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Fullstack Developer Java Jobs in Sewaren, NJ (NOW HIRING)

CYNET SYSTEMS

Fullstack Developer

Whippany, NJ · On-site

$65 - $70/hr

Strong proficiency in Java 8+/11+, Spring Boot, and Spring MVC. * Strong proficiency in React.js ... Experience with CI/CD tools such as Jenkins, Azure DevOps, or GitHub Actions. * Experience with ...

General Intuition

Fullstack Engineer

New York, NY · On-site

$180K - $275K/yr

What We're Looking For * 5+ years of fullstack engineering experience * Experience with React ... Bonus: Experience building and shipping your own products from 0 → 1; Java, C#, and C ...

Jobs for Humanity

Full Stack Java Developers

Woodbridge, NJ · On-site

$53 - $68.50/hr

Full Stack Java Developer-Manager Company: EY Location: Iselin, NJ Salary: Education: Less Than ... Prior fullstack software product development experience with a preferred understanding of DevOps ...

Capgemini

Java Fullstack Developer with AWS

New York, NY · On-site

$118K/yr

Strong Experience in building Java/Spring Boot microservices. * Experience in using AWS services ... engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data ...

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How much do fullstack developer java jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for fullstack developer java in Sewaren, NJ is $59.52, according to ZipRecruiter salary data. Most workers in this role earn between $51.73 and $66.78 per hour, depending on experience, location, and employer.

What are the roles and responsibilities of a fullstack developer Java?

A Fullstack Developer Java is responsible for designing, developing, and maintaining both the front-end and back-end components of web applications using Java and related technologies. Their duties include building user interfaces, developing server-side logic, integrating APIs, and managing databases. They often work with frameworks such as Spring Boot for back-end development and may use JavaScript frameworks like React or Angular for the front-end. Fullstack Java developers also ensure the application is secure, scalable, and meets client requirements. Collaboration with other team members, such as UI/UX designers and testers, is a key part of the role.

How does a fullstack developer Java balance front-end and back-end responsibilities within a team?

Fullstack Developer Java roles often require a flexible approach, as you may shift between front-end tasks like building user interfaces (using frameworks such as React or Angular) and back-end development (using Java, Spring Boot, etc.) based on project needs. Collaboration with UI/UX designers, DevOps engineers, and backend specialists is common, especially in agile environments where responsibilities can change sprint-to-sprint. It's important to communicate openly with team members to ensure seamless integration and to manage workload effectively. Being comfortable with both client-side and server-side technologies allows you to contribute across the stack and increases your value within the team.

What are the key skills and qualifications needed to thrive as a fullstack developer Java?

To thrive as a Fullstack Developer Java, you need strong proficiency in Java, JavaScript, HTML, CSS, and a solid understanding of both backend and frontend frameworks, typically supported by a degree in computer science or related field. Familiarity with tools like Spring Boot, React or Angular, REST APIs, version control systems like Git, and experience with databases such as MySQL or MongoDB are commonly required. Excellent problem-solving, teamwork, and communication skills help developers collaborate effectively and deliver robust solutions. These competencies ensure seamless end-to-end development, allowing for the creation of scalable, maintainable, and user-friendly web applications.

What is the difference between Fullstack Developer Java vs Backend Developer Java?

AspectFullstack Developer JavaBackend Developer Java
Primary FocusDeveloping both frontend and backend componentsDeveloping server-side logic and database integration
Required SkillsJava, HTML, CSS, JavaScript, frameworks like React or AngularJava, Spring, Hibernate, database management
Work EnvironmentCollaborates on full application stack, often in agile teamsFocuses on backend systems, APIs, and server-side architecture
CertificationsJava certifications, fullstack development coursesJava certifications, backend-specific courses

Fullstack Developer Java and Backend Developer Java share core Java skills and often work within similar industries. However, fullstack developers handle both frontend and backend tasks, while backend developers focus solely on server-side logic. Your choice depends on whether you prefer working across the entire application or specializing in backend systems.

What cities near Sewaren, NJ are hiring for Fullstack Developer Java jobs?

Cities near Sewaren, NJ with the most Fullstack Developer Java job openings:

Fullstack Developer Java jobs near you
Infographic showing various Fullstack Developer Java job openings in Sewaren, NJ as of August 2026, with employment types broken down into 76% Full Time, 9% Part Time, 14% Contract, and 1% Nights. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $123,802 per year, or $59.5 per hour.

