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Senior Java Backend Developer Jobs in Claymont, DE

Sarian, Inc.

Core Java Developer

Newark, DE · On-site

Role: Sr. Java Developer Location: Newark, DE Onsite position Fulltime position JD Skill: Sr. Java Developer * Experienced in building highly scalable Java and J2EE applications. * Good experience in ...

Mondo

Sr. Backend Engineer

Media, PA · Remote

$90 - $105/hr

Senior Backend Software Engineer (Java/Go), Hybrid - Onsite 4 Days/Week. Start date is ASAP for this Contract position. Job Title: Senior Backend Software Engineer (Java/Go) Location-Type: Hybrid ...

BI-Commercial

Java FSD

Wilmington, DE · On-site

$49.50 - $64/hr

Java FSD with AWS An FSD/FSPE has an "end to end product" mindset - design, implementation, testing and deployment, and adds an additional skill (s) on top of traditional front/back-end developer ...

1 point system

Backend Java Developer

Newark, DE · On-site

$49.25 - $64/hr

Java/J2ee, Oracle Backend, WebSphere, Kafka, spring boot, OpenShift, containerization, Kubernetes Position Summary Senior Application Developer will be responsible/need to understanding business ...

Donato Technologies, Inc

Java FSD

Wilmington, DE · On-site

$49.50 - $64/hr

... front/back-end developer role * Design and developer application using Core Java * Design and ... developer application using J2EE. Experience in J2EE design patterns * Create/consume Rest APIs ...

Donato Technologies, Inc

Java FSD

Wilmington, DE · On-site

$49.50 - $64/hr

... front/back-end developer role * Design and developer application using Core Java * Design and ... developer application using J2EE. Experience in J2EE design patterns * Create/consume Rest APIs ...

STS Worldwide Inc.

Sr. Java J2EE Developer

Wilmington, DE · On-site

$55.50 - $70.75/hr

Sr. Java J2 EE Developer Onsite Job F2F interview is amust NO DIRECT CANDIDATES Must Have Skills * Extensive hands-on experience with Java springboot . * Strong experience designing and developing ...

New

Ampcus Inc

Sr. Java Developer

Wilmington, DE · On-site

$55.50 - $70.75/hr

They are in search of a highly motivated candidate to join their talented team as a Sr. Java Developer, responsible for executing software solutions, design, development, and technical ...

Spruce Infotech Inc

Sr. Java Developer

Wilmington, DE · On-site

$55.50 - $70.75/hr

Provide expert knowledge and guidance for acquisition related backend Java and/or frontend Web features. Ensure that the development teams are adhering to the client SDLC process. Provide technical ...

Donato Technologies, Inc

Java FSD with AWS

Wilmington, DE · On-site

$49.50 - $64/hr

... back-end developer role Design and developer application using Core Java Design and developer application using J2EE. Experience in J2EE design patterns Create/consume Rest APIs & Microservices ...

Keylent Inc

Sr. Java Engineer

Wilmington, DE · On-site

$121K - $159K/yr

Job Summary : Keylent Inc is seeking a Sr. Java Engineer to join their team in Wilmington, DE. The role involves strong core Java development, expertise in Spring Boot and microservices, and ...

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All JobsJava Backend Developer JobsSenior Java Backend Developer JobsSenior Java Backend Developer Jobs in Claymont, DE

Senior Java Backend Developer information

See Claymont, DE salary details

$62.4K

$136.4K

$185.8K

How much do senior java backend developer jobs pay per year?

As of Sep 1, 2026, the average yearly pay for senior java backend developer in Claymont, DE is $136,422.00, according to ZipRecruiter salary data. Most workers in this role earn between $117,600.00 and $152,700.00 per year, depending on experience, location, and employer.

What is a senior Java backend developer?

A Senior Java Backend Developer is responsible for designing, implementing, and maintaining the server-side logic of applications using Java. They work with databases, APIs, and cloud services to ensure high performance and scalability. Additionally, they collaborate with front-end developers, DevOps teams, and business stakeholders to deliver robust and secure solutions. Seniors are expected to mentor junior developers and contribute to architectural decisions and best practices.

