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Volunteer Java Jobs in Wisconsin (NOW HIRING)

WI · On-site

$200 - $250/hr

You have strong skills in core Java and are conversant in the standard library of data structures ... Up to 40 hours each year to use toward volunteer projects you love * Embracing parenthood with a ...

WI · On-site

$125 - $150/hr

Senior Software Engineer ( Sr Java Backend developer) Location: Dallas TX - Hybrid ( In-Office ... A variety of voluntary benefits such as Legal Plans, Accident and Hospital Indemnity, Pet Insurance ...

WI · On-site

$100 - $125/hr

You have strong skills in core Java and are conversant in the standard library of data structures ... Up to 40 hours each year to use toward volunteer projects you love * Embracing parenthood with a ...

WI · On-site

$125 - $150/hr

Develop and maintain software solutions using modern Java enterprise development practices and ... Voluntary benefits include: * Life & AD&D Insurance for employee, spouse, and children * Short-term ...

Software Engineer

Stevens Point, WI · On-site

$100 - $125/hr

Experience with Guidewire, Java and Vue preferred. * Values continuous learning and personal ... volunteer time off and more! You want a positive work/life balance. Our hybrid work model allows ...

IAM UI Engineer (Milwaukee)

Milwaukee, WI · On-site

$102K - $136K/yr

Backend experience with Next.js, Node.js or Java (Spring Boot preferred) * Integrating enterprise ... Volunteer Paid Time off available after 6 months of employment for eligible employees. * We match ...

Security Engineer (AppSec)

Brookfield, WI · On-site

$55.50 - $74.25/hr

... Java, C++, Python). * Familiarity with security frameworks and standards (e.g. OWASP, NIST ... Life Insurance (Basic, Voluntary & AD&D) * Paid Time Off (Vacation, Sick & Public Holidays)

Security Engineer (AppSec)

Milwaukee, WI · On-site +1

$57.75 - $77.25/hr

... Java, C++, Python). * Familiarity with security frameworks and standards (e.g. OWASP, NIST ... Life Insurance (Basic, Voluntary & AD&D) * Paid Time Off (Vacation, Sick & Public Holidays)

Minimum of 7 years of experience in software development using Java and Spring, * with a proven ... A variety of voluntary benefits such as; Legal Plans, Accident and Hospital Indemnity, Pet ...

WI · On-site

$150 - $200/hr

Programming experience in Python, C#.NET, Go, Scala, Java, or similar object‑oriented language ... Voluntary Self-Identification For government reporting purposes, we ask candidates to respond to ...

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Showing results 1-20

Volunteer Java information

What is a Volunteer Java?

A Volunteer Java job is an unpaid role where individuals contribute their Java programming skills to support a project, organization, or community initiative. Volunteers may help with coding, debugging, testing, or improving software applications. These roles are typically found in non-profits, open-source projects, or educational initiatives. It’s a great opportunity to gain hands-on experience, expand your portfolio, and contribute to meaningful projects while improving Java skills.

What kind of projects might I work on as a Volunteer Java developer?

As a Volunteer Java developer, you'll typically work on software projects that support non-profit organizations, educational programs, or open-source initiatives. Projects might include building and maintaining web applications, automating processes for nonprofits, or contributing to digital tools used by community groups. You may collaborate with other volunteers, designers, and project managers in a remote or hybrid team environment. This experience offers the chance to strengthen your technical skills, expand your professional network, and make a positive impact while learning to navigate real-world software development challenges.

What are the key skills and qualifications needed to thrive in the Volunteer Java position, and why are they important?

To thrive as a Volunteer Java developer, you need a solid understanding of Java programming, object-oriented principles, and basic software development practices, often demonstrated through coursework, self-study, or project experience. Familiarity with systems like Git, integrated development environments (IDEs) such as Eclipse or IntelliJ IDEA, and participation in code collaboration platforms like GitHub is advantageous. Excellent communication, teamwork, and time management skills help you contribute effectively to projects and adapt to a volunteer-driven workflow. These skills are crucial for delivering high-quality code, collaborating within diverse teams, and ensuring the success of community-driven or non-profit software initiatives.

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

The most popular types of Java jobs in Wisconsin are:

What cities in Wisconsin are hiring for Volunteer Java jobs?

Cities in Wisconsin with the most Volunteer Java job openings:

Infographic showing various Volunteer Java job openings in Wisconsin as of August 2026, with employment types broken down into 87% Full Time, and 13% Part Time. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution.

Principal Java Engineer - Distributed Systems, Serverless - Elasticsearch

WI • On-site

$200 - $250/hr

Other

Medical, PTO

Posted 21 days ago


Job description

Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The Elastic Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of search and the intelligence of AI to enable everyone to accelerate the results that matter. By taking advantage of all structured and unstructured data — securing and protecting private information more effectively — Elastic’s complete, cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI.

What is The Role:

We are on the lookout for a Principal Software Engineer to join our Elasticsearch - Distributed Systems team and focus on how Elasticsearch provides scale, performance, and resilience, especially in the context of our Serverless offering. You will be tackling deep distributed systems challenges in how nodes in an Elasticsearch cluster communicate, and how data are indexed, allocated, and managed across nodes.

