[Hiring] Java Coding Specialist - