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Java Developer Volunteer Jobs in Fremont, CA (NOW HIRING)

County of Alameda

Information Systems Analyst

Oakland, CA · On-site

$55.85 - $74.84/hr

Professional Certification as a Microsoft Certified Solution Developer, Sun Certified Java ... Voluntary Benefits - Accident Insurance, Critical Illness, Hospital Indemnity and Legal Services

Align Technology

Software Engineer

San Jose, CA

$141K - $194K/yr

Strong experience in Java (preferably 17 or later), Spring, Spring boot microservices, Web services ... Voluntary Supplemental Life Insurance for Employee, Spouse/Domestic Partner, and Child(ren) are ...

Align Technology, Inc.

Software Engineer

San Jose, CA · On-site

Strong experience in Java (preferably 17 or later), Spring, Spring boot microservices, Web services ... Voluntary Supplemental Life Insurance for Employee, Spouse/Domestic Partner, and Child(ren) are ...

TEKsystems

Automation Tester/ SDET

San Francisco, CA

$71/hr

Write and maintain automation code using Java * Partner with Product, Engineering, and QA teams to ... Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term ...

Oracle

Senior Software Developer

Santa Clara, CA · On-site

$64 - $84.50/hr

Experience with Java and/or Python is preferred. * Work across teams to engineer the best system ... Voluntary benefits including auto, homeowner and pet insurance The role will generally accept ...

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Java Developer Volunteer information

See Fremont, CA salary details

$17

$62

$84

How much do java developer volunteer jobs pay per hour?

As of Aug 8, 2026, the average hourly pay for java developer volunteer in Fremont, CA is $62.06, according to ZipRecruiter salary data. Most workers in this role earn between $53.70 and $69.47 per hour, depending on experience, location, and employer.

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.

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 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 most commonly searched types of Java Developer jobs in Fremont, CA? The most popular types of Java Developer jobs in Fremont, CA are:
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What cities near Fremont, CA are hiring for Java Developer Volunteer jobs? Cities near Fremont, CA with the most Java Developer Volunteer job openings:
Java Developer Volunteer jobs near you
Infographic showing various Java Developer Volunteer job openings in Fremont, CA as of August 2026, with employment types broken down into 95% Full Time, and 5% Contract. Highlights an 73% In-person, 21% Hybrid, and 6% Remote job distribution, with an average salary of $129,095 per year, or $62.1 per hour.

Full Stack Developer Contractor: Java/Angular Lead

CSI Companies

Pleasanton, CA • On-site

$58.25 - $75.25/hr

Other

Medical, Dental, Vision, Life

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

CSI Companies is seeking an experienced Tech Lead (Full Stack Engineer) to lead the design, development, and delivery of scalable, secure, and high performing enterprise applications. This role focuses on full stack development, microservices architecture, DevOps practices, cloud technologies, and modern application development within a collaborative enterprise environment.

This opportunity is ideal for a hands on technical leader who enjoys mentoring development teams, driving engineering best practices, and delivering enterprise scale solutions while working closely with business and technical stakeholders.

You will provide technical leadership across the full software development lifecycle and support modernization initiatives, including AI enabled solutions and cloud native architectures.

Hours: Standard business hours

Location: Onsite in Pleasanton California

Pay: Competitive rate based on experience, credentials, and education

Position Type: Consultant

Work Authorization

Candidates must be authorized to work in the United States and eligible for W2 employment. Limited sponsorship may be available based on client requirements. No corp to corp arrangements are available.

What you will do

• Lead the design, development, integration, and deployment of enterprise web applications and microservices

• Provide technical leadership, mentorship, and guidance to development teams

• Collaborate with project managers, stakeholders, and technical teams to deliver enterprise solutions

• Develop applications using Java, JavaScript, Angular, Spring Boot, React, Node.js, MySQL, PostgreSQL, MongoDB, Docker, GitHub, and IAM technologies

• Design and support REST and SOAP services using modern microservices architectures

• Ensure solutions are scalable, secure, maintainable, and aligned with engineering best practices

• Drive adoption of CI and CD processes, automated testing, secure development practices, and software quality standards

• Collaborate with onsite, offshore, and global development teams

• Troubleshoot complex technical issues and support production deployments

• Evaluate emerging technologies and recommend innovative solutions

• Support AI and LLM integrations while ensuring compliance with governance requirements

• Deliver technical demonstrations and present solution recommendations to stakeholders

What we are looking for

• Bachelor’s degree in Computer Science, Information Technology, Computer Engineering, or related field, or equivalent experience

• 7 or more years of experience developing and delivering enterprise web applications

• 7 or more years of experience as a Java Full Stack Developer

• Strong experience with Java, JavaScript, Angular, HTML, Spring Boot, React, and Node.js

• Experience developing REST and SOAP services using microservices architectures

• Strong experience with MySQL, MongoDB, PostgreSQL, GitHub, Docker, and Identity and Access Management technologies

• Strong DevOps experience including GitHub Actions, Bamboo, SonarQube, CI and CD pipelines, and deployment automation

• Experience developing responsive web applications and integrating third party APIs

• Strong knowledge of software engineering best practices including code reviews, refactoring, automated testing, and secure coding

• Strong analytical and problem solving skills

• Excellent written, verbal, and interpersonal communication skills

• Experience working with offshore and India based development teams

• Ability to understand and implement AI enabled solutions

• Ability to work independently with minimal supervision

• Ability to work onsite in Pleasanton California

• Ability to travel up to 10 percent as needed

Nice to have

• Experience with Kubernetes

• Experience with Azure cloud services

• Experience with Azure database technologies

• Familiarity with Backend for Frontend microservices architecture

• Experience working in Agile development environments

• Experience with JUnit, SOAPUI, Postman, and JMeter

• Experience leading engineering teams and mentoring developers

• Experience designing enterprise scale microservices solutions

• Experience supporting cloud modernization initiatives

• Knowledge of AI enabled application architectures

Who Should Apply

This role is ideal for a senior full stack engineer who enjoys leading technical teams, building enterprise applications, driving cloud and DevOps initiatives, and influencing architecture decisions across complex environments.

About Us

The CSI Companies is a leading staffing and recruiting firm providing organizations with highly skilled professionals since 1994. We have been recognized as a Best of Staffing award winner for over a decade and pride ourselves on delivering exceptional talent nationwide.

Benefits Offered

• Weekly pay

• Medical dental and vision coverage

• Voluntary life and AD and D coverage

• Paid training

• Opportunity for advancement upon performance and availability

Apply