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Senior Python Developer Jobs in Winchester, VA, US

610+ senior python developer jobs from 170+ companies hiring in Winchester, VA, US.

All jobs in Winchester, VA, USSenior Python Developer Jobs in United States
Nearby:Front Royal·Martinsburg·Leesburg·Ashburn·Berryville·Hagerstown·Frederick·South Riding·Purcellville·Sterling·Strasburg·Ballenger Creek·Centreville·Linton Hall·Germantown·Reston·Oak Hill·Herndon·Chantilly
612 jobs- Winchester • 50 miles
2w
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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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2mo
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Senior Software Developer
Reston, Virginia, United States
$146k-$228k/yr HybridFull Time
Noblis
Noblis: Provides technical and scientific solutions to federal government agencies.
8+ YOEBachelor's Degree and 8+ years software development; expert Python and C; Linux/Windows; PostgreSQL; software architecture; system-level programming; TS/SCI clearance with eligibility.
Python, C, PostgreSQL, Linux, Windows, Git, Docker, Kubernetes, REST, Microservices, CI/CD, DevOps
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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
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2w
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Senior Software Engineer
Warrenton or State College or Fort Eisenhower or Centennial
OnsiteFull Time
Altamira Technologies
Altamira TechnologiesNYSE: PSN: Provides data analytics and engineering for national security missions.
Strong Java and JavaScript/TypeScript skills; full-stack development; experience with Java, Python, JavaScript, Angular, React, ElasticSearch; BS in CS/CE/EE.
Java, Python, JavaScript, TypeScript, Angular, React, ElasticSearch, Docker, Kubernetes, Redis, REST, NoSQL, SQL, Xmidas
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1mo
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Web Application Developer Senior
Winchester, Virginia, United States
OnsiteFull Time
ECS
ECSNYSE: ASGN: Provides advanced technology and engineering services to government agencies.
2+ YOEBachelor's degree; TS/SCI clearance; 2+ years in AWS/C#/Java/Python; web app development.
AWS, C#, Java, Python
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1d
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Software Developer, Senior
Herndon, Virginia, United States
$133k-$226k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Designs and manufactures advanced defense and aerospace systems.
6+ YOEMinimum 6 years software development experience; Bachelor’s degree in CS/Info Security or related field (or equivalent); Proficiency with .NET, Web, Python, PowerShell; Cloud experience (AWS/Azure); Experience with GitHub/Jira/Jenkins/Confluence; knowledge of STS/DataHound; SDLC familiarity; strong documentation skills.
.NET, C#, WPF/XAML, C++, ASP.NET MVC Web API, HTML/CSS, Python, PowerShell, IIS, AWS, Azure, GitHub, Jira, Jenkins, Confluence, Secure Token Service (STS), DataHound, Microsoft PowerBI
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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
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16h
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Senior Software Engineer
Reston or Lexington
$97k-$165k/yr HybridFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
5+ YOEBachelor's degree in Computer Science or Software Engineering; 5+ years software development; active Secret clearance or ability to obtain; strong C/C++ and Python; Linux experience; full software lifecycle; security-focused.
C/C++, Python, Linux, SVN, Git, Make, CMake, TCP/IP, UDP, SSH, SFTP
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2mo
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Senior Software Engineer
Reston or Vienna
HybridFull Time
NT Concepts
NT Concepts: Delivers AI and data solutions for national security missions.
6+ YOE6+ years full-stack development; Python, Django, Angular, TypeScript; containerization (Fargate, OpenShift, Kubernetes); API design; DevOps; databases; AI/ML integration; active Secret clearance; TS/SCI preferred.
Python, Django, Angular, TypeScript, Kubernetes, OpenShift, Fargate, PostgreSQL, MySQL, MongoDB, Git, APIs
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2mo
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Senior Software Engineer/ Elastic Engineer
Dulles, Virginia, United States
OnsiteFull Time
Node.Digital
Node.Digital: Provides digital automation and AI solutions for government and commercial enterprises.
6+ YOEU.S. citizenship; active Secret clearance with ability to obtain TS/SCI; DHS suitability; 6+ years software development; 2+ years Elastic Cloud on Kubernetes admin; 2+ years Elasticsearch DSL; 5+ years Kubernetes; ELK stack knowledge; scripting (Python, JavaScript, Bash).
Elasticsearch, Kibana, Logstash, Beats, Elastic Cloud on Kubernetes, Kubernetes, Python, Groovy, Bash, ELK
