967 senior python developer jobs at 208 companies in Hanover, PA

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
3mo
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Senior‑Level Python Developer (Python, C++)
Annapolis Junction, Maryland, United States
$155k-$175k/yr OnsiteFull Time
IDS International
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
1mo
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CNO Python Software Engineer
Hanover, Maryland, United States
$115k-$190k/yr OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
7+ YOERequires active TS/SCI with poly, Python development, JSON/YAML, version control, OO design, task automation; BS + 7+ years programming experience or HS + 11+ years.
Python, JSON, YAML, SQL, NoSQL, Subversion, GIT, Confluence, Jira, Crucible, TCP/IP, Scrum, TDD, Waterfall
1mo
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GenAI Python Systems Engineer –Senior Manager
Chicago or Raleigh or Charlotte or Cincinnati or Cleveland or Columbia or Columbus or Dallas or Baltimore or Richmond or Rosemont or Sacramento or Boston or St. Louis or Salt Lake City or San Antonio or San Diego or San Francisco or Silicon Valley or Seattle or Spartanburg or Albany or Stamford or Tampa or Atlanta or Toledo or Austin or Tulsa or Washington or Denver or Des Moines or Detroit or Buffalo or Florham Park or Kansas City or Las Vegas or Little Rock or Los Angeles or Louisville or Birmingham or Fayetteville or Miami or Milwaukee or Minneapolis or Nashville or New Orleans or New York or Oklahoma City or Philadelphia or Phoenix or Pittsburgh or Portland
$124k-$280k/yr HybridFull Time
PwC
PwC: Providing audit, tax, and management consulting services to businesses.
8+ YOESenior Manager level with 8+ years of experience; proficient in Python, SQL, FastAPI; cloud certifications a plus; willing to travel up to 80%; Bachelor's degree required.
Python, SQL, FastAPI, Cloud Platforms, LLM techniques, Data Warehousing, Data Lakes, IAM
1mo
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Senior C++/Python Software Engineer - Clearance Required
Hanover, Maryland, United States
$151k-$266k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
15+ YOETS/SCI with poly required, Bachelor's in CS or equiv, 15+ years software engineering experience, strong Python and C/C++ skills, scripting (Bash/awk/sed/PowerShell), RF signals familiarity, EM/STM32 experience preferred.
Python, C/C++, Bash, awk, sed, Microsoft PowerShell, STM32CubeMX, STM32CubeIDE, STM32CubeProgrammer, STM32CubeMonitor, Raspberry Pi4, Raspberry Pi5, FieldFox, Spectrum analyzer, multimeter
1mo
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Software Engineer, Senior
Fort Meade, Maryland, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
14+ YOESenior full-stack developer with experience in C++, JavaScript, and Python; TS/SCI clearance with polygraph; 14+ years of software engineering experience or 18+ years in lieu of degree.
C++, JavaScript, Python
2mo
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Senior Software Engineer, Python
Linthicum, Maryland, United States
OnsiteFull Time
CyberMaxx
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
1mo
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Python Software Engineer-TS/SCI with Poly
Linthicum Heights, Maryland, United States
$113k-$238k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
7+ YOETS/SCI with Poly clearance; 7+ years SWE; Python, Django or Flask, REST, microservices; experience with MongoDB, MariaDB or PostgreSQL; bachelor’s in CS or 4 yrs additional experience can substitute.
Python, Django, Flask, MariaDB, MongoDB, PostgreSQL, ReST, JSON, Swagger, AWS, C2S, Docker, Visual Studio Code, XML, Jira, Confluence, Git
3mo
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Senior Software Developer
Aberdeen, Maryland, United States
$104k-$181k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
5+ YOEDesign, develop, and implement software across multiple languages; lead components; troubleshoot; mentor and guide developers; ensure secure, maintainable results. Must be a US citizen with SECRET clearance.
Python, C++, Java, C#, Go, Docker, Kubernetes, CI/CD
2mo
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Senior CNO Developer
Fort Meade, Maryland, United States
$190k-$215k/yr OnsiteFull Time
Markon Solutions
Markon Solutions: Provides professional program and engineering services to federal agencies.
14+ YOEActive TS/SCI w/ Polygraph; 14+ yrs tech exp or 18+ yrs with HS; strong Python/C/C++ and OS/networking knowledge; leadership experience.
Python, C, C++, Assembly, TCP/IP, RAII, JIRA, Confluence, Crucible, CI/CD, DevSecOps
2mo
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Senior Systems Engineer
Colorado Springs or Albuquerque or Laurel
$125k-$150k/yr RemoteFull Time
Auria
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
3mo
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Senior CNO Developer
Fort Meade, Maryland, United States
$99k-$206k/yr OnsiteFull Time
Nightwing
Nightwing: Provides advanced cyber and intelligence solutions for national security.
6+ YOE6-10 years in C/C++ and Python; strong OS and network knowledge; security tooling; TS/SCI clearance; Bachelor in computer engineering, CS, or related field.
