Demo

Java Developer

Randstad Digital Americas
Jersey, NJ Contractor
POSTED ON 9/19/2026
AVAILABLE BEFORE 10/18/2026
Job Summary

We are seeking a highly skilled Java Developer to develop and support scalable enterprise applications and services. The ideal candidate will have strong experience building distributed systems, REST APIs, data-processing solutions, and cloud-native applications. This role requires hands-on development, production support, and collaboration with cross-functional teams to deliver resilient, high-performing solutions.

location: Jersey City, New Jersey

job type: Contract

salary: $54.62 - 64.62 per hour

work hours: 9am to 5pm

education: Bachelors

Responsibilities

Key Responsibilities

  • Develop and maintain enterprise-grade Java applications and microservices.
  • Build scalable and highly available RESTful APIs.
  • Participate in architecture discussions and technical design reviews.
  • Develop reusable frameworks, components, and common platform capabilities.
  • Optimize application performance, scalability, and reliability.
  • Integrate applications with databases, messaging systems, and third-party platforms.
  • Troubleshoot production issues and perform root cause analysis.
  • Implement CI/CD pipelines and DevOps best practices.
  • Ensure adherence to security, compliance, and coding standards.
  • Mentor junior developers and contribute to technical leadership initiatives.
  • Support application modernization and cloud migration efforts.

Required Technical Skills

  • Core Java
  • Java 11/17
  • Object-Oriented Design (OOD)
  • Multithreading & Concurrency
  • Collections Framework
  • JVM internals and performance tuning
  • Frameworks
  • Spring Boot & Spring MVC
  • Spring Data JPA
  • Spring Security
  • Hibernate/JPA
  • REST Services
  • OpenAPI / Swagger
  • JSON/XML Processing
  • API Security (OAuth2, JWT)

Database Technologies

  • Oracle
  • PostgreSQL / SQL Server
  • SQL Optimization
  • Data Modeling
  • Stored Procedures

Messaging & Integration

  • Event-Driven Architectures
  • DevOps & Automation
  • Git
  • Jenkins
  • CI/CD Pipelines
  • SonarQube
  • Maven / Gradle
  • Monitoring & Observability
  • Splunk
  • Dynatrace / AppDynamics

Preferred Skills

  • Microservices Architecture
  • Data Processing Platforms
  • Application Security Best Practices
  • Infrastructure as Code (Terraform, Ansible)
  • Cloud-Native Development

Soft Skills

  • Strong problem-solving abilities.
  • Excellent communication and stakeholder management.
  • Ability to work in Agile teams.
  • Experience driving technical discussions.
  • Ownership mindset and operational accountability.
  • Experience
  • Senior Engineer: 7 years of Java development experience.
  • Experience supporting mission-critical enterprise applications.
  • Experience working with distributed systems and high-volume processing platforms.

Qualifications

Preferred Skills

Microservices Architecture

Data Processing Platforms

Application Security Best Practices

Infrastructure as Code (Terraform, Ansible)

Cloud-Native Development

Soft Skills

Strong problem-solving abilities.

Excellent communication and stakeholder management.

Ability to work in Agile teams.

Experience driving technical discussions.

Ownership mindset and operational accountability.

Experience

Senior Engineer: 7 years of Java development experience.

Experience supporting mission-critical enterprise applications.

Experience working with distributed systems and high-volume processing platforms.

Skills

data-processing,distributed systems,enterprise applications,Java,REST APIs,cloud-native applications,resilient,production support

Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact HRsupport@randstadusa.com.

Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).

This posting is open for thirty (30) days.

Salary : $55 - $65

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