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87 senior java python developer jobs at 25 companies in Lancaster, PA

1w
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Senior Lead Software Engineer - Java/AWS/Python
Plano or Wilmington
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
10+ YOEExpertise in Java, Python, AWS, Terraform and cloud-native development; experience with Kafka and automation; demonstrated software design, delivery, and team leadership with significant industry experience.
Java, Python, AWS, EKS, S3, Lambda, EMR, Terraform, Kafka, Databricks
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3mo
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Lead Software Engineer II – Java & Python
Wilmington, Delaware, United States
$100k-$135k/yr RemoteMultiple Commitments Available
Best Egg
Best Egg: Provides personal loans and credit cards for prime borrowers.
4+ YOE4-6 years professional software engineering; strong backend Java and Python; SQL/data modeling; AWS; DynamoDB, RDS, PostgreSQL; CI/CD; Docker; ECS/EKS; CloudWatch/Datadog; excellent communication and collaboration.
AWS, Docker, Kubernetes, ECS, EKS, CloudWatch, Datadog, DynamoDB, RDS, PostgreSQL, DocumentDB, CI/CD
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3w
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Senior Software Engineer
Aberdeen, Maryland, United States
$90k-$198k/yr OnsiteFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
10+ YOE10+ years software engineering experience in Defense, BA/BS or equivalent experience, proficiency with C++, Java, Python, C#, secure coding and Defense standards, DoD cybersecurity certification preferred.
C++, Java, Python, C#, Git, SVN, CI/CD, automated testing tools
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1mo
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Software Developer
Belcamp, Maryland, United States
$83k-$140k/yr OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
10+ YOEBSc and 10+ years software development experience, U.S. citizenship with active Secret clearance, proficiency with Java/Python/C#/JavaScript, Linux/Windows experience, testing and documentation skills, DoD experience preferred.
Java, Python, C#, JavaScript, Linux, Windows
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3w
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Senior Software Engineer (Top Secret Clearance)
King of Prussia, Pennsylvania, United States
$93k-$164k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Active US Top Secret clearance (investigation or CV within 5 years), proficiency in Java/C#/Python/JavaScript/TypeScript, web stack (HTML5/CSS3, modern JS frameworks), CI/CD, containerization, Git, Scrum experience, and US citizenship.
Java, C#, Python, JavaScript, TypeScript, HTML5, CSS3, React, Angular, Vue, Jenkins, GitLab CI, Azure DevOps, Docker, Kubernetes, Git, Helm, AWS, Azure, Openstack, Openshift, Horizon
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6d
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Senior Software Engineer – Forward Deployed (Fort Meade)
Fort Meade or Mechanicsburg
$159k-$184k/yr OnsiteFull Time
Cubic
Cubic: Develops defense training systems and public transit fare technology.
5+ YOEActive Secret clearance, Bachelor’s in CS or related (or equivalent), 5+ years software/DevOps experience, proficiency with Python/Node.js/Java/ C++ and Linux, Kubernetes, Git, Docker, GitLab CI/CD, strong troubleshooting and communication skills.
Python, Node.js, JavaScript, Java, C++, Linux, Git, Docker, Kubernetes, GitLab CI/CD, Ansible, PowerShell, Bash, PostgreSQL, REST APIs, GitHub Copilot, ChatGPT, Claude Code, Codex
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1w
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Senior Software Developer (NLP)
Aberdeen, Maryland, United States
$104k-$181k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
5+ YOEUS citizen with Secret clearance; bachelor’s degree with 5 years relevant software development experience (or 8 years experience); experience integrating NLP into production, proficiency in modern programming languages and mission-critical systems.
Python, C++, Java, C#, Go, Docker, Kubernetes, transformer-based frameworks, vector databases, LLM APIs
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5d
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Engineer, Site Reliability
Malvern or Charlotte
HybridFull Time
Vanguard
Vanguard: Provides mutual funds, ETFs, and investment management services.
