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Java Developer Volunteer Jobs in Illinois (NOW HIRING)

Caterpillar

Lead Software Engineer

Chicago, IL · On-site

$128K - $208K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Lead the design and development of enterprise-scale REST APIs and microservices using Java, Spring ... Hands-on experience building and maintaining CI/CD pipelines using Azure DevOps, Jenkins, GoCD, or ...

Pampered Chef LTD

Senior Software Engineer

Addison, IL · On-site

$125K - $135K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Backend: Node.js, Java, REST APIs * Eventing: Kafka * Cloud: AWS (EC2, S3, CloudFormation, Lambda ... Additional voluntary benefits * 401k match * Flex PTO * Paid Parental Leave * 30%+ discount on ...

Supernova Technology

Junior Software Engineer

Chicago, IL · On-site

$80K - $100K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

This is the perfect opportunity for a passionate software developer to get his or her foot in the ... Java, C/C++, and JavaScript. Python is a plus * Hands-on practice on Java Spring Framework and ...

Morningstar, Inc.

Senior Software Engineer

Chicago, IL · On-site

$153K/yr

  • Medical

  • Dental

  • Life

  • Retirement

Object-oriented programming in Python/Java, including OOP design patterns and UML architecture ... Paid volunteering days * 15+ Employee Resource & Affinity Groups Morningstar's hybrid work ...

Morningstar

Senior Software Engineer

Chicago, IL · On-site +1

$153K/yr

  • Medical

  • Dental

  • Life

  • Retirement

Object-oriented programming in Python/Java, including OOP design patterns and UML architecture ... Paid volunteering days * 15+ Employee Resource & Affinity Groups Morningstar's hybrid work ...

Limited Legal Entity

Senior Software Engineer

Chicago, IL · On-site +1

$153K/yr

  • Medical

  • Dental

  • Life

  • Retirement

Object-oriented programming in Python/Java, including OOP design patterns and UML architecture ... Paid volunteering days * 15+ Employee Resource & Affinity Groups Morningstar's hybrid work ...

Pampered Chef LTD

Software Architect

Addison, IL · On-site

$140K - $155K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Our engineering teams build primarily in a modern, composable architecture while continuing to ... Backend: Node.js, Java, REST APIs * Eventing: Kafka * Cloud: AWS (EC2, S3, CloudFormation, Lambda)

Caterpillar Brazil

Senior Software Engineer

Chicago, IL · On-site

$113 - $183/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Experience software development experience using Java 17 or higher and SpringBoot RESTful API ... Deploying software using CI/CD tools such as Azure Devops, Jenkins, GoCD, etc.* Working within an ...

Caterpillar

Senior Software Engineer

Chicago, IL · On-site

$112K - $183K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Experience software development experience using Java 17 or higher and SpringBoot RESTful API ... Deploying software using CI/CD tools such as Azure Devops, Jenkins, GoCD, etc. * Working within an ...

Caterpillar

Senior Software Engineer

Chicago, IL · On-site

$112K - $183K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Experience software development experience using Java 17 or higher and SpringBoot RESTful API ... Deploying software using CI/CD tools such as Azure Devops, Jenkins, GoCD, etc. * Working within an ...

Yum! Brands

Sr. QA Engineer II

Chicago, IL · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Proficiency in Kotlin or Java for Android development. * Solid experience with Node.js and ... for volunteer time each calendar year. To learn more about working at Yum! - Click here. At Yum ...

Yum Brands

Sr. QA Engineer II

Chicago, IL · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Proficiency in Kotlin or Java for Android development. * Solid experience with Node.js and ... for volunteer time each calendar year. To learn more about working at Yum! - Click here. At Yum ...

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Showing results 41-60

All JobsJava Developer Volunteer JobsJava Developer Volunteer Jobs in Illinois

Java Developer Volunteer information

What is a Java Developer Volunteer?

A Java Developer Volunteer role involves contributing to software development projects without financial compensation. Volunteers typically assist in coding, debugging, testing, and maintaining Java-based applications for nonprofits, open-source projects, or startups. This role helps developers gain experience, build portfolios, and support meaningful initiatives while collaborating with teams.

What are the key skills and qualifications needed to thrive as a Java Developer Volunteer?

To excel as a Java Developer Volunteer, you should have a solid grasp of Java programming, object-oriented design, and version control systems, often demonstrated through coursework, certifications, or hands-on project experience. Familiarity with tools like Eclipse or IntelliJ IDEA, build systems (Maven or Gradle), and collaborative platforms such as GitHub is commonly expected. Strong communication, teamwork, and a willingness to learn set exceptional volunteers apart. These skills and qualities ensure you can contribute effectively to projects, adapt to dynamic team needs, and make the most meaningful impact in volunteer settings.

What types of projects or tasks can I expect to work on as a Java Developer Volunteer?

As a Java Developer Volunteer, you might work on a range of projects, such as developing new software features, fixing bugs, writing unit tests, or helping maintain existing Java applications for nonprofits or community organizations. You could also assist in documentation, code reviews, or collaborating on open-source initiatives, depending on the organization's needs. These roles often provide exposure to agile development practices and teamwork with other engineers, designers, and project managers. Volunteering in this capacity not only helps worthwhile causes but also allows you to expand your portfolio and gain practical experience with real-world applications.

Is Java developer still in demand?

Java developers remain in high demand due to the language's widespread use in enterprise applications, Android development, and backend systems. Skills in frameworks like Spring and knowledge of cloud platforms can enhance job prospects in this field.

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

The most popular types of Java Developer jobs in Illinois are:

What are popular job titles related to Java Developer Volunteer jobs in Illinois?

