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Intern Java Jobs in Illinois (NOW HIRING)

Optiver

Software Engineer Intern (Chicago)

Chicago, IL · On-site

$60K - $70K/yr

As a Software Engineer Intern, you'll work side-by-side with your mentor and teammates to build ... Proficient in coding languages such as C++, Python, or Java * A student with strong engineering ...

Optiver

Software Engineer Intern (Chicago)

Chicago, IL · On-site

$60K - $70K/yr

As a Software Engineer Intern, you'll work side-by-side with your mentor and teammates to build ... Proficient in coding languages such as C++, Python, or Java * A student with strong engineering ...

Danaher

Software Engineer Internships

Springfield, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Chicago, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Springfield, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Dekalb, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Peoria, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Aurora, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Dekalb, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Peoria, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Edwardsville, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Joliet, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Joliet, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Aurora, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Rockford, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Chicago, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Edwardsville, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

Danaher

Software Engineer Internships

Rockford, IL · On-site

As a Software Engineering Intern at Danaher, you'll work alongside experienced engineers developing ... Writing and debugging code in languages such as C#, Java, Python, or C++ * Participating on an ...

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Intern Java information

What kind of projects and tasks can an Intern Java expect to work on during their internship?

As an Intern Java, you can expect to assist with a variety of tasks such as coding, debugging, and testing Java applications under the guidance of senior developers. You may work on real business projects, contribute to ongoing software development, and participate in code reviews. Interns often collaborate closely with development teams, learning best practices and agile methodologies. This hands-on experience helps you gain practical skills, understand software development cycles, and build a foundation for future growth in the field.

Will AI replace Java devs?

AI is unlikely to fully replace Java developers, as their role involves designing, coding, and maintaining complex software systems that require human judgment and problem-solving skills. AI tools can assist with code generation and testing, but human oversight remains essential for quality and innovation. Java developers who adapt by learning new tools and frameworks will continue to be valuable in the evolving tech environment.

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

AspectIntern JavaJunior Java Developer
Required CredentialsTypically students or recent graduates, some may have basic coursework in JavaEntry-level professionals with some Java coursework or internship experience
Work EnvironmentSupervised, learning-focused, often part-time or temporaryFull-time, collaborative team environment with defined responsibilities
Employer & Industry UsageInternships in tech companies, startups, or IT departmentsSoftware development firms, tech companies, enterprise IT teams

Intern Java roles are primarily learning positions for students or recent graduates gaining initial exposure to Java development. Junior Java Developers are entry-level professionals with some foundational skills, working on real projects within a team. The main difference lies in experience level and responsibilities, with interns focusing on learning and juniors taking on more active development tasks.

Are Java jobs still in demand?

Java developer roles remain in high demand across various industries due to the language's stability, scalability, and widespread use in enterprise applications. Skills in Java, along with knowledge of frameworks like Spring and experience with cloud environments, can enhance job prospects in this field.

What does an Intern Java do?

An Intern Java typically assists in the development, testing, and maintenance of software applications using the Java programming language. They work under the supervision of senior developers or project managers, gaining hands-on experience with coding, debugging, and documentation tasks. Interns may also participate in team meetings, learn about software development processes, and contribute to real-world projects. This role is designed to help students or recent graduates build practical skills and prepare for a professional career in software development.

What does a Java intern do?

A Java intern assists in developing, testing, and maintaining Java-based applications under the supervision of experienced developers. They often work with tools like IDEs, version control systems, and follow coding standards to gain practical experience in software development. The role typically involves writing code, debugging, and learning industry best practices.

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

To thrive as an Intern Java, you need a solid understanding of Java programming, object-oriented principles, and basic software development concepts, typically supported by coursework or personal projects. Familiarity with development tools such as Eclipse or IntelliJ IDEA, version control systems like Git, and basic knowledge of databases is often expected. Strong problem-solving skills, eagerness to learn, and effective communication help interns stand out and adapt quickly in team environments. These skills enable interns to contribute meaningfully, grow technically, and integrate smoothly into real-world software development workflows.

Is Java still useful in 2026?

Java remains a widely used programming language for backend development, enterprise applications, and Android app creation in 2026. Java developers with knowledge of frameworks like Spring and tools such as Maven continue to be in demand, making it a valuable skill for an intern Java role. Staying updated with the latest Java versions and related technologies enhances job prospects.
What are the most commonly searched types of Java jobs in Illinois? The most popular types of Java jobs in Illinois are:
What are popular job titles related to Intern Java jobs in Illinois? For Intern Java jobs in Illinois, the most frequently searched job titles are:
What job categories do people searching Intern Java jobs in Illinois look for? The top searched job categories for Intern Java jobs in Illinois are:
What cities in Illinois are hiring for Intern Java jobs? Cities in Illinois with the most Intern Java job openings:
Intern Java jobs near you
Infographic showing various Intern Java job openings in Illinois as of July 2026, with employment types broken down into 50% Internship, and 50% Part Time. Highlights an 100% In-person job distribution.

Software Engineer Intern (Summer 2027 - Chicago)

Optiver

Chicago, IL • On-site

$80K/yr

Full-time, Temporary, Internship

Posted 6 days ago

New

Job description

As a Software Engineer Intern, you'll work side-by-side with your mentor and teammates to build real-world applications that power a global trading firm. Your projects will be scoped based on your team's real needs - not hypothetical tasks - and your mentor will be fully invested in helping you build high-quality software that's designed to last. You'll contribute to meaningful projects solving trading problems and improving the performance, reliability, and scalability of our systems - and you'll see your code hit production in real time.
Optiver is building with cutting edge AI technology in the most competitive, data rich landscapes in the world: financial markets. That means no two days are the same, and every day brings new, exciting technical challenges to solve.
This opportunity is also available in our Austin office - learn more and apply.
What you'll do:
Our internship is designed for fast thinkers with a critical mindset and a drive to solve tough problems. You'll experience what it's like to be a full-time engineer at a leading trading firm - working on projects that push the limits of performance, efficiency, and real-world impact. Mentored by Optiver engineers, our program gives you the opportunity to:
  • Deep dive into trading fundamentals, from theoretical concepts to financial markets, strategies, AI-enabled tools and cutting-edge technology.
  • Collaborate closely with best-in-class engineers, traders, and business teams to develop, test, and ship your code to production.
  • Tackle complex, real-world problems to enhance your critical thinking and problem-solving skills.
  • Push your limits and accelerate your growth in a fascinating and high-performing environment.

What you'll get:
You'll join a culture of collaboration and excellence, surrounded by curious thinkers and creative problem-solvers. Motivated by a passion for continuous improvement, you'll thrive in a supportive, high-performing environment alongside talented colleagues, collectively tackling some of the toughest challenges in the financial markets.
In addition, you'll receive:
  • The opportunity to work alongside best-in-class professionals from over 40 different countries
  • A highly-competitive internship compensation package
  • Optiver-covered flights, living accommodations, and commuting stipends
  • Extensive office perks, including breakfast, lunch and snacks, regular social events, clubs, sporting leagues and more

Who you are:
  • A student pursuing a bachelor's, master's, or PhD in Computer Science or Computer Engineering
  • On track to graduate between December 2027 to June 2028, with junior standing or higher
  • Passionate for writing clean code, well-architected systems, and continuous improvement
  • Proficient in coding languages such as C++, Python, or Java
  • A student with strong engineering instincts and a solid understanding of computer science fundamentals
  • Driven by an entrepreneurial mindset and curious about how tech powers the financial industry
  • A natural problem-solver with a sharp, analytical approach to tackling challenges
  • A collaborative teammate comfortable working with developers, traders and business teams

Who we are:
Optiver is a leading technology- and research-driven trading firm. Our teams of scientists, engineers, mathematicians, and traders work side by side to develop, test, and scale ideas that shape how we understand and trade global markets. Powered by a global platform built for rapid experimentation and iteration, we combine the scientific rigor of a research institution with the pace of a technology company.
Our differences are our edge. Optiver does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, physical or mental disability, or other legally protected characteristics. Optiver is supportive of US immigration sponsorship for this role.
Optiver has a global application re-apply policy for our intern and graduate roles. If you have completed an online assessment or interviewed for a technology graduate or internship role at any Optiver location in the past 8 months, please note that you are not yet eligible to reapply. We welcome you to re-apply to after the 8-month cool off period.
Below is the expected compensation for this position. This is a good-faith estimate of the base pay scale and sign-on bonus for this position and offers will ultimately be determined based on experience, education, skill set, and performance in the interview process. This position will also be eligible for the benefits listed above.
Base Salary Range
$80,000-$80,000 USD

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