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Python Software Developer Jobs in Winchester, VA, US

590+ python software developer jobs from 170+ companies hiring in Winchester, VA, US.

590 jobs- Winchester • 50 miles
2mo
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Software Tester
Chantilly, Virginia, United States
OnsiteFull Time
KBR
KBRNYSE: KBR: Provides engineering, technology, and mission-critical services globally.
8+ YOEActive TS/SCI with a polygraph; associate or bachelor in CS/cyber security/engineering/mathematics; 8 years of experience; automated test scripting in Python/Bash/Java/JavaScript; functional and regression testing; UNIX/Windows; JIRA; customer and stakeholder interaction.
Python, Bash, Java, JavaScript, Selenium, JIRA, Unix, Windows
2w
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Awesome Full Stack Software Engineer (2+ years - Senior Level)
Arlington or Reston
HybridFull Time
Black Cape
Black Cape: Provides mission software, AI, and data analytics for defense.
2+ YOE2+ years professional experience; proficient in at least one OO language; MVC framework experience; relational DB; Linux; HTTP/REST/HTML/CSS/JS.
Java, Python, C#, C++, Spring, Django, Flask, Rails, MySQL, PostgreSQL, SQLite, Linux, HTTP, REST, HTML, CSS, JavaScript, React, Angular, Vue.js, Bootstrap, Less, Elasticsearch, MongoDB
6d
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Senior Application Engineer
Vienna or Winchester or Pensacola
$115k-$180k/yr HybridFull Time
Navy Federal Credit Union
Navy Federal Credit Union: Offers banking and financial services to the military community.
5+ YOEBachelor’s degree in Computer Science, Information Systems, or related field; 5–7 years in application/software development; Azure cloud experience; proficient in SQL, Python, JavaScript; strong communication and problem-solving.
SQL, Python, JavaScript, HTML/CSS, Azure, Azure Compute, Azure Storage, Azure Data & Analytics, Git
3w
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Senior Full Stack Developer
Herndon, Virginia, United States
OnsiteFull Time
Karsun Solutions
Karsun Solutions: Provider of IT modernization and software development for government agencies.
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
1mo
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Modernization Engineer (Senior)
Manassas, Virginia, United States
OnsiteFull Time
Spear AI
Spear AI: Develops AI software and sensors for maritime defense operations.
Senior software engineer with Rust, C/C++, Docker/Kubernetes, Kafka/Redpanda, Terraform/Pulumi, Python; strong testing, linting, and CI/CD experience.
Rust, C/C++, Docker, Kubernetes, Kafka/Redpanda, Terraform, Pulumi, Python, GitHub Actions, Protobuf
2w
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AI Engineer
Reston, Virginia, United States
$75k-$170k/yr OnsiteFull Time
Amivero
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
10h
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Embedded Software Engineer (United States, Ashburn VA, US)
Ashburn, Virginia, United States
HybridFull Time
Codan
CodanAustralian Securities Exchange: CDA: Designs and manufactures communications and metal detection technology.
Bachelor's or Master's in EE/CE/CS; embedded Linux; digital hardware; leadership in distributed teams; C/C++/Python; networking; hardware/software debugging; cross-domain collaboration.
C/C++, Python, Embedded Linux, Kernel drivers, Device trees, Networking, CI/CD
1mo
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Software Tester / QA Engineer (Web & API Testing)
Chantilly, Virginia, United States
$160k-$190k/yr OnsiteFull Time
Falls Technology
Falls Technology: Provides secure software development and systems engineering services.
3+ YOE3+ years in software testing; strong web and REST API testing; API tools; test automation; JavaScript/Python/Java; Agile/Scrum.
Postman, Swagger, Cypress, Git, JavaScript, Python, Java, JSON
1w
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Knowledge Graph Engineer
Reston or Somerville
$140k-$170k/yr HybridFull Time
Babel Street
Babel Street: AI-powered identity intelligence and risk operations software solutions.
2+ YOE2–5 years software engineering; Python and at least one typed language; graph databases; SQL; cross‑team collaboration
Python, Java, Go, TypeScript, ArangoDB, Neo4j, TigerGraph, JanusGraph, NetworkX, SQL, BigQuery, Cloud Run, GCP
1w
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Quality Assurance Engineer
Leesburg, Virginia, United States
OnsiteFull Time
Anika Systems
Anika Systems: Provides technology solutions and consulting for federal agencies.
5+ YOEMid-level QA engineer with development, SQL, and Python expertise focusing on automation, data validation, and platform reliability.