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3mo
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Cloud Developer - Senior
Chantilly, Virginia, United States
OnsiteFull Time
Sentar
Sentar: Provides cybersecurity and intelligence solutions for national security missions.
8+ YOESenior Cloud Developer with 8+ years software development; 3+ years cloud, TS/SCI eligibility, BS in CS/cloud computing preferred.
AWS GovCloud, Terraform, Docker, Kubernetes, Lambda, S3, RDS, DynamoDB, SAFe, DevSecOps, Python, C#
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2w
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Senior Software Engineer
Chantilly, Virginia, United States
$170k-$205k/yr OnsiteFull Time
Markon
Markon: Delivers management and technical consulting services to federal agencies.
13+ YOETS/SCI with Full Scope Poly, BS with 13+ years, AWS, Git/Jenkins/Rundeck, Python/Java/Node.js, REST APIs.
Python, Java, Node.js, Elasticsearch, AWS, Git, Jenkins, Rundeck, CloudFormation, REST APIs, PM2
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2mo
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Senior Software Engineer
Herndon, Virginia, United States
RemoteFull Time
iDirect Government
iDirect Government: Provides secure satellite-based IP communication solutions for government organizations.
6+ YOESenior software engineer with 6+ years in C/C++, Linux, REST/GraphQL, and modern web tech; strong problem solving and collaboration.
C++, Go, GraphQL, Vue, Node.js, WebSockets, REST, Docker, Kubernetes, PostgreSQL, MySQL, MariaDB, Python, Perl, Lua, GCC, cmake, bash, Jira, Git
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3mo
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Full Stack Developer, Senior
Chantilly, Virginia, United States
$113k-$238k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and professional services to government agencies.
7+ YOESenior full stack developer with TS/SCI with polygraph, 7+ years in software engineering, experience with OOP (Java/Ruby), Linux, AWS, Python, REST, relational databases, and Agile.
AWS, Linux, Java, Ruby, Python, Git, MySQL, PostgreSQL, Oracle, REST, Apache HTTPD, Solr, Rails, Node.js, React, Angular, Vue.js, Jenkins, CI/CD
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1mo
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Full Stack Developer, Senior
Chantilly, Virginia, United States
$87k-$198k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
5+ YOE5+ years full-stack development, REST APIs in Python/Java, React UI, SQL, AI/ML, TS/SCI clearance; Bachelor's degree or 8+ years experience; ability to obtain Security+ CE/SSCP/CCNA-Security/GSEC within 6 months.
React, Python, Java, SQL
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16h
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Senior Software Engineer
Reston or Lexington
$97k-$165k/yr HybridFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA.: Produces advanced defense, aerospace, and information security systems.
5+ YOEBachelor’s in CS/Software Eng or related; 5+ years software dev; active Secret clearance; strong C/C++, Python; Linux; SDLC; collaboration.
C++, Python, Linux, SVN, Git, Make, CMake, TCP/IP
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2mo
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Senior Software Engineer
Chantilly, Virginia, United States
$146k-$234k/yr OnsiteFull Time
Peraton
Peraton: National security and mission-critical government technology services provider.
12+ YOEActive TS/SCI with poly; 12+ yrs software dev with BS/BA or 10+ yrs with MS/MA; 4+ yrs Java/Python; Linux; AWS; Agile.
Java, Python, Linux, AWS, S3, EC2, NiFi, Git, Jenkins, Puppet, Chef, Ansible, Terraform, SQS, Kafka
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3w
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Senior Prototyping Engineer
Austin or Reston or United States
HybridFull Time
Seekr
Seekr: Transparent AI platform for enterprise and government decision-making.
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
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1mo
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Senior Software Engineer, Platform
Chantilly or Herndon or Washington
HybridFull Time
Privateer
Privateer: Provides satellite data sharing and geospatial intelligence analytics platforms.
Strong Python, microservices, gRPC, PostgreSQL/DuckDB, Docker/Kubernetes, message brokers, and AWS experience.
Python, gRPC, Protocol Buffers, PostgreSQL, DuckDB, RabbitMQ, Docker, Kubernetes, AWS, HTTP API, Event-driven architectures
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2w
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Applications Developer (Full Stack Developer - Senior)
Herndon, Virginia, United States
OnsiteFull Time
Ardent Principles
Ardent Principles: Provides specialized technology and program management services to government agencies.
4+ YOESenior-level developer with active TS/SCI with Full Scope Polygraph; 4+ years web app experience; strong Python/Java/JS/C# OO skills; cloud and Linux experience;Bachelor's degree or 11 years experience without degree.
Angular, React, JavaScript, Python, Java, C#, Linux, AWS, Azure, Oracle Cloud, Docker, Podman, Jira, Confluence, GitHub
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1w
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Software Engineer, Senior
McLean or Chantilly or Beavercreek or Huntsville or Redstone Arsenal or Annapolis Junction or El Segundo or Rome or Aurora or Colorado Springs or Lexington
$87k-$198k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
5+ YOE7+ years in software engineering; Rust, C, C++, or Python; full-stack app experience; Kubernetes; CI/CD; AI-assisted tools; secure-by-design; secret clearance; BS in CS/Engineering (5+ years) or 7+ years without degree.
Rust, C, C++, Python, Kubernetes, CI/CD, SonarQube, Clippy, cargo-deny, cargo-audit, PyO3
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1mo
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Senior Software Engineer (Big Data)
Herndon, Virginia, United States
OnsiteFull Time
KDA Consulting
KDA Consulting: Provides IT engineering and cloud services for intelligence missions.
TS/SCI clearance with polygraph preferred; BS in CS/Engineering or related field; strong full stack development; big data tech (Hadoop, Spark, Kafka); Java/Python/C#; APIs and microservices; strong problem-solving; able to work independently (IC)
Java, Python, C#, Hadoop, Apache Spark, Kafka, APIs, Microservices, REST
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1w
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Senior Software Engineer - APIs
Ashburn, Virginia, United States
$120k-$145k/yr RemoteFull Time
Unacast
Unacast: Provides human mobility analytics and global location intelligence solutions.
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
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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
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1w
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Senior Engineer-5
Bethesda, Maryland, United States
$105k-$215k/yr HybridFull Time
GEICO
GEICO: Provides vehicle and property insurance services to consumers.
4+ YOE4+ years software development; strong experience with C#, Java, TypeScript, JavaScript, Python, or Golang; microservices architecture; cloud (AWS, GCP, Azure); DevOps; security; CI/CD; containers (Docker, Kubernetes).
Python, C#, TypeScript, JavaScript, Java, Golang, Docker, Kubernetes, Terraform, Azure, AWS, GCP
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1mo
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Senior Software Developer - Clearance Required
Reston or Joint Base Anacostia-Bolling
HybridMultiple Commitments Available
Cydecor
Cydecor: Providing technology solutions and mission support to defense agencies.
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
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1w
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Senior Software Engineer (Command & Control)
Arlington or Santa Barbara or Reston
$155k-$185k/yr OnsiteFull Time
Umbra
Umbra: Operates high-resolution synthetic aperture radar imaging satellites.
5+ YOE5-8+ years backend systems, Python, REST APIs, distributed/microservices, cloud (AWS), and mission control/C3 experience.
Python, AWS, PostgreSQL, REST, Microservices, Docker, Kubernetes, Monitoring/Observability
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1mo
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Senior Software Development Engineer - US Federal
McLean or Reston
$164k-$246k/yr OnsiteFull Time
Workday
WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.
8+ YOESecurity clearance TS/SCI w/ CI Poly; 8+ years in UML/Web app/SaaS; OO languages Java/Python/C#/C++; 8+ years designing/developing business apps; agile experience; JSON/REST/GraphQL; design patterns.
JSON, REST, GraphQL, UML, Java, Python, C++, C#
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1mo
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Senior Full Stack Developer - TS/SCI with Polygraph
Chantilly, Virginia, United States
$138k-$186k/yr OnsiteFull Time
GDIT
GDITNYSE: GD: Delivers IT systems and mission services to government agencies.
8+ YOE8+ years software development experience; TS/SCI with Poly; Java Spring Boot; TypeScript React; Linux; PostgreSQL; Python; Docker; security clearance.
Java, Spring Boot, TypeScript, React, Redux, Hbase, Solr, JanusGraph, NiFi, PostgreSQL, Ansible, Linux (RHEL), Python, Multithreading, Docker, Elasticsearch, RabbitMQ, Keycloak, NetOwl
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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
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1w
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Senior Software Engineer - CTJ - Poly
Redmond or Reston or Atlanta or United States
$120k-$235k/yr OnsiteFull Time
Microsoft
Microsoft: Provides software, cloud computing, and hardware technology products.
