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Python Developer Jobs in Montclair, VA, US
4,000+ python developer jobs from 810+ companies hiring in Montclair, VA, US.
1mo
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Software Engineer (Remote)
Reston, Virginia, United States
RemoteFull Time
3+ YOE3-5 years progressive software engineering experience; U.S. citizenship and ability to obtain government clearance; BS in computer science or related field; strong full-stack skills in Nuxt/Vue.js, Python; REST APIs; databases; Kubernetes; cloud familiarity.
Nuxt, Vue.js, Python, REST APIs, Kubernetes, AWS, Azure, MSSQL, PostgreSQL, PKI, OAuth2/OpenID Connect
2mo
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Software Engineer Level 3
Annapolis Junction, Maryland, United States
OnsiteFull Time
20+ YOETS/SCI clearance with polygraph; 20 years SWE in programs/contracts; BS CS or related, 4+ years SWE subspecialty; Go/Python; Kubernetes; GitOps; Terraform; cloud automation.
Go, Python, Kubernetes, Helm, GitOps, Kafka, Terraform, Ansible
1mo
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Cleared AI/ML Software Engineer - Expert
Fairfax, Virginia, United States
$180k-$240k/yr OnsiteFull Time
10+ YOE10+ years software development, 5+ years AI/ML, TS/SCI with poly clearance, strong Python/Java/JS/C/C++, AWS, ML frameworks.
Python, Java, JavaScript, C++, Rust, PyTorch, TensorFlow, Scikit-learn, SQL, NoSQL, REST, GraphQL, Linux, AWS
1w
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Senior Software Engineer
Arlington, Virginia, United States
HybridFull Time
7+ YOE7+ years C++ development; BS in Electrical Engineering or Computer Science; US work authorization; build system experience; technical leadership; on-site/Hybrid in Arlington, VA.
C++, CUDA, TensorRT, Python, PyTorch, CMake, Docker, GitLab, GoogleTest, pytest
2w
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AI Solution Engineer – Platform
Huntsville or Washington
$90k-$175k/yr HybridFull Time
4+ YOE4+ years data/ML engineering, Python/SQL, cloud data platforms, DevOps, and TS/SCI clearance eligibility.
Python, SQL, Java, Scala, Go, PostgreSQL, Snowflake, Neo4j, Amazon Neptune, REST APIs, Docker, Kubernetes, Git, GitHub Actions, GitLab CI, Jenkins, Terraform, CloudFormation, Pulumi, D3.js, Plotly, Terraform, Pulumi, Kubernetes
2w
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Cyber Systems Engineer
Annapolis Junction or Washington
$160k-$190k/yr HybridFull Time
Design and deliver real-time data processing software for edge and backend systems; strong Rust, Python, Bash; security-focused engineering experience; capable of independent work.
Rust, Python, Bash, Linux, TCP/IP
1mo
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Software Engineer (Hybrid)
Alexandria, Virginia, United States
HybridFull Time
4+ YOEUS citizen; SECRET clearance; BS in software engineering or computer science; 4+ years of hands-on software development; experience with CI/CD, distributed systems, networking, embedded software.
C++, Java, Python, .NET, SQL, MySQL, Oracle, GitLab, Docker, Kubernetes, FPGA interfaces, SDR, USRP, HackRF, BladeRF
2w
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Software Engineer (76185)
Columbus or Chantilly
HybridFull Time
2+ YOEBachelor's in computer science, computer engineering, electrical engineering, or related field with 2+ years experience; proficient in Python, C, C++, or C#; comfortable in Windows and Linux; Git; build systems (CMake/Make, Poetry); containerization (Podman/Docker/Singularity); able to work in DoD environment.
Python, C, C++, C#, Git, CMake, Make, Poetry, Docker, Podman, Singularity, PowerShell, Bash
3w
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Senior Prototyping Engineer
Austin or Reston or United States
HybridFull Time
5+ YOE5+ years of JavaScript/TypeScript, React/Next.js, Python/FastAPI; AI/LLM knowledge; strong UX/design sense; prototyping with JSON APIs; Agile mindset; excellent communication.
React, Next.js, JavaScript, TypeScript, Python, FastAPI, JSON APIs, Figma, AI Coding assistants, Claude Code, Cursor, LLMs
2mo
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Machine Learning Engineer
Arlington or United States
$110k-$160k/yr OnsiteFull Time
Bachelor's or Master's in CS/ECen or related field; Python; deep learning libraries; ML with visual data; TS/SCI with US citizenship; travel; on-site work in NCR area.
Python, PyTorch, TensorFlow, C++
6d
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Senior AI/ML Engineer
New York or Santa Monica or Los Angeles or Palo Alto or Chicago or Washington D.C. or Boston or Colorado or Seattle or San Francisco or San Diego or Reston
OnsiteFull Time
5+ YOE5+ years in AI/ML; hands-on with Azure/AWS; Python; LLMs; data integration; LangChain or similar; cloud security and governance.
Python, Azure, AWS, LangChain, LangSmith, Pydantic AI, APIs, Data Ingestion, Data Lakes, Data Warehouses
2mo
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Sr. Web Application Developer #1703183
Chantilly, Virginia, United States
$121k-$135k/yr OnsiteFull Time
8+ YOEDesign, develop, test web apps; US citizenship; active TS clearance with SCI access and CI polygraph; onsite Chantilly, VA; 8+ years web development; BS in CS/Software Engineering; SAFe and agile experience; 508 compliance; modern frontend and backend tech; cloud and DevSecOps.
Angular, React, .NET C#, Python, Node.js, JavaScript, TypeScript, HTML5, CSS3, Bootstrap, MySQL, PostgreSQL, Microsoft SQL, Elasticsearch, RabbitMQ, Redis, Docker, Kubernetes, AWS GovCloud, SC2S, C2S, DevSecOps
2mo
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Web Developer (TS/SCI CI Poly)
Chantilly, Virginia, United States
OnsiteFull Time
4+ YOE4+ years web development experience; HTML, JavaScript, CSS; C#.NET and Bootstrap; AWS cloud services; strong problem solving and multitasking.
HTML, JavaScript, CSS, Bootstrap, C#.NET, SQL, Ruby on Rails, AWS, Python
4h
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Backend Developer (St. Louis, MO / Springfield, VA)
Alexandria or Springfield or St. Louis
$75k-$200k/yr OnsiteFull Time
3+ YOEBackend service/API development, REST APIs, cloud/on-prem deployments, containerization, and security for geospatial platforms.
Python, JavaScript, Node.js, Java, Docker, Kubernetes, ArcGIS Enterprise, REST APIs, CI/CD, Scripting, Infrastructure as Code
4d
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AI Automation Engineer
Richmond, Virginia, United States
HybridFull Time
3+ YOE3+ years in data science, ML, or automation engineering; strong Python; production AI/ML experience; LLMs, prompt engineering; data pipelines/ETL; MLOps; ERP/CRM integrations.
Python, LLMs, Prompt engineering, LangChain, AutoGen, ETL, MLOps, ERP, CRM, Tableau, Power BI
6d
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Backend Software Engineer
Gaithersburg or Alexandria or Chantilly or St. Louis or Tucson
OnsiteFull Time
8+ YOEUS citizen; TS/SCI with poly; BS in CS/SE with 8–12 yrs (MS with 6–10); Java or Python; REST APIs; SQL; Linux; ability to work independently.
Java, Python, REST, SQL, Linux, Apache Airflow, Spring Boot, Django, GitLab, Jenkins, Docker, OpenShift, AWS, Azure, Agile
3d
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Cleared Software Engineer
Chantilly, Virginia, United States
$69k-$116k/yr OnsiteFull Time
0+ YOEBachelor's in CS/IS or related field; strong programming knowledge; experience with Java, Scala, Python, Golang; AWS, Kubernetes, Docker; CI/CD tooling; DoD/Intelligence Community exposure preferred.
Java, Scala, Python, Golang, Kubernetes, Docker, AWS, Gitlab CI/CD, ArgoCD, CircleCI, Jenkins, Kafka, NiFi
6d
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Senior Software Engineer - APIs
Ashburn, Virginia, United States
$120k-$145k/yr RemoteFull Time
5+ YOE5+ years Java 8+ with Spring; AWS; SQL; Snowflake; Scala/Python; web services; GA/DG experience; English fluency.
Java, Spring Framework, AWS, SQL, Snowflake, Scala, Python, JSON, GeoJSON, Git, Unit testing, Docker, Kubernetes
3d
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Lead Agentic AI Engineer
Lanham, Maryland, United States
$165k-$175k/yr RemoteFull Time
6+ YOE6+ years software engineering with 2+ years AI/ML or agentic systems; shipped agents; strong Python; enterprise integration experience.
Python, LLM APIs, Vector databases, Embeddings, Retrieval systems, Orchestration, APIs, CRMs
2w
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IT Spec (APPSW) "Principal Software Engineer", GS-2210-15, FPL GS-15 (DH), Full-time
San Francisco or Denver or Washington or Atlanta or Chicago or Salt Lake City or Seattle
$150k-$197k/yr RemoteFull Time
1+ YOESenior software engineer with cloud-native design, CI/CD, and cross-language development (Python, Java, JavaScript); leadership and architectural responsibilities.
