Senior Python Developer Jobs in Littlestown, PA, US

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Senior‑Level Python Developer (Python, C++)

Annapolis Junction, Maryland, United States

$155k-$175k/yr OnsiteFull Time

IDS International: Global training, logistics, and security for government agencies.

8+ YOEBachelor’s degree in computer science; 8+ years relevant experience; Python, C++, Spark; Jupyter Notebooks; JIRA, Confluence, Git/GitLab; knowledge of customer tools; active TS/SCI with Polygraph.

Python, C++, Spark, Jupyter Notebooks, JIRA, Confluence, Git/GitLab

2mo

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2mo

Python Developer

Woodlawn, Maryland, United States

$144k-$197k/yr OnsiteFull Time

Social Security Administration: Manages federal retirement, disability, and survivor social insurance.

1+ YOEDesign and develop large-scale Python applications with ML/LLM, data processing with NumPy/Pandas, performance analysis, collaboration, TDD, Git, SQL, security, agile practices, and cloud deployment.

Python, NumPy, Pandas, Git, Bitbucket, Visual Studio Code, PostgreSQL, MongoDB, SQL, Splunk, Dynatrace, AWS, Azure, Jenkins

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Python Developer

Fort Meade, Maryland, United States

OnsiteFull Time

Set of X: Provides specialized engineering services for U.S. national security missions.

7+ YOEBachelor's degree in Computer Science or related; 7+ years SWE experience; TS/SCI clearance with polygraph; strong Python; NiFi or Elasticsearch a plus.

Python, NiFi, Elasticsearch

2mo

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2mo

Senior Python Software Engineer

Linthicum Heights, Maryland, United States

$170k-$260k/yr OnsiteFull Time

GliaCell Technologies: Providing software and systems engineering for the intelligence community.

6+ YOEActive TS/SCI with Polygraph clearance; U.S. citizenship; 6+ years software engineering with MS in CS (or 8+ years with BS), or 10+ years with AA, or 12+ years with high school diploma; strong communication and independent work skills.

Python, Docker, Django, Flask, MongoDB, MariaDB, REST, JSON, XML, Jira, Confluence, Git, AWS

1mo

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1mo

Senior Software Engineer (Python)

Columbia, Maryland, United States

$170k-$240k/yr OnsiteFull Time

Visionist: Provides software engineering and data analytics for national security.

12+ YOESenior software engineer with 12+ years exp, Python expert, production apps, AI concepts, Kafka, Elasticsearch; TS/SCI with polygraph.

Python, Kafka, Elasticsearch, PydanticAI, LangGraph

2mo

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2mo

CNO Python Software Engineer

Hanover, Maryland, United States

OnsiteFull Time

ManTech: Delivers technology and cybersecurity solutions to national security agencies.

7+ YOETS/SCI w/ Poly required; 7+ years of programming with BS or 11+ years with HS; Python, JSON/YAML, OOP, version control; experience in CNO context and testing.

Python, JSON, YAML, Git, Subversion, Confluence, Jira

1mo

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1mo

Python Software Engineer (TS/SCI with Polygraph)

Annapolis Junction, Maryland, United States

$150k-$200k/yr OnsiteFull Time

Red Alpha: Provides software engineering and data science for defense missions.

7+ YOE7+ years software engineering; BS in CS or related field; Linux CLI; Bash; Python; Rust or willingness to learn; NoSQL (MongoDB); Docker; Kubernetes; Helm; RabbitMQ; GitLab CI; Ansible; Git; TS/SCI with polygraph

Linux, Bash, Python, Rust, MongoDB, Docker, containerd, Kubernetes, Helm, RabbitMQ, GitLab CI, Ansible, Git, PostgreSQL, Jira, Confluence

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Senior Software Engineer, Python

Linthicum, Maryland, United States

OnsiteFull Time

CyberMaxx: Provides managed detection and response cybersecurity services to organizations.

5+ YOE5+ years Python3, 2+ years MySQL, REST APIs, data science basics; Django and ML packages a plus.

