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

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

Job summary

OpenTrain AI is seeking focused backend engineers to work remotely on AI coding systems. You’ll assess AI-produced code, design validation checks, and contribute to feature and bug-fix scenarios on a flexible, part-time schedule.

Pay is an hourly-equivalent, $30–$100, per accepted task, with total hours under 20 weekly. This independent contractor role offers high autonomy and exposure to frontier AI tooling.

Qualifications

• Proven backend experience delivering scalable services and APIs.
• Strong knowledge of algorithms and data structures.
• Experience evaluating AI-generated code and writing automated checks.
• Ability to diagnose bugs and explain root causes.

Responsibilities

• Provide backend feature work and bug-fix scenarios for AI coding systems.
• Write automated checks to validate implementations and flag gaps.
• Assess generated code for correctness, performance, and test coverage.
• Diagnose system bottlenecks and explain improvements.

Skills

Backend experience

Java

Node.js

Go

Rust

TypeScript

Python

C++

CS fundamentals

Job description

$30–$100 per hour equivalent, paid per accepted task

Under 20 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 engineering judgment you already have.

The AI coding systems changing how software gets built are trained and tested by real software engineers. The teams developing them need backend engineers to frame feature and bug-fix challenges, assess the code produced, develop checks for the expected behavior, and spell out any shortcomings. 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

• Give AI coding systems backend feature work and bug-fix scenarios to complete
• Write automated checks that pass valid implementations and flag incomplete or incorrect code
• Assess generated code for correctness, performance, test coverage and maintainability
• Diagnose software bugs and system bottlenecks, then explain what needs to improve

Why this is worth your time

• Get paid the equivalent of $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 or Node.js, or using Go, Rust, TypeScript, Python, C++ or a comparable language
• Experience delivering scalable services and APIs, together with strong knowledge of foundational computer science, including algorithms and data structures
• Strong analytical skills, practical problem-solving ability and technical communication skills; helpful experience includes diagnosing flaky tests, working with CI test pipelines or maintaining automated test suites
• 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
• Under 20 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.