Python, Java, JavaScript, CI/CD, Infrastructure as Code, Cloud platforms
1mo
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Senior Software Engineer
New York or Austin or Washington
$190k-$235k/yr HybridFull Time
5+ YOE5+ years of full-time software engineering; expert in JS, Python, Java or equivalent; experience building scalable production applications; strong communication; ability to balance speed with quality; fintech interest.
JavaScript, Node.js, React, Python, Java
2mo
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Embedded Platform Engineer
Washington, District of Columbia, United States
RemoteFull Time
3+ YOE3+ years building and operating production systems; strong scripting in Python/TypeScript; CI/CD, containers, cloud platforms; AI tooling; security/compliance awareness; eligible for U.S. Secret clearance.
Python, TypeScript, GitHub Actions, Docker, Kubernetes, Azure, AWS, GCP, JFrog, CI/CD, AI tooling
2w
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Junior Software Engineer
Fort Belvoir, Virginia, United States
OnsiteFull Time
Bachelor's in CS/Engineering or related field; US citizenship and ability to obtain/maintain a secret clearance; Java, C++, or Python; knowledge of SDLC; strong problem-solving and teamwork; up to 25% travel.
Java, C++, Python
2mo
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AI Developer
Washington, District of Columbia, United States
$66k-$124k/yr OnsiteFull Time
4+ YOE4+ years AI development; skilled in Visual Studio and Python; experience with AI/LLMs and integrating AI with test automation; bachelor’s degree required or three years of progressive experience; willingness to travel.
Visual Studio, Python, Visual Studio Code, LLMs, Crew AI, Co-pilot, TFS
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
4+ YOEMid-level data platform engineer with 4–7 years in data engineering or platform engineering; Python; Palantir Foundry/Jupiter experience; SQL; secret clearance; remote eligible in National Capital Region.
Python, SQL, Palantir Foundry, Databricks, AWS
3mo
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Software Engineer (TS/SCI) {S}
Chantilly, Virginia, United States
OnsiteFull Time
Active TS/SCI clearance; degree in CS/EE/Physics or related; programming in Python/C++/Rust; Linux/cloud experience; onsite work; strong problem-solving.
Python, C++, Rust, Linux, AWS
1mo
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Senior Software Developer - Clearance Required
Reston or Joint Base Anacostia-Bolling
HybridMultiple Commitments Available
6+ YOE6+ years in distributed software development; frontend tech stack (Vue, JavaScript, TypeScript); backend services; Agile; TS/SCI clearance preferred.
Vue, JavaScript, TypeScript, React, Angular, Linux, Git, Jira, Confluence, Artifactory, APIs, Relational databases, NoSQL, Agile, Security-focused development, CI/CD, Python, Java, Docker, Kubernetes, OpenShift, Jenkins, Keycloak, OAuth2, JWT, SonarQube, OWASP ZAP, Fortify, CI/CD pipelines, AWS, Azure, CI/CD
3w
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Principal Engineer - Agentic AI Applications
Washington, District of Columbia, United States
$168k-$230k/yr HybridFull Time
12+ YOE12+ years software engineering; 4+ years in technical leadership; production experience with LLM-powered or agentic systems; Python backend expertise; strong observability, architecture, and testing skills
Python, LangGraph, AutoGen, CrewAI, TypeScript, Node.js, RAG pipelines, vector databases, tool-calling APIs, multi-step reasoning
1mo
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UX Engineer / Front-End Engineer – TAK (ATAK/WinTAK)
Chantilly, Virginia, United States
OnsiteFull Time
3+ YOE3-5 years UX/UI development; experience with ATAK/WinTAK/TAK Server; strong Java and front-end skills; API/data stream integration; TS clearance (TS/SCI preferred).
Java, React, Angular, Vue, Kotlin, Python, GitLab, ATAK, WinTAK, TAK Server
1w
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Embedded Developer
Annapolis Junction, Maryland, United States
OnsiteFull Time
5+ YOESix years with BS or one year with MS in CS/EE/CE, or five+ years embedded development; low-level programming; C/C++/Python; embedded testing; lifecycle management; good communication.