Python, MySQL, RESTful APIs, Django, Keras, TensorFlow

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Senior Software Developer

Richmond or Baltimore or Nashville or Mechanicsburg or Raleigh

$105k-$145k/yr HybridFull Time

GFT: Global firm providing engineering and infrastructure construction services.

5+ YOESenior software developer with 5+ years of experience in full-stack design and geospatial applications.

SQL, C#, Java, Python, HTML, CSS, JavaScript, ASP.Net Core, Angular, React, Vue.js, Esri software

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Senior Full Stack Developer

Baltimore, Maryland, United States

$133k-$189k/yr RemoteFull Time

Index Analytics: Delivers data strategy and IT solutions to federal health agencies.

5+ YOESenior full stack developer with 5+ years of experience, strong JS/Python, React/Node.js, AWS, Git, and government project experience.

React, Next.js, TypeScript, Python, AWS, Redis, DynamoDB, Lambda, S3, API Gateway, Git, Jenkins, Snowflake, PostgreSQL, Plotly, D3, Jest, React Testing Library, Jira, Confluence

2mo

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2mo

Senior Software Engineer

Annapolis Junction or Columbia

OnsiteFull Time

Freedom Technology Solutions Group: Technical consulting and engineering for the national security community.

7+ YOESenior software engineer with 7+ years SWE experience; BS in CS required; strong Java/Python, CI/CD, and security clearance with polygraph; experience with Agile; ability to design, develop, and deploy software.

Java, Python, Git, Shell, Maven, JavaScript, HTML, CSS, JUnit, IDE, Spring, Jenkins, Hibernate, MySQL, Web Services, Google Web Toolkit, Vaadin, Docker, Kubernetes, OpenShift, GitLab CI, SonarQube

2mo

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2mo

Senior Software Developer

Hanover, Maryland, United States

OnsiteFull Time

VTG: Provides engineering and digital modernization for defense and national security.

20+ YOETwenty years of software development; multi-language proficiency (Java, Python, Rust, C++, Golang); Top Secret/SCI with Poly clearance.

Java, Python, Rust, C++, Golang, Docker, Kubernetes

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Senior Software Engineer

Owings Mills, Maryland, United States

$121k-$206k/yr HybridFull Time

T. Rowe PriceNASDAQ: TROW: Provides global investment management and retirement planning services.

5+ YOESenior software engineer with AWS, Amazon Connect, Java/Python, CI/CD, Docker, OAuth2, and distributed systems.

Java, Python, Amazon Connect, AWS, Lambda, Lex, DynamoDB, S3, Git, Docker, OAuth2, OIDC, JWT, ADFS, Terraform

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Senior Software Developer

Rockville or Tysons Corner

$113k-$188k/yr HybridFull Time

Guidehouse: Provides management and technology consulting services to diverse organizations.

6+ YOEMinimum 6 years full-stack development (Python and React); 3+ years databases; Docker; AWS; REST/JSON; CI/CD; mentoring.

React, TypeScript/JavaScript, Python, Docker, AWS, GitHub Actions

2mo

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2mo

Senior CNO Developer (Onsite)

Annapolis Junction, Maryland, United States

OnsiteFull Time

Nightwing: Provides cybersecurity and intelligence solutions for government agencies.

6+ YOE5+ MgmtSenior CNO developer with extensive programming and team leadership experience, TS/SCI clearance preferred, onsite in MD.

Python, C, C++, Java, Perl, Assembly, Make, PowerShell, Bash

1mo

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1mo

Senior Software Engineer

Waltham or Lexington or North Bethesda

$119k-$155k/yr HybridFull Time

XometryNASDAQ: XMTR: Operates an AI-powered marketplace for custom manufacturing and prototyping.

6+ YOE6+ years in software development; full-stack experience; Python backend; React/Typescript; AWS; SQL and MongoDB; Docker/Kubernetes; strong debugging and testing.

