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Freelance Java Backend Developer Jobs in Hartford, CT

Java Tech Lead

Wallingford, CT · On-site

$60 - $65/hr

Strong understanding of backend design, scalability, and performance optimization. * Strong ... Experience with CI/CD pipelines and DevOps practices. * Prior experience working on enterprise ...

Java Spring boot with AEI

Hartford, CT · On-site

$51.50 - $66.50/hr

Experience in Java, J2EE (v8) Backend Service/API Development, Spring, Spring boot, JMS, Web services and other distributed technologies, Experience in CI and Dev Ops - Understands Jenkins, GitHub ...

Java Spring boot with AEI

Hartford, CT · On-site

$51.50 - $66.50/hr

Experience in Java, J2EE (v8) Backend Service/API Development, Spring, Spring boot, JMS, Web services and other distributed technologies, Experience in CI and Dev Ops - Understands Jenkins, GitHub ...

Software Engineer

Wallingford, CT · On-site

$60 - $65/hr

Collaborate with UI/UX designers and backend developers to deliver seamless user experiences ... Integrate frontend components with backend services (preferably Java-based). * Participate in code ...

Software Engineer

Wallingford, CT · On-site

$60 - $65/hr

Collaborate with UI/UX designers and backend developers to deliver seamless user experiences ... Integrate frontend components with backend services (preferably Java-based). * Participate in code ...

Senior Android Developer

Hartford, CT · On-site

$58.50 - $74.25/hr

Sr. Android Developer Needed. Long-term contract to hire. Open to Remote in U.S. but preference is ... with Java-to-Kotlin migrations. * Integrating Android applications with Rest APIs and backend ...

Android Developer

Berlin, CT · On-site

$55.25 - $72.50/hr

Develop mobile applications with a focus on back-end programming to configure and manage hardware ... Java for Android; Jenkins; Maven; GitHub, GitLab or a similar build and development tool ...

Android Developer

Berlin, CT · Hybrid

$55.25 - $72.50/hr

Develop mobile applications with a focus on back-end programming to configure and manage hardware ... Java for Android; Jenkins; Maven; GitHub, GitLab or a similar build and development tool ...

MongoDB Engineer

Hartford, CT · On-site

$115K - $138K/yr

Job Summary We are looking for a skilled MongoDB Engineer to design, optimize, and support MongoDB ... Develop and maintain APIs and backend services using MongoDB with: * Node.js * Java * Python

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How much do freelance java backend developer jobs pay per hour?

As of Jun 18, 2026, the average hourly pay for freelance java backend developer in Hartford, CT is $55.11, according to ZipRecruiter salary data. Most workers in this role earn between $48.99 and $63.51 per hour, depending on experience, location, and employer.
What are the most commonly searched types of Java Backend Developer jobs in Hartford, CT? The most popular types of Java Backend Developer jobs in Hartford, CT are:
Java Tech Lead

Java Tech Lead

CYNET SYSTEMS

Wallingford, CT • On-site

$60 - $65/hr

Contractor

Posted 6 days ago

Be an early applicant


Job description

Job Overview:

Pay Range: $60hr - $65hr

Requirement/Must Have:

  • Strong experience in Java/J2EE development.
  • Hands-on experience with Spring Boot, RESTful APIs, and microservices architecture.
  • Strong understanding of backend design, scalability, and performance optimization.
  • Strong experience with Angular (v8+), TypeScript, RxJS, and Angular CLI.
  • Expertise in component-based architecture and state management.
  • Proficiency in HTML5, CSS3, JavaScript (ES6+).
  • Proven experience in technical leadership and team mentoring.
  • Strong analytical, problem-solving, and decision-making abilities.
  • Excellent communication and stakeholder management skills.
  • Experience working in Agile/Scrum environments.
  • Proficiency with Git or other version control systems.

Responsibilities:

  • Lead the development and maintenance of responsive web applications using Angular and Java technologies.
  • Provide technical guidance and mentorship to the development team.
  • Collaborate with UI/UX designers, backend teams, and stakeholders to deliver seamless user experiences.
  • Design and develop robust backend services using Java (Spring Boot) and REST APIs.
  • Ensure clean, modular, and maintainable code following industry best practices.
  • Review code, drive quality assurance, and support testing and debugging activities.
  • Oversee integration between frontend applications and backend services.
  • Work closely with product and business teams to gather requirements and deliver scalable solutions.
  • Drive continuous improvement in architecture, performance, and development processes.

Nice to Have:

  • Exposure to cloud platforms (AWS, Azure, or GCP).
  • Experience with CI/CD pipelines and DevOps practices.
  • Prior experience working on enterprise-scale applications.

Founded in 2010 and headquartered in the Washington, DC metro area, Cynet Systems Inc. is a leading staffing and recruiting powerhouse. Proudly recognized as a nationally and locally certified diversity firm, Cynet delivers agile, scalable talent solutions across industries. With an active footprint in all 50 U.S. states and Canada, we support thousands of consultants through our expansive, high-performing recruitment engine operating across North America and Asia—ensuring speed, quality, and consistency in every hire.

Cynet Systems logo

About Cynet Systems

Sourced by ZipRecruiter

Cynet Systems Inc is a staffing and recruiting corporation nestled in Ashburn, VA, USA. Established in 2010, the company operates within the Information Technology and Services sector, specializing in providing effective workforce solutions to different business needs, including IT consulting, direct hire, and contract staffing services. Through the years, Cynet Systems has built an impressive portfolio, going beyond borders and expanding its operations internationally in Canada and India. Rooted in its core values of teamwork, leadership, and commitment, Cynet Systems helps businesses unlock their full potential by providing versatile and competent professionals that perfectly align with their needs. Fueled by their unwavering mission to deliver top-tier talent to businesses worldwide, Cynet Systems garnered various recognitions including SIA's fastest-growing staffing firms and Best Place to Work in Virginia for 2019.

Industry

It services

Company size

501 - 1,000 Employees

Headquarters location

Sterling, VA, US

Year founded

2010

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