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Volunteer Java Jobs in California (NOW HIRING)

Corpay

Senior Full Stack Web Developer

Sacramento, CA · On-site

$120K - $150K/yr

Our software runs on Java, Ruby on Rails, AngularJS and ReactJS. We also manage an Android and iOS ... Robust PTO offerings including: major holidays, vacation, sick, personal, & volunteer time

corpay

Senior Full Stack Web Developer

Roseville, CA

$120K - $150K/yr

Our software runs on Java, Ruby on Rails, AngularJS and ReactJS. We also manage an Android and iOS ... Robust PTO offerings including: major holidays, vacation, sick, personal, & volunteer time

corpay

Senior Full Stack Web Developer

Elk Grove, CA

$120K - $150K/yr

Our software runs on Java, Ruby on Rails, AngularJS and ReactJS. We also manage an Android and iOS ... Robust PTO offerings including: major holidays, vacation, sick, personal, & volunteer time

VSolvit

FULL STACK SOFTWARE DEVELOPER

Norco, CA · On-site

$105K - $165K/yr

NET, Java) * Familiarity with cloud platforms such as AWS, Azure, or Google Cloud for application ... voluntary benefits. Our goal is to grow together and enjoy the work that we do as a team. VSolvit ...

VSolvit

SOFTWARE DEVELOPER (FULL STACK)

Norco, CA · On-site

$110K - $165K/yr

NET, Java) * Familiarity with cloud platforms such as AWS, Azure, or Google Cloud for application ... voluntary benefits. Our goal is to grow together and enjoy the work that we do as a team. VSolvit ...

Saalex

Software Engineer (Range Systems)

Corona, CA · On-site

$115K - $150K/yr

Proficiency in C++, Java, Python, or C# * Experience with hardware/software integration Desired ... Life Insurance (Basic, Voluntary & AD&D) * Paid Time Off (Vacation, Sick & Public Holidays) * Short ...

Saalex

Software Engineer (Range Systems)

Corona, CA · Hybrid

$115K - $150K/yr

Proficiency in C++, Java, Python, or C# * Experience with hardware/software integration Desired ... Life Insurance (Basic, Voluntary & AD&D) * Paid Time Off (Vacation, Sick & Public Holidays) * Short ...

Saalex

Software Engineer (Range Systems)

Corona, CA · On-site

$115K - $150K/yr

Proficiency in C++, Java, Python, or C# * Experience with hardware/software integration Desired ... Life Insurance (Basic, Voluntary & AD&D) * Paid Time Off (Vacation, Sick & Public Holidays) * Short ...

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All JobsVolunteer Java JobsVolunteer Java Jobs in California

Volunteer Java information

See California salary details

$15

$55

$76

How much do volunteer java jobs pay per hour?

As of Jul 9, 2026, the average hourly pay for volunteer java in California is $55.96, according to ZipRecruiter salary data. Most workers in this role earn between $48.41 and $62.64 per hour, depending on experience, location, and employer.

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 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 is a Volunteer Java job?

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 are the most commonly searched types of Java jobs in California? The most popular types of Java jobs in California are:
What are popular job titles related to Volunteer Java jobs in California? For Volunteer Java jobs in California, the most frequently searched job titles are:
What job categories do people searching Volunteer Java jobs in California look for? The top searched job categories for Volunteer Java jobs in California are:
What cities in California are hiring for Volunteer Java jobs? Cities in California with the most Volunteer Java job openings:
Volunteer Java jobs near you
Senior AI/ML Software Developer (req-260)

Senior AI/ML Software Developer (req-260)

CATHEXIS

Redwood City, CA • On-site

$164K - $199K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 17 days ago

Job description

Team CATHEXIS elevates the government contracting experience through rapid response, deep skill, and thoughtful problem-solving and communication. Our core capabilities are our top-tier program and project management, data analytics, and audit services, the backbone of which is our integrated approach to operational excellence.
You worked hard to get to where you are. You strive to make every day better than the day before. So do we. Team CATHEXIS operates with an all-in mindset. We are working together to create a company that supports our shared values and individual goals. Our values are centered around leading with integrity, owning the outcome, growing together, and moving with purpose in everything we do for our employees, customers, partners, and communities. We believe success is best when we listen and lead with empathy; model high standards of ethics to provide a rewarding candidate experience; work hard, have fun, and appreciate the strengths we all bring to the team; and empower our employees to create innovative and trusted results.
We are looking for a dynamic Senior AI/ML Software Developer to join our team. The Senior AI/ML Software Developer will work alongside a team of highly skilled engineers in the development of AI applications. A motivated and qualified candidate will not only have hands-on development experience in (JavaScript, Python or Java) but also a willingness to collaborate with teams to solve problems. We're seeking curious and creative technical staff who are excited about delivering quality solutions.
Responsibilities
The responsibilities include, but are not limited to:
  • Collaborate with other developers, staff and leadership to design solutions that solve customer problems.
  • Design, develop, and maintain technical solutions.
  • Build and improve tools for users to understand and analyze large-scale data.
  • Perform debugging, troubleshooting, modifications and testing of software and solutions.
  • Develop documentation, and collaborate in the development of technical procedures and user support guides.

Requirements
  • An active Secret or above clearance is required.or related field.
  • 5+ years relevant experience.
  • Experience with JavaScript, Java, or other object-oriented programming language(s).
  • Hands-on experience and understanding of object-oriented programming, data structures, algorithms, profiling & optimization.
  • Passion for developing team-oriented solutions to complex engineering problems.
  • Proficient in leveraging modern LLM tools to accelerate development workflows and enhance code quality.

Benefits
CATHEXIS offers competitive compensation packages to all eligible employees. Our goal is to provide a compensation package that reflects the value you bring to our team, is competitive with national average market rates, and promotes your financial security and personal well-being. The annual salary range for this role is $164,000 - $199,272. Please note hat the salary information provided is a general guideline. CATHEXIS considers various factors in its final offer, including location, qualifications, experience, and skills.
  • Performance Bonuses
  • Medical Insurance
  • Dental Insurance
  • Vision Insurance
  • 401(k) Plan (Traditional and ROTH)
  • Life Insurance (Basic, Voluntary & AD&D)
  • Paid Time Off
  • 11 Federal Holidays
  • Parental Leave
  • Commute Benefits
  • Short Term & Long Term Disability
  • Training & Development
  • Wellness Program
  • Community Outreach Initiatives

CATHEXIS is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability EEO IS THE LAW. If you are an individual with a disability and would like to request a reasonable accommodation as part of the employment selection process, please contact the Recruiting Department RecruitingTeam@cathexisfederal.com.

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