Python, React, Typescript, HTML, CSS, AWS, SQL, MongoDB, Docker, Kubernetes

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Full Stack Developer, Senior

Fort Meade, Maryland, United States

$113k-$257k/yr RemoteFull Time

Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.

14+ YOESenior full stack developer with 14+ years Linux software experience or 18+ years without a degree; TS/SCI with poly; Python/Java/JavaScript; data visualization and modeling; relational DBs (MySQL/PostgreSQL); lead small teams; agile; Bachelor's in CS.

Python, Java, JavaScript, MySQL, PostgreSQL, Linux, Data visualization

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Full Stack Developer, Senior

Fort Meade, Maryland, United States

$113k-$257k/yr OnsiteFull Time

Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients

14+ YOESenior full-stack developer with experience in Python/Java/JavaScript, data visualization, data modeling, web applications, and leading small cross-functional teams; TS/SCI with polygraph; Bachelor's in Computer Science with 14+ years (or 18+ years in lieu of degree) in Linux environment.

Python, Java, JavaScript, MySQL, PostgreSQL, Linux

2mo

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2mo

Senior Software Engineer

Annapolis Junction, Maryland, United States

OnsiteFull Time

ClearEdge: Provides software engineering and data analytics to the intelligence community.

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

1mo

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1mo

DevOps Engineer Senior Staff

Fort Meade, Maryland, United States

$151k-$266k/yr OnsiteFull Time

Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.

20+ YOESenior DevOps engineer with Kubernetes, Python/C++, CI/CD, Linux, and security clearance TS/SCI with poly.

Kubernetes, Docker, Jenkins, GitLab CI/CD, Python, Bash, Go, YAML, JSON, Ansible, Helm, C++

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Senior Software Engineer/Architect

Laurel, Maryland, United States

$105k-$290k/yr OnsiteFull Time

Johns Hopkins University Applied Physics Laboratory: Conducts research and engineering for national security and space.

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

1mo

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1mo

Senior Software Engineer

Fort Meade, Maryland, United States

OnsiteFull Time

Hoplite Solutions: Provides cybersecurity and intelligence services for national security missions.

11+ YOESenior software engineer with strong experience in Jupyter Notebooks, Java MapReduce, Python PySpark; ML/analytics focus; experience with Jira/Confluence/GitLab; TS/SCI with Polygraph clearance; Bachelor's +11 years or equivalent.

Jupyter, Java MapReduce, Python PySpark, Confluence, Jira, GitLab

2mo

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2mo

Senior Software Test Engineer (onsite)

New Freedom, Pennsylvania, United States

$80k-$110k/yr OnsiteFull Time

Johnson ControlsNYSE: JCI: Provides building products, HVAC systems, and fire safety solutions.

5+ YOESenior Software Test Engineer with 5+ years in software development and testing; 4+ years manual testing (preferably automated); proficient in C/C++, Python; hardware testing with oscilloscopes, logic analyzers, and JTAG; experience leading testing for embedded systems; US citizen or permanent resident.

C, C++, Python, Oscilloscopes, Logic Analyzers, JTAG

3mo

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3mo

Senior Data Engineer

Baltimore, Maryland, United States

$125k-$150k/yr HybridFull Time

Association of Universities for Research in Astronomy: Manages astronomical observatories and space telescope science centers

8+ YOE8+ years in Linux, data engineering, PostgreSQL, data pipelines; Python; Kubernetes; Apache Airflow; cloud and on-prem; BS/MS in CS/IT.

PostgreSQL, Apache Airflow, Kubernetes, Python, Linux

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Senior Systems Engineer

Colorado Springs or Albuquerque or Laurel

$125k-$150k/yr RemoteFull Time

Auria: Engineering and software solutions for space and defense missions.

2+ YOETop Secret/SCI eligible, U.S. citizenship, BS in Engineering, 2+ years in aerospace software, Python and C++, experience in flight software and satellite missions.

