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Python Developer Jobs in Montclair, VA, US
3,900+ python developer jobs from 800+ companies hiring in Montclair, VA, US.
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Staff Software Developer (TS/SCI)
Herndon, Virginia, United States
$92k-$195k/yr OnsiteFull Time
5+ YOEUS citizen with TS/SCI clearance and CI poly; BS in CS/Software Eng; 5+ years backend software dev; Java/Python/JS; REST APIs with Spring Boot; Docker/Kubernetes/OpenShift; Jenkins/Git/Helm; Linux scripting; on-site in Herndon, VA.
Java, Python, JavaScript, Spring Boot, Docker, Kubernetes, OpenShift, Rancher, Jenkins, Git, Bitbucket, Gradle, Bash, Shell, OpenSearch, Elasticsearch, Keycloak, Fluent Bit, Cesium, PostgreSQL
2mo
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Sr. AI Developer, GS (Chantilly, VA, US, 20151)
Chantilly, Virginia, United States
$116k-$189k/yr OnsiteFull Time
5+ YOE5+ years Python ML, DL, LLMs; strong MLOps; cloud platforms; gov't compliance; security-focused AI.
Python, TensorFlow, PyTorch, Scikit-learn, Hugging Face, LangChain, OpenAI, AWS SageMaker, Azure ML, Google Vertex AI, MLflow, Airflow, Kubeflow, FAISS, Pinecone, Retrieval-Augmented Generation, CMMC, FedRAMP, NIST
2mo
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Senior Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
14+ YOESenior software engineer with cloud architecture, data visualization, Python/Java, and leadership experience; TS/SCI clearance with polygraph; Bachelor's degree in CS or related field plus 14 years of experience; experience with MySQL/PostgreSQL and web-based server applications.
Python, Java, MySQL, PostgreSQL, Linux, Web-based server applications, Data visualization
4d
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Senior Embedded Software Engineer
Washington, District of Columbia, United States
$191k-$254k/yr OnsiteFull Time
Senior-level embedded software experience; Python/C/C++; security-focused; active Secret clearance; hardware/software integration.
Python, C, C++
1w
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Lead Software Engineer
Springfield, Virginia, United States
HybridFull Time
6+ YOETS/SCI clearance; Bachelor's with 6+ years or 15+ years experience in lieu of degree; 6+ years Python, DevSecOps/CI-CD, IaC (Terraform), containers; AWS (EC2, DynamoDB, ECS, SQS/SNS, IAM, Lambda, CDK); leadership; strong communication.
Python, GitLab, Terraform, Docker, Kubernetes, OpenShift, AWS CDK, EC2, DynamoDB, SQS/SNS, Lambda
1w
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Cloud Developer (5239)
Washington, District of Columbia, United States
$99k-$167k/yr OnsiteFull Time
3+ YOEActive Top Secret clearance; 3-5 years cloud development; AWS core services; IaC with Terraform/Ansible; GitLab CI/CD; Python or Node.js; Bachelor’s degree.
AWS, Terraform, Ansible, GitLab, Python, Node.js, S3, EC2, VPC, IAM, RDS (Aurora PostgreSQL), Splunk, Tibco WebFOCUS, Docker, EKS
1mo
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Full Stack Developer - TS/SCI with Polygraph Required
Washington, District of Columbia, United States
$165k-$185k/yr OnsiteFull Time
5+ YOEActive TS/SCI with polygraph required; 5+ years software development; full-stack development experience; strong SQL and databases; Git/git workflows; able to work with government requirements.
C#, Java, Python, Go, JavaScript, TypeScript, React, SQL, Git, Tableau, Oracle, SQL Server, MySQL, DynamoDB, Postgres, MongoDB
1w
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RF Software Engineer, Senior - 1647
Reston, Virginia, United States
RemoteFull Time
5+ YOESenior RF software engineer with 5-7 years experience, BS or higher, Python, Linux, databases, CI/CD, and remote work capability.
Python, NumPy, Pandas, scikit-learn, MySQL, PostgreSQL, SQLite, FlatBuffers, Protocol Buffers, Linux, GitLab, React, D3
1mo
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AI Solution Engineer-Platform
Huntsville or Washington
HybridFull Time
4+ YOEProficient in Python/SQL with back-end language (Java/Scala/Go); experience with data pipelines, ML production, cloud analytics, REST APIs, graph DBs; CI/CD, DevOps, and containerization.
