Backend Engineer, AI Coding Task Design OpenTrain AI connects experienced professionals with paid, p

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

Benefits offered by this job

Fully remote

Flexible schedule

Job summary

OpenTrain AI is seeking a part-time Backend Engineer to design AI coding tasks for evaluation, verify task results, and ensure secure coding practices. This fully remote role pays per accepted task and offers flexible scheduling, approximately 15 hours per week.

Ideal candidates have strong backend experience with Python/Java/Node.js/Go/Rust/TypeScript/C++, and can build scalable APIs, review code, and communicate effectively in English. No fixed shifts, contractor arrangement.

Qualifications

• Strong backend experience across modern languages and frameworks.
• Proficiency with building scalable APIs/services and debugging.
• Excellent problem solving and technical communication in English.
• Familiarity with secure coding and software security concepts is a plus.

Responsibilities

• Design realistic coding tasks for AI systems.
• Write deterministic verifiers and assess correctness.
• Review code quality and performance of task solutions.
• Apply secure coding practices and perform security review where relevant.

Skills

Backend engineering

Python/Java/Node.js/Go/Rust/TypeScript

APIs & services

Code review

Security awareness

Tools

Python

Java

Node.js

Go

Rust

TypeScript

C++

Job description

OpenTrain AI | REMOTE (US) | Part-time | Backend Engineer, AI Coding Task Design

OpenTrain AI connects experienced professionals with paid, part-time AI training work. We are the hiring company and are actively filling this role.

• $30-$100 per hour equivalent, paid per accepted task
• 100% remote, United States
• About 15 hours/week; choose your schedule

We need backend engineers to design realistic coding tasks for AI systems, write deterministic verifiers, assess correctness and code quality, and apply secure coding and security review where relevant. This work helps improve AI systems that write software.

Ideal background

• Strong professional backend experience with Python, Java, Node.js, Go, Rust, TypeScript, C++ or similar
• Scalable APIs/services, complex features, debugging, bottleneck resolution and code review
• Strong analytical, problem-solving and technical communication skills; professional English
• Helpful: application security, secure coding, vulnerability assessment, penetration testing, OWASP/CWE or security-focused code review
• No AI experience needed; structured task-design guidelines and verification criteria are provided Independent contractor; pay is per accepted task. Fully remote and flexible, with no fixed shifts.