📣 HiringCafe is hiring a Founding Growth Hacker! Learn More · Apply here
Senior Java Developer Jobs in Middletown, DE, US
270+ senior java developer jobs from 77 companies hiring in Middletown, DE, US.
3w
Save
Mark Applied
Hide
Senior Java Developer
Camden or Conshohocken
$145k-$165k/yr HybridFull Time
8+ YOE8+ years of software development; expert Java and Spring; strong architecture and coding principles; event-driven patterns; observable, testable production systems; containerization; CI/CD; data modeling; API design.
Java, Spring, Hibernate, Kafka, RabbitMQ, Docker, Kubernetes, Terraform, Ansible, CI/CD, GitHub Actions, Jenkins, Dynatrace, Azure Monitor, OpenAPI
1mo
Save
Mark Applied
Hide
Senior Java Developer
Chicago or Morristown or Wilmington
$79k-$138k/yr HybridFull Time
4+ YOE4+ years enterprise Java, Guidewire InsuranceNow experience, REST/SOAP APIs, SQL, JavaScript/jQuery/Velocity; full SDLC; Agile/Waterfall; BA/Business stakeholder collaboration.
Java, Guidewire InsuranceNow, REST API, SOAP API, SQL, JavaScript, jQuery, Velocity
3w
Save
Mark Applied
Hide
Senior Java Developer
Camden or Conshohocken
$145k-$165k/yr HybridFull Time
8+ YOE8+ years software development; expert Java/Spring; 12-factor, SOLID, clean code; event-driven patterns; production observability; API design; containerization; CI/CD; data modeling; distributed systems patterns.
Java, Spring, Hibernate, Kafka, RabbitMQ, Docker, Kubernetes, Terraform, Ansible, GitHub Actions, Jenkins, Dynatrace, Azure Monitor, OpenAPI
1w
Save
Mark Applied
Hide
Sr Java Software Engineer
King of Prussia, Pennsylvania, United States
OnsiteFull Time
7+ YOEBachelor's in CS/Engineering; 7+ years in software development; proficient in Java Spring Boot REST/gRPC; microservices; Docker/Kubernetes; CI/CD; Agile; strong troubleshooting.
Java, Spring Boot, REST, gRPC, Docker, Kubernetes, CI/CD, Linux, OpenTelemetry, Prometheus, Grafana, Kafka
3d
Save
Mark Applied
Hide
Java Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
7+ YOESenior-level software engineer proficient in Java, Python, Docker/Kubernetes, CI/CD, microservices; TS/SCI clearance with polygraph; 7+ years SWE experience; BS in CS or related field with experience substitutions.
Java, Python, Shell, Git, Nexus, Maven, JavaScript, JUnit, IDE, Docker, Kubernetes, CI/CD, Spring, Hibernate, MySQL, Web Services, Vaadin, GWT, Nexus, SonarQube
2mo
Save
Mark Applied
Hide
AWS Lead Software Engineer-Java
Wilmington, Delaware, United States
OnsiteFull Time
5+ YOEFormal software engineering training with 5+ years of practical experience; expert in system design, Java, REST APIs, and CI/CD; strong AWS and SQL/NoSQL knowledge.
Java, SpringBoot, Swagger, SQL, NoSQL, AWS, CI/CD, REST API
2w
Save
Mark Applied
Hide
Senior Software Developer
Richmond or Baltimore or Nashville or Mechanicsburg or Raleigh
$105k-$145k/yr HybridFull Time
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
1mo
Save
Mark Applied
Hide
Senior Software Engineer
Annapolis Junction, Maryland, United States
$176k-$282k/yr OnsiteFull Time
20+ YOESenior software engineer with strong Java/JavaScript, UI focus, TS/SCI with poly, BS in CS or 20+ yrs experience.
Java, JavaScript, Vue.js, Linux, Spring Boot, jQuery, CSS, Bootstrap, Plotly, MongoDB, Elasticsearch, OpenSearch, Tomcat, AWS, CI/CD, UX, Velocity Templates, Jersey
2w
Save
Mark Applied
Hide
Software Engineer, III - Java
Fort Washington, Pennsylvania, United States
$120k-$130k/yr RemoteFull Time
5+ YOE5+ years software development experience; Java 17+, Spring Boot; experience with AI tools; healthcare IT preferred; strong SDLC and collaboration skills.
