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Java Developer Volunteer Jobs in Pennsylvania (NOW HIRING)

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java Full Stack Developer

Pittsburgh, PA · On-site

$51 - $65.75/hr

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Sr.Java API Developer

Pittsburgh, PA · On-site

$170/hr

Java API Developer Location: Pittsburgh, Pennsylvania, United States Type: Direct Hire Compensation ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

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Showing results 1-20

All JobsJava Developer Volunteer JobsJava Developer Volunteer Jobs in Pennsylvania

Java Developer Volunteer information

See Pennsylvania salary details

$15

$56

$77

How much do java developer volunteer jobs pay per hour?

As of Aug 4, 2026, the average hourly pay for java developer volunteer in Pennsylvania is $56.83, according to ZipRecruiter salary data. Most workers in this role earn between $49.13 and $63.61 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 Pennsylvania? The most popular types of Java Developer jobs in Pennsylvania are:
What are popular job titles related to Java Developer Volunteer jobs in Pennsylvania? For Java Developer Volunteer jobs in Pennsylvania, the most frequently searched job titles are:
What job categories do people searching Java Developer Volunteer jobs in Pennsylvania look for? The top searched job categories for Java Developer Volunteer jobs in Pennsylvania are:
What cities in Pennsylvania are hiring for Java Developer Volunteer jobs? Cities in Pennsylvania with the most Java Developer Volunteer job openings:
Java Developer Volunteer jobs near you
Infographic showing various Java Developer Volunteer job openings in Pennsylvania as of July 2026, with employment types broken down into 81% Full Time, 7% Part Time, 1% Temporary, and 11% Contract. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution, with an average salary of $118,214 per year, or $56.8 per hour.

Sr.Java Full Stack Developer

System One

Pittsburgh, PA • On-site

$51 - $65.75/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 5 days ago

Job description

Job Title: Sr. Java Full Stack Developer Location: Pittsburgh, Pennsylvania Type: Contract To Hire Responsibilities:

  • Design, develop, and maintain Java API services, including RESTful APIs and microservices, ensuring scalability, security, and high performance.
  • Work with front-end UI development using Angular, HTML, and CSS to create engaging, user-friendly interfaces.
  • Implement and optimize API standards and services, collaborating with cross-functional teams to build large-scale features.
  • Develop, test, and deploy backend components using Spring Boot, microservices, and containerization technologies such as OpenShift and Kubernetes.
  • Integrate Java-based applications with databases like Oracle, SQL Server, MongoDB, and messaging systems such as Apache Kafka.
  • Utilize DevOps tools including Jenkins, uDeploy, GitHub, and CI/CD pipelines to automate workflows and ensure continuous delivery.
  • Review design documents, create technical systems designs, and translate requirements into functional solutions.
  • Collaborate with internal and external stakeholders, including API developers, business analysts, and QA teams, within an Agile environment.
  • Research and apply modern libraries and technologies to expedite development and improve application security.

Requirements:

  • At least 6+ years of Java API development experience with REST API, Spring Boot, XML, JSON, Swagger.
  • Minimum 6+ years of experience developing and consuming SOAP and REST web services in production environments.
  • 5+ years of front-end UI development experience using Angular, HTML, and CSS.
  • Hands-on experience with OpenShift, containerization, Kubernetes, and microservices architecture.
  • 3+ years working with GitHub, Jenkins, and CI/CD pipelines.
  • Proficiency with client-side technologies like Node JS and Angular 8+.
  • Experience with Kafka, MongoDB, and integrating Java applications with Oracle/SQL Server databases.
  • Strong understanding of security best practices to prevent vulnerabilities in coding.
  • Excellent collaboration, communication, and interpersonal skills in an Agile team environment.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

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Ref: #404-IT Pittsburgh