Top 4159 Back end developer Jobs in Freelance

Back End Developer - AI Trainer
DataAnnotation —Oyster Bay Cove, NY
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Back End Developer - AI Trainer
DataAnnotation —Tysons, VA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Junior Developer
Naylor LLC —Remote
- Full-time
- Remote
- Communication skills
- Entry level
- Under 1 year
- Paid holidays
- Health insurance
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Senior .Net Developer
Sanametrix —Remote
- $150,000 - $160,000 a year
- Full-time
- Remote
- Computer Science
- Bachelor of Science
- SQL
- Health savings account
- Health insurance
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MuleSoft Developer
Gridiron IT Solutions LLC —Remote
- $50 - $65 an hour
- Full-time
- Remote
- Mid-level
- Scripting
- Health savings account
- AD&D insurance
Quick Apply
3d
Java Developer (Remote Permanent Opportunity)
NTENT —Remote
- Remote
- Mid-level
- Windows
- Bachelor's degree
Quick Apply
UI/UX Developer (Remote)
AEFIS —Remote
- Full-time
- Remote
- Mid-level
- Bachelor's degree
- Communication skills
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Application Developer
Lee Enterprises —Remote
- Full-time
- Remote
- Azure
- System design
- Mid-level
- Paid parental leave
- Disability insurance
Quick Apply
BACK END DEVELOPER
Wyth.me —Arlington, VA
- Email
- Remote
- APIs
- Communication skills
- Entry level
Software Developer
SDH Systems —Remote
- $103,002 a year
- Full-time
- Remote
- Computer Science
- Mid-level
- Bachelor's degree
Migrate a custom PHP magazine website to WordPress (content + images + SEO redirects)
Exclusive Magazine —Remote
- From $100 a day
- Temporary
- Remote
- Mid-level
Quick Apply
5d
Associate Software Developer
DarioHealth —Remote
- SQL
- Analysis skills
- Communication skills
Quick Apply
Full-Stack Engineering (Python and React only) -Contractor Role – PIU Based Compensation (No Salary)
FactfindersPro —Remote
- Full-time
- Remote
- Java
- AWS
- US work authorization
- Flextime
- Work from home
Quick Apply
Software Engineer, Billing (all levels)
Render —Remote
- $170,000 - $290,000 a year
- Full-time
- Remote
- Mid-level
- 3 years
- SQL
- Commuter assistance
- Paid parental leave
Dotnet API Developer
Excel Global Solutions —Remote
- $35 - $40 an hour
- Contract
- Remote
- English
- Mid-level
- SQL
Quick Apply
10h
Junior Full Stack Developer
e.Republic —Remote
- $80,000 a year
- Full-time
- Remote
- Salesforce
- Mid-level
- SQL
Quick Apply
Contract Frontend Developer
Sosolimited —Remote
- $100 - $150 an hour
- Contract
- Remote
- Mid-level
- AWS
- Project management
- Health insurance
- Paid time off
Frontend Developer - HTML
AppMySite —Remote
- Full-time
- Remote
- Mid-level
- JavaScript
- Communication skills
Technical Consultant - RTSM (Remote)
Veeva Systems —Remote
- $75,000 - $150,000 a year
- Full-time
- Remote
- Mid-level
- Analysis skills
- Bachelor's degree
- Paid holidays
- Health insurance
Frontend Developer
Third and Grove —Remote
- Full-time
- Remote
- Mid-level
- US work authorization
- Paid parental leave
- Disability insurance
Quick Apply

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Back End Developer - AI Trainer

DataAnnotation -
Oyster Bay Cove, NY

Quick Apply

Job Details

Part-time | Full-time | Contract
$50 - $100 an hour

Benefits

Flexible schedule

Qualifications

English

Full Job Description

DataAnnotation is committed to creating quality AI. Help train AI chatbots while gaining the flexibility of remote work and choosing your own schedule.

We are looking for an existing Back End Developer - AI Trainer to help train AI models. 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. You can fit this work alongside a full-time role, or treat it as your primary focus, choosing projects and schedules that align with your availability and goals.

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:

Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule: choose which projects you take on and when you work, on your own computer, from the comfort of your own home.
Competitive pay: projects are paid hourly at $50 to $100 USD per hour. Opportunities for higher bonus rates available for certain projects.
Impact: help shape the future of AI technologies.

Responsibilities:

Design and solve diverse coding problems used to train AI systems.
Write clear, high-quality code snippets and detailed explanations.
Evaluate AI-generated code for accuracy, performance, and clarity.
Provide feedback that directly shapes the next generation of AI models.

Qualifications:

Fluency in English (native or bilingual level).
Proficiency in at least one of the following programming languages or frameworks: JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, Kotlin, or Swift.
Excellent writing and grammar skills.
A bachelor's degree (completed or in progress).
Previous experience as a Software Developer, Coder, Software Engineer, or Programmer is preferred.

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.

Quick Apply

Refine Your Search

back end developer jobs in freelance

Back End Developer - AI Trainer

Back End Developer - AI Trainer

Junior Developer

Senior .Net Developer

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Java Developer (Remote Permanent Opportunity)

UI/UX Developer (Remote)

Application Developer

BACK END DEVELOPER

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Associate Software Developer

Full-Stack Engineering (Python and React only) -Contractor Role – PIU Based Compensation (No Salary)

Software Engineer, Billing (all levels)

Dotnet API Developer

Junior Full Stack Developer

Contract Frontend Developer

Frontend Developer - HTML

Technical Consultant - RTSM (Remote)

Frontend Developer

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