Haystack
← Back to Jobs
Technology
CS

Java Backend Developer

Cynet SystemsJersey City, NJ🇺🇸United StatesPosted 9 Sept 2026

Quick Overview

Seniority
Mid Senior
Work mode
Hybrid
Location
Jersey City, NJ, United States
Posted
21 hours ago
MicroservicesMongoDBSpringSpring BootAWSSOC 2AgileJavaKafka

Job Description

We are looking for Java Backend Developer for our client in Jersey City, NJ

Job Title: Java Backend Developer

Job Location: Jersey City, NJ

Job Type: Contract

Job Overview:

Pay Range: $45.00hr - $50.00hr

Requirement/Must Have:

  • Proven expertise in API design, development, and documentation.
  • Strong hands-on experience with Spring Boot and microservices.
  • Familiarity with CI/CD pipelines and AWS cloud platforms.
  • Strong verbal and written communication skills.
  • Excellent problem-solving skills.

Responsibilities:

  • Design, develop, and maintain scalable RESTful APIs using Java and Spring Boot.
  • Implement Kafka as Event Driven Technology.
  • Drive backend acceleration strategies, including asynchronous processing and query optimization.
  • Utilize MongoDB for backend data management.
  • Work within an Agile Methodology environment.
  • Ensure high code quality through testing, documentation, and code reviews.

Nice to Have:

  • AWS Knowledge.

Skills:

  • Java.
  • SpringBoot.
  • MongoDB.
  • Kafka.
  • RESTful APIs.
  • Microservices.
  • Agile Methodology.
  • CI/CD.
  • AWS.

Qualification And Education:

  • 3+ years of backend development experience with Java.
  • Experience with Kafka and MongoDB.

== ==

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.

Similar jobs