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Intern Java Backend Developer Jobs in Jacksonville, FL

Avani Technology Solutions, Inc.

Developer

Jacksonville, FL · On-site

$47.25 - $61.25/hr

Top Three Skills: (1) J2EE / Java Development: 8 - 10 years of experience developing web-based Java ... EJBs • Back-End: Oracle • Responsive Design Components • Web Service Calls that pass XML ...

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How much do intern java backend developer jobs pay per hour?

As of Jun 18, 2026, the average hourly pay for intern java backend developer in Jacksonville, FL is $50.62, according to ZipRecruiter salary data. Most workers in this role earn between $45.00 and $58.37 per hour, depending on experience, location, and employer.

What kinds of projects and tasks can I expect as an Intern Java Backend Developer?

As an Intern Java Backend Developer, you’ll typically work on tasks such as writing and testing APIs, fixing bugs, and implementing core backend features under the guidance of senior developers. You may also participate in code reviews, collaborate with frontend and QA teams, and help with database management or performance optimization. These projects are designed to give you hands-on experience with Java frameworks, version control systems, and agile development practices, all while contributing to real-world applications.

What are the key skills and qualifications needed to thrive as an Intern Java Backend Developer, and why are they important?

To thrive as an Intern Java Backend Developer, you need a solid understanding of Java programming, object-oriented principles, and basic knowledge of backend frameworks like Spring, often supported by coursework or relevant projects. Familiarity with databases (such as MySQL), version control systems like Git, and build tools (e.g., Maven or Gradle) is typically expected. Strong problem-solving abilities, eagerness to learn, and effective communication skills help you collaborate and adapt in team environments. These skills and qualities are crucial for contributing to real projects, growing your technical expertise, and supporting overall team success.

What does an Intern Java Backend Developer do?

An Intern Java Backend Developer assists in building and maintaining the server-side logic of web applications using Java. They typically work under the guidance of senior developers, writing code, fixing bugs, and learning about frameworks like Spring or Hibernate. Their responsibilities often include database interaction, API development, and ensuring applications are scalable and efficient. Interns gain practical experience with industry-standard tools and workflows, helping prepare them for a full-time backend development role.
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Intern Java Backend Developer jobs near you
Java Web Developer for Reactive Enterprise Applications

Java Web Developer for Reactive Enterprise Applications

TriOptus LLC

Jacksonville, FL • On-site

$47.25 - $61.25/hr

Contractor

Posted 15 days ago

Job description

These are resources with Specialized skills to support in development of digital transformation. They will help in building the user-friendly frontend application using modern web technologies, Build a robust backend, integrations hub.
Required Skills:
  • Spring WebFlux - Minimum of 3 years of experience in building reactive REST APIs and handling non-blocking requests.
  • Project Reactor Framework - Minimum of 3 years experience with Reactor for developing asynchronous, reactive systems.
  • R2DBC (Reactive Relational Database Connectivity) - Experience working with R2DBC for non-blocking database interactions (minimum 2 years).
  • Reactive Design Patterns - Practical knowledge of reactive design patterns and experience in high-performance applications.
  • Microservices and Distributed Systems - Experience in designing and implementing microservices with resilience patterns.
  • Java - Proficiency in Java (minimum 5 years) with a strong foundation in functional programming principles.
  • Debugging and Performance Tuning - Proficiency in using tools like VisualVM, JProfiler, or similar to troubleshoot and optimize application performance.

Optional / Auxiliary Skills:
  • Docker and Kubernetes - Familiarity with containerization and orchestration for deploying reactive applications.
  • Monitoring and Logging - Knowledge of tools like ELK Stack or Prometheus for application monitoring in production environments.

Required Skills : Java
Basic Qualification :
Additional Skills :
This is a high PRIORITY requisition. This is a PROACTIVE requisition
Background Check : No
Drug Screen : No

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