Java, Spring Boot, Git, MySQL, MongoDB, REST, AWS, FHIR, HL7, Claude
4d
Save
Mark Applied
Hide
Senior Software Engineer
Oaks, Pennsylvania, United States
OnsiteFull Time
5+ YOEFive years of post-baccalaureate experience in application development, cloud-native architectures, microservices, Java/Spring, databases, DevOps, and data streaming.
Java, Spring Boot, Spring MVC, Hibernate, JPA, Oracle, MySQL, SQL Server, MongoDB, Snowflake, Kafka, Git, Docker, Kubernetes, Jenkins, REST, JSON
1mo
Save
Mark Applied
Hide
Lead Software Engineer II – Java & Python
Wilmington, Delaware, United States
$100k-$135k/yr RemoteAll Commitments Available
4+ YOE4-6 years of software engineering, strong Java/Python backend, AWS experience, SQL/NoSQL knowledge, CI/CD, Docker, and collaboration skills.
Java, Python, AWS, DynamoDB, RDS, PostgreSQL, DocumentDB, Docker, ECS, EKS, CloudWatch, Datadog, CI/CD
1w
Save
Mark Applied
Hide
Software Engineer 3 - Java/GPU
Annapolis Junction, Maryland, United States
$130k-$270k/yr OnsiteFull Time
20+ YOESenior software engineer with Java experience; TS/SCI with polygraph; 20 years SWE; BS in CS; 4 years substitute for degree.
Java, GPU programming, GPU-accelerated applications
1mo
Save
Mark Applied
Hide
Lead Software Engineer - Sr. Java/AWS Developer
Wilmington, Delaware, United States
OnsiteFull Time
5+ YOE5 years of software engineering experience; Java and AWS proficiency; design, development, testing, and operational stability; microservices REST API development; CI/CD and containerization.
Java, AWS, Docker, Kubernetes, DataDog, Dynatrace, Splunk, REST API, CI/CD, Git
2w
Save
Mark Applied
Hide
Software Engineer Senior (Networking)
King of Prussia or Littleton
OnsiteFull Time
5+ YOESenior software engineer with networking experience; Java/Python skills; strong problem-solving and collaboration.
Java, Python, REST APIs, Docker, Kubernetes, Elastic Stack, ActiveMQ, CI/CD, Web applications
1mo
Save
Mark Applied
Hide
Software Engineer Lead (Java Development & Application Support Lead)
Philadelphia, Pennsylvania, United States
OnsiteFull Time
3+ YOELead Java development with Spring Boot, Angular UI, API development (REST/GraphQL); SQL/Oracle; enterprise Java; Agile/Scrum.
Java, Spring Boot, Angular, REST, GraphQL, Oracle, SQL
1w
Save
Mark Applied
Hide
Senior Software Applications Developer
West Chester or United States or North America
RemoteFull Time
4+ YOEBachelor’s degree in Computer Science; 4+ years software development; experience with Java, Python, C#; CI/CD tools like Jenkins, GitLab, TeamCity; software design, testing, and automation.
Java, Python, C#, CI/CD, Version Control, Bug Tracking, Automation Frameworks
3w
Save
Mark Applied
Hide
Senior Software Developer
Aberdeen, Maryland, United States
$104k-$181k/yr OnsiteFull Time
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
Save
Mark Applied
Hide
Senior Software Developer (Secret Clearance Required)
Aberdeen, Maryland, United States
HybridFull Time
3+ YOEDoD security clearance, 3-5+ years in software development, strong Android/Java/C/C++, DevOps tools, Linux, APIs, Docker, Kubernetes, cloud, Agile.
