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Volunteer Java Jobs in Gainesville, VA (NOW HIRING)

Senior Software Engineer

Ashburn, VA · Remote

$125K - $165K/yr

Proficiency in backend technologies including GraphQL, REST APIs, Microservices, Node.js, Java ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

... Core Java, C#, and Java scripting. WHAT'S IN IT FOR YOU? * Competitive Salary and Compensation ... volunteering events, and more environmental and social initiatives. #DNS-Apptium Don't meet every ...

... Core Java, C#, and Java scripting. WHAT'S IN IT FOR YOU? * Competitive Salary and Compensation ... volunteering events, and more environmental and social initiatives. #DNS-Apptium Don't meet every ...

Proficiency in programming or scripting languages such as Java, JavaScript, Python, with focus on ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

Cloud DevOps Engineer

Reston, VA · Hybrid

$195K - $230K/yr

... Python, Java, Go). * Ability to write clean, maintainable code and contribute to application ... Benefits include Health/Dental/Vision, 401(k), Paid Time Off, STD/LTD/Life Insurance/Voluntary Life ...

Proficiency in programming or scripting languages such as Java, JavaScript, Python, with focus on ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

Experience building backend services and APIs in languages such as Java or Rust * Experience ... Additional Voluntary Benefits * Paid Time Off * 9 Observed Holidays and 2 Floating Holidays * Paid ...

Proficiency in programming or scripting languages such as Java, JavaScript, Python, with focus on ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

Proficiency in programming or scripting languages such as Java, JavaScript, Python, with focus on ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

Cloud DevOps Engineer

Reston, VA · On-site

$195K - $230K/yr

... Python, Java, Go). * Ability to write clean, maintainable code and contribute to application ... Benefits include Health/Dental/Vision, 401(k), Paid Time Off, STD/LTD/Life Insurance/Voluntary Life ...

Cloud DevOps Engineer

Reston, VA · Hybrid

$195K - $230K/yr

... Python, Java, Go). * Ability to write clean, maintainable code and contribute to application ... Benefits include Health/Dental/Vision, 401(k), Paid Time Off, STD/LTD/Life Insurance/Voluntary Life ...

Proficiency in programming or scripting languages such as Java, JavaScript, Python, with focus on ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

Proficiency in programming or scripting languages such as Java, JavaScript, Python, with focus on ... voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity ...

Proficiency in programming languages such as Java, Python, C++, or Go * Strong experience with ... We've got your back with company‑paid basic life and AD&D, optional voluntary life and AD&D for ...

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Volunteer Java information

See Gainesville, VA salary details

$15

$55

$76

How much do volunteer java jobs pay per hour?

As of Jul 17, 2026, the average hourly pay for volunteer java in Gainesville, VA is $55.98, 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 Gainesville, VA? The most popular types of Java jobs in Gainesville, VA are:
What cities near Gainesville, VA are hiring for Volunteer Java jobs? Cities near Gainesville, VA with the most Volunteer Java job openings:
Infographic showing various Volunteer Java job openings in Gainesville, VA as of July 2026, with employment types broken down into 1% Internship, 84% Full Time, 9% Part Time, and 6% Contract. Highlights an 82% Physical, 4% Hybrid, and 14% Remote job distribution, with an average salary of $116,444 per year, or $56 per hour.
Senior AI/ML Software Developer - TS/SCI with Poly (req-243) with Security Clearance

Senior AI/ML Software Developer - TS/SCI with Poly (req-243) with Security Clearance

CATHEXIS

Fairfax, VA • On-site

$148K - $179K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 9 days ago


Job description

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 with a TS/SCI with Poly clearance 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. We are proactively building a pipeline of qualified candidates for future opportunities that may arise. If your background aligns with our anticipated needs, a member of our Talent Acquisition team may reach out should a role become available or to proactively screen you for the role. 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 TS/SCI CI Poly or FS Poly clearance is required.
* Bachelor's degree in computer science 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 $148,000.00 - $179,000.00 Please note that 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
* Commuter 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 .