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Java Developer Jobs in DeKalb, IL (NOW HIRING)

Lorven Technologies

Software Developer

Rockford, IL · On-site

Our client is looking Software Developer for Fulltime project in Rockford, Illinois (Onsite) Below is the detail requirement. Title: Software Developer Location: Rockford, Illinois Experience: 5 to ...

Belcan

Software Engineer

Rockford, IL

$83K - $104K/yr

A Software Engineer job in Rockford, IL is currently available through Belcan at one of our key aerospace clients. We are seeking a highly motivated Software Engineer with a focus on Linux Simulation ...

Epic

Software Engineer

Rockford, IL · On-site

The Software Engineer role involves developing software that directly impacts the lives of millions of patients, utilizing modern methodologies and technologies to enhance healthcare delivery.

Epic

Software Engineer

Aurora, IL · On-site

The Software Engineer role involves developing software that directly impacts the lives of millions of patients, utilizing modern methodologies and technologies to enhance healthcare delivery.

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All JobsJava Developer JobsJava Developer Jobs in DeKalb, IL

Java Developer information

See DeKalb, IL salary details

$15

$55

$75

How much do java developer jobs pay per hour?

As of Jun 25, 2026, the average hourly pay for java developer in DeKalb, IL is $55.65, according to ZipRecruiter salary data. Most workers in this role earn between $48.12 and $62.31 per hour, depending on experience, location, and employer.

Is Java developer still in demand?

Java developers remain in high demand due to the widespread use of Java in enterprise applications, Android development, and backend systems. Skills in frameworks like Spring and knowledge of cloud environments enhance job prospects, and Java's stability ensures ongoing opportunities in the software industry.

What Do Java Developers Do?

Java developers create dynamic computer applications and websites using the Java computer programming language. The Java language integrates with other programming languages and infrastructures to build robust business applications and software for a wide range of industries, from finance and healthcare to content management and social media. Java developers may be involved in all stages of application development, from conception and design to testing, production, and ongoing maintenance. The goal is to provide efficient solutions for business needs.

Is Java outdated in 2026?

Java remains a widely used programming language for Java developers in 2026, especially in enterprise applications, Android development, and backend systems. It continues to evolve with regular updates, maintaining its relevance in the software industry. Proficiency in Java, along with frameworks like Spring and tools such as Maven, remains valuable for job seekers in this field.

Is AI replacing Java developers?

AI is automating certain coding tasks and improving software development processes, but Java developers are still essential for designing, implementing, and maintaining complex applications. Skills in Java programming, problem-solving, and understanding AI tools enhance a developer's value in the evolving tech landscape.

What is the difference between Java Developer vs Software Engineer?

AspectJava DeveloperSoftware Engineer
Required CredentialsBachelor's in Computer Science or related, Java certificationsBachelor's in Computer Science or related, various certifications
Work EnvironmentDevelops Java-based applications, often in teamsDesigns and develops software solutions, may include Java projects
Employer & Industry UsageTech companies, finance, e-commerceBroad industry, including tech, finance, healthcare

Java Developers focus specifically on Java programming, while Software Engineers have a broader role in designing and developing software solutions across multiple languages. Both roles often require similar educational backgrounds and certifications, but Java Developers typically work more directly with Java-based projects, whereas Software Engineers may handle diverse technologies.

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

To thrive as a Java Developer, you need strong proficiency in Java programming, object-oriented design, and a solid understanding of software development principles, usually supported by a degree in computer science or related fields. Familiarity with frameworks such as Spring or Hibernate, experience with version control systems like Git, and sometimes certification like Oracle Certified Professional Java Programmer (OCPJP) are commonly required. Effective problem-solving, teamwork, and attention to detail are crucial soft skills in this role. These skills ensure robust, maintainable, and scalable software solutions that meet project requirements and business goals.

What are Java Developers?

Java Developers are software professionals who specialize in designing, developing, and maintaining applications using the Java programming language. They work on a variety of projects, including web, desktop, and mobile applications, as well as enterprise-level systems. Java Developers are responsible for writing clean and efficient code, testing and debugging programs, and collaborating with other team members to deliver robust software solutions. Their expertise in Java and related technologies is crucial for building scalable and secure applications.

What are some common challenges Java Developers face when working on large-scale enterprise applications?

