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Per Diem Remote Java Backend Developer Jobs in Castle Rock, CO

DataAnnotation

Software Developer - AI Trainer

Lakewood, CO · On-site +1

$50 - $100/hr

Contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and ... front-end, back-end, full-stack, machine learning, and other engineers -- who are driving real ...

DataAnnotation

Software Developer - AI Trainer

Aurora, CO · On-site +1

$50 - $100/hr

Contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and ... front-end, back-end, full-stack, machine learning, and other engineers -- who are driving real ...

Clerkie

Software Engineer Internship

Denver, CO · On-site +1

$80/hr

Clerkie is a remote-first company, with over 40 employees spanning 4 time zones across the United ... You'll work across the full stack, collaborating with engineers on frontend, backend, and ...

Synergetics

Software Engineer II (Remote)

Denver, CO · Remote

$90K - $110K/yr

You will also contribute to DevOps activitiesincluding CI/CD automation, infrastructure as code ... Familiarity with other frontend frameworks (React, Vue) and backend technologies. * Previous work ...

Clerkie

Full-Stack Engineer

Denver, CO · Remote

$90/hr

Clerkie is a remote-first company, with over 40 employees spanning 4 time zones across the United ... Scaled backend systems to support growing enterprise usage * Built new infrastructure to support ...

Booz Allen Hamilton, Inc.

Software Engineer

Aurora, CO · On-site +1

$69K - $158K/yr

Remote Work: No Job Number: R0245493 Location: Aurora,CO,US Share job via: Share Software Engineer ... Ability to use back-end and front-end languages to develop complete solutions * TS/SCI clearance ...

Revolutional, LLC

Full Stack Engineer

Denver, CO · Remote

$110/hr

Remote Terms: Full-time Salary Range: $110-160k DOE Clearance: Qualified candidates must be US ... The Full Stack Engineer will develop, test, and maintain applications using Java and modern web ...

Booz Allen Hamilton, Inc.

Software Engineer

Aurora, CO · On-site +1

$69K - $158K/yr

Remote Work: No Job Number: R0241805 Location: Aurora,CO,US Share job via: Share Software Engineer ... Ability to use back-end and front-end languages to develop complete solutions * TS/SCI clearance ...

Horizontal Talent

Sr. Optimizely Developer

Denver, CO · Remote

$118K - $155K/yr

Strong backend development skills with C# and .NET Core/MVC, especially in Optimizely CMS ... Experience working in remote-first environments and collaborating across multiple locations.

Revolutional, LLC

Senior Full Stack Engineer

Denver, CO · Remote

$130K - $185K/yr

Remote Terms: Full-time Salary Range: $130K-185k DOE Clearance: Qualified candidates must be US ... The Full Stack Engineer will develop, test, and maintain applications using Java and modern web ...

Fivetran

Staff Software Engineer, Metadata

Denver, CO · Remote

This is a full-time, remote position. We do expect the successful candidate to come to the Denver ... Proficiency in a modern backend or systems language such as Python, Java, C++, or C# * Hands-on ...

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Per Diem Remote Java Backend Developer information

See Castle Rock, CO salary details

$10

$56

$76

How much do per diem remote java backend developer jobs pay per hour?

As of Sep 9, 2026, the average hourly pay for per diem remote java backend developer in Castle Rock, CO is $56.97, according to ZipRecruiter salary data. Most workers in this role earn between $50.62 and $65.67 per hour, depending on experience, location, and employer.
Per Diem Remote Java Backend Developer jobs near you

Software Developer - AI Trainer

Lakewood, CO • On-site, Remote

DataAnnotation
Computing Infrastructure Providers, Data Processing, Web Hosting • 10K+ employees
Learn more about DataAnnotationexternal

$50 - $100/hr

Contractor

Posted 10 days ago

Job description

About the job:

Contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule.

We are looking for an existing Coder (this is an opportunity to work with us as an independent contractor) to help advance AI development. As a DataAnnotation’s coder, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development.

Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of-the-art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve.

To get started, once you sign up for an account, you'll take a short assessment (this serves as our version of an interview). If you pass that assessment, you’ll receive an email confirmation, and paid work will become available to you through our platform.

Advantages of contracting with us:

  • You'll be able to choose which projects you want to work on and when
  • You work on your own schedule, on your own computer, from the comfort of your own home
  • Projects are paid hourly starting at $50-$100+/hr, with bonus rates available on some projects

Responsibilities:

  • Give AI chatbots coding challenges and evaluate their outputs
  • Evaluate the quality produced by AI models for correctness and performance

Qualifications:

  • Fluency in English (native or bilingual level)
  • Detail-oriented
  • Experience with algorithms, data structures, and debugging workflows
  • A current, in progress, or completed Bachelor's is preferred but not required

Note:

Payment is made via PayPal. We will never ask for any money from you. PayPal will handle any currency conversions from USD. This job is only available to those in the US, Canada, UK, Ireland, Australia, and New Zealand. Those located outside of these countries will not see work or assessments available on our site at this time. This is an independent contractor position.

#coder

Working at DataAnnotation

Perks for workers

  • Work From Anywhere

  • Set Your Own Hours

  • Competitive Pay

  • Learn Valuable AI Skills

  • No Meetings. No Commute.

  • Work on Your Schedule

  • Make a Real-World Impact

What to expect from working at DataAnnotation

From DataAnnotation

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