C, C++, Python, Embedded systems, VxWorks, uC/OS
3w
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Software Development Engineer II- Back End
Vienna, Virginia, United States
$97k-$162k/yr OnsiteFull Time
2+ YOE2+ years backend software engineering; Python/Node/Java; REST APIs; ArcGIS Enterprise; containers (Docker/Kubernetes); security clearance; BS in CS/Math/GIS/STEM
Python, JavaScript/Node.js, Java, Docker, Kubernetes, ArcGIS Enterprise, REST APIs, Geoprocessing
1d
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Web Developer (Mid-level) (SWE I) (Government)
Columbia, Maryland, United States
$108k-$170k/yr OnsiteFull Time
7+ YOESeven years as a Software Engineer in similar scope; BS in CS; TS/SCI clearance; experience with AWS, Linux, APIs; proficiency in PHP, C#, Java, Node.js, Python, HTML/CSS/JS, React or Vue.
AWS, Azure, Linux, Nginx, Apache, Tomcat, PowerShell, Python, JavaScript, TypeScript, HTML, CSS, Node.js, React, Vue.js, .NET C#, Java, SQL
1mo
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Senior Software Engineer, Full Stack
Arlington, Virginia, United States
$135k-$180k/yr OnsiteFull Time
6+ YOE6+ years software engineering; experience profiling and optimizing data-intensive web apps; TS or Python; Bachelor's degree
TypeScript, Python, React, Cesium, Kubernetes, HTML/CSS
2w
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Senior Cloud Software Engineer
Annapolis Junction, Maryland, United States
$200k-$280k/yr OnsiteFull Time
6+ YOEActive TS/SCI with Polygraph clearance; U.S. citizenship; 6+ years software development; cloud development certifications; strong communication; independent and team work.
NiFi, DataXplorer, GMAE, Java, Python, Scala, Pig, MapReduce, Spark, XML, CSV, JSON, AWS, Kubernetes
4d
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Embedded Firmware Engineer
Carson City or Webster or Harbor City or Platform or Jessup or Clinton or Newark or Longmont
$79k-$150k/yr OnsiteFull Time
2+ YOEBS or MS in Electrical Engineering or related robotics field; 2+ years Level I, 5+ Level II, 8+ Level III firmware/embedded software; C++, Python; RTOS; hardware bring-up; ITAR compliance.
C++, Python, C, VHDL, Verilog, Linux, RTOS, ROS, Git, EtherCAT, SPI, CAN, I2C, UART, RS-232
4d
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Forward-Deployed Engineer
Washington, District of Columbia, United States
$185k-$260k/yr RemoteFull Time
Legion Intelligence: Secure generative AI platform for defense and enterprise workflows.
4+ YOE4+ years in forward deployed/solution engineering; full-stack; Python/JS/TS; enterprise integrations; UI with Node/Next/React; autonomous; strong communicator; US citizens/Green Card holders; TS/SCI clearance.
Python, JavaScript, TypeScript, Node.js, Next.js, React, Palantir Foundry, Databricks, ServiceNow, Microsoft O365, Atlassian, n8n
1mo
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DevOps Engineer
McLean or Chantilly
OnsiteFull Time
3+ YOEActive TS/SCI clearance with CI Poly; U.S. Citizenship; 3+ years in DevOps/SRE/Cloud; Python/Bash; Kubernetes; cloud infra; secure environments.
Terraform, Ansible, Docker, Kubernetes, Jenkins, GitLab CI, CircleCI, CloudFormation, Prometheus, Grafana, ELK Stack, AWS, Azure, GCP
5d
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Senior QA Automation Engineer
Bethesda or Rockville
$120k-$130k/yr HybridFull Time
5+ YOE5+ years QA automation, Playwright, React/.NET, PowerApps, Python, GitHub/Jira/AWS, public trust clearance.
Playwright, React, .NET, PowerApps, Python, GitHub, Jira, AWS, Entra (Azure AD)
1mo
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AI Developer
Springfield, Virginia, United States
OnsiteFull Time
5+ YOE5–10+ years in AI/ML development and data analytics; Top Secret clearance; BS/BA in CS/Data Science/Engineering/Information Management; Python and ML frameworks; DoD/Federal records policies knowledge.
Python, TensorFlow, PyTorch, scikit-learn, Hugging Face
2w
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Junior Java Developer (Remote Opportunity)
Washington or Philadelphia
RemoteFull Time
0+ YOEEntry-level Java developer with a BS in CS/IT/Engineering; knowledge of Java or similar; basic full-stack concepts; strong problem-solving and communication; ability to work in Agile team.
Java, C#, Python, JavaScript, PHP, React, Angular, Node.js
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
4,000+
Hiring companies
810+
Fresh sample
60% new in 30d
Salary visibility
51% show pay
Companies appearing in this market
ARKA GroupAT&TDeepSigEsriGliaCell TechnologiesJovian ConceptsCooleyCydecor
Work location mix in visible results
Onsite: 41Hybrid: 25Remote: 15