1

Freelance Java Backend Developer Jobs in Orange, CA

Sr. Java Engineer - Application & Services

Irvine, CA · On-site

$150 - $200/hr

  • Medical

  • Dental

  • Vision

  • Retirement

Optimize backend systems for performance, scalability, and cost-efficiency. * Implement robust ... Strong proficiency in backend programming language Java and frameworks like SpringBoot.

New

Senior Backend Software Engineer

Los Angeles, CA

$167K - $230K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As a backend engineer on this team, you will design and scale the services behind order ... Design, build, and maintain Java backend services for order lifecycle, payments, device sync, and ...

Senior Backend Software Engineer

Los Angeles, CA · On-site

$167K - $230K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As a backend engineer on this team, you will design and scale the services behind order ... Design, build, and maintain Java backend services for order lifecycle, payments, device sync, and ...

As a Senior Backend Engineer on the Xumo Software Engineering Team, you will play a key role in ... Java Application Development for Video Streaming Backend Systems * Develop backend systems for ...

Sr. Backend Engineer - Xumo

Irvine, CA · Remote

$141K - $189K/yr

As a Senior Backend Engineer on the Xumo Software Engineering Team, you will play a key role in ... Java Application Development for Video Streaming Backend Systems * Develop backend systems for ...

Sr. Backend Engineer - Xumo

Irvine, CA · On-site

$142 - $189/hr

As a Senior Backend Engineer on the Xumo Software Engineering Team, you will play a key role in ... Java Application Development for Video Streaming Backend Systems Develop backend systems for video ...

As a Senior Backend Engineer on the Xumo Software Engineering Team, you will play a key role in ... Java Application Development for Video Streaming Backend Systems * Develop backend systems for ...

Java Developer

Irvine, CA · On-site

$54.75 - $70.75/hr

Develop backend services and APIs using Java-based frameworks * Build and enhance frontend ... Collaborate with engineering teams through: * Code reviews * Agile ceremonies * Design discussions

Showing results 21-40

Freelance Java Backend Developer information

See Orange, CA salary details

$10

$58

$78

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

As of Aug 20, 2026, the average hourly pay for freelance java backend developer in Orange, CA is $58.36, according to ZipRecruiter salary data. Most workers in this role earn between $51.88 and $67.26 per hour, depending on experience, location, and employer.

What cities near Orange, CA are hiring for Freelance Java Backend Developer jobs?

Cities near Orange, CA with the most Freelance Java Backend Developer job openings:

Java Developer (CCDI Operations / Backend) (Mid-Level) - Bilingual in Korean/English

SBT Global, Inc.

Irvine, CA • On-site

$100K/yr

Full-time

Re-posted 4 days ago


Job description

Company Description
JAVA Developer (CCDI Operations / Backend) (Mid-Level)
  • On-site role (Mandatory)
  • Contract position (Start: July, Minimum 1 year)
  • Compensation: $100K+ DOE

Position Overview
We are seeking Mid-Level Backend Developers to support CCDI operations and development.
This role involves CI/CD management, MSA-based deployments, backend development, data processing, Kafka-based event streaming, and database integration/migration work.
Strong English communication skills are required.
Job Description
  • Manage and operate CI/CD pipelines (Kubernetes, MSA deployment & release management)
  • CCDI core backend development and system enhancements
  • Backend development using Java / Python
  • Database integration with PG, Oracle, MongoDB, and Redis
  • Kafka event streaming (consumer/producer development and optimization)
  • MongoDB batch processing (data deletion, legacy data migration)
  • Support EAI and database migration (BLODS, PKTMS, TODS)
  • Support Informatica migration activities
  • Provide production on-call support (average 10.8 hours/day operational coverage)
  • System monitoring, incident response, and KUS VOC support
  • Code review and QA governance
  • Additional system integration/support tasks (MQTT, ISS, JP, etc.)

Qualifications
  • Experience in Java / Python development
  • Experience with Oracle, MongoDB, Redis, and PG database integration
  • Experience with Kubernetes and CI/CD environments
  • Experience with MSA-based systems
  • Backend development and production support experience
  • Strong English communication skills (required)

Preferred Qualifications
  • Experience in large-scale enterprise system operations
  • Experience with database or legacy system migration
  • Experience with Kafka-based event streaming
  • Experience with EAI or Informatica migration
  • Experience in production support or 24/7 environments

Additional Information
All your information will be kept confidential according to EEO guidelines.