Python, C++, Docker, Kubernetes, ROS, NATS, grpc, Ansys STK

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Senior GenAI Backend Platform Developer

Rockville or Jersey City or Denver or San Francisco or New York

HybridFull Time

FINRA: Regulates brokerage firms and exchange markets in the United States.

5+ YOESenior GenAI backend developer with 5+ years of experience in cloud-native systems, AWS, CI/CD, and secure software practices.

AWS Bedrock, AWS S3, AWS Fargate, AWS Lambda, AWS Step Functions, Jenkins, Git, Docker, Python, FastAPI

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Senior Software Engineer

Columbia, Maryland, United States

$190k-$240k/yr OnsiteFull Time

Belay Technologies: Provides specialized technology and engineering services to the DoD.

12+ YOETS/SCI with polygraph; 12+ years experience or 4 additional years in lieu of a degree; strong Python/JavaScript full-stack, data querying, Linux, Git, and on-site collaboration.

Python, JavaScript, Linux, Git, Docker, Kubernetes

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Senior Software Engineer

Jessup, Maryland, United States

$185k-$215k/yr OnsiteFull Time

AeroVironmentNASDAQ: AVAV: Designs and manufactures unmanned aircraft and tactical missile systems.

14+ YOEBachelor’s degree; 14+ years software engineering/architecture; Java, Python, JavaScript; AWS (EC2, S3); REST APIs; Docker/Kubernetes; OAuth2/OpenID Connect; PKI; Agile; TS/SCI with Poly.

Java, Python, JavaScript, ReactJS, AWS, EC2, S3, Docker, Kubernetes, OAuth2, OpenID Connect, PKI, REST, Jenkins, GitLab CI, GitHub Actions, Maven, TensorFlow, PyTorch, Neo4j, Amazon Neptune, Keycloak

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Senior Software Engineer

Aberdeen, Maryland, United States

$140k-$225k/yr HybridFull Time

LufCo: Provides specialized engineering and analytic services for defense missions.

7+ YOE7+ years software engineering experience; BS in CS/CE/EE; strong C/C++/Java/Python; CUDA; Docker; REST APIs; TS/SCI clearance; willing to travel; hybrid in Aberdeen, MD.

C, C++, Java, Python, Shell Scripting, Google Protocol Buffers, HTTP REST APIs, Docker, RPMs, CUDA

1mo

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1mo

Senior Full Stack Developer (React)

New Hyde Park or Moline or Hartford or Framingham or West Palm Beach or Norcross or Chicago or Milwaukee or Baltimore or Piscataway or United States

$125k-$150k/yr RemoteFull Time

Parts Authority: Distributes automotive and truck replacement parts to the aftermarket industry.

5+ YOE5+ years professional experience building production web apps; 2+ years in senior/lead roles; strong Python and React/TypeScript; AI/ML integration; Kafka/event-driven architectures; PostgreSQL/Redis; Kubernetes/DevOps; AS400 integration experience preferred

Python, FastAPI, SQLAlchemy, Pydantic, React, TypeScript, Tailwind, Redis, PostgreSQL, Kafka, Databricks, MLflow, Airflow, Docker, Kubernetes, GitHub Actions, ODBC, Data Queues, RBAC, OAuth

2mo

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2mo

355 - Senior Software Engineer

Fort Meade, Maryland, United States

$191k-$214k/yr OnsiteFull Time

ARSIEM: Provides cybersecurity and technical IT solutions to government agencies.

11+ YOESenior software engineer with strong experience in Jupyter Notebooks, Java MapReduce, Python PySpark; ML/AI, big data; agile tooling; Bachelor’s + 11 years of experience or equivalent; TS/SCI with polygraph and U.S. citizenship.

Jupyter Notebooks, Java MapReduce, Python PySpark, Jira, Confluence, Gitlab

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Senior Software Engineer

Columbia, Maryland, United States

$190k-$200k/yr OnsiteFull Time

Red Arch Solutions: Provides IT engineering solutions for the intelligence community.