8+ YOE8+ years experience with 2+ years development; expertise in distributed systems, Java/JavaScript, AWS, OpenTelemetry, Python, observability, cloud-native and production reliability.
Java, JavaScript, AWS, OpenTelemetry, Python
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1mo
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Senior Lead Software Engineer, Full Stack (Bank Tech)
McLean or Wilmington or Philadelphia
$209k-$262k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
6+ YOEBachelor's degree, 6+ years software engineering experience, 1+ year cloud experience (AWS/Azure/GCP); strong full-stack skills (JavaScript/Java/TypeScript/Python/Go), leadership of small teams, and fast onboarding to new codebases.
JavaScript, Java, TypeScript, Python, Go, AWS, Microsoft Azure, Google Cloud, Fargate, Lambda
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3w
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Software Engineer III
King of Prussia or United States
RemoteFull Time
Vertex
VertexNASDAQ: VERX: Automates global indirect tax calculation and compliance for enterprises.
5+ YOEBachelor's degree in CS/IT, 5+ years development experience across Linux/Windows/IBM i, CI/CD, ERP integrations; proficiency in Python, Java, C/C++, PL/SQL, REXX; experience with cloud, containers, and tax domain.
Linux/Unix, Windows, IBM Power Systems (IBM i), Python, Shell, Git, GitHub, Jenkins, REXX, RPG, COBOL, C/C++, Java, PL/SQL, Oracle, Workday, Microsoft, SAP, AWS, Kubernetes, Selenium, Cypress, Microsoft Copilot
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1w
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Senior Full Stack Data Engineer
West Chester, Pennsylvania, United States
OnsiteFull Time
Comcast
ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.
7+ YOEBachelor's preferred,5+ years full-stack/data engineering experience (7+ preferred),backend and frontend development,Power BI dashboards,API and microservices,Oracle/Mongo DB,Cloud Foundry,GitHub,ELK,Agile with Jira.
Power BI, Jira, Smartsheet, Java, Python, Node.js, React, Angular, Tailwind CSS, DotNet, REST, API Gateway, Mongo DB, Cloud Foundry, GitHub, GitHub Actions, ELK, Agentic AI, Open Spec SDD
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1mo
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Radio Services Software Engineer
Aberdeen Proving Ground, Maryland, United States
$150k-$174k/yr OnsiteFull Time
Sigmatech
Sigmatech: Provides specialized engineering, technical, and programmatic support for government agencies.
10+ YOEBachelor's in CS/SE (or equivalent experience), 10+ years software engineering with 3+ years on DoD communications, proficiency in C++, Java, or Python, secure coding and networking protocols knowledge, active DoD Secret clearance.
C++, Java, Python, VENOM, Agile, DevSecOps
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2mo
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Principal Software Engineer, Field Engineering
Aberdeen Proving Ground, Maryland, United States
$160k-$220k/yr OnsiteFull Time
Raft
Raft: Builds AI and data platforms for U.S. national defense.
5+ YOE5+ years hands-on software engineering; active Secret clearance; backend Go/Java/Rust; DevSecOps; Kubernetes; Bash/Python; Army-domain knowledge; customer-facing; Security+ readiness; willing to relocate to APG.
Go, Java, Rust, Kubernetes, Helm, CI/CD, Infrastructure as Code, Bash, Python, RMF
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1mo
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Senior Technical Support Engineer
Exton, Pennsylvania, United States
$76k-$114k/yr OnsiteFull Time
Synopsys
SynopsysNasdaq: SNPS: Provides software and IP for semiconductor design and manufacturing.
0+ YOEBS in engineering with 2+ years (or MS with 0+ years); coding in Python, MATLAB, C++, or Java; experience with Ansys or comparable CAE/CAD/EDA/PLM tools; strong written/verbal communication and troubleshooting skills.