Python, SQL, Java, Scala, Go, PostgreSQL, Snowflake, Neo4j, Amazon Neptune, Git, Docker, Kubernetes, Terraform, CloudFormation, Pulumi, GitHub Actions, GitLab CI, Jenkins, CI/CD, Docker/Kubernetes, infrastructure-as-code, unit testing, REST APIs, Plotly, D3.js, Terraform, Pulumi, AWS GovCloud
1mo
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Signals Software Engineer
Annapolis Junction, Maryland, United States
$63-$77/hr OnsiteFull Time
4+ YOEExperience in RF signal processing software (detectors, demodulators, protocol processors); translate requirements to design; develop in C++/Java on Linux; RF concepts; TS/SCI clearance with polygraph.
C++, Java, Python, MATLAB, SIMULINK, Eclipse, Google Protocol Buffers, Git, Subversion, GNU Radio
1w
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Data Engineer
Bethesda or Chapel Hill
RemoteFull Time
3+ YOE3+ years in ETL/SQL development and data engineering; experience in Higher Education or EdTech; strong SQL; Python experience; AWS familiarity.
SQL, Python, AWS (Redshift, S3, Glue), NoSQL, SQL analytics
2h
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Lead DevOps Engineer
McLean, Virginia, United States
RemoteFull Time
5+ YOEFive (5) years in technology, four (4) years with CI tools (GitLab preferred), four (4) years automating delivery, three (3) years administering Kubernetes, three (3) years on AWS, scripting in Bash/Python/Terraform, on-call reliability. Travel up to 10%.
GitLab, Bash, Python, Terraform, Kubernetes, Docker, AWS
1w
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Senior Software Engineer III (Government)
Columbia, Maryland, United States
$89k-$208k/yr OnsiteFull Time
8+ YOEBachelor's degree; 8 years experience; .NET, Java, Python, C# skills; TS/SCI clearance.
.NET, ASP.NET, C#, Java, Python, Oracle
2w
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Junior Palantir / Maven Product Engineer
Herndon, Virginia, United States
OnsiteFull Time
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
5d
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Test Automation Engineer (ACWS)
Arlington or United States
RemoteFull Time
3+ YOE3-5 years QA/test automation; Tosca Tricentis and FitNesse expertise; scripting in Java/Python/C#; Git; SDLC/Agile; DoD Secret clearance; US citizenship; BS degree in a relevant field.
FitNesse, Tosca Tricentis, Java, Python, C#, Git
1mo
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Mid Level Forward Deployed Software Engineer
Arlington, Virginia, United States
RemoteFull Time
3+ YOE3+ years software engineering; experience with Python, TypeScript, or Java in cloud-based data platforms; Palantir Foundry experience; defense/government environment familiarity; ability to deliver production-ready features.
Python, TypeScript, Java, Palantir Foundry, Foundry Workshop/Slate, Ontology
1mo
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Mid-Level Data Platform Engineer (Python) – Palantir Foundry / Jupiter Platform Support (Secret Cleared)
Washington, District of Columbia, United States
RemoteFull Time
Potawatomi Ventures: Provides data platform engineering and support services.
4+ YOE4–7 years data/platform engineering; Python pipelines; ETL/ELT; Palantir Foundry or Databricks or AWS data platforms; ERP/financial systems integration.
Python, SQL, Palantir Foundry, Databricks, AWS
2mo
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AI Software Engineer - Remote
Reston, Virginia, United States
$140k-$170k/yr RemoteFull Time
4+ YOE4+ years software engineering; 2+ years AI/ML apps; Python/TypeScript/Go; APIs, microservices; cloud platforms; secure coding; regulatory compliance (CMMC/NIST/DFARS); US Citizenship with Secret clearance.
Python, TypeScript, Go, APIs, Microservices, Kubernetes, Docker, CI/CD, Azure, AWS, GCP, LLM APIs
1w
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Full Stack Software Engineer
Reston or Chicago or Plano
$123k-$161k/yr HybridFull Time
2+ YOE2 years SDLC experience; backend Java/TypeScript/Python; Angular frontend; SQL/NoSQL; AWS; DevOps; GenAI tools; mortgage domain knowledge.
Node.js, Python, Java, Spring Boot, Angular, NgRx, RxJS, TypeScript, JavaScript, Git, Jenkins, Docker, Terraform, AWS CloudFormation, DynamoDB, PostgreSQL, Oracle, Postman, Putty, IntelliJ, VSCode
2w
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Lead Software Engineer - Gov Cloud
Reston, Virginia, United States
$130k-$195k/yr OnsiteFull Time
Secure, scalable software development; cloud automation; DevOps; Azure-focused; cross-functional communication.