For Java Developer Volunteer jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Java Developer Volunteer jobs in Illinois look for?

The top searched job categories for Java Developer Volunteer jobs in Illinois are:

What cities in Illinois are hiring for Java Developer Volunteer jobs?

Cities in Illinois with the most Java Developer Volunteer job openings:

Java Developer Volunteer jobs near you
Infographic showing various Java Developer Volunteer job openings in Illinois as of August 2026, with employment types broken down into 86% Full Time, and 14% Part Time. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution.

Lead Software Engineer

Caterpillar

Chicago, IL • On-site

$128K - $208K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 20 days ago

Caterpillar Inc. rating

7.4

Company rating: 7.4 out of 10

Based on 480 frontline employees who took The Breakroom Quiz

287th of 490 rated machine equipment manufacturers

Job description

Career Area:
Technology, Digital and Data
Job Description:
Your Work Shapes the World at Caterpillar Inc.
When you join Caterpillar, you're joining a global team who cares not just about the work we do - but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here - we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it.
JOB PURPOSE:
Join Cat Digital Platform and help build the technology that powers Caterpillar's digital future. Our platform fuels the secure flow of data, insights, and services connecting customers, dealers, machines, and applications worldwide. As a Lead Software Engineer, you will provide technical leadership and drive the delivery of scalable, secure, and customer-focused cloud solutions.
JOB DUTIES:
  • Lead the design and development of enterprise-scale REST APIs and microservices using Java, Spring Boot, and AWS cloud services.
  • Build API-first solutions, define service contracts, payload schemas, and OpenAPI/Swagger specifications.
  • Guide engineers in building secure and scalable service integrations using OAuth 2.0, JWT, and enterprise authorization models.
  • Translate business requirements into scalable technical designs, user stories, and implementation plans.
  • Provide technical leadership for the initiatives by driving design reviews, design decisions, code reviews, and engineering best practices.
  • Collaborate with product owners, UI development teams, architects, and partner teams to ensure successful delivery of customer-focused solutions.
  • Lead the adoption and continuous improvement of engineering best practices for reliability, scalability, observability, security, and maintainability.
  • Drive quality engineering through automated testing, performance testing, operational excellence, and continuous improvement.
  • Lead troubleshooting and resolution of complex production issues.
  • Own the end-to-end software lifecycle, including deployment, monitoring, support, documentation, and operational runbooks.

What you will have:
  • Software Development: Knowledge of software development tools and activities; ability to produce software products or systems in line with product requirements.
  • Software Product Design/Architecture: Knowledge of software product design; ability to convert market requirements into the software product design.
  • Decision Making and Critical Thinking: Knowledge of the decision-making process and associated tools and techniques; ability to accurately analyze situations and reach productive decisions based on informed judgment.
  • Effective Communications: Understanding of effective communication concepts, tools and techniques; ability to effectively transmit, receive, and accurately interpret ideas, information, and needs through the application of appropriate communication behaviors.

Top candidates will also have:
  • Extensive experience developing RESTful APIs and microservices using Java 21+ and Spring Boot, including API management platforms such as Apigee.
  • Experience designing, deploying, and operating applications in public cloud environments such as AWS, Azure, or GCP.
  • Proven ability to own the end-to-end software lifecycle, including writing comprehensive automated tests (unit, integration, and end-to-end) using frameworks like JUnit and Mockito.
  • Experience designing and implementing Event-Driven Architectures using message streaming solutions (eg: AWS Kinesis, AWS SQS, AWS SNS, Apache Kafka, RabbitMQ, Apache ActiveMQ, Azure Event Hub)
  • Strong knowledge of relational, NoSQL, caching, search, and vector database technologies, including PostgreSQL, MySQL, Oracle, Aurora, MongoDB, DynamoDB, Cassandra, Elasticsearch, and Redis.
  • Hands-on experience building and maintaining CI/CD pipelines using Azure DevOps, Jenkins, GoCD, or similar tools.
  • Familiarity with leveraging AI-assisted coding companions, such as GitHub Copilot or Cursor, to accelerate the software development lifecycle.
  • Demonstrated success working within an Agile development framework, ideally Scrum.

Additional Details:
  • This position requires the candidate to be based in Chicago, IL
  • Relocation assistance is not available for this position
  • Visa sponsorship is not available for this position

Summary Pay Range:
$128,470.00 - $208,770.00
Compensation and benefits offered may vary depending on multiple individualized factors, job level, market location, job-related knowledge, skills, individual performance and experience. Please note that salary is only one component of total compensation at Caterpillar.
Benefits:
Subject to plan eligibility, terms, and guidelines. This is a summary list of benefits.
  • Medical, dental, and vision benefits*
  • Paid time off plan (Vacation, Holidays, Volunteer, etc.)*
  • 401(k) savings plans*
  • Health Savings Account (HSA)*
  • Flexible Spending Accounts (FSAs)*
  • Health Lifestyle Programs*
  • Employee Assistance Program*
  • Voluntary Benefits and Employee Discounts*
  • Career Development*
  • Incentive bonus*
  • Disability benefits
  • Life Insurance
  • Parental leave
  • Adoption benefits
  • Tuition Reimbursement

* These benefits also apply to part-time employees
Visa Sponsorship is not available for this position.
Posting Dates:
August 12, 2026 - August 23, 2026
Any offer of employment is conditioned upon the successful completion of a drug screen.
Caterpillar is an Equal Opportunity Employer, Including Veterans and Individuals with Disabilities. Qualified applicants of any age are encouraged to apply.
Not ready to apply? Join our Talent Community.

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