Git, Gitlab, Jira, Nexus, Artifactory, Gradle, Bash, Python, Docker, Kubernetes, Linux, Android, Java, JavaScript, C, C++, C#, APIs, NVIDIA CUDA, ElasticSearch, Kibana
4d
Save
Mark Applied
Hide
Senior Application Developer
Philadelphia, Pennsylvania, United States
$84k-$135k/yr RemoteFull Time
3+ YOEBachelor in Computer Science or related field; 3-5 years application development; Java, JavaScript; Oracle SQL/PL-SQL; Ellucian Banner experience; SDLC and Agile; enterprise environments
Java, JavaScript, Oracle SQL, PL/SQL, HTML, CSS, REST, SOAP, Unix/Linux, Shell scripting, Ellucian Banner APIs, Page Builder
3w
Save
Mark Applied
Hide
Senior Software Engineer
Aberdeen, Maryland, United States
$140k-$225k/yr HybridFull Time
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
4d
Save
Mark Applied
Hide
Senior Application Developer
Philadelphia, Pennsylvania, United States
$84k-$135k/yr RemoteFull Time
3+ YOEBachelor in Computer Science or related field; 3-5 years of application development in enterprise environments; experience with Ellucian Banner, Oracle SQL/PLSQL, Java/JavaScript; web tech, Unix/Linux, Python a plus; SDLC and Agile experience.
Java, JavaScript, HTML, CSS, REST, SOAP, Oracle SQL, PL/SQL, Python, Unix/Linux, Shell scripting, Ellucian Banner, Page Builder
3w
Save
Mark Applied
Hide
Salesforce Senior Developer
Wilmington or Cincinnati or Worthington
$90k-$121k/yr HybridFull Time
5+ YOE5+ years Salesforce development; Bachelor's or equivalent; Salesforce Platform Developer II; multiple tech skills including Apex, LWC, Visualforce, JSON, XML, JavaScript, SQL, Java, C#, C++, SOAP, AWS/Azure; multiple Salesforce certifications.
Apex, LWC, Visualforce, JSON, XML, JavaScript, SQL, Java, C#, C++, SOAP, AWS, Azure, GearSet
1mo
Save
Mark Applied
Hide
Senior Developer (Newtown Square, PA, US, 19073)
Newtown Square, Pennsylvania, United States
$153k-$196k/yr OnsiteFull Time
4+ YOEBachelor's or Master’s in CS/Data Science with 4–6 years of related experience; strong Java/Python, frontend, and devops skills.
Java, Python, HTML, CSS, AngularJS, Sonar, JUnit, Sahi, SOAP, REST, SQL, SCM, Jira, CI/CD, Machine Learning
2w
Save
Mark Applied
Hide
Senior Software Engineer
Annapolis Junction, Maryland, United States
$170k-$230k/yr OnsiteFull Time
7+ YOEActive TS/SCI with poly clearance required; 9 years with bachelor's or 7 years with master's; US citizenship; AWS, microservices, API development, Lambda, RDS, Grafana, Prometheus, MongoDB, DocumentDB.
Java, Spring Boot, Python, AWS, MongoDB, RDS, Grafana, Prometheus, DocumentDB, COTS/GOTS
2mo
Save
Mark Applied
Hide
Senior Software Engineer, Platform
Philadelphia or New York
$116k-$209k/yr OnsiteFull Time
4+ YOEDevelop and optimize platform services; cloud focus; Agile; automation; 4-7 years platform experience; AWS preferred.
AWS, Kubernetes, Go, Java, Scala, Python, JavaScript
1w
Save
Mark Applied
Hide
Senior Application Developer
Annapolis Junction, Maryland, United States
$194k-$249k/yr OnsiteFull Time
12+ YOETop Secret clearance with Full Scope Polygraph; US citizenship; 12 years of relevant experience with a Bachelor's or 10 years with a Master's; ability to obtain/maintain required clearance.
C, C++, Python, Rust, Go, Git, Subversion, Jira, Confluence, Ghidra, Java, JavaScript, PowerShell, Bash, Assembly
1w
Save
Mark Applied
Hide
Applications Development Java Programmer – Assistant Vice President
New Castle, Delaware, United States
$107k-$161k/yr HybridFull Time
5+ YOE5+ years Java development with cloud experience; expert Java, API design; REST APIs with Spring/Spring Boot; Oracle/SQL/NoSQL; OpenShift, Kubernetes; MQ/Kafka; SDLC/Agile; DevOps/CI/CD; leadership and autonomous work.
