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Java Developer for AI Training and Code Evaluation

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Job details

Engagement

Contract, part-time

Location

Remote

11 countries

Posted

Aug 5, 2026

OpenTrain on Trustpilot

The work

Help train and evaluate AI systems by preparing Java examples, building and correcting solutions, and assessing code produced by AI.

  • Review code for quality, efficiency, scalability, and reliability.
  • Work with Java and other languages, including Python, JavaScript with ReactJS, C/C++, Rust, and Go.
  • Build verification agents to identify error patterns and assess code quality.
  • Design automated ways to check solutions to software engineering tasks.
  • Evaluate model performance across architecture, API design, production implementation, monitoring, and operational maintenance.
  • Write clear, structured reasons for your technical evaluations.

Requirements

  • Hours: At least 20 hours per week.
  • Engagement: Flexible, part-time contractor work for an initial one-month period, with possible extensions based on performance and fit.
  • Language: Fluent in English.
  • Experience: At least three years of software engineering experience.
  • Skills: Strong full-stack development experience building scalable, production-grade software; deep knowledge of architecture, design, development, debugging, and code review; primary proficiency in Java; and experience with Python, JavaScript, C/C++, Rust, or Go.
  • Skills: Python, JavaScript, Java, C++, Rust

Open to applicants in

  • Austria
  • Belgium
  • Canada
  • France
  • Germany
  • Liechtenstein
  • Luxembourg
  • Monaco
  • Netherlands
  • Switzerland
  • United States

How to apply

  1. Press Apply now. You create a free OpenTrain account and add your resume.
  2. Finish your application on the hiring company's site. The company decides who it hires, so it runs its own form.

Job ID: cmsg0j6ws003f04jo0h47d30y

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