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Java Developer Volunteer Jobs in Connecticut (NOW HIRING)

Interactive Brokers

Software Engineer II

Greenwich, CT · On-site

Five-plus years of hands-on development experience using core Java; at least one year using Java 8 ... Corporate events including team outings, dinners, volunteer activities and company sports teams

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

subway

Testing and Automation Engineer

Shelton, CT · On-site

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

Interactive Brokers

Sr Cloud Engineer

Greenwich, CT · On-site

$125 - $150/hr

Experience with programming languages such as Java, Python, Node.js * Experience developing and ... Corporate events, including team outings, dinners, volunteer activities and company sports teams

Interactive Brokers

Sr Software Engineer

Greenwich, CT · On-site

$137K - $181K/yr

We seek a self-driven, self-motivated & self-managed software developer with expertise in Python ... Knowledge of JAVA and PERL is a plus. * Backoffice & clearing experience is a plus. * Self ...

Subway

Testing and Automation Engineer

Shelton, CT

$102K - $128K/yr

Ability to read, write, or debug basic test code or scripts (e.g., Java, JavaScript, Python, C# ... Volunteering time * And More..... Compensation: The base pay range for this role is $102,700 - 128 ...

Applied Physical Sciences and General Dynamics

JAVA, C#, C++, Python) An immediate position is open in Pawcatuck, CT location. APS, a wholly owned ... Invitation to Self-Identify as Protected Veteran Online Form Invitation to Voluntary Self ...

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Showing results 21-40

All JobsJava Developer Volunteer JobsJava Developer Volunteer Jobs in Connecticut

Java Developer Volunteer information

See Connecticut salary details

$14

$53

$73

How much do java developer volunteer jobs pay per hour?

As of Sep 7, 2026, the average hourly pay for java developer volunteer in Connecticut is $53.94, according to ZipRecruiter salary data. Most workers in this role earn between $46.63 and $60.38 per hour, depending on experience, location, and employer.

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 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 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.

Is Java developer still in demand?

Java developers remain in high demand due to the language's widespread use in enterprise applications, Android development, and backend systems. Skills in frameworks like Spring and knowledge of cloud platforms can enhance job prospects in this field.

What are the most commonly searched types of Java Developer jobs in Connecticut?

The most popular types of Java Developer jobs in Connecticut are:

What are popular job titles related to Java Developer Volunteer jobs in Connecticut?

For Java Developer Volunteer jobs in Connecticut, the most frequently searched job titles are:

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

The top searched job categories for Java Developer Volunteer jobs in Connecticut are:

What cities in Connecticut are hiring for Java Developer Volunteer jobs?

Cities in Connecticut with the most Java Developer Volunteer job openings:

Java Developer Volunteer jobs near you
Infographic showing various Java Developer Volunteer job openings in Connecticut as of June 2026, with employment types broken down into 85% Full Time, 8% Part Time, 3% Temporary, 3% Contract, and 1% Nights. Highlights an 82% Physical, 4% Hybrid, and 14% Remote job distribution, with an average salary of $112,186 per year, or $53.9 per hour.

Software Engineer II

Interactive Brokers

Greenwich, CT • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 7 days ago

Job description

Company Overview
Interactive Brokers Group, Inc. (Nasdaq: IBKR) is a global financial services company headquartered in Greenwich, CT, USA, with offices in over 15 countries. We have been at the forefront of financial innovation for over four decades, known for our cutting-edge technology and client commitment.
IBKR affiliates provide global electronic brokerage services around the clock on stocks, options, futures, currencies, bonds, and funds to clients in over 200 countries and territories. We serve individual investors and institutions, including financial advisors, hedge funds and introducing brokers. Our advanced technology, competitive pricing, and global market help our clients to make the most of their investments.
Barron's has recognized Interactive Brokers as the #1 online broker for six consecutive years. Join our dynamic, multi-national team and be a part of a company that simplifies and enhances financial opportunities using state-of-the-art technology.
This is a hybrid role (3 days in the office/2 days remote).
About your team:
We are a team dedicated to developing and maintaining critical applications that support back-office operations, accounting functions, and regulatory reporting systems - processing data across Interactive Brokers' global entities.
We are seeking a skilledJava Developerto oversee the full software development life cycle, encompassing planning, prioritization, testing, and release management. The ideal candidate will bring strong technical expertise paired with excellent communication skills. This role is a great fit for a detail-oriented professional who thrives in a structured environment, consistently meets deadlines, adheres to established procedures, and works collaboratively within a team setting.
What will be your responsibilities within IBKR:
  • Designing and developing high-volume, low-latency applications for mission-critical systems.
  • Optimizing and refactoring existing code for improved reliability and performance. Communicating and collaborating on development tasks with other group/department members.
  • Reviewing code changes made by other developers to ensure correctness, efficiency, readability, and conformity with best practices
  • Working with various internal stakeholders and developers on implementing solutions in production and development environments.

What required skills do you need:
  • Bachelor's or master's degree in Computer Science, Information Technology or related degree
  • Five-plus years of experience in the design and implementation of medium to large applications
  • Five-plus years of hands-on development experience using core Java; at least one year using Java 8 or later a plus
  • Object-oriented design and understanding of commonly used design patterns
  • Experience with JDBC and relational databases, preferably Oracle.
  • Working knowledge of Linux/Unix, along with scripting skills in Perl or Python a plus.
  • Demonstrate excellent collaboration and communication skills in working closely with other development teams to roll out important changes and applications.
  • Knowledge of financial instruments is a plus; otherwise, you have the desire to learn about and understand financial instruments and concepts.

Nice to have:
  • Experience with coding and deploying a standalone service with a REST API using Spring Boot
  • Knowledge of Claude Code AI Assistant
  • Knowledge of IDE IntelliJ or Visual Studio Code
  • Experience or knowledge of plain JSP, HTML, JavaScript and CSS.
  • Experience or knowledge in Spring Framework
  • Experience with agile development methods

To be successful in this position, you will have the following:
  • Self-motivated and able to handle tasks with minimal supervision.
  • Superb analytical and problem-solving skills.
  • Excellent collaboration and communication (Verbal and written) skills.
  • Outstanding organizational and time management skills.

Company Benefits & Perks
  • Competitive salary, annual performance-based bonus and stock grant
  • Retirement plan 401(k) with competitive company match
  • Excellent health and welfare benefits, including medical, dental, and vision benefits
  • Wellness screenings and assessments, health coaches and counseling services through an Employee Assistance Program (EAP)
  • Paid time off and a generous parental leave policy
  • Daily company lunch allowance provided, and a fully stocked kitchen with healthy options for breakfast and snack
  • Corporate events including team outings, dinners, volunteer activities and company sports teams
  • Education reimbursement and learning opportunities
  • Modern offices with multi-monitor setups

Apply