Java, Spring, Spring Boot, OpenShift, Kubernetes, MQ, Kafka, Oracle, SQL, NoSQL, REST, APIs, CI/CD
1mo
Save
Mark Applied
Hide
Senior Engineer, SDET
Philadelphia, Pennsylvania, United States
$89k-$161k/yr OnsiteFull Time
5+ YOE5+ years test automation; BS +5 years or MS +3 years; 4-7 years in 3+ languages; 4-7 years in 3+ automation tools; agile/Testing methodologies; Unix/Windows apps; CA Service Virtualization.
Cypress, Selenium, TestNG, Appium, Sauce Labs, Rest Assured, Postman, Cucumber, Jasmine, Protractor, TypeScript, JavaScript, Python, Java
1w
Save
Mark Applied
Hide
Senior Software Engineer (Broadband Device Validation)
Philadelphia, Pennsylvania, United States
OnsiteFull Time
5+ YOE5-7 years in system design, software development, broadband product architecture, networking protocols, and cloud/infrastructure tools.
Java, Python, Shell Scripting, C, C++, SQL, MongoDB, Docker, Kubernetes, AWS, Cloud Foundry, Jenkins, Git
3d
Save
Mark Applied
Hide
Senior Staff Engineer - Financial Substantiation Platform *Hybrid*
Bethesda or Dallas or Washington or Falls Church or Baltimore or Seattle
$120k-$260k/yr HybridFull Time
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
1mo
Save
Mark Applied
Hide
Senior Software Algorithm Engineer
Aurora or Philadelphia
$82k-$172k/yr OnsiteFull Time
5+ YOEBS in STEM fields; 5+ years software development; lead interdisciplinary team; TS/SCI clearance; Python/C/C++, Java, or Rust; domains SDA/SATCOM/SIGINT; willing to polygraph.
Python, C/C++, Java, Rust, Linux, AWS, CUDA, OpenCV, Git, Docker, Kubernetes, S3, EC2, Lambda
1mo
Save
Mark Applied
Hide
Senior CIAM Engineer
Cedar Rapids or Philadelphia or Denver
$98k-$120k/yr HybridFull Time
5+ YOESenior CIAM Engineer with enterprise IAM experience; IBM Security Access Manager and Okta/Auth0 expertise; cloud/on-prem; SSO; DNS/PKI; scripting; project management.
IBM Security Access Manager, Okta Auth0, PingFederation, Federation Services, WebSphere, IIS, Tomcat, Apache, Oracle Access Manager, DNS, PKI, PowerShell, Ansible, Java, Terraform, AWS
1mo
Save
Mark Applied
Hide
Software Engineer, Vertical Lift (Experienced or Senior)
Ridley Park, Pennsylvania, United States
$135k-$232k/yr OnsiteFull Time
5+ YOEBachelor’s in engineering; 5+ years full life-cycle software development; proficiency in C, C++, C#, Python, Java, Ada, Linux; ability to obtain US Secret clearance.
C, C++, C#, Python, Java, Ada, Linux, Git, DOORS, CI/CD
1mo
Save
Mark Applied
Hide
Software Engineer, Vertical Lift (Experienced or Senior)
Ridley Park, Pennsylvania, United States
$135k-$232k/yr OnsiteFull Time
5+ YOEBachelor's degree in engineering; 5+ years full software development lifecycle experience; proficiency in C, C++, C#, Python, Java, Ada, Linux; ability to obtain US Secret clearance.
C, C++, C#, Python, Java, Ada, Linux, Git, CI/CD, DOORS, DO-178C
2w
Save
Mark Applied
Hide
Senior DevOps Engineer
Omaha or Hebron or Lehi or King of Prussia
$95k-$147k/yr HybridFull Time
5+ YOESenior DevOps Engineer with 5+ years in cloud/DevOps, AWS expertise, IaC (Terraform/CloudFormation), Python, CI/CD, Git, and experience with AWS CodeBuild/CodePipeline; onsite three days weekly; Bachelor’s preferred or equivalent experience.