What You Will Be Doing:
  • Leveraging your deep distributed systems expertise to design, build, and operate core pieces of our next-generation Serverless Elasticsearch offering, directly impacting the experience of customers worldwide.
  • Improving Elasticsearch’s components that support concurrent and consistent indexing across multiple machines.
  • Maintaining our cluster coordination system to keep performance high even though nodes come and go from the cluster and data moves around, while maintaining the safety and liveness properties of the system as a whole.
  • Pushing the limits on the number of shards, nodes, and petabytes that Elasticsearch can handle today.
  • Looking into all kinds of issues, including performance or concurrency issues, and proposing solutions.
  • Supporting our support engineers with the harder problems.
  • Owning operational investigations end-to-end, until performance or stability issues are successfully resolved.
What You Bring:
  • You have a deep background in distributed systems and consensus algorithms.
  • You have strong skills in core Java and are conversant in the standard library of data structures and concurrency constructs, as well as newer language features.
  • You have a deep technical proficiency in algorithms.
  • You have experience building large-scale distributed systems, rather than making use of off-the-shelf services.
  • You have experience building and debugging complex features with a broad impact, running on multiple machines.
  • You are able to own projects from beginning to end. This covers both technical design and working with others to develop needed components.
  • You have experience managing projects involving multiple engineers.
  • You have a proven track record of using AI to accelerate development, debug complex systems, and optimize code, while still owning the final outcomes.
  • You possess the ability to collaborate across functions and teams and seamlessly transition between different projects, codebases, or teams based on business priorities.
  • You can work autonomously, drive decisions and results in a distributed team by leveraging asynchronous, direct, and transparent communication.
Bonus Points:
  • Data stores
  • Search, analytics, Lucene
  • Strong knowledge of the JDK
  • Asynchronous event-driven network frameworks such as Netty
Additional Information - We Take Care of Our People:

As a distributed company, diversity drives our identity. Whether you’re looking to launch a new career or grow an existing one, Elastic is the type of company where you can balance great work with great life. Your age is only a number. It doesn’t matter if you’re just out of college or your children are; we need you for what you can do.

We thrive to have parity of benefits across regions, and while regulations differ from place to place, we believe taking care of our people is the right thing to do.

  • Competitive pay based on the work you do here and not your previous salary
  • Health coverage for you and your family in many locations
  • Ability to craft your calendar with flexible locations and schedules for many roles
  • Generous number of vacation days each year
  • Increase your impact - We match up to $2000 (or local currency equivalent) for financial donations and service
  • Up to 40 hours each year to use toward volunteer projects you love
  • Embracing parenthood with a minimum of 16 weeks of parental leave

Security & Privacy Responsibilities: Take ownership of protecting the confidentiality, integrity, and availability of organizational data and systems by following applicable privacy and security policies, standards, and procedures. Ensure that all individual contributions follow Elastic’s Secure Software Development Framework (SSDF). Proactively participate in mandatory role-based training to ensure personal technical execution consistently aligns with the highest standards of data protection, data privacy, and system resilience.

Different people approach problems differently. We need that. Elastic is an equal opportunity employer and is committed to creating an inclusive culture that celebrates different perspectives, experiences, and backgrounds. Qualified applicants will receive consideration for employment without regard to race, ethnicity, color, religion, sex, pregnancy, sexual orientation, gender perception or identity, national origin, age, marital status, protected veteran status, disability status, or any other basis protected by federal, state or local law, ordinance or regulation.

We welcome individuals with disabilities and strive to create an accessible and inclusive experience for all individuals. To request an accommodation during the application or the recruiting process, please email candidate_accessibility@elastic.co. We will reply to your request within 24 business hours of submission.

Applicants have rights under Federal Employment Laws and can view the following posters linked below:

Family and Medical Leave Act (FMLA) Poster

Employee Polygraph Protection Act (EPPA) Poster

Elasticsearch develops and distributes technology and information that is subject to U.S. and other countries’ export controls and licensing requirements for individuals who are located in or are nationals of the following sanctioned countries and regions: Belarus, Cuba, Iran, North Korea, Syria, or Russia, including the Ukrainian territories annexed by Russia (The Crimea region of Ukraine, The Donetsk People's Republic (DNR), The Luhansk People's Republic (LNR), Kherson or Zaporizhzhia). If you are located in or are a national of one of the listed countries or regions, an export license may be required as a condition of your employment in this role. Please note that national origin and/or nationality do not affect eligibility for employment with Elastic.

Please see here for our Privacy Statement.

Compensation for this role is in the form of base salary. This role does not have a variable compensation component.

At Elastic, our compensation philosophy aims to provide fair, competitive and transparent remuneration. Salary ranges are established based on a combination of external market benchmarks, internal pay equity considerations, and the responsibilities and complexity associated with each role. This approach helps ensure consistency across comparable roles while remaining competitive within the relevant labour markets.

The final compensation offered within the applicable range will be determined based on several objective factors, including relevant professional experience, level of skills and expertise, alignment with the role requirements, and the overall scope and complexity of the position.

The typical starting salary range for this role is:

949.500 kr—1.502.000 kr NOK

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