Terraform, Ansible, ARM, Azure DevOps, C#, ASP.NET, Java, JavaScript, Python, Docker, AKS, Azure Functions, PowerShell, Bash, JSON, YAML
1w
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System Developer/Engineer
Washington, District of Columbia, United States
HybridFull Time
5+ YOE5+ years experience in systems engineering, scripting Bash/Python/PowerShell, Windows API, cloud solutions, ServiceNow, Entra admin, and architecture/design of systems.
ServiceNow, Bash, Python, PowerShell, Microsoft Entra, Intune, Zscaler, SolarWinds, Dynatrace
1w
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Senior Software Engineer
Arlington, Virginia, United States
HybridFull Time
7+ YOE7+ years C++ development; build/environments (Make/CMake); Linux; US work authorization; BS in Electrical Engineering or Computer Science; MS preferred; CI/CD experience a plus; GPU/AI/ML interest.
C++17, CUDA, TensorRT, Python, PyTorch, CMake, Docker, GitLab, GoogleTest, Pytest
1mo
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Software Engineer-Multiple Levels (DT-0/1/2)
Annapolis Junction, Maryland, United States
$170k-$230k/yr OnsiteFull Time
7+ YOEC++, Java, Linux; Python/JavaScript; Git/GitLab; Agile; 7+ years; BS in related field or 11 years experience in lieu.
C++, Java, Linux, Python, JavaScript, Git, GitLab, VSCode, Eclipse, Jira, Confluence
3w
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Software Engineer III - Back End (Remote)
McLean, Virginia, United States
$120k-$132k/yr RemoteFull Time
5+ YOE5+ years engineering experience; backend web development; RESTful APIs; open source stack; Git; SQL/NoSQL databases; Agile; TDD.
Ruby, Python, Django, Rails, REST, Git, GitHub, Elasticsearch, Solr, SQL, NoSQL
2w
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Agentic AI Engineer
United States or Alexandria
RemoteFull Time
5+ YOEExperience designing and deploying autonomous AI agents; strong Python skills; ML/AI with agent frameworks; cloud and MLOps; security awareness.
Python, FastAPI, asyncio, PyTorch, OpenAI Agents SDK, Autogen, LangGraph, Google ADK/A2A, retrieval-augmented generation, Knowledge graphs, LLMs, Cloud platforms, MLOps
2mo
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Machine Learning Engineer
McLean or Durham
OnsiteFull Time
Python with NumPy/pandas; PyTorch or TensorFlow; ML fundamentals; CV/NLP knowledge; DoD experience a plus; willing to relocate to Durham, NC
Python, NumPy, Pandas, PyTorch, TensorFlow, Git, CI/CD, Regression testing
1mo
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Staff Software Engineer - AI Focus
Tysons, Virginia, United States
OnsiteFull Time
8+ YOEBachelor's in CS/CE or related field; 8+ years software development; startup experience; AI-assisted full-stack expertise; strong Python, C#, JavaScript, distributed systems; experience with AI copilots; collaborative, action-oriented; strong IoT/SaaS knowledge.
.NET, SQL Server, Kafka, Ember.js, Node.js, iOS, Android
2w
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Aether Geolocation Engineer
Hawthorne or Washington
$180k-$230k/yr OnsiteFull Time
5+ YOEBS in Electrical Engineering or related field; 5+ years RF signal processing/geolocation experience; Python/MATLAB/C/C++; on-site in Hawthorne, CA or Washington, DC; U.S. citizen; ability to obtain security clearance.
Python, MATLAB, C++, DSP, GPU, FPGA
2w
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Consulting/Principal Software Engineer LNSSI
Washington or Virginia
$118k-$220k/yr OnsiteFull Time
2+ YOE2-3 years Linux systems administration; scripting in SQL/BASH/PYTHON/PHP/PERL; TS/SCI clearance with polygraph; B.S. in Computer Science or MIS; experience with big data systems.
SQL, BASH, PYTHON, PHP, PERL, ECL, HPCC
2w
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Software Engineer II, AI
Washington, District of Columbia, United States
$144k-$160k/yr RemoteFull Time
Bachelor's degree in IT/CS/Engineering; 2+ yrs Generative AI; 3+ yrs cloud (AWS); 4+ yrs DevOps; 2+ yrs agentic systems; 3+ yrs distributed cloud-native; 4+ yrs programming (Python/Java/Rust/SQL/Node.js).
