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Internship Java Developer Jobs in New Jersey (NOW HIRING)

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Internship Java Developer information

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$15

$57

$78

How much do internship java developer jobs pay per hour?

As of May 28, 2026, the average hourly pay for internship java developer in New Jersey is $57.56, according to ZipRecruiter salary data. Most workers in this role earn between $49.81 and $64.42 per hour, depending on experience, location, and employer.

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

To thrive as an Internship Java Developer, you need a solid understanding of Java programming, object-oriented principles, and basic software development concepts, often supported by coursework or personal projects. Familiarity with version control systems like Git, integrated development environments (IDEs) such as Eclipse or IntelliJ IDEA, and basic knowledge of databases are typically required. Strong problem-solving skills, eagerness to learn, and effective communication help interns adapt and contribute within development teams. These competencies enable you to quickly integrate into projects, support code quality, and grow professionally in a fast-paced environment.

What kinds of projects and tasks can an Internship Java Developer expect to work on during their internship?

As an Internship Java Developer, you can expect to work on a variety of projects that help you build practical skills, such as developing new features, fixing bugs, writing unit tests, or assisting with code reviews. You’ll likely collaborate closely with experienced developers and participate in team meetings or agile sprints, which provide valuable exposure to real-world software development processes. Projects may range from maintaining existing applications to contributing to new product development, giving you a well-rounded experience in Java programming. This role is designed to help you learn industry best practices and gain hands-on experience while receiving mentorship and feedback from your team.

What are Internship Java Developers?

Internship Java Developers are students or recent graduates who work in a company to gain practical experience in Java programming. They assist in developing, testing, and maintaining Java applications under the supervision of experienced developers. This role helps interns apply their academic knowledge to real-world projects, learn industry best practices, and improve their coding and teamwork skills. Internships often serve as a valuable stepping stone to full-time software development positions.

What is the difference between Internship Java Developer vs Junior Java Developer?

AspectInternship Java DeveloperJunior Java Developer
Required CredentialsTypically pursuing or recently completed a degree in Computer Science or related fieldBachelor's degree in Computer Science or related field, with some practical experience
Work EnvironmentTraining-focused, supervised environment, often part-time or temporaryFull-time, ongoing employment with more responsibilities
Employer & Industry UsageInternships offered by tech companies, startups, and IT departments for skill developmentEntry-level position in software development teams across various industries

The main difference between an Internship Java Developer and a Junior Java Developer is experience and responsibility. Internships are designed for students or recent graduates gaining initial exposure, while Junior Java Developers have more hands-on work experience and are expected to contribute more independently to projects.

What are the most commonly searched types of Java Developer jobs in New Jersey? The most popular types of Java Developer jobs in New Jersey are:
What cities in New Jersey are hiring for Internship Java Developer jobs? Cities in New Jersey with the most Internship Java Developer job openings:
Infographic showing various Internship Java Developer job openings in New Jersey as of May 2026, with employment types broken down into 69% Full Time, 15% Part Time, and 16% Contract. Highlights an 78% Physical, 4% Hybrid, and 18% Remote job distribution, with an average salary of $119,728 per year, or $57.6 per hour.
Associate Software Engineer

Full-time

Retirement, PTO

Posted 14 hours ago


Job description

Description

About The Role:
Innovative Defense Technologies (IDT), provider of cutting-edge cloud-based integration, automated testing and data analysis for complex, mission-critical systems in the US Department of Defense (DOD), is seeking an Associate Software Engineer to be part of our Warfare Systems team and based out of our Arlington, VA and Mount Laurel, NJ location.
The Associate Software Engineer is responsible for designing, developing, and integrating software solutions across IDT’s Warfare Systems business area. The primary role of the Software Engineer is to build high-quality, innovative, and fully performing software which integrates with other system components. The Software Engineer will be working with various Warfare Systems customers to gather user requirements, defining system functionality, and writing code in various languages, like Java, C++, and Python. You will work with other software engineers, systems engineers, integration engineers, and subject matter experts to deliver robust technical solutions.
Clearance & Location Requirements:
  • All applicants must be able to obtain/maintain an active Secret U.S. Security Clearance.
  • This is an on-site position. Requiring at least 5 days in office, based out of our Arlington, VA and Mount Laurel, VA location.
 
What You Will Do: 
  • Engineers Solutions: Design, develop, document, and test backend software components and algorithms using modern programming languages such as C++, Python, Java, or C#. Apply appropriate data structures, modular design principles, and performance optimization techniques to deliver scalable, maintainable solutions.
  • Scopes Requirements: Analyze and interpret system and software requirements to ensure clarity, feasibility, and traceability. Collaborate with engineers and stakeholders to translate high-level mission and system needs into functional backend implementations.
  • Integrates Systems: Integrate software components into complex development environments, ensuring interoperability across distributed systems, APIs, databases, and networking layers within DoD software ecosystems.
  • Assures Quality: Apply secure coding practices and established engineering standards related to security, performance, and reliability. Participate in peer reviews of architecture designs, system requirements, and implemented code to ensure technical rigor and mission alignment.
  • Verification & Testing: Model, implement, and test algorithms and backend services using unit and interface testing frameworks. Validate system functionality, edge cases, and performance constraints across development and integration environments.
  • Manages Risk & Security: Identify potential technical and cybersecurity risks within software implementations. Apply defensive programming, input validation, and system-level safeguards to harden software against vulnerabilities and operational threats.
  • Leverages AI Responsibly: Utilize AI coding assistants to support code generation, refactoring, debugging, and root-cause analysis while critically reviewing outputs to ensure correctness, security, and adherence to engineering standards.
  • Collaborates Across Teams: Work within small, cross-site teams of software and systems engineers. Communicate technical concepts clearly and collaborate with Program Managers and Chief Engineers to document, manage, and evolve system and software requirements.
  • Delivers Results in Dynamic Environments: Manage multiple concurrent assignments, adapt to changing priorities, and contribute to meeting program milestones while maintaining high standards of technical excellence and accountability.
 
Who You Are (Required):
  • Bachelor’s Degree in Software Engineering, Computer Science, Computer Engineering, Electrical Engineering, Data Science, Cyber Security, Mathematics, Aeronautical Engineering, or equivalent full-time professional experience.
  • 0–2+ years of full-time professional experience in backend software development or related technical roles (internship experience applicable).
  • Ability to travel up to 15% of the time as needed.
  • Familiarity with the software development lifecycle (requirements through deployment).
  • Proficiency in at least one modern backend language (e.g., Python, Java, C++, C#).
  • Ability to design, develop, and analyze algorithms and backend software systems.
  • Understanding of Windows and Linux file systems.
  • Experience using version control systems (e.g., Git).
  • Understanding of APIs (REST/gRPC) and modular code design principles.
  • Familiarity with SQL and relational databases (e.g., Postgres).
  • Familiarity with networking fundamentals and protocols (e.g., TCP/IP, UDP, CORBA, DDS).
  • Ability to review, critique, and harden AI-generated code.
  • Ability to manage multiple concurrent assignments and adjust priorities as needed.
  • Strong analytical thinking, problem-solving skills, and technical communication abilities.
 
What Makes You Stand Out
  • Experience with cloud computing, virtualization, or containerization technologies.
  • Familiarity with cloud infrastructure platforms (e.g., Azure, AWS, GCP).
  • Experience with big data technologies (e.g., Hadoop, Spark, Kafka, Cassandra).
  • Demonstrated experience using AI coding assistants (e.g., GitHub Copilot, ChatGPT, Claude, Cursor, Codeium) for code generation, optimization, debugging, and iterative improvement.
  • Ability to write effective prompts and iterate with AI tools to enhance performance and code quality.
  • Understanding of AI limitations, hallucinations, and validation techniques.
  • Experience with unit testing and interface testing frameworks.
  • Exposure to complex DoD or defense-related software systems.
 
If you see yourself reflected in this role and are excited about the impact you could make, we encourage you to apply! If you know someone who may be a great fit, please feel free to share this opportunity with your network.
 
Pay Range*: $72,000 - $114,450
*Pursuant to New Jersey Senate Bill 2310 IDT is required to disclose the “pay scale” or “pay range” associated with a job posting. Notably, however, this amount may not be reflective of actual compensation that may be earned as pay is dependent on a candidate’s experience, skills, and education. The posted range does not include bonuses, commissions, tips, or other benefits. Click here for additional information about Senate Bill 2310. IDT is often looking to place multiple candidates at various levels. Therefore, more than one pay range has been included, commensurate with experience.
This amount may not be reflective of actual compensation that may be earned as pay is dependent on a candidate’s experience, skills, and education. The posted range does not include bonuses, commissions, tips, or other benefits. IDT is often looking to place multiple candidates at various levels. Therefore, more than one pay range has been included, commensurate with experience. 
About Innovative Defense Technologies (IDT)
Leveraging advanced software automation, model-based systems engineering (MBSE), and AI-driven capabilities, IDT accelerates capability development, enhances operational readiness, and reduces lifecycle costs for the Department of Defense. We are dedicated to transforming defense systems through innovation, efficiency, and mission-critical results.
 
At IDT, our employees are developing advanced mission-critical outcomes by consistently delivering high-quality results, fostering innovation, applying rigorous problem-solving, and communicating effectively across multifaceted teams and stakeholders. Grounded in these competencies, IDT translates complex customer and product requirements into robust software solutions.
 
Why Work at Innovative Defense Technologies (IDT)
IDT is a growing company with a vibrant, entrepreneurial culture. We are headquartered in Arlington, VA with additional offices in Fall River, MA; Mount Laurel, NJ; and San Diego, CA. At each location, our employees work together in a modern, snack-filled, and social office space, designing innovative solutions for our defense industry customers. We offer employees competitive pay and benefits including:
  • Generous benefits package
  • Competitive PTO
  • Paid holidays
  • 401(k) with immediate vesting and matching
  • 9/80 optional schedule (2nd and 4th Friday off every month)
  • Tuition Assistance Reimbursement Program
  • Professional Development Resources
  • Pre-Tax Commuter Benefits
  • Organization-Wide Monthly Tech Connect Events
  • Annual Employee Recognition Awards
  • Regular Social Events and Catered Lunches
 
EEO Statement:
IDT is an Equal Opportunity employer.