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Java Developer Volunteer Jobs in Illinois (NOW HIRING)

Eliassen Group

Senior Software Engineer

Chicago, IL · On-site

$65 - $75/hr

You will work across Java, Python, Spark, TypeScript, JavaScript, Angular, AWS services, event ... Understanding of CI/CD and DevOps using Jenkins, GitHub/GitLab, Bitbucket, GoCD, and automated ...

Eliassen Group

Senior Software Engineer

Chicago, IL · On-site

$65 - $75/hr

You will work across Java, Python, Spark, TypeScript, JavaScript, Angular, AWS services, event ... Understanding of CI/CD and DevOps using Jenkins, GitHub/GitLab, Bitbucket, GoCD, and automated ...

Caterpillar

Senior Software Engineer

Chicago, IL · On-site

$112K - $183K/yr

Design, develop, test, and maintain backend RESTful APIs and microservices using Java, Spring Boot ... Voluntary Benefits and Employee Discounts* * Career Development* * Incentive bonus* * Disability ...

Caterpillar

Software Engineer

Chicago, IL · On-site

$97K - $158K/yr

Develop, test, and maintain backend RESTful APIs using Java, Spring Boot, and AWS cloud services ... Voluntary Benefits and Employee Discounts* * Career Development* * Incentive bonus* * Disability ...

tastytrade

Senior Site Reliability Engineer

Chicago, IL · On-site

$180K - $200K/yr

Production-quality coding experience in Ruby and/or Java, plus Python for automation. * A track ... Two Paid Volunteer Days Off * Daily catered lunch when in the office * Full kitchen with snacks and ...

tastylive

Senior Site Reliability Engineer

Chicago, IL · On-site

$180K - $200K/yr

Production-quality coding experience in Ruby and/or Java, plus Python for automation. * A track ... Two Paid Volunteer Days Off * Daily catered lunch when in the office * Full kitchen with snacks and ...

tastylive

Senior Site Reliability Engineer

Chicago, IL · Hybrid

$180K - $200K/yr

Production-quality coding experience in Ruby and/or Java, plus Python for automation. * A track ... Two Paid Volunteer Days Off * Daily catered lunch when in the office * Full kitchen with snacks and ...

tastytrade

Senior Site Reliability Engineer

Chicago, IL · Hybrid

$180K - $200K/yr

Production-quality coding experience in Ruby and/or Java, plus Python for automation. * A track ... Two Paid Volunteer Days Off * Daily catered lunch when in the office * Full kitchen with snacks and ...

TEKsystems

AI Machine Learning Engineer

Bloomington, IL · Remote

$50 - $70/hr

... Java APIs. This person will be mentoring and training on the AI strategy in this area for all of ... developer tooling (e.g., VS Code extensions, CLI tools) • Strong problem-solving skills and ...

SEI Investments

Software Engineer II

Chicago, IL · Hybrid

$105K - $115K/yr

Demonstrated experience with the following: .Net or Java, JavaScript/TypeScript, SASS, HTML ... We offer our employees paid parental leave, back-up childcare arrangements, paid volunteer days ...

SEI Investments

Software Engineer II

Chicago, IL · On-site

$105K - $115K/yr

Demonstrated experience with the following: .Net or Java, JavaScript/TypeScript, SASS, HTML ... We offer our employees paid parental leave, back-up childcare arrangements, paid volunteer days ...

TransUnion

Directors, Software Engineering

Chicago, IL · On-site

$173K - $253K/yr

... in C and C++, Java, SOAP, JSON, Google Protocol Buffer, Shell Scripting, GIT, Mercurial ... Lean DevOps; algorithms, data structures. Job Requirements Master's degree in Computer Science ...

Supernova Technology

Senior Software Engineer

Chicago, IL · On-site

$140K - $160K/yr

... Java and Python. * Design, build, and maintain robust ETL/data integration pipelines to support ... Champion the use of modern DevOps tools, including Docker, to support efficient development and ...

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Showing results 21-40

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.