AWS, GitHub, Bitbucket, AWS CloudFormation, AWS Lambda, AWS EKS, S3, LangGraph, Python, Java, Rust, SQL, Node.js
2w
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Senior Software Engineer - AI Fintech foundation
New York or Washington DC or Chicago
$110k-$300k/yr RemoteFull Time
5+ YOE5+ years in production ML systems or pricing platforms; Python, Scala, and SQL; data modeling, software architecture, and distributed data processing; strong collaboration.
Python, Scala, SQL, ETL, Machine Learning
2w
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AI/ML Software Developer - Top Secret
Tysons, Virginia, United States
$90k-$135k/yr OnsiteFull Time
2+ YOEActive Top Secret clearance; Bachelor’s in computer science or related field; minimum 2 years of relevant experience; JavaScript/Java/Python and OO programming; strong data structures and algorithms; experience with LLM tools.
JavaScript, Java, Python, Object-Oriented Programming, LLM tools
1w
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Lead AI/ML Engineer
McLean or Chantilly
$175k-$225k/yr HybridFull Time
8+ YOEAdvanced degree in CS/AI; 8+ years in AI/ML or software; production ML experience; Python and ML frameworks; cloud/Kubernetes; leadership; security clearance: Secret with TS/SCI readiness.
Python, PyTorch, TensorFlow, Scikit-learn, Kubernetes, AWS, CI/CD, Docker
1mo
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Front-End Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time, Contract
Tiber Technologies: Providing specialized engineering and security services for federal missions.
U.S. citizen with active clearance and polygraph; bachelor’s in computer science, engineering, or related field; front-end development experience.
Svelte, TypeScript, Java, MongoDB, Python
1mo
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Lead AI Engineer (Computer Vision & Fusion)
Washington, District of Columbia, United States
$100-$125/hr OnsiteFull Time
7+ YOESenior AI/ML leader with 7+ years ML/AI, 3+ years CV or multi-sensor fusion, Python, PyTorch/TensorFlow, Docker, TS/SCI clearance.
Python, PyTorch, TensorFlow, Docker, YOLO, Faster R-CNN, Kalman Filtering
1w
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Cloud Software Engineer CSWE3 - 27154
Hanover, Maryland, United States
OnsiteFull Time
Experience with front-end (Javascript/React) and back-end (Node.js, Python, Rust); microservices (Kubernetes, Helm); cloud migration; databases (MySQL, Redis, Neo4j); messaging (RabbitMQ/Kafka); testing (Jest); and related devops tools.
Kubernetes, Helm, Terraform, Ansible/Salt, Grafana, InfluxDB, Elasticsearch, Redis, MySQL, Neo4j, RabbitMQ, Kafka, NiFi, Superset, React, Javascript, Typescript, Node.js, Python, Rust, Shell, WebSockets, JBLOCKS, CASPORT, CAMKEY, LAC, COI
2w
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Consulting/Principal Software Engineer LNSSI
Washington or Virginia
$118k-$220k/yr OnsiteFull Time
2+ YOESecurity clearance TS/SCI with full-scope poly; BS in CS/MIS or related; 2-3 years Linux admin; scripting (SQL, Bash, Python, PHP, Perl); data analysis and scripting for big data systems
SQL, Bash, Python, PHP, Perl, ECL, HPCC, Kubernetes, AWS
2mo
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CNO Capability Developer (Linux) (Maryland, Fort Meade)
Fort Meade, Maryland, United States
OnsiteFull Time
3+ YOE3+ years software development; 3+ years embedded HW/SW; vulnerability analysis; Linux; Git; TS/SCI with Polygraph; Bachelor's degree; proficiency in multiple languages.
C, C++, Golang, JavaScript, Python, Ruby, Bash, Git, Linux, Wireshark, tshark
2w
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Platform Innovation Engineer (Rockville, MD, US, 20850)
Rockville, Maryland, United States
$54k-$70k/yr OnsiteFull Time
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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Forward Deployment Software Engineer
Reston, Virginia, United States
$200k-$288k/yr HybridFull Time
7+ YOE7+ years in distributed systems; container orchestration; IaC (Terraform/Pulumi); CS fundamentals; Java/C++/Golang/Python; public cloud experience; TS/SCI with Polygraph clearance; US citizenship; advanced degree in CS.
Terraform, Pulumi, Kubernetes, Cloud Platforms (AWS, Azure, GCP), Java, C++, Go, Python
HiringCafe market data
Python 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
3,900+
Hiring companies
800+
Fresh sample
55% new in 30d
Salary visibility
57% show pay
Companies appearing in this market
CredenceDeepSigEverWatchFannie MaeGlobal InfoTekLegatoLMIOslitandi Tech
Work location mix in visible results
Onsite: 49Hybrid: 23Remote: 21