java/C++ skills; RMF/IA knowledge; DoD 8570.01-M IAT II certification preferred.
Python, Java, JavaScript, C++, SQL, Git, SDLC, Agile, TDD
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1d
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Software Engineer / Principal Software Engineering
Dulles, Virginia, United States
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
5+ YOEBachelor's in STEM with 5+ years, or Master's with 3+ years, or PhD with minimal experience; strong software development in Python/C++, plus TS clearance.
Python, C++, Bash, PostgreSQL, Ansible
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Software Developer Sr
Chantilly, Virginia, United States
OnsiteFull Time
AnaVation
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
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HiringCafe market data

Python Software Developer Jobs market signals in Montclair, VA, US

These signals come from live HiringCafe job inventory, not a static article. Use them to compare the market, then open listings above to apply directly.

Open jobs
2,100+
Hiring companies
480+
Fresh sample
62% new in 30d
Salary visibility
46% show pay

Companies appearing in this market

Booz Allen HamiltonAccenture Federal ServicesAnaVationApplied Research AssociatesAretumBelay TechnologiesBespoke TechnologiesCACI

Work location mix in visible results

Onsite: 86Hybrid: 23Remote: 13