Senior Software Engineer

Eliassen Group

Chicago, IL • On-site

$65 - $75/hr

Other

Medical, Dental, Vision, Life, Retirement

Posted 27 days ago

Job description

Description:

Hybrid At least 2 days per week in office in Chicago, IL

Our client seeks a Senior Software Engineer for the CDP team to drive design, delivery, technical strategy, and execution for cloud-native data platforms. You will define engineering standards, mentor engineers, and ensure the platform scales securely and reliably. You will work across Java, Python, Spark, TypeScript, JavaScript, Angular, AWS services, event-driven architectures, and SQL/NoSQL databases to deliver performant, resilient solutions aligned with business objectives.

We can facilitate w2 and corp-to-corp consultants. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate: $65.00 to $75.00/hr. w2

Responsibilities:
  • Deliver large-scale cloud-native data platforms on AWS leveraging REST APIs, microservices, and event-driven applications to build scalable and resilient systems.
  • Work hands-on across the stack including Java, Python, Spark, TypeScript, JavaScript, Angular, AWS services, event-driven architectures, and SQL/NoSQL databases.
  • Drive optimization for performance, scalability, reliability, security, governance, and cost efficiency.
  • Collaborate with global engineering, product management, architecture, and business stakeholders to align solutions with strategic objectives.
  • Own the end-to-end SDLC including requirements, design, development, deployment, observability, and documentation.
Experience Requirements:
  • 5-8 years of software engineering with expertise in scalable UX-driven applications and distributed systems.
  • Proven design and build experience with REST APIs, microservices, Kubernetes, and distributed systems.
  • Experience in Data Warehousing, Data Lakes, Delta Lake, and modern big data ecosystems.
  • Hands-on in Python, Java, Angular with strong OOP and functional programming skills.
  • Experience with PySpark and Apache Spark for high-performance distributed data processing.
  • Depth in microservices with Kubernetes for eventing and serving.
  • Experience with AWS services such as S3, Lambda, API Gateway, and EventBridge.
  • Strong experience with Kafka, SNS, SQS, and databases including PostgreSQL, SQL Server, Aurora, DynamoDB, MongoDB, and Redis.
  • Hands-on with IaC tools such as Terraform and Ansible.
  • Understanding of CI/CD and DevOps using Jenkins, GitHub/GitLab, Bitbucket, GoCD, and automated pipelines.
  • Experience implementing unit, integration, and regression testing with best practices.
  • Strong analytical skills to diagnose and solve complex technical problems.
  • Exposure to Generative AI technologies including LLMs, RAG, and agentic systems.
  • Nice to have: PySpark with Databricks, Azure and/or GCP experience, and data platforms in privacy-safe CDP or MarTech environments.
Education Requirements:
  • B.E./B.Tech/M.Tech/MCA in Computer Science, Information Technology, or a related field.
Recruitment Transparency Notice
 
Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team (noreply@eliassen.com, 781-808-2924) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group’s use of these tools, including AI tools, as part of the application and hiring process.
 

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.

If you have any indication of fraudulent activity, please contact fraud@eliassen.com.

 
About Eliassen Group:
 
Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.
 
Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.
 
Don’t miss out on our referral program! If we hire a candidate that you refer us to then you can be eligible for a $1,000 referral check!
 
Eliassen Group logo

About Eliassen Group

Sourced by ZipRecruiter

Eliassen Group provides strategic consulting and talent solutions to drive our clients' innovation and business results. Our purpose is to positively impact the lives of our employees, clients, consultants, and the communities in which we operate. Leveraging over 30 years of success, our expertise in talent solutions, life sciences consulting, Agile consulting, cloud services, risk management, business optimization, and managed services enables us to partner with our clients to execute their business strategy and scale effectively. Headquartered in Reading, MA, and with offices from coast to coast, Eliassen Group offers local community presence and deep networks, as well as national reach.

Industry

It services

Company size

5,001 - 10,000 Employees

Headquarters location

Reading, MA, US

Year founded

1989

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