IDA Pro, Ghidra, Python, C/C++, Java, Unix, Windows
2mo
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Senior Software Engineer
Jessup, Maryland, United States
$185k-$215k/yr OnsiteFull Time
AeroVironment
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
4w
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Senior Software Engineer (C++, Javascript, Python - TS/SCI with Polygraph required)
Annapolis Junction, Maryland, United States
$175k-$225k/yr OnsiteFull Time
Red Alpha
Red Alpha: Provides software engineering and data science for defense missions.
14+ YOE14+ years software development experience; Bachelor's in Computer Science (or 4 years extra experience); strong C++, Python, JavaScript; Linux, Git, Docker, Kubernetes; CI/CD (Jenkins, Maven, Nexus); active TS/SCI with Polygraph.
C++, Python, JavaScript, Linux, Git, Docker, Kubernetes, Jenkins, Maven, Nexus, Helm, ArgoCD, Keycloak, Groovy, RPM, YUM, DNF, Jira, Kendo UI Test Builder
22h
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Software Engineer 2 - Python/PySpark/AWS
Annapolis Junction, Maryland, United States
$130k-$270k/yr OnsiteFull Time
Captivation Software
Captivation Software: Provides specialized software engineering for the intelligence and defense communities.
14+ YOETop Secret/SCI with favorable polygraph and U.S. citizenship required; 14 years SWE experience; Bachelor’s in CS or related (or 4 years substitute); proficiency in Python, PySpark, and AWS.
Python, PySpark, AWS Lambda, AWS Glue, DynamoDB
2mo
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365-369 - Senior Software Engineer
Fort Meade or Linthicum
$191k-$214k/yr OnsiteFull Time
ARSIEM
ARSIEM: Provides cybersecurity and software engineering to government agencies.
8+ YOEActive TS/SCI with polygraph; US citizenship; Bachelor's degree plus 8 years of experience; strong Python/Java; PySpark, Kubernetes, Docker, Elasticsearch; AI/ML tooling; cloud-native platforms; governance and agile delivery.
Python, Java, PySpark, Jupyter Notebooks, Kubernetes, Docker, Elasticsearch, GHOSTMACHINE, Query Time Analytics, Git, GitLab, Hugging Face, Bailo, OpenAI, AWS Bedrock, AWS SageMaker, AWS EKS, React, EX, Terraform
3mo
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Software Engineer, Senior
Fort Meade or Laurel
$87k-$198k/yr RemoteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
10+ YOESenior full-stack developer with React/Next.js, Git/Jenkins, TS/SCI with polygraph, and 10+ years of software engineering experience (or relevant degrees with more years).
React, Next.js, Git, Jenkins, GitLab CI/CD, Express, Flask, Spring, FastAPI, Docker, Kubernetes, Swarm, Elasticsearch, Kibana, Grafana, Redis, Kafka, Nginx, AWS, HAProxy, Python
2mo
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Senior Software Engineer III (Government)
Columbia, Maryland, United States
$89k-$208k/yr OnsiteFull Time
AT&T
AT&TNYSE: T: Provides wireless and fiber optic telecommunication services.
8+ YOEBachelor's degree; 8 years experience; .NET, Java, Python, C# skills; TS/SCI clearance.
.NET, ASP.NET, C#, Java, Python, Oracle
1mo
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Software Developer, Senior
Chambersburg, Pennsylvania, United States
$145k/yr HybridFull Time
AGE Solutions
AGE Solutions: Technology consulting and IT services for government agencies.
10+ YOEBachelor's degree, 10+ years software development, 3–5+ years full-stack web experience (React/Vue/Angular and Node.js/Python/Java), DoD Secret clearance, DoD 8140 qualification, cloud and CI/CD expertise.
React, Vue, Angular, Node.js, Python, Java, AWS, Azure, RESTful APIs, CI/CD
2mo
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Senior Software Engineer (AI Software & Operations)
United States or Elkridge
RemoteFull Time
Surefire Cyber
Surefire Cyber: Provides rapid incident response and digital forensics services.
Strong software engineering fundamentals; full-stack Python and React; production AWS and Kubernetes; Terraform; GitHub Actions; autonomy in a startup; eager to learn agentic AI workflows.
Python, React, AWS, Kubernetes, Terraform, GitHub Actions, LangChain, Claude Code, AutoGen, CrewAI
2mo
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Senior Staff Engineer - Financial Substantiation Platform *Hybrid*
Bethesda or Dallas or Washington or Falls Church or Baltimore or Seattle
$120k-$260k/yr HybridFull Time
GEICO
GEICO: Provides vehicle and property insurance services to consumers.
10+ YOESenior software engineer with 10+ years, architecture leadership, distributed systems, cloud, and data-focused reconciliation platforms. Strong collaboration with Finance, Compliance, and Product.
Java, C#, Go, REST, gRPC, SQL, AWS, Azure, GCP, CI/CD, Containers, IaC, DevOps, Kubernetes, Kafka, Snowflake, Airflow, Python, PySpark, Snowpark

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