10+ YOEActive TS clearance; 10+ years IT/DevSecOps with AWS; BS in CS/IT/Engineering or equivalent; experience in full stack development and ML pipeline deployment.

Python, Go, Java, JavaScript, TypeScript, React, AngularJS, NextJS, AWS, DevSecOps

2mo

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2mo

Senior Back End Developer (TS/SCI)

San Antonio or Fort Meade

OnsiteFull Time

Def-Logix: Provides cybersecurity and software engineering solutions for government agencies.

10+ YOESenior backend developer with TS/SCI clearance; 10+ yrs software development; 5+ yrs backend web development; Python & PostgreSQL; REST APIs; cloud (AWS/Kubernetes); DoD/DevSecOps experience.

Python, PostgreSQL, REST API, AWS, Kubernetes, RedHat Linux, Jira, Maven, BASH, Spring, Ansible, JUnit5, Nexus Repository

2mo

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2mo

Senior Software Engineer 3

Fort Meade, Maryland, United States

$190k-$230k/yr OnsiteFull Time

T-Rex Solutions: Modernizes IT infrastructure and cybersecurity for federal government agencies.

20+ YOEActive TS/SCI with FSP; Bachelor's plus extensive experience; virtual environment, Python scripting, Java/Kotlin, Spring/Kubernetes, REST; familiarity with Atlassian, Git, IDEs.

Python, Java, Kotlin, Spring, Spring Boot, Kubernetes, REST, Git, IntelliJ, Eclipse IDE, Atlassian tools

1mo

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1mo

Senior Software Engineer – Biomedical Informatics

Rockville, Maryland, United States

$140k-$160k/yr OnsiteFull Time

Axle Informatics: Provides bioscience and IT solutions for biomedical research.

5+ YOE5+ years software development; Python; ML models; AWS; PostgreSQL; Docker; Linux; Git; CI/CD; independent cross-team delivery.

Python, AWS, Docker, PostgreSQL, Git, Linux, CI/CD, OMOP, vector databases

2mo

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2mo

Software Engineer, Senior

Fort Meade, Maryland, United States

$230k-$275k/yr OnsiteFull Time

Navstar: Provides IT and cybersecurity solutions to the intelligence community.

11+ YOEActive TS/SCI clearance with polygraph; end-to-end capability development; enterprise Java development; Bachelor's degree with 11+ years of relevant experience; proficient in JAVA, Python, Rust, C++, TypeScript, Visual Studio, Gitlab.

Java, Python, Rust, C++, TypeScript, Visual Studio, GitLab

1mo

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1mo

Senior Software Engineer - Backend

Annapolis Junction, Maryland, United States

$200k-$250k/yr HybridFull Time

Boeing Intelligence & AnalyticsNYSE: BA: Delivers intelligence, analytics, and cyber solutions for national security.

20+ YOESenior backend software engineer with leadership, design, and coding responsibilities; TS/SCI with polygraph preferred; 20+ years of experience; Bachelor's degree.

AWS, Docker, Kubernetes, HAProxy, Nginx, Elastic Stack, Git, Java, C++, Python, Postgres, SQL, Jira, Confluence

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Senior QA Automation Engineer

Bethesda or Rockville

$120k-$130k/yr HybridFull Time

A-TEK: Provides digital transformation and scientific solutions to federal agencies.

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)

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Senior Automation Engineer

Laurel, Maryland, United States

$131k-$164k/yr HybridFull Time

Tower Federal Credit Union: Provides member-owned banking and personal financial services.

5+ YOESenior automation engineer with 5-8 years in automation, test automation, DevOps; strong programming in Python/Java/C#; experience with Selenium/Cypress/Playwright; CI/CD; containers; cloud and infra automation.

Python, Java, C#, JavaScript, Selenium, Cypress, Playwright, Robot Framework, Azure DevOps, Jenkins, GitLab CI, GitHub Actions, Docker, Kubernetes, AWS, Azure, GCP, Terraform, Ansible, CloudFormation, JMeter, LoadRunner