Backend, Part-Time AI Coding Task Creation - Remote (United States)

OpenTrain AI; United States; Remote; USD 41,000 - 138,000; Part time

Benefits offered by this job

Fully remote

Flexible scheduling

Independent contractor

Job summary

OpenTrain AI is seeking experienced backend engineers for remote, flexible, part-time work designing realistic coding scenarios for AI systems. You will craft backend tasks, write reference answers and tests, and assess AI outputs while explaining gaps and bottlenecks.

Join a frontier team shaping how software is built with cutting-edge AI training systems. About 15 hours weekly, fully remote within the United States; performance-based per-task pay, with a wide hourly range reflecting expertise.

Qualifications

• Proficient backend engineering with experience in building scalable services.
• Ability to design robust backend tasks around features or bug fixes.
• Experience writing reference answers and test suites to validate AI outputs.
• Strong review and debugging skills, including performance analysis and refactoring.

Responsibilities

• Design backend tasks to add features or fix bugs in the system.
• Write reference answers and test suites to differentiate correct/incorrect submissions.
• Review AI-generated solutions for correctness and quality.
• Explain shortcomings with debugging and performance analysis.

Skills

Backend development

API design

Java

Node.js

Go

Python

TypeScript

C++

Algorithms

Automated testing

Tools

Docker

CI/CD

Git

Testing frameworks

Job description

• $30–$100 per hour equivalent, paid per accepted task
• About 15 hours a week, you choose when

Work on the cutting edge of AI coding systems, on your own schedule, and get paid for the backend expertise you already have.

The AI coding systems changing how software gets built are trained and tested by real engineers. The teams building them need backend engineers who can design realistic coding scenarios, assess whether an AI solution works and meets professional standards, prepare the answer and tests an expert would provide, and explain exactly where the AI falls short. Your judgment becomes part of how the next generation of coding systems works. This is that work, done remotely around your current job.

What you’ll do

• Design backend tasks around adding features or fixing software bugs
• Write the reference answer and test suite, checking that correct submissions pass while incorrect ones fail
• Review AI-generated solutions for correctness and code quality
• Explain where solutions fall short using debugging, performance analysis, testing and refactoring skills

Why this is worth your time

• Get paid $30–$100 an hour to build real AI skills, on top of your current job
• Work directly with frontier AI coding tools and see how they are built, tested and improved, experience most software engineers will not have for years
• Build a career edge for what comes next: AI is reshaping software engineering, and the engineers who understand it from the inside will lead that change
• Fully remote, fully flexible, no minimum shift, no commute

Who this is for

• Professional backend experience using Java, Node.js, Go, Rust, TypeScript, Python, C++ or a similar language
• Experience implementing complex features, diagnosing bugs, and resolving system bottlenecks in scalable services and APIs
• Fluent in English and strong in algorithms and data structures, automated testing, code review and refactoring
• No AI experience needed. You bring the expertise; we bring the training on the tools.

Pay and details

• $30–$100 per hour equivalent; pay is per accepted task, as an independent contractor
• About 15 hours a week, you choose when; fully remote, United States

About OpenTrain AI

OpenTrain AI connects experienced professionals with paid, part-time AI training work: shaping and improving the AI systems that companies are building right now.