What are the typical daily responsibilities of a senior Java backend developer?

Senior Java Backend Developers usually spend their days designing and implementing backend components, reviewing code, and optimizing system performance. You may take part in architecture discussions, mentor junior developers, and troubleshoot complex technical issues. Collaboration with front-end developers, QA testers, and project managers is frequent to ensure seamless integration and successful product delivery. Additionally, you might be responsible for maintaining system documentation and keeping up-to-date with new technologies relevant to backend development. Overall, the role combines hands-on coding with leadership and cross-functional teamwork.

What are the key skills and qualifications needed to thrive in the senior Java backend developer position, and why are they important?

To thrive as a Senior Java Backend Developer, you need deep knowledge of Java, object-oriented design, RESTful APIs, and database systems, typically backed by a degree in computer science or related field and several years of relevant experience. Expertise in frameworks like Spring, ORM tools such as Hibernate, version control systems like Git, and, often, certifications such as Oracle Certified Professional Java Programmer are valued. Strong problem-solving, leadership, and clear communication skills help in mentoring junior developers and collaborating across teams. These competencies ensure robust, scalable backend solutions and effective team coordination in complex software projects.

What are the most commonly searched types of Java Backend Developer jobs in Claymont, DE?

The most popular types of Java Backend Developer jobs in Claymont, DE are:

What are popular job titles related to Senior Java Backend Developer jobs in Claymont, DE?

For Senior Java Backend Developer jobs in Claymont, DE, the most frequently searched job titles are:

What job categories do people searching Senior Java Backend Developer jobs in Claymont, DE look for?

The top searched job categories for Senior Java Backend Developer jobs in Claymont, DE are:

What cities near Claymont, DE are hiring for Senior Java Backend Developer jobs?

Cities near Claymont, DE with the most Senior Java Backend Developer job openings:

Senior Java Backend Developer jobs near you
Infographic showing various Senior Java Backend Developer job openings in Claymont, DE as of August 2026, with employment types broken down into 79% Full Time, 6% Part Time, and 15% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $136,422 per year, or $65.6 per hour.

Sr. Java Microservice Developer

Inherent Technologies

West Chester, PA • On-site

$54.25 - $69.25/hr

Other

Re-posted 5 days ago

Job description

Position: Sr. Java Microservice Developer

Location: West Chester, PA*Day 1 Onsite

For this SR - Java, the candidates need to come with Tmobile experience.

  • Tmobile experience with Network/provisioning/activation API's

Mandatory Skills

Java, Springboot, Microservices

JD

Skills & Experience:

  • 7 10 years of relevant experience.
  • Proficiency in Java programming language.
  • Strong experience developing RESTful microservices using the Spring Boot framework.
  • Experience designing and implementing BPMN processes using Activiti or Flowable.
  • Proficient with SQL and NoSQL databases, including MongoDB, Couchbase, and Oracle.
  • Experience with event-driven architecture using Apache Kafka, RabbitMQ, or Amazon MSK.
  • Skilled in deploying and scaling applications on AWS, Azure, and Cloud Foundry.
  • Familiarity with containerization and orchestration tools such as Docker and Kubernetes.
  • Experience with CI/CD pipelines using tools like Jenkins, GitLab CI, or GitHub Actions.
  • Proficient in infrastructure as code (IaC) using Terraform or AWS CloudFormation.
  • Knowledge of monitoring and observability tools such as AppDynamics, ELK Stack, Prometheus, Grafana, and OpenTelemetry.
  • Understanding of RESTful API design principles and OpenAPI/Swagger specifications.
  • Experience with unit testing, integration testing, and test automation using JUnit, Mockito, Postman, or Selenium.
  • Familiarity with secure coding practices, OAuth2, JWT, and API security.
  • Strong understanding of object-oriented design, design patterns, and algorithms.
  • Experience using AI-assisted development tools such as GitHub Copilot, Amazon CodeWhisperer, or Tabnine to enhance productivity and code quality.
  • Excellent analytical and communication skills; able to explain complex technical concepts clearly.
  • Embraces a DevOps mindset and agile development practices.
  • Comfortable working in fast-paced, collaborative environments



Rohit Chauhan

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