Python, SQL, CI/CD, AWS, Apache Iceberg, XBRL
1mo
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Full Stack Developer - Tech Dev (TS/SCI Required)
Washington or Reston
$165k-$185k/yr OnsiteFull Time
Kentro
Kentro: Provides digital transformation and IT services to federal agencies.
7+ YOE7+ years software development; full stack; TS/SCI clearance; BS or AS with 10+ years exp; strong JS/TS, .NET/C#, Python; SQL/ORM; Git; Agile; able to work with government clients.
.NET, C#, Python, JavaScript, TypeScript, React
4w
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Lead Full Stack Developer
Arlington or Herndon
$171k-$257k/yr OnsiteFull Time
Two Six Technologies
Two Six Technologies: Develops cybersecurity and data systems for national security missions.
7+ YOELead full stack developer with 7+ years; TS clearance with SCI eligibility; strong Python/JavaScript; in-person in Arlington/Herndon; BS in Computer Science or related field.
Python, JavaScript, Linux, Kubernetes, Jenkins, GitLab, AWS, OpenStack, Ansible, Terraform, OpenTofu
5d
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Apache Spark Developer
Herndon or Springfield or St. Louis or Aurora
OnsiteFull Time
Absolute Business Solutions Corp
Absolute Business Solutions Corp: Provides technology and intelligence services to the US government.
5+ YOETS/SCI eligibility, Bachelor's degree or equivalent experience in data engineering or Spark development, strong Spark, Python, Scala, and distributed data systems experience.
Apache Spark, PySpark, Scala, Docker, Kubernetes, Git, Jenkins, Parquet, Delta Lake, S3
1mo
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Application Developer
Chantilly, Virginia, United States
OnsiteFull Time
J5 Consulting
J5 Consulting: Provides specialized cybersecurity and technical services to government and commercial clients.
2+ YOEExperience building secure Java web apps (Spring), Python, React; SQL/NoSQL; AWS; REST APIs; CI/CD; Git; DevOps; Elasticsearch/MongoDB; NiFi; ETL; MapReduce; HBase.
Java, Spring, Spring Boot, Spring Security, Python, JavaScript, TypeScript, React, PostgreSQL, MySQL, PL/SQL, AWS, Jenkins, Git, Elasticsearch, MongoDB, NiFi, ETL, MapReduce, HBase
2w
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GIS Developer Analyst (Key Personnel)
Washington or Albuquerque or Germantown or Denver
HybridFull Time
Data Systems Analysts
Data Systems Analysts: Provides IT and cybersecurity solutions for government agencies.
3+ YOEBachelor's degree in GIS/Geography/CS or related field; 3–5 years GIS development; Python/JavaScript/C#/Java; geospatial analysis; DOE Q clearance; emergency management experience preferred.
ArcGIS Pro, ArcGIS Online, Experience Builder, Survey123, Python, JavaScript, ArcPy, ArcGIS SDKs, C#, Java
1w
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Cyber Software Engineering Intern
Herndon, Virginia, United States
OnsiteInternship
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and builds aerospace and defense technology systems.
Enrolled in Computer Science/Engineering; experience in C/C++/Python; Linux; US citizenship; ability to obtain government clearance.
C, C++, Python, Linux
3w
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AI Developer
Fairfax, Virginia, United States
RemoteFull Time
Future Technologies
Future Technologies: Provides technical engineering and mission support for defense systems.
Hands-on AI/ML development, secure DoD environments, CI/CD, IaC, and LLM integration; US citizenship and potential Secret clearance.
Python, PyTorch, TensorFlow, NLP/LLMs, GitHub, GitLab, Jenkins, Terraform, AWS SageMaker, Bedrock GovCloud, OpenAI, Mabl, Applitools
2mo
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Sr. Web Application Developer #1703183
Chantilly, Virginia, United States
$121k-$135k/yr OnsiteFull Time
Network Designs, Inc.
Network Designs, Inc.: Provides IT, network, and cybersecurity solutions to government agencies.
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
2w
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Forward Deployed Engineer
Austin or Remote or Reston
HybridFull Time
Seekr
Seekr: Transparent AI platform for enterprise and government decision-making.
6+ YOE6+ years in software/data/ML; degree in CS/Engineering/Math/Physics/Data Science; hands-on with AI/ML and LLM frameworks; production systems; multi-cloud; containerization; Python/Java/TypeScript; travel 25–75%; client collaboration.
PyTorch, Hugging Face, LangChain, vLLM, Docker, Kubernetes, Python, Java, TypeScript
2w
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Forward Deployed Engineer
Reston, Virginia, United States
HybridFull Time
SZNS Solutions
