Java Backend Developer; W2 ; in NJ

Java Backend Developer (W2 Contract
- Local to NJ Only)

Location:
Parsippany, NJ (Onsite
- In-Person Required)
Employment Type: W2 Contract
Duration: 12+ Months
Rate:
Up to $60/hr (W2)
Experience:
Minimum 10+ years

We are seeking a highly experienced Java Backend Developer to join our client team in Parsippany, NJ
. This role is fully onsite
, requiring strong in-person collaboration. The ideal candidate will have deep backend engineering expertise and a proven track record of building scalable, high-performance applications.

Local candidates only. W2 contract.

• Design, develop, and enhance backend services and APIs using Java and Spring Boot
  .
• Collaborate with cross-functional teams, architects, and business stakeholders.
• Participate in requirement analysis, solution design, and sprint planning.
• Develop reusable, secure, and efficient server-side components.
• Integrate backend services with databases, messaging systems, and external services.
• Troubleshoot, debug, and optimize performance of backend systems.
• Develop unit tests, support QA, and maintain technical documentation.

• 10+ years of hands-on experience in Java backend development
  .
• Strong expertise in Spring / Spring Boot
  , REST APIs, and microservices.
• Proficient with relational databases (
  Oracle, PostgreSQL, MySQL
  , etc.).
• Experience with CI/CD pipelines, Git, Maven/Gradle.
• Solid understanding of OOP, design patterns, and enterprise application architecture.
• Experience with cloud environments (AWS/Azure/GCP) is a plus.
• Excellent communication and analytical skills.
• Must be able to work 100% onsite in Parsippany, NJ
  .