📣 HiringCafe is hiring a Founding Growth Hacker! Learn More · Apply here
Limited-index browse page
Lead Python Developer Jobs in Montclair, VA, US
420+ lead python developer jobs from 120+ companies hiring in Montclair, VA, US.
1mo
Save
Mark Applied
Hide
Lead Embedded Software Engineer, Electronic Warfare (Onsite) - Sign On Bonus Eligible
Arlington, Virginia, United States
$146k-$277k/yr HybridFull Time
7+ YOEMaster's or Bachelor's with extensive embedded software experience; DoD clearance required; leadership and mentoring skills; strong C/C++, Python, DSP, embedded Linux, and hardware-software integration.
C/C++, Python, MATLAB, Embedded Linux, ARM processors, SoC, DSP, Verilog, VHDL
1mo
Save
Mark Applied
Hide
Lead Data Engineer – Financial Data, Compliance & Business Intelligence
Chicago or Washington or Sarasota or Hartford or Costa Mesa or San Jose or Atlanta or Boston or Cleveland or Columbus or Dallas or Fort Lauderdale or Fort Wayne or Grand Rapids or Indianapolis or Los Angeles or Miami or New York City or Oak Brook Terrace or Sacramento or San Francisco or South Bend or Tampa or Houston or Austin
$111k-$226k/yr OnsiteFull Time
3+ YOE3+ years ETL development; experience with Bank Secrecy Act/AML regulations; consulting experience; strong ETL/EDW skills; Python/Java; cloud data warehousing (Azure/AWS/Snowflake); excellent communication and teamwork.
ETL tools, Python, Java, Azure, AWS, Snowflake
2mo
Save
Mark Applied
Hide
Lead Engineer - Advanced Data Science for Aerospace Systems
Newport News or Arlington or St Paul or Ronkonkoma
$100k-$155k/yr HybridFull Time
7+ YOELead engineer with 7–10 years in aerospace engineering, AI/ML, CFD/FEA, and team leadership.
CFD, FEA, Machine Learning, AI, Python, MATLAB
4d
Save
Mark Applied
Hide
ME00587-Agile Developer 5
Annapolis Junction, Maryland, United States
$160k-$220k/yr OnsiteFull Time
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
3w
Save
Mark Applied
Hide
Senior Software Engineer
Fredericksburg, Virginia, United States
OnsiteFull Time
Obsidian Solutions Group: Delivers technology-enabled and mission-oriented solutions to government agencies.
8+ YOE3+ MgmtLead software architect; 8+ years in software development; distributed simulation, Unity/Unreal, C#/Python/JavaScript; DevSecOps and containers.
Unity, Unreal, C#, Python, JavaScript, TypeScript, Docker, Kubernetes
1mo
Save
Mark Applied
Hide
Lead Full Stack Engineer - AI/ML Systems
Reston, Virginia, United States
$121k-$189k/yr HybridFull Time
6+ YOELead full stack engineer with 6+ years software development, 3+ years full-stack design/deploy, 2+ years AI/ML in production; US Citizenship and TS/SCI clearance required.
Python, JavaScript, TypeScript, Vue, React, Flask, Django, FastAPI, Express.js, PostgreSQL, MySQL, Elasticsearch, OpenSearch, Docker, Kubernetes, OpenShift, AWS, GovCloud, Terraform, Ansible, Git, GitLab, GitHub, Ray Serve, vLLM, Ollama, TorchServe, Triton
1mo
Save
Mark Applied
Hide
Lead Systems Engineer (Modeling, Simulation, & Analysis)
Chantilly, Virginia, United States
HybridFull Time
10+ YOETS/SCI clearance; Bachelor's in Science/Engineering/Math; 10+ years in modeling, simulation, and analysis; strong requirements development; space systems experience; effective communication.
Aerospace modeling tools, Python, STK, AFSIM
1mo
Save
Mark Applied
Hide
Lead Machine Learning / Data Science Engineer
Reston, Virginia, United States
OnsiteFull Time
7+ YOELead ML/DS engineer with 7+ years in data engineering and ML; cloud platforms; Python/Scala; SQL/Spark; Docker; Snowflake/Databricks; LLMs; DevOps; cross-domain experience; leadership.
Python, Scala, SQL, Spark, NoSQL, Snowflake, Databricks, Azure SQL, Amazon RDS, Docker, Kubernetes, LLMs, LangChain, RAG, pydantic, n8n, Mistral
1d
Save
Mark Applied
Hide
FCC - Lead PAM Engineer
Washington, District of Columbia, United States
RemoteFull Time
7+ YOE7+ years in cybersecurity/PAM engineering; bachelor's in cybersecurity/IT/CS or related field; experience with large enterprises and IAM/tools.
CyberArk, BeyondTrust, Delinea, Active Directory, LDAP, SSO, MFA, Federation, SIEM, SOAR, PowerShell, Python, AWS, Azure, M365
6d
Save
Mark Applied
Hide
Radio Frequency Software Engineer Lead - 1648
Reston, Virginia, United States
RemoteFull Time
7+ YOE7-10 years RF software engineering, Python, Linux, CI/CD, MySQL/PostgreSQL, remote work; US citizenship and Public Trust.
Python, Linux, GitLab, MySQL, PostgreSQL, SQLite, FlatBuffers, Protocol Buffers, React, D3
1mo
Save
Mark Applied
Hide
AI Tech Lead
McLean, Virginia, United States
$160k-$190k/yr OnsiteFull Time
5+ YOELead and mentor AI/ML development team; architect and deploy scalable AI/ML systems; strong Python and ML framework skills; public trust clearance.
TensorFlow, PyTorch, scikit-learn, Docker, Kubernetes, AWS, Azure, GCP
5d
Save
Mark Applied
Hide
Senior Software Engineer/Architect
Laurel, Maryland, United States
$105k-$290k/yr OnsiteFull Time
7+ YOEB.S. in CS/CE; 7+ years software development; Python; technical lead experience; web development with modern JS frameworks; non-relational DBs; TS/SCI eligibility.
Java, Python, JavaScript, Vue.js, ReactJS, Angular, MongoDB, CouchDB, HBase, SQL Server, MySQL, Postgres
2mo
Save
Mark Applied
Hide
Lead Kubernetes Platform Engineer (AWS/EKS) - TS/SCI w/Polygraph
Herndon, Virginia, United States
$213k-$288k/yr HybridFull Time
15+ YOE15+ years experience; TS/SCI w/ Polygraph; lead a team; Kubernetes, AWS, EKS, Terraform HCL; Python; shell scripting; multi-tenant Kubernetes platforms; security clearances.
AWS, Kubernetes, Terraform, Python, Shell Script
3w
Save
Mark Applied
Hide
Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
14+ YOE14+ years SWE exp; BS in Computer Science; Python, Docker, AWS, Kotlin; ability to lead and design software components.
Python, Docker, AWS, Kotlin, OpenSearch, Terraform, S3
1w
Save
Mark Applied
Hide
Lead Security Operations Engineer
Arlington, Virginia, United States
HybridFull Time
8+ YOE8+ years in security operations, defense startups, automated security stacks, incident management, cloud security, and compliance with NIST 800-171/CMMC.
SIEM, EDR, Cloud Security, Kubernetes, Python, Bash, CI/CD Security, Threat Hunting, NIST 800-171, CMMC
2mo
Save
Mark Applied
Hide
Software Developer (SME)
Washington, District of Columbia, United States
OnsiteFull Time
7+ YOEUS citizenship; Top Secret/SCI clearance; 7+ years of relevant experience; BS in Computer Science, Information Systems, Engineering, or Business; strong Python/Java/C++ skills; ability to lead projects.