Fullstack Developer

Whippany, NJ • On-site

CYNET SYSTEMS
IT Services • 501 - 1,000 employees
Learn more about CYNET SYSTEMSexternal

$65 - $70/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 2 days ago

Job description

Job Overview:
Pay Range: $65hr - $70hr
Requirement/Must Have:
  • Strong proficiency in Java 8+/11+, Spring Boot, and Spring MVC.
  • Strong proficiency in React.js, JavaScript (ES6+), HTML5, and CSS3.
  • Experience in REST API development.
  • Experience in Microservices architecture.
  • Experience in Frontend frameworks including React Hooks and Redux.
  • Familiarity with Version control using Git.
  • Familiarity with Build tools such as Maven or Gradle.
  • Familiarity with API tools like Postman and Swagger.
  • Experience with relational databases such as MySQL or PostgreSQL.
  • Knowledge of NoSQL databases like MongoDB or Cassandra is a plus.
  • Experience with messaging systems such as Kafka or RabbitMQ is a plus.
  • Experience with cloud platforms including AWS, Azure, or GCP.
  • Experience with CI/CD tools such as Jenkins, Azure DevOps, or GitHub Actions.
  • Experience with containerization using Docker or Kubernetes is preferred.
Responsibilities:
  • Design, develop, and maintain scalable backend services using Java and Spring Boot.
  • Develop RESTful APIs and microservices.
  • Implement business logic, data processing, and integration with external systems.
  • Ensure security, performance, and scalability of backend applications.
  • Build interactive and responsive UI components using React.js.
  • Develop reusable components and front-end libraries.
  • Integrate frontend with backend APIs.
  • Optimize applications for maximum performance and cross-browser compatibility.
  • Work across the stack to deliver end-to-end solutions.
  • Collaborate with UX/UI designers for pixel-perfect implementation.
  • Ensure smooth data flow and state management using Redux or Context API.
  • Build and consume RESTful services using JSON and HTTP protocols.
  • Integrate with third-party services and enterprise systems.
  • Design and manage SQL and NoSQL databases.
  • Write efficient queries and optimize database performance.
  • Work with tools like MySQL, PostgreSQL, and MongoDB.
  • Participate in CI/CD pipeline setup and maintenance.
  • Deploy applications using cloud platforms such as AWS, Azure, or GCP.
  • Work with containers including Docker and Kubernetes.
  • Write unit tests, integration tests, and UI tests.
  • Ensure code quality using tools like SonarQube.
  • Perform debugging and troubleshooting.
  • Work in Agile teams and participate in scrum ceremonies.
  • Collaborate with product owners, QA, and DevOps teams.
  • Provide technical guidance and mentor junior developers.
Nice to Have:
  • Knowledge of NoSQL databases (MongoDB, Cassandra).
  • Experience with messaging systems (Kafka, RabbitMQ).
  • Experience with Docker and Kubernetes.
Skills:
  • Java.
  • Spring Boot.
  • Spring MVC.
  • React.js.
  • JavaScript.
  • HTML5.
  • CSS3.
  • REST API.
  • Microservices.
  • Redux.
  • Git.
  • Maven.
  • Gradle.
  • MySQL.
  • PostgreSQL.
  • AWS.
  • Azure.
  • GCP.
  • CI/CD.
  • Docker.
  • Kubernetes.
Qualification And Education:
  • Strong technical background in Full Stack development.
  • Ability to communicate effectively with stakeholders.
     
 

Benefits
 
Our Benefits Include:
  • Medical, Dental, and Vision Insurance
  • 401(k) Retirement Plan
  • Health Savings Account (HSA)
  • Disability Insurance (Short-Term and Long-Term)
  • Life and AD&D Insurance
  • Paid Sick Leave (where required by applicable state or local law)
  • Supplemental Insurance Plans
  • Identity Theft Protection
  • Pet Insurance
  • Employee Wellness Programs
  • Employee Assistance Program (EAP)
  • Career Growth and Professional Development Opportunities
Disclaimer: Benefits eligibility, accrual rates, and usage limits may vary based on employment status, length of service, and work location. Paid Sick Leave is provided in strict accordance with applicable state and municipal mandates. Cynet Systems Inc. reserves the right to modify, amend, or terminate any benefit plans at any time in accordance with applicable laws.

About Cynet Systems

Founded in 2010 and headquartered in the Washington, DC metro area, Cynet Systems Inc. is a leading technology staffing and workforce solutions company serving Fortune 500 companies, government agencies, and enterprise organizations across the United States and Canada. We deliver agile, scalable talent solutions across IT, engineering, life sciences, clinical, and professional staffing, powered by a high-performing recruitment engine operating across North America and Asia.
As a nationally and locally certified Minority Business Enterprise (MBE), Cynet Systems is committed to helping organizations build high-performing teams while empowering professionals to grow rewarding careers. Our organization is certified to ISO 9001, ISO 14001, ISO 27001, and SOC 2 Type II standards, reflecting our commitment to quality, security, operational excellence, and customer success.
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

Social media

Twitter

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