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Volunteer Java Jobs (NOW HIRING)

System One Holdings, LLC

Java Architect

Greenbelt, MD · On-site

$180K - $190K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Architect Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 180-190K Work ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Architect

Greenbelt, MD · Remote

$64.50 - $87/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Architect Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 180-190K Work ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Architect

Greenbelt, MD · Remote

$64.50 - $87/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Architect Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 180-190K Work ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Architect

Greenbelt, MD · Remote

$64.50 - $87/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Architect Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 180-190K Work ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Architect

Greenbelt, MD · Remote

$64.50 - $87/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Architect Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 180-190K Work ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer

Fairfield, OH · Remote

$110K - $120K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: Cincinnati Ohio Type: Contract To Hire Compensation: $110,000.00 - $120 ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

Bridge Core (BCore)

Java Developer

Mclean, VA · On-site

$160K - $200K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Overview Java Developer McLean, VA TS/SCI with Poly At Bcore, our strength comes from how we ... Benefits include Health/Dental/Vision, 401(k), Paid Time Off, STD/LTD/Life Insurance/Voluntary Life ...

Bridge Core (BCore)

Java Developer

Mclean, VA · On-site

$160K - $200K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Java Developer McLean, VA TS/SCI with Poly At Bcore, our strength comes from how we deliver impact ... Benefits include Health/Dental/Vision, 401(k), Paid Time Off, STD/LTD/Life Insurance/Voluntary Life ...

System One Holdings, LLC

Java Developer

Greenbelt, MD · On-site

$120K - $190K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 120-190K (depends ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer

Greenbelt, MD · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 120-190K (depends ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer

Greenbelt, MD · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 120-190K (depends ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer

Greenbelt, MD · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 120-190K (depends ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer

Greenbelt, MD · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: Greenbelt, Maryland Type: Contract-to-Hire Compensation: 120-190K (depends ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One Holdings, LLC

Java Developer - 100% REMOTE

Vienna, VA · On-site +1

$40 - $60/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: MUST BE LOCAL TO VIENNA, VA or WINCHESTER, VA or PENSACOLA, FL FOR FACE TO ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer - 100% REMOTE

Vienna, VA · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: MUST BE LOCAL TO VIENNA, VA or WINCHESTER, VA or PENSACOLA, FL FOR FACE TO ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer - 100% REMOTE

Vienna, VA · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: MUST BE LOCAL TO VIENNA, VA or WINCHESTER, VA or PENSACOLA, FL FOR FACE TO ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer - 100% REMOTE

Vienna, VA · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: MUST BE LOCAL TO VIENNA, VA or WINCHESTER, VA or PENSACOLA, FL FOR FACE TO ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer - 100% REMOTE

Vienna, VA · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: MUST BE LOCAL TO VIENNA, VA or WINCHESTER, VA or PENSACOLA, FL FOR FACE TO ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

System One

Java Developer - 100% REMOTE

Vienna, VA · Remote

$52.25 - $67.50/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Java Developer Location: MUST BE LOCAL TO VIENNA, VA or WINCHESTER, VA or PENSACOLA, FL FOR FACE TO ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

Herdt Consulting Inc

Java Developer

Pensacola, FL · On-site

$27.89/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Position Overview Herdt Consulting is seeking a Java Developer to support theNaval Education and ... Company-paid short- and long-term disability plus voluntary life and AD&D.

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Volunteer Java information

See salary details

$15

$56

$77

How much do volunteer java jobs pay per hour?

As of Aug 18, 2026, the average hourly pay for volunteer java in the United States is $56.70, according to ZipRecruiter salary data. Most workers in this role earn between $49.04 and $63.46 per hour, depending on experience, location, and employer.

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.

More about Volunteer Java jobs

What cities are hiring for Volunteer Java jobs?

Cities with the most Volunteer Java job openings:

What are the most commonly searched types of Java jobs?

The most popular types of Java jobs are:

What states have the most Volunteer Java jobs?

States with the most job openings for Volunteer Java jobs include:

What job categories do people searching Volunteer Java jobs look for?

The top searched job categories for Volunteer Java jobs are:

Volunteer Java jobs near you
Infographic showing various Volunteer Java job openings in the United States as of August 2026, with employment types broken down into 83% Full Time, and 17% Part Time. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $117,931 per year, or $56.7 per hour.

Java Architect

System One Holdings, LLC

Greenbelt, MD • On-site

$180K - $190K/yr

Contractor

Medical, Dental, Vision, Life, Retirement

Posted 19 days ago

Job description

Job Title: Java Architect
Location: Greenbelt, Maryland
Type: Contract-to-Hire
Compensation: 180-190K
Work Model: Remote
Security Clearance: Must have an active IRS MBI Clearance and current GFE
Responsibilities
  • Identify performance improvement opportunities within the Java code base, prototype alternatives, and assist in implementing proven solutions.
  • Create design documents for Java code that is currently written in IBM Assembler.
  • Review code for thread safety, code quality, and security violations.
  • Analyze and improve Spring Batch throughput.

Requirements
  • Bachelor's Degree and 12+ years of experience developing applications in Java
  • US Citizenship required
  • Must possess an active IRS MBI Clearance and have current GFE
  • Prior hands-on experience with Spring Batch and Spring Boot required
  • Experience with object-oriented and aspect-oriented design and development
  • Experience with JSON and Annotations
  • Prior experience running Java under Unix Systems Services a plus
  • Demonstrated ability to seek out information (proactive learning)
  • Ability to work both independently and as part of a larger team
  • Service Oriented Architecture (SOA)
  • Java Full Stack Development
  • Excellent oral and written communication skills with client stakeholders at all organizational and technical levels
  • Prior experience working on Agile teams

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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#LI-CK1
Ref: #851-Rockville-S1

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