4+ YOEBachelor's degree in CS or related field and 4+ years of engineering experience with coding in C/C++/C#/Java/JavaScript/Python; must meet security screenings.
C, C++, C#, Java, JavaScript, Python, Azure, Linux, Git
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2w
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Senior Associate Software Engineer
Manassas, Virginia, United States
OnsiteFull Time
VTG
VTG: Provides force modernization and digital transformation for defense agencies.
2+ YOEBachelor's in CS/CE, 2+ years GPU/parallel processing, proficient in Python, NumPy, CuPy/Numba, multiprocessing; strong communication; ability to obtain Secret clearance.
Python, CuPy, Numba, NumPy, multiprocessing, C++, OpenMP, MPI, pybind11, Cython, ctypes, Kubernetes, Docker, Podman, KVM, Helm, shell scripting
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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
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2w
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Software Engineer (lead Python programming) – Level 4
Fairfax, Virginia, United States
$142k-$213k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
8+ YOESenior software engineer with 3+ years Python, strong OO design, leadership experience, TS/SCI clearance preferred.
Python, Gitlab, Containers, DevOps
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1mo
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Senior Software Systems Engineer, Product Owner
Chantilly or Seal Beach
OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures commercial aircraft, defense systems, and satellites.
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
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1mo
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Senior Firmware Engineer
Herndon, Virginia, United States
OnsiteFull Time
Fibertek, Inc.
Fibertek, Inc.: Designs and manufactures laser and electro-optic aerospace systems.
7+ YOE7+ years experience; BS/MS in EE; FPGA/VHDL/SystemVerilog; DSP, LIDAR; FPGA tooling; GitHub/CI/CD; hardware integration.
VHDL, SystemVerilog, Xilinx, Microchip, Lattice, FPGA tools, GitHub, CI/CD, SPI, I2C, UART, LVDS, GTY/GTM, JESD204B/C, Ethernet, SpaceWire, DDR3/4, QDR, FRAM, Python
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1w
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Senior Software Engineer - DevOps / Infrastructure (Onsite)
Sterling, Virginia, United States
$96k-$182k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOERequires STEM degree and 5+ years experience; active U.S. government security clearance; CI/CD expertise; proven experience with GitLab/Jira/Confluence; automation tools (Ansible, Terraform, Puppet); scripting (Python, Bash, PowerShell) and virtualization (VMware, Proxmox).
GitLab, Jira, Confluence, Coverity, Nexus, Artifactory, Splunk, Ansible, Terraform, Puppet, Python, Bash, PowerShell, VMware, Proxmox, Kubernetes, Docker, OpenShift, OpenStack, SQL, NoSQL, MongoDB, PostgreSQL, MonetDB, JSON, XML, YAML
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1mo
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Senior Cyber Test Engineer (Onsite)
Sterling, Virginia, United States
OnsiteFull Time
Nightwing
Nightwing: Provides advanced cyber and intelligence solutions for national security.
3+ YOETS/SCI with CI Poly clearance; 3 years test engineering; 3 years offensive cyber operations; 3 years Python/Bash scripting; 3 years Linux/Unix; networking knowledge; strong communication and collaboration.
Python, Bash, Linux, Docker, Networking
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1w
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RF Software Engineer, Senior - 1647
Reston, Virginia, United States
RemoteFull Time
Global InfoTek
Global InfoTek: Develops advanced cybersecurity software and systems for defense agencies.
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
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6d
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Senior Data Scientist/Engineer
Chantilly, Virginia, United States
OnsiteFull Time
Agile Defense
Agile Defense: Provides IT modernization and cybersecurity for federal government agencies.
4+ YOESenior data scientist/engineer with 4–8 years of experience, strong Python and NLP skills, experience with generative AI, data engineering, and security-cleared environment.
Python, Pandas, scikit-learn, PyTorch, TensorFlow, Natural Language Processing, NLP, Entity extraction, Generative AI, ETL, Docker, Kubernetes, Spark, Hadoop, Kafka, Plotly, D3.js
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HiringCafe market data

Senior Python 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
610+
Hiring companies
170+
Fresh sample
47% new in 30d
Salary visibility
52% show pay

Companies appearing in this market

BAE SystemsBooz Allen HamiltonECSGlobal InfoTekKDA ConsultingMicrosoftNightwingNoblis

Work location mix in visible results

Onsite: 84Hybrid: 24Remote: 8

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