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Java Junior Jobs in Illinois (NOW HIRING)

TransMarket Group

Junior Algorithmic Trader

Chicago, IL

$69K - $89K/yr

As a Junior Algorithmic Trader, you will have the opportunity to experience relative value ... Proficiency and experience in object-oriented programming languages, C++, Python and/or Java ...

Mojo Trek

Lead Java Software Engineer

Chicago, IL · On-site

$70 - $80/hr

Mentors junior developers. Communicates with end users and internal customers to help direct ... Technical Skills Strong Java 17+. Backend development is a must. Spring Boot framework. Message ...

Atria Group LLC

Junior Developer

Barrington, IL · On-site

$66K - $86K/yr

Minimum 2 to 3 years of experience in software development using Java/J2EE technologies, Spring ... As a junior developer and support engineer, this role would be primarily customer facing. The ...

TransMarket Group

Junior Algorithmic Trader

Chicago, IL

$69K - $89K/yr

As a Junior Algorithmic Trader, you will have the opportunity to experience relative value ... Proficiency and experience in object-oriented programming languages, C++, Python and/or Java ...

TransMarket Group

Junior Algorithmic Trader

Chicago, IL · On-site

$69K - $89K/yr

As a Junior Algorithmic Trader, you will have the opportunity to experience relative value ... Proficiency and experience in object-oriented programming languages, C++, Python and/or Java ...

ApTask

Java Developer with Camunda

Chicago, IL · On-site

They are seeking a Java Developer with expertise in Camunda to collaborate with global teams on ... and support junior team members in Camunda best practices and development techniques. • ...

AbbVie

Junior Application Security Engineer

North Chicago, IL · On-site

$56.50 - $75.50/hr

Java, Node.js) * Experience integrating security testing into CICD pipelines * Knowledge of ... Experience coaching and supporting the development of junior engineers Preferred: * Experience ...

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Java Junior information

What is a Java Junior?

Java Junior developers are entry-level software engineers who specialize in programming using the Java language. They typically have a foundational understanding of Java syntax, object-oriented programming concepts, and basic software development practices. Java Juniors often assist with coding, debugging, and testing under the supervision of more experienced developers, while continuously learning and building their technical skills. Their responsibilities may also include maintaining existing applications and writing simple features as part of a development team.

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

To thrive as a Java Junior, you need a solid understanding of Java programming, object-oriented principles, and a relevant degree or coursework in computer science. Familiarity with development tools like Eclipse or IntelliJ IDEA, version control systems (such as Git), and basic knowledge of databases are typically expected. Strong problem-solving abilities, eagerness to learn, and good communication skills help juniors excel in collaborative and fast-paced environments. These skills enable efficient coding, effective teamwork, and smooth adaptation to evolving project requirements.

What are some typical challenges a Java Junior might face when starting out, and how can they overcome them?

As a Java Junior, you may encounter challenges like understanding complex codebases, adapting to agile development practices, and debugging unfamiliar issues. It's common to feel overwhelmed at first, but asking questions, participating in code reviews, and pairing with more experienced developers can accelerate your learning. Regularly practicing coding, studying documentation, and using collaboration tools will also help you quickly become a productive member of the team.

What is the difference between Java Junior vs Java Developer?

AspectJava JuniorJava Developer
Required Experience0-2 years2+ years
CertificationsOptional, entry-level certificationsOptional, advanced certifications
Work EnvironmentTraining, mentorship-focusedProject-driven, independent
ResponsibilitiesLearning, basic coding tasksDesign, develop, maintain Java applications

Java Junior roles are entry-level positions focused on learning and supporting Java projects, often requiring minimal experience. Java Developers have more experience, handle complex tasks, and contribute to project design and implementation. The transition from Java Junior to Java Developer involves gaining skills, experience, and certifications over time.

What are the most commonly searched types of Java jobs in Illinois?

The most popular types of Java jobs in Illinois are:

What cities in Illinois are hiring for Java Junior jobs?

Cities in Illinois with the most Java Junior job openings:

Java Junior jobs near you
Infographic showing various Java Junior job openings in Illinois as of August 2026, with employment types broken down into 89% Full Time, 2% Part Time, and 9% Contract. Highlights an 82% Physical, 6% Hybrid, and 12% Remote job distribution.

Junior Algorithmic Trader

TransMarket Group

Chicago, IL

$69K - $89K/yr

Full-time

Posted 15 days ago

Job description

Description

Our Algorithmic Traders use their expert understanding of the financial markets and market microstructure to develop relative value arbitrage trading software and build and improve trading strategies. As a Junior Algorithmic Trader, you will have the opportunity to experience relative value arbitrage trading paired with innovative software. You will partner with Senior Traders to assist and learn all facets of automated trading. From researching and analyzing high-frequency tick data and trading performance, to building mathematical models and performing time series analysis, you will experience a deep dive into real-time trading and gain exposure to build your expertise. The ideal candidate is intellectually curious, technically analytical, and has the desire to learn and apply programming skills in a fast-paced environment (Python, C++). 

Responsibilities

  • Work with Senior Algorithmic Traders to assist and learn all facets of automated trading
  • Develop expertise in market microstructure, tick data, and automated trading systems
  • Learn and master object-oriented programming languages (C++ and Python)
  • Build and maintain trading quantitative model tools and analytics
  • Develop, code, maintain and support production quality automated trading softwares and strategies
  • Improve strategies and trade execution by performing post trade analyses and developing prediction models

Requirements

  • Pursuing a Bachelor's, Master's, or Doctorate in a technical field such as but not limited to STEM or Finance with a graduation date between December 2026 and Spring 2027 or 1-2 years pertinent industry experience 
  • Required courses: Data structures, Probability, Statistics and Linear Algebra
  • Minimum major GPA of 3.5/4 or equivalent scale
  • Proficiency and experience in object-oriented programming languages, C++, Python and/or Java preferred 
  • Proficiency and experience in Linux scripting are a plus
  • Demonstrated passion for markets, finance, and trading such as, but not limited to personal trading, participation in trading competitions, attendance at firm discover days, industry related student groups or clubs and/or prior internship experience preferred 
  • Project or internship experience in data analysis, quantitative modeling and/or machine learning
  • Passion for math and software applied to markets and trading
  • Strong understanding of computing, math, probability, statistics, and finance
  • Strong work ethic and willingness to do what it takes to get the job done
  • Excellent verbal and written communication skills
  • Ability to work within a team in a fast-paced environment
  • This position requires physical presence and is onsite at our office in Chicago, IL

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