STK, ODTK, TETK, Python, MATLAB, C++, Java, Ansys, CAE, CAD, EDA, PLM
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3w
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Lead AI Engineer
Berkeley Heights or Wilmington
$186k-$286k/yr OnsiteFull Time
Fiserv
FiservNew York Stock Exchange: FI: Provides financial technology and payment processing services to institutions.
10+ YOE10+ years software engineering; 8+ years with Java/Spring Boot and microservices; 5+ years technical leadership; 4+ years CI/CD and cloud/container experience; 3+ years building LLM-powered applications; bachelor's in CS/engineering or equivalent.
Java, Spring Boot, .NET, Angular, Python, GitLab CI, Jenkins, OpenShift, Kubernetes, Docker, AWS, Azure, Google Cloud Platform, Anthropic Claude, OpenAI, M365 Copilot, OAuth2, JWT, TLS
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3w
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Production Support Engineer
New Castle, Delaware, United States
$90k-$105k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
6+ YOE6+ years experience; bachelor’s in Computer Science/IT; proficiency with Linux/Unix, SQL/MySql, Java or Python; experience with Dynatrace/Datadog and JIRA/ServiceNow; strong troubleshooting and communication skills.
Linux, Unix, SQL, MySql, Java, Python, Dynatrace, Datadog, JIRA, ServiceNow
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5d
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Systems Engineer / Systems Analyst
Chesterbrook, Pennsylvania, United States
OnsiteFull Time
Arcfield
Arcfield: Systems engineering and mission support for defense and space.
5+ YOETS/SCI with polygraph required. Bachelor's (5+ years) or Master's/PhD (reduced years) in engineering, physics, math, CS or similar; experience with Matlab/Python/Perl/Java/C++/R; strong analysis and communication skills.
Matlab, Python, Perl, Java, C++, R
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5d
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Encryption Engineer (DevSecOps & SDLC)
Quincy or London or Princeton or Austin or Berwyn or Clifton
$120k-$203k/yr OnsiteFull Time
State Street
State StreetNYSE: STT: Provides investment servicing and management to institutional investors.
8+ YOE8+ years in software/platform/DevSecOps with experience embedding encryption, key/secrets/certificate management, SDLC/CI-CD integration, automation, IaC, cloud platforms, and strong programming/scripting skills.
Harness, Jenkins, Terraform, CloudFormation, Python, Java, Go, C#, JavaScript, TypeScript, PowerShell, Bash, Microsoft Azure, Amazon Web Services (AWS), OCI, Google Cloud Platform (GCP), Kubernetes, OpenShift, Hardware Security Modules (HSMs)
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1mo
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Data Engineer
Belcamp, Maryland, United States
$78k-$176k/yr RemoteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
5+ YOE5+ years application development experience, 3+ years building ETL/ELT workflows, experience with PySpark/Spark SQL and Palantir Foundry, ability to build/operate scalable data platforms, Secret clearance, Bachelor's degree.
PySpark, Spark SQL, Foundry Ontology, Foundry Workshop, Palantir Foundry Data Pipeline Builder, Palantir Foundry, Python, SQL, Scala, Java, UNIX, Linux, Shell scripting, AWS, Microsoft Azure, Google Cloud, Spark, Databricks, Hadoop, Hive, AWS EMR, Kafka, MongoDB, Cassandra, AWS Redshift, MySQL, Snowflake
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1mo
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Data Engineer
Belcamp or Aberdeen Proving Ground
$78k-$176k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
5+ YOE5+ years application development and enterprise-scale data application experience; PySpark, Spark SQL, Palantir Foundry experience; ability to build ETL/ELT workflows, debug Foundry pipelines; Bachelor's degree and Secret clearance required.
PySpark, Spark SQL, Palantir Foundry, Foundry Workshop, Foundry Data Pipeline Builder, Python, SQL, Scala, Java, UNIX, Linux, Shell, Databricks, Hadoop, Hive, AWS EMR, Kafka, MongoDB, Cassandra, AWS Redshift, MySQL, Snowflake, Microsoft Azure, Google Cloud
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