SZNS Solutions: Provides specialized Google Cloud engineering and AI consulting services.
5+ YOEBachelor’s degree in CS/Engineering or equivalent; 5+ years in software engineering, cloud architecture, and deployments; strong cloud experience (GCP/AWS/Azure); full-stack proficiency (Python, TypeScript, Go, Rust, or Java); Docker/Kubernetes; US Citizen.
Kubernetes, GKE, Docker, Python, TypeScript, Go, Rust, Java, Google Cloud, AWS, Azure
2mo
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Senior Full-Stack Engineer
Culver City or Linthicum or Allen or Woodcliff Lake or Chicago or Orlando or Baton Rouge or Waltham or Phoenix or Harrisburg or West Valley City or Austin or Alpharetta or San Diego or Indianapolis or Lexington or Parma or Little Rock or Asheville or Birmingham or Chantilly or Washington or Brentwood or Plantation or Fort Collins or San Mateo or Schaumburg or Brooklyn
$140k-$180k/yr OnsiteFull Time
Motorola Solutions
Motorola SolutionsNYSE: MSI: Provides safety and security technology for government and enterprise.
7+ YOE7+ years in software development; Bachelor's degree in CS/Engineering; backend (Node.js) and frontend (React) experience; API integrations; cloud and database experience.
Node.js, HapiJS, Python, JavaScript, React, SQL, Serverless, Lambda, CloudFormation, Elastic Beanstalk, EC2, VPC, DynamoDB, RDS, G Suite, Microsoft Graph, Okta, OneLogin, Slack, Linux, Docker, Datadog, CloudWatch, MQTT, log/data pipelines
2w
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Junior Palantir / Maven Product Engineer
Herndon, Virginia, United States
OnsiteFull Time
NetCentrics
NetCentrics: Secures government infrastructure through cybersecurity and IT services.
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
1w
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Lead AI/ML Engineer
McLean or Chantilly
$175k-$225k/yr HybridFull Time
Raft
Raft: Builds AI and data platforms for U.S. national defense.
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
2mo
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Staff Engineer
Chantilly or Washington
HybridFull Time
History Factory
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
1mo
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Senior Full Stack Developer TS/SCI (or eligible)
Reston, Virginia, United States
OnsiteFull Time
Vibrint
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
1mo
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Full-Stack Developer
Reston or Chantilly
OnsiteFull Time
Dark Wolf Solutions
Dark Wolf Solutions: Provides cybersecurity and software development services to defense agencies.
5+ YOEFive years of experience in multiple modern programming languages and data stores; full-stack development; Java; JavaScript/Node.js; Elasticsearch; Vue.js; AWS or cloud experience.
Java, JavaScript, Node.js, Elasticsearch, Vue.js, AWS, Kubernetes, Docker, Gitlab CI/CD, Python
1mo
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Full Stack Developer
Chantilly, Virginia, United States
OnsiteFull Time
NS2 Mission
NS2 Mission: Delivers secure data management and analytics for national security.
5+ YOE5–7+ years in full stack development; proficient in Java/C#/C++; modern JavaScript (React); REST APIs; databases (SQL, MongoDB); cloud (AWS/Azure); DevOps; Agile/Scrum.
Java, C#, C++, React, HTML, CSS, SQL, MongoDB, Elasticsearch, Python, R, AWS, Azure, REST, API, IaC, DevOps, Terraform, Docker, Kubernetes
2w
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AI Engineer - AI+CryoET
Ashburn, Virginia, United States
OnsiteFull Time
Howard Hughes Medical Institute
Howard Hughes Medical Institute: Conducts biomedical research and funds scientific education and discovery.
3+ YOEExperience building AI/ML models for 3D imaging, especially cryoET or similar volumetric data; strong Python, PyTorch/JAX skills; collaboration across multidisciplinary teams.
Python, PyTorch, JAX, OpenMM
1mo
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Windows Cyber Tool Developer
Herndon, Virginia, United States
$150k-$250k/yr OnsiteFull Time
Mauck Research Group
Mauck Research Group: Develops offensive and defensive cyber tools for government clients.
Experience developing Windows security tools; BS in CS/Cybersecurity; TS/SCI clearance required.
C++, C#, Python
1w
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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
Cooley
Cooley: Provides legal counsel to technology and life sciences companies.
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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Web Developer (TS/SCI CI Poly)
Chantilly, Virginia, United States
OnsiteFull Time
Seamless Migration
Seamless Migration: Provides IT consulting and ServiceNow automation services for organizations.
