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Freelance Java Backend Developer Jobs in Flemington, NJ

FreshDirect

Sr. Java Backend Developer

Woodbridge, NJ · On-site

$130K - $155K/yr

What You'll Do As a Senior Backend Developer (Java) , you'll help design, develop, and scale backend systems that power FreshDirect's e-commerce and logistics platforms. You'll collaborate with cross ...

FreshDirect

Sr. Java Backend Developer

Woodbridge, NJ · On-site

$130K - $155K/yr

What You'll Do As a Senior Backend Developer (Java) , you'll help design, develop, and scale backend systems that power FreshDirect's e-commerce and logistics platforms. You'll collaborate with cross ...

Monitise

Java Backend Engineer

Berkeley Heights, NJ · On-site

$110K - $186K/yr

Job Title Java Backend Engineer About your role: As a Java Backend Engineer you will code daily, own technical delivery end to end, and raise the bar for the team through strong code reviews ...

Fiserv, Inc.

Java Backend Engineer

Berkeley Heights, NJ · On-site

$110K - $186K/yr

Job Title Java Backend Engineer About your role: As a Java Backend Engineer you will code daily, own technical delivery end to end, and raise the bar for the team through strong code reviews ...

Judge Group, Inc.

Back-end Developer - V

Bedminster, NJ · On-site

$122K - $159K/yr

Our client is currently seeking a Back-end Developer - V Senior Back-end Developer (Java) Contract!W2 This job will have the following responsibilities: * We are seeking a highly skilled Senior ...

PKR

Senior Java Backend Engineer

Philadelphia, PA · Remote

$10 - $100/hr

What Our Client Needs A Senior Java Engineer to design, build, and scale cloud-native services that ... and DevOps teams to improve CI/CD and observability • Participate in code reviews, design ...

Mirai, LLC

Full Stack Java Developer

Philadelphia, PA · On-site

$53 - $68.25/hr

The Developer will be part of a product team of designers and full-stack developers (Java back-end) developing a web and mobile application for use by the Front Line Associates & Managers in the ...

MM International

Java Developer - Backend /Angular

Iselin, NJ · On-site

$51.25 - $66.50/hr

Software Engineer ( Backend) Location: Hybrid 3 times a week in Iselin, NJ. Onsite Interview IV ... Angular (2.0/4.0+) * Core Java * Object Orientation * Spring (Spring Framework) * Restful Web ...

Mirai, LLC

Full Stack Java Developer

Philadelphia, PA

$53 - $68.25/hr

The Developer will be part of a product team of designers and full-stack developers (Java back-end) developing a web and mobile application for use by the Front Line Associates & Managers in the ...

Monitise

Oracle Database Developer

Berkeley Heights, NJ · On-site

$90K - $158K/yr

While your primary expertise lies in database engineering, a strong foundational knowledge of modern Java backend development will allow you to seamlessly bridge the gap between our data and ...

Noom US

Backend Engineer

Princeton, NJ · On-site

$129K - $152K/yr

Write and maintain scalable backend systems using Java and/or Kotlin that support Noom's community of users * Help continuously improve how the engineering team operates About You If you're energized ...

Noom US

Backend Engineer

Princeton, NJ · Hybrid

$129K - $152K/yr

Write and maintain scalable backend systems using Java and/or Kotlin that support Noom's community of users * Help continuously improve how the engineering team operates About You If you're energized ...

Noom US

Lead Backend Engineer

Princeton, NJ · On-site

$179K - $211K/yr

Architect and implement scalable backend systems using Java and/or Kotlin that support Noom's enterprise client base * Help shape and continuously improve how the Engineering team operates About You ...

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Freelance Java Backend Developer information

See Flemington, NJ salary details

$10

$55

$74

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

As of Jul 14, 2026, the average hourly pay for freelance java backend developer in Flemington, NJ is $55.22, according to ZipRecruiter salary data. Most workers in this role earn between $49.09 and $63.65 per hour, depending on experience, location, and employer.
What cities near Flemington, NJ are hiring for Freelance Java Backend Developer jobs? Cities near Flemington, NJ with the most Freelance Java Backend Developer job openings:
Freelance Java Backend Developer jobs near you

Senior Java Backend Developer

MphasiS Corporation USA

Berkeley Heights, NJ • On-site

$125K - $163K/yr

Other

Posted 21 days ago

Job description

Job Description:

We are seeking a Java Backend Resource having 8+ years of professional experience in backend application development, cloud engineering, and enterprise system integration with strong expertise in building, deploying, and supporting APIdriven applications. The candidate must have deep handson experience with Java Backend, K8 Micro Services, Redis, Memcache, Cloud services, and CI/CD pipelines, along with the ability to design scalable, secure, and resilient cloud solutions.

This role requires close collaboration with crossfunctional teams, adherence to DevOps and Agile practices, and ownership of service quality and delivery.

Key Responsibilities

  • Microservices Development: Design, develop, and maintain high-throughput backend services and RESTful / event-driven APIs (Kafka) using Java 17+ and Spring Boot.
  • Cloud-Native Deployment: Deploy and manage applications in Kubernetes (K8s) environments, ensuring scalability and high availability.
  • Caching & Optimization: Implement caching strategies using Redis or Memcached to minimize database load and optimize performance.
  • Event-Driven Systems: Work with messaging systems (e.g., Kafka) to create asynchronous, event-driven architectures.
  • Database Management: Maintain database schemas and write optimized queries for SQL (PostgreSQL, MySQL) and NoSQL (Cassandra, MongoDB) databases.
  • CI/CD & DevOps: Collaborate on CI/CD pipelines (ArgoCD, Jenkins, Artifactory, DevSecOps) and monitor services using observability tools

Mandatory Technical Skills & Competencies

  • Functional Domain: Good understanding of Core Domain Services areas like Real-time Transaction Processing, Customer and Account Management, AML, KYC, GDPR, CCPA, Payment processing, Channel Banking, General Ledger
  • Language: Expertise in Java and Spring Boot framework.
  • Architecture: Strong experience building, testing, and troubleshooting Microservices.
  • Infrastructure: Hands-on experience with Docker and Kubernetes (K8s), Containerized application deployment concepts, Configuration, scaling, and environment management awareness
  • Caching Technologies: Experience managing data storage/caching with Redis or Memcached.
  • Database: Proficient in SQL and NoSQL database design.
  • Tooling: Familiarity with Git, Maven/Gradle, and CI/CD tools like (ArgoCD, Jenkins, Artifactory, DevSecOps), Source control, branching strategies, merge requests, CI/CD pipeline configuration and automated deployments, Environment-based deployments and rollback strategies
  • Experience with AWS, Azure, or Google Cloud Platform services.
  • Knowledge of monitoring tools such as Prometheus, Grafana, or ELK stack.
  • Understanding of distributed tracing and logging.
  • Cloud concepts like fundamentals, App Configuration / App Settings, Key Vault, Cache, Service Bus (queues/topics), Event driven architecture, Blob Storage, cloud security, scalability, and resiliency patterns
  • Microservice Development
    • Microservice design and implementation
    • Middleware, filters, exception handling, and logging
    • Authentication and authorization (JWT/OAuth concepts)
    • Performance optimization and secure coding practices
  • Agile and Collaboration Tools: Sprint planning, work item tracking, and agile delivery, Technical documentation and knowledge sharing

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