Backend Software Engineer for AI Coding Tasks

OpenTrain AI, Inc.; United States; Hybrid; USD 69,000 - 138,000; Part time

Job summary

OpenTrain AI, Inc. is seeking entry-level backend contractors to design and evaluate coding tasks for AI training. You will build scalable services, create reproducible evaluation environments, and write deterministic verifiers and reference solutions.

You do not need prior AI experience. Strong English, hands-on coding in Python/Java/Rust/Go/C++, and a public GitHub portfolio are highly valued. This is a part-time, hourly role with global remote options.

Qualifications

• Entry-level backend role for AI coding evaluation; no AI experience required.
• Professional fluency in English and strong written communication.
• Hands-on expertise in backend languages and building scalable services.

Responsibilities

• Create realistic coding problems for AI training across bug fixes, features, refactors and performance tasks.
• Build reproducible environments and deterministic verifiers; provide reference solutions.
• Review technical submissions, document reasoning, and improve large or legacy codebases for scalability.

Skills

Python

Java

Rust

Go

C++

TypeScript

Node.js

APIs

Code review

GitHub

Tools

GitHub

Job description

The work

You will create realistic coding problems for AI training. These tasks test whether models can fix bugs, add features, refactor code, and improve performance.

You will also build reproducible environments, deterministic verifiers, and reference solutions. The work includes reviewing technical submissions and documenting the reasoning behind solutions.

• Create coding tasks for feature implementation, bug fixing, refactoring, and performance optimization.
• Build reproducible reinforcement learning environments for coding evaluation.
• Write deterministic verifiers that accept valid solutions and reject incorrect ones.
• Produce reference solutions for each coding problem.
• Analyze complex defects and performance bottlenecks.
• Improve large or legacy codebases with scalable, maintainable features.
• Document technical reasoning and solution approaches for AI training data.
• Review technical submissions for accuracy and clarity.

What it pays and takes

This is an entry-level, part-time contractor role focused on backend software engineering and AI coding evaluation. Previous AI experience is not required.

• $50 to $100 per hour equivalent, paid per task that meets project specifications.
• Less than 20 hours per week.
• Location: Open to candidates in Algeria, Argentina, Austria, Bahrain, Bangladesh, Belgium, Brazil, Canada, Chile, Colombia, Denmark, Egypt, France, Germany, Ghana, Greece, India, Indonesia, Italy, Japan, Jordan, Kazakhstan, Kenya, Kuwait, Kyrgyzstan, Lebanon, Malaysia, Mexico, Morocco, the Netherlands, Nigeria, Oman, Pakistan, Palestinian Territories, Peru, the Philippines, Portugal, Qatar, Saudi Arabia, Singapore, South Africa, Spain, Sri Lanka, Switzerland, Taiwan, Thailand, Tunisia, the United Arab Emirates, the United Kingdom, the United States, Uzbekistan, and Vietnam.
• Professional fluency in English.
• Hands-on expertise in Python, Java, Rust, Go, C++, TypeScript, Node.js, or a similar backend language.
• Experience building scalable services and APIs, debugging software, writing automated tests, and applying algorithms and data structures.
• Experience resolving performance bottlenecks and refactoring large or legacy codebases.
• Strong code review, documentation, analytical, and technical communication skills.
• Clear open-source contributions or an equivalent portfolio that demonstrates coding ability.
• Experience delivering backend features across cross-functional projects and strong public GitHub work are helpful.

About AI Training Work

AI training work uses examples and human reviews to help artificial intelligence systems learn how to respond and perform tasks. OpenTrain is where people find these projects, build a profile, and start applications, while experienced contributors can qualify for specialized coding work.