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
4w
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Machine Learning Engineer
Centreville or Minneapolis
$102k-$144k/yr OnsiteFull Time
AeroVironment
AeroVironmentNASDAQ: AVAV: Designs and manufactures unmanned aircraft and tactical missile systems.
2+ YOEBS in Computer Vision/ML or related field; 2-5 years; C/C++, Matlab; TensorFlow/Keras; Python with scikit-learn/pandas; OpenCV; strong problem-solving and teamwork.
TensorFlow, Keras, Python, scikit-learn, pandas, OpenCV, Linux, C/C++, Matlab
1mo
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Missionforce - Associate Forward Deployed Engineer (FDE), Public Sector
Washington or Herndon
$96k-$177k/yr HybridFull Time
Salesforce
SalesforceNYSE: CRM: Provides cloud-based customer relationship management and business software.
3+ YOE3-7 years software engineering or systems integration; CS background; proficiency in JavaScript/Java/Python/Apex; hands-on delivery of production solutions; AI/LLM experience; data integration/APIs; secure environment experience; travel 25-50%; US citizenship with security clearance.
JavaScript, Java, Python, Apex, Salesforce Platform, Data Cloud, LLMs, AI/ML
1mo
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UX Engineer / Front-End Engineer – TAK (ATAK/WinTAK)
Chantilly, Virginia, United States
OnsiteFull Time
Eiden Systems Consulting
Eiden Systems Consulting: Delivers IT and engineering solutions for government agencies.
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
1mo
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DevOps Engineer
McLean or Chantilly
OnsiteFull Time
eDesign House
eDesign House: Provides secure software and cloud solutions for government agencies.
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
2mo
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Sr. AI Developer, GS (Chantilly, VA, US, 20151)
Chantilly, Virginia, United States
$116k-$189k/yr OnsiteFull Time
Day & Zimmermann
Day & Zimmermann: Provides engineering, defense manufacturing, and workforce solutions globally.
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
1mo
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Platform Engineer (Hybrid) - 27786 (Columbia, MD, Maryland, United States)
Columbia or San Antonio
$115k-$145k/yr HybridFull Time
HII
HIINYSE: HII: Builds naval ships and provides global defense technology solutions.
3+ YOECloud platform engineer with AWS, Python/Go, Linux; Kubernetes, IaC, hybrid work.
AWS, Kubernetes, Docker, Podman, Helm, Kustomize, Flux CD, Terraform, Python, Go, Linux, Shell
3w
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Full-Stack Developer Intern
Gaithersburg, Maryland, United States
OnsiteInternship
Diaconia
Diaconia: Provides secure IT modernization and engineering for government agencies.
0+ YOECurrently enrolled in a Bachelor's or Master's program in CS/Software Engineering or related field; GPA 3.2+, proficiency in JavaScript/TypeScript, front-end framework (React/Angular/Vue), RESTful APIs, relational DB, Git; strong problem-solving and communication.
JavaScript, TypeScript, React, Angular, Vue, Node.js, Python, Java, SQL, Git, Docker, Kubernetes, AWS, Azure, Google Cloud, GraphQL, REST
2w
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Software Engineering Associate Consultant (Graduating Dec 2025- Summer 2026)
Charlotte or Reston or Richmond
HybridFull Time
CapTech
CapTech: Provides technology and management consulting services to large enterprises.
0+ YOEEntry-level software engineering role; bachelor’s or accelerated master’s in CS/CE/IT with graduation Dec 2025 or Spring/Summer 2026; internship/ project experience; strong communication and analytical skills.
Java, NET, CSharp, Python, Go, Android, iOS, JavaScript, React, Angular, Node.js, AWS, GCP, Azure
1w
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Image & Computer Vision AI Engineer
Reston or Somerville
$140k-$170k/yr HybridFull Time
VIA
VIA: Provides secure decentralized identity and data privacy software solutions.
3+ YOE3+ years in computer vision, image processing, or applied ML; strong Python and CV/ML libraries; production pipelines; geolocation and multimodal search experience preferred.
Python, PyTorch, TensorFlow, OpenCV, CNNs, Transformers, Image Embedding, Geolocation Techniques

HiringCafe market data

Python Software Developer Jobs market signals in Winchester, 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
590+
Hiring companies
170+
Fresh sample
52% new in 30d
Salary visibility
35% show pay

Companies appearing in this market

AmiveroDark Wolf SolutionsKBRAeroVironmentAnika SystemsJ5 ConsultingKarsun SolutionsNetCentrics

Work location mix in visible results

Onsite: 36Hybrid: 15Remote: 3