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Freelance Remote Java Backend Developer Jobs in California

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Physics PhD - Expert Trainer

San Francisco, CA · Remote

$75 - $100/hr

... Freelance, Remote) Software Engineer, Python - AI Training (Freelance, Remote) San Francisco, CA $190,000.00 - $300,000.00 7 months ago Machine Learning Engineer, NeRF / Gaussian Splatting Coders ...

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Physics PhD - Expert Trainer

San Francisco, CA · Remote

$75 - $100/hr

... Freelance, Remote) Software Engineer, Python - AI Training (Freelance, Remote) San Francisco, CA $190,000.00 - $300,000.00 7 months ago Machine Learning Engineer, NeRF / Gaussian Splatting Coders ...

ALSO

Staff Cloud Backend Developer

Palo Alto, CA · On-site +1

$170K - $210K/yr

Backend Developer We're ALSO, an electric mobility company originally conceived as a part of Rivian ... remote devices. * Proven ability to design, ship, and operate production systems from scratch.

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Math PhD - Expert Trainer

San Francisco, CA · Remote

$75 - $100/hr

... Freelance, Remote)Education Expert (Master's) - AI TrainerMathematics Instructor (Part-Time Faculty Pool)Education Expert (Master's) - AI TrainerComputer Programming Instructor Summer Camp ...

Arlo Technologies, Inc.

Staff Backend Engineer

Milpitas, CA · On-site +1

$155K - $225K/yr

Staff Back-End Developer Location: Milpitas, CA (hybrid) The digital landscape continues to evolve ... Hands-on experience with Java * Experience working with AWS cloud services * Experience with Git ...

Arlo Technologies, Inc.

Staff Backend Engineer

Milpitas, CA · On-site +1

$155K - $225K/yr

Staff Back-End Developer Location: Milpitas, CA (hybrid) The digital landscape continues to evolve ... Hands-on experience with Java * Experience working with AWS cloud services * Experience with Git ...

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Freelance Remote Java Backend Developer information

What are the key skills and qualifications needed to thrive as a Freelance Remote Java Backend Developer, and why are they important?

To thrive as a Freelance Remote Java Backend Developer, you need strong proficiency in Java, backend frameworks (such as Spring Boot), API development, and a solid understanding of databases, often supported by a degree in computer science or equivalent experience. Familiarity with tools like Git, Docker, cloud platforms (AWS, Azure), and CI/CD pipelines is typically required, and relevant certifications can be advantageous. Excellent problem-solving abilities, clear communication, and self-motivation help you deliver high-quality solutions and collaborate effectively with clients or distributed teams. These skills and qualities are crucial for delivering robust, scalable backend systems efficiently and maintaining client satisfaction in a remote freelance environment.

What are some common challenges faced by freelance remote Java backend developers, and how can they be addressed?

Freelance remote Java backend developers often encounter challenges such as managing communication across time zones, maintaining consistent code quality, and integrating smoothly with distributed teams. To address these, it’s important to establish clear communication channels, use collaboration tools like Slack or Jira, and adhere to standardized coding and documentation practices. Regularly syncing with the client and proactively sharing updates can help ensure alignment and reduce misunderstandings.

What does a Freelance Remote Java Backend Developer do?

A Freelance Remote Java Backend Developer is a software professional who specializes in building and maintaining the server-side logic, databases, and APIs for web or mobile applications, primarily using the Java programming language. Working remotely, they collaborate with clients or teams from different locations to deliver backend solutions that ensure the application's performance, scalability, and security. Their responsibilities often include designing and implementing RESTful APIs, integrating with third-party services, fixing bugs, and optimizing backend processes. As freelancers, they typically manage their own schedules and work with multiple clients or projects.
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Infographic showing various Freelance Remote Java Backend Developer job openings in California as of May 2026, with employment types broken down into 100% Full Time. Highlights an 100% Remote job distribution.
Backend Developer, Remote

Backend Developer, Remote

Active Theory

Los Angeles, CA • Remote

Full-time

Posted 24 days ago

Job description

Company Description

Active Theory is based in Los Angeles and Amsterdam with a globally distributed team. We strive to make some of the best digital experiences on the web, and we're growing.

Our Dreamwave product creates bespoke virtual events connecting people online. Recent Dreamwave events over the last year have included Sundance Film Festival, a virtual music festival for Porter Robinson, and high-profile tech conference Inbound.

Job Description

Active Theory is seeking a backend developer and DevOps hybrid to help build out the underlying tech infrastructure behind our Dreamwave events platform.

This person will work on:

  • Backend development primarily in Node.js working closely with GCP and Firebase services - Cloud Functions, Cloud Firestore, Firebase Realtime Database.
  • Architect, prototype, scope and develop backend components for each project. Requirements can vary significantly with each project, particular creative execution, and technical requirements.
  • Collaborate and communicate with small, multidisciplinary teams together with frontend developers, designers, 3D artists, and producers to develop backend features.
  • Work independently on small to medium projects, support tech leads on small teams on larger projects.
  • Plan technical approach and develop custom integrations as required - such as with payments, CRM, ticketing, and content management systems such as Sanity.io.
  • Manage cloud infrastructure on GCP that scale. Support live events and ensure server resources are running smoothly, load tested, and optimized for expected traffic.
  • Learn, champion, and build upon Medusa, our backend framework, to continually improve functionality and maintain a library of reusable modules.
  • Work closely with backend and platform teams to continually evolve, improves practices and processes, and drive the platform forward.
Qualifications
  • 3 years minimum developing secure, scalable, production ready web applications in Node.js.
  • Experience with Google Cloud Platform and services, including Firebase - Compute Engine, Cloud Firestore, Firebase Realtime Database, Cloud Functions.
  • Familiar with multiplayer and asynchronous concepts, state management and data flows.
  • Experience designing and implementing database schemas for maintainability, performance, and scale.
  • Ability to manage your time and communicate effectively while working remotely.
  • Ability to work independently and carry a project.
Additional Information

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

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