AWS Cloud Computing, Git, GitHub, Terraform, CloudFormation, Python, CI/CD, Linux, Windows, Java, Node.js, .NET Core
1w
Save
Mark Applied
Hide
Palantir Forward Deployed Senior Engineer
Chicago or Milwaukee or Dallas or Columbus or Kirkland or New York or Cincinnati or St. Louis or Cleveland or Oklahoma City or Austin or Albany or St. Pete or Hartford or Pittsburgh or Phoenix or Seattle or Denver or Boston or Philadelphia or Des Moines or Overland Park or Los Angeles or Charlotte or Walnut Creek or Carmel or San Francisco or Morristown or Denver or Boston or United States
HybridFull Time
5+ YOE5+ years data engineering; 3+ years Palantir Foundry/Gotham; 3+ years AI techniques with Palantir AIP; 5+ years cloud (AWS/Azure/GCP); 5+ years Python, PySpark, Java; Bachelor’s degree in CS/Engineering or equivalent
Python, PySpark, Java, Palantir Foundry, Palantir Gotham, AIP
2mo
Save
Mark Applied
Hide
Senior Network Automation Engineer, Full-Stack
Richmond or St. Louis or Cleveland or Philadelphia or Chicago or San Francisco or New York or Kansas City or Boston or Atlanta or Minneapolis or Dallas
$113k-$156k/yr OnsiteFull Time
6+ YOESenior-level full-stack and network automation engineer with Java, JavaScript/NextJS, Python; AWS, IaC (Terraform/CloudFormation); MuleSoft, ServiceNow, OpenShift; UI tooling (Angular); on-call support.
NextJS, Java, JavaScript, Python, Java SpringBoot, OpenShift, MuleSoft, ServiceNow, Angular, AWS, Terraform, CloudFormation, GitHub, GitLab, Maven, Jenkins
1mo
Save
Mark Applied
Hide
Software Systems Engineer Senior
Aberdeen, Maryland, United States
$116k-$262k/yr OnsiteFull Time
10+ YOESenior software systems engineer with 10+ years in the software lifecycle, TS/SCI clearance, leading contractor teams, RF architectures, EW/SIGINT, and MOSA; Bachelor's in CS or Software Engineering.
Java, Python, C++, MOSA, AWS, Azure, containerization, microservices, CI/CD, Scrum, Kanban, APIs, Databases, Cybersecurity
3w
Save
Mark Applied
Hide
Senior Application\Middleware Engineer
Charleston or Newark or Bellevue or Plano or Detroit or Nashville or Tulsa or New York
OnsiteFull Time
10+ YOEBachelor’s degree in engineering; 10+ years in a global environment; AWS certifications or equivalent; strong middleware experience (IBM WebSphere, Apache Tomcat, Java, JBoss, SFTP, Dynatrace, IIS, etc.); Windows/Linux server administration; AWS services including S3, EKS, ECS, containers, Kubernetes, Terraform; scripting in PowerShell or Python a ...
AWS, Linux, Windows Server, IBM WebSphere, Apache Tomcat, Java, JBoss, SFTP, Dynatrace, IIS, Terraform, PowerShell, Python, ServiceNow, Microsoft Teams, SharePoint, Kubernetes, EKS, S3, ECS
2mo
Save
Mark Applied
Hide
Entry-Senior Software Engineer- TS/SCI w/ Polygraph
Annapolis Junction, Maryland, United States
$95k-$230k/yr OnsiteFull Time
Software engineer with Java, Python, Git; containerization; CI/CD; Agile; Spring, Hibernate, MySQL; BS in CS or related, 4 years exp may substitute
Java, Python, Git, Shell, Maven, JavaScript, HTML, CSS, JUnit, IDEs, Docker, Kubernetes, OpenShift, GitLab CI, SonarQube, Spring, Hibernate, MySQL, Web Services, Vaadin
HiringCafe market data
Senior Java Developer Jobs market signals in Middletown, DE, 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
270+
Hiring companies
77
Fresh sample
57% new in 30d
Salary visibility
68% show pay
Companies appearing in this market
JPMorgan ChaseUnited States Cold StorageBoeingComcastFiservLockheed MartinT-MobileTransamerica
Work location mix in visible results
Onsite: 48Hybrid: 27Remote: 5