Python, Java, C++
4w
Save
Mark Applied
Hide
Senior Back End Developer
Lackland AFB or Fort Meade
OnsiteFull Time
10+ YOEDoD TS clearance required; TS/SCI preferred; 10+ years software development; 5+ years backend web development; 10 years relational databases and RESTful APIs; 5 years Python and PostgreSQL; 5 years Jira; 5 years web testing; 5 years leading software programs; 3 years AWS, Kubernetes, RedHat Linux; 5 years with five of: PostgreSQL, RDS, Exodus, Pyth...
Python, PostgreSQL, Docker, Ansible, Terraform, AWS, Kubernetes, OpenStack, Java, Puppet, Chef, Maven, OpenJDK, REST APIs, Git
3w
Save
Mark Applied
Hide
Senior Full Stack Developer
Herndon, Virginia, United States
OnsiteFull Time
10+ YOESenior full stack developer with 10+ years of software development, AI/ML exposure, and ability to lead modernization efforts.
Java, Python, Node.js, JSP, Tomcat, jQuery, SQL, ETL, APIs, CI/CD, Cloud
2w
Save
Mark Applied
Hide
Software Engineer 2
Annapolis Junction, Maryland, United States
OnsiteFull Time
8+ YOEEight years of SWE experience; Bachelor's in CS or related field; Grafana/Bash/Python/JavaScript/React experience; able to lead teams.
Grafana, Bash, Python, JavaScript, React, Transcript
5d
Save
Mark Applied
Hide
CNO Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
Proficient in C/C++, Python, and Assembly; OS internals; network programming; debugging; testing frameworks; team collaboration; willingness to lead and mentor.
C, C++, Python, Assembly, Windows, Linux, Android, iOS, Embedded, Ghidra, IDA Pro, Binary Ninja, Radare2, Git, Svn, GoogleTest, CMock, Catch2, pytest, WinDBG, gdb, lldb, adb, OllyDbg, MsBuild, CMake, make, ninja, wheel, tox, Valgrind, clang-tidy, pylint, black, Docker, Ansible, CI/CD, Atlassian, GitLab, CircleCI, Jenkins
1mo
Save
Mark Applied
Hide
Engineer Senior Principal – Lead Mission Analyst
Broomfield or Chantilly
$133k-$226k/yr OnsiteFull Time
8+ YOE2+ MgmtBS in Engineering or related field; 8+ years experience; Top Secret/SCI clearance; Python; strong communication; leadership and mentoring; tool development and data analysis.
Python, Modeling and Simulation, STK, AFSIM, Model Based Systems Engineering
4d
Save
Mark Applied
Hide
Lead Data Engineer / Mission Data Pipeline
Reston, Virginia, United States
OnsiteFull Time
9+ YOE9+ years experience with relevant degree; active Top Secret clearance; 7+ years in DoD/IC environments; experience with data pipelines and structured data formats (JSON, CSV, XML).
JSON, CSV, XML, Python, Pandas, NumPy, ETL, Data Pipelines, NiFi, Airflow, Palantir Foundry, REST APIs
3w
Save
Mark Applied
Hide
Software Engineer, Level 3 (FORECASTED)
Fort Meade, Maryland, United States
OnsiteFull Time
Lead software development, provide technical leadership, design, develop, test, and maintain complex software; SDLC/Agile, SQL, architecture, and team leadership.
Java, Python, C, C++, SQL, Spring, Hibernate, Jenkins, CI/CD, Docker, Kubernetes, OpenShift, Kibana, Grafana, Nagios, Shell, Bash
2w
Save
Mark Applied
Hide
Lead Underground Transmission Line Engineer 2 - Grid
Washington, District of Columbia, United States
$132k-$205k/yr HybridFull Time
12+ YOEBS in engineering; PE license; CYMCAP; cable tensioning software; 12+ years leading underground transmission projects; design to code standards; cost/schedule experience.
CYMCAP, Cable tensioning software, Python, MATLAB, MS Excel, MS Office
1mo
Save
Mark Applied
Hide
Senior Software Systems Engineer, Product Owner
Chantilly or Seal Beach
OnsiteFull Time
5+ YOE5+ years in software development with Java/C/C++/Python; experience leading software projects; active Top-Secret/SCI eligibility with CI Polypost-start.
Java, C++, Python, HTML, CSS, JavaScript, React, Spring Framework, Hibernate, RDBMS, NoSQL, REST/Open API, CI/CD, Jenkins, GitLab CI, Maven, Gradle, JMS, WebLogic, SQL Server, Oracle, MySQL, MongoDB
1w
Save
Mark Applied
Hide
Lead Systems Engineer/Architect
Ashburn, Virginia, United States
OnsiteFull Time
12+ YOE5+ MgmtExtensive systems engineering and software architecture experience; 12+ years; leadership in architecture decisions; DoD compliance experience; edge/cloud architectures; CI/CD; Python/C++.
Python, C++, Rust, Go, Docker, Kubernetes, Terraform, AWS, Azure, GCP, MQTT, DDS, OPC UA, CoAP
1mo
Save
Mark Applied
Hide
Staff Engineer
Bethesda or Austin or Palo Alto or Seattle
$115k-$230k/yr HybridFull Time
6+ YOELead engineer with 6+ years software development in C#/Java/Python, microservices, cloud, DevOps, architecture, and strong communication.
Java, Python, SQL, NoSQL, Docker, Kubernetes, Azure, PowerShell
1w
Save
Mark Applied
Hide
Principal AI Engineer
Herndon, Virginia, United States
OnsiteFull Time
6+ YOELead AI engineer with 6-10 years in AI/ML, cloud-native infra, Kubernetes, Python/Go, and experience deploying AI services; TS/SCI clearance preferred.
Kubernetes, Python, Go, REST APIs, vLLM, OpenAI, AWS Bedrock, Azure OpenAI
1d
Save
Mark Applied
Hide
Lead IT Engineer - Productivity Systems
Durham or Miami or Palo Alto or Washington D.C.
$12k-$18k/mo HybridFull Time
Senior-level engineer with expertise in enterprise automation, AI governance, and internal tooling standards. Strong AWS, automation tools (n8n, Postman), and AI/LLM familiarity required.
Clojure, Java, Python, AWS, SES, Lambda, IAM, Terraform, CloudFormation, n8n, Postman, Zapier, Copilot, Cursor
2w
Save
Mark Applied
Hide
Applied AI ML lead
McLean or Wilmington
OnsiteFull Time
3+ YOELead AI/ML in cybersecurity; develop ML models; strong Python, PyTorch/Scikit-Learn; SQL; data analysis.
Python, Pandas, SQL, Data Visualization, Matplotlib, Seaborn, Plotly, PyTorch, Scikit-Learn, Jupyter, SageMaker Notebooks
2mo
Save
Mark Applied
Hide
Delivery Engineering Lead
Washington, District of Columbia, United States
$235k-$255k/yr OnsiteFull Time
10+ YOE3+ Mgmt10+ years software engineering; 3+ years engineering leadership; deployment automation expertise; strong Go/Python/Java skills; AI tooling experience; DevOps and IaC (Terraform, Ansible); stakeholder management.
Go, Python, Java, Terraform, Ansible, GitHub Copilot, Claude Code
3mo
Save
Mark Applied
Hide
Senior Agentic AI Technical Lead
McLean, Virginia, United States
HybridFull Time
10+ YOE5+ Mgmt10+ years software engineering; 5+ years technical leadership; agentic AI systems; IL5+ cloud; DoD compliance; leading multiple agile teams; Python/TypeScript expertise.
Python, TypeScript/JavaScript, REST, gRPC, OpenAPI, microservices, Kafka, SQS, SQL, NoSQL
1mo
Save
Mark Applied
Hide
AI Integration Lead
Washington, District of Columbia, United States
OnsiteFull Time
5+ YOEBachelor in CS or Data Science; 5+ years professional experience; 3+ years AI-focused experience; Python/SQL; RESTful APIs; AWS cloud; computer vision; civil engineering/geospatial exposure; strong communication.
Python, SQL, RESTful APIs, AWS, S3, Lambda, Computer Vision, Geospatial Data
2d
Save
Mark Applied
Hide
Testing Lead/Architect
Ashburn, Virginia, United States
HybridFull Time
10+ YOE4+ MgmtUS citizen; bachelor’s in CS/Engineering; 10+ years IT experience; expert in automation frameworks; Kubernetes, Helm, Podman; AWS; CI/CD; Python/Node.js/Go; strong communication; onsite 4 days/week in Ashburn, VA.
Kubernetes, Helm, Podman, AWS, Python, Node.js, Go, Playwright, Selenium
1mo
Save
Mark Applied
Hide
Senior Software Systems Engineer, Product Owner
Chantilly or Seal Beach
$158k-$214k/yr OnsiteFull Time
5+ YOE5+ years in CS with OO design; Java/C++/Python full-stack; lead projects; active TS/SCI with CI poly; security clearance.
Java, C++, Python, HTML, CSS, JavaScript, React, Spring, Hibernate, REST API, Jenkins, GitLab CI, JMS, WebLogic, Maven, Gradle, SQL, NoSQL, MongoDB, SQL Server, Oracle, MySQL
2w
Save
Mark Applied
Hide
Engineer Senior Principal – Lead Mission Analyst
Aurora or Chantilly
$133k-$226k/yr OnsiteFull Time
8+ YOE8+ years related experience; BS in Engineering or related field; TS/SCI clearance or ability to obtain; Python programming; strong communication and analytic modeling.
Python
2w
Save
Mark Applied
Hide
Engineer Senior Principal – Lead Mission Analyst
Aurora or Chantilly
$133k-$226k/yr OnsiteFull Time
8+ YOEBS degree in engineering with 8+ years related experience; TS/SCI clearance with ability to obtain; Python programming; strong written and verbal communication; analytics and modeling experience.
Python, modeling and simulation, data analysis
6d
Save
Mark Applied
Hide
Geospatial Systems Software Engineer, Senior
Springfield, Virginia, United States
$162k-$219k/yr HybridFull Time
General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.
10+ YOELead geospatial systems engineering in DoD environments; 10+ years; TS/SCI; US citizenship; BS/MS in IS or related; ArcGIS, PostGIS, DevSecOps; Python/JS/C/C++; CI/CD; architecture and mentoring.
Python, JavaScript, C++, C#, SQL, ArcGIS Enterprise, QGIS, GeoServer, PostGIS, Docker, Kubernetes, OpenShift, CI/CD, RMF, ENVI, RemoteView, Erdas Imagine, Skyline
2d
Save
Mark Applied
Hide
Senior IT Associate-Software Technical Lead (Contingent)
Bethesda, Maryland, United States
$114k-$135k/yr HybridContract
10+ YOE10+ years in software development; full-stack exp; TypeScript/Python/React/Vue; APIs with Java/Node.js; Docker/Kubernetes; Agile/DevOps.
TypeScript, Python, React, Vue.js, Java, Node.js, Docker, Kubernetes, Jenkins, GitHub Actions, GitLab CI
1w
Save
Mark Applied
Hide
Principal Software Engineer
Herndon, Virginia, United States
$139k-$185k/yr RemoteFull Time
5+ YOELead design and build of a high-performance pricing engine; expert in distributed systems and modern languages.
C/C++, Rust, Go, Python, Linux, Distributed systems, APIs, Zero-copy, Lock-free data structures
HiringCafe market data
Lead 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
420+
Hiring companies
120+
Fresh sample
56% new in 30d
Salary visibility
63% show pay
Companies appearing in this market
BAE SystemsBoeingGEICOJohns Hopkins University Applied Physics LaboratoryRTXSteampunkAgile DefenseGeneral Dynamics Information Technology
Work location mix in visible results
Onsite: 38Hybrid: 20Remote: 4