Java Developers working on large-scale enterprise applications often encounter challenges such as managing complex codebases, ensuring efficient performance, and integrating with legacy systems. Collaborating with cross-functional teams is crucial, as these projects typically involve multiple developers, QA engineers, and business analysts. Additionally, maintaining code quality and adhering to best practices while meeting tight deadlines can be demanding. Staying up-to-date with evolving frameworks and tools also plays a key role in overcoming these challenges.

What is the salary of a Java developer?

The salary of a Java developer varies based on experience, location, and skill level, but typically ranges from $70,000 to $120,000 annually in many regions. Entry-level positions may start lower, while experienced developers with expertise in frameworks like Spring or tools like Git can earn higher salaries.
More about Java Developer jobs
What are the most commonly searched types of Java Developer jobs in DeKalb, IL? The most popular types of Java Developer jobs in DeKalb, IL are:
What job categories do people searching Java Developer jobs in DeKalb, IL look for? The top searched job categories for Java Developer jobs in DeKalb, IL are:
What cities near DeKalb, IL are hiring for Java Developer jobs? Cities near DeKalb, IL with the most Java Developer job openings:
Java Developer jobs near you
Infographic showing various Java Developer job openings in DeKalb, IL as of June 2026, with employment types broken down into 88% Full Time, 7% Part Time, and 5% Contract. Highlights an 82% Physical, 4% Hybrid, and 14% Remote job distribution, with an average salary of $115,749 per year, or $55.6 per hour.
Intermediate/Senior Informix & Legacy Systems Developer

Intermediate/Senior Informix & Legacy Systems Developer

RIT Solutions

Batavia, IL • On-site

Other

Posted 8 days ago

Job description

Intermediate/Senior Informix & Legacy Systems Developer

We are seeking a technical specialist with deep expertise in legacy IBM/Informix platforms. This role is critical to supporting and modernizing our legacy infrastructure, specifically focusing on Client-UX and IBM AIX environments. You will be responsible for maintaining mission-critical ERP, supply chain, and warehouse management systems while driving technical performance optimizations.

Key Responsibilities
  • System Modernization & Design: Collaborate with cross-functional teams to design and implement robust solutions that bridge legacy logic with modern requirements (e.g., migrating Informix 4GL to Genero BDL).
  • Legacy Maintenance: Write and optimize clean, maintainable code in Informix 4GL, Genero BDL, and Unix Shell Scripting (Korn, Awk).
  • Technical Troubleshooting: Resolve complex application issues and database performance bottlenecks using utilities like oncheck and set explain.
  • Deployment & Testing: Lead integration, UAT, and performance testing activities to ensure high-quality deployments with minimal business disruption.
  • Support & Documentation: Manage incidents and work orders escalated from the Service Desk, adhering to established SLAs, and maintain comprehensive technical documentation.
Required Technical Skills
  • Primary Languages: Expert-level Informix 4GL, Genero BDL, and SQL.
  • Secondary Languages: Proficiency in Java, Python, or Perl for integration and modern application support.
  • Database Management: Advanced knowledge of IBM Informix Dynamic Server (IDS); familiarity with SQL Server, Oracle, or Snowflake is a plus.
  • Operating Systems: Mastery of Unix-based systems (Client-UX, IBM AIX, Linux) and Windows environments.
  • Integrations: Understanding of EDI (810, 820), XML, and API integration (RESTful/SOAP).
  • Version Control: Hands-on experience with Git, GitHub, or GitLab.
  • Preferred Domain Knowledge: Experience with ERP Supply Chain concepts: Order creation, Pick-Pack-Ship, Invoicing, and Bill of Materials (BOM).
  • Familiarity with Warehouse Management Systems (WMS) and manufacturing workflows.
Role & Project Scope
  • Core Objective: Support and modernize a mission-critical Legacy ERP platform while expediting its integration with Salesforce and e-commerce platforms.
  • Key Responsibilities: Directly manage Informix 4GL development and maintenance. Lead API build-out and integration projects alongside key technical stakeholders. Operate within a Unix/Linux environment.
  • Team Dynamics: Small, lean team consisting of one onsite resource and three offshore members; requires daily coordination with the offshore team.
Candidate Requirements
  • Technical Expertise: Minimum 5 years of experience on the Informix legacy platform (specifically 4GL).
  • Domain Knowledge: Strong business understanding of Supply Chain workflows and operations.
  • Technical Environment: Proficiency in Unix/Linux and API development.
  • Soft Skills: Exceptional communication skills to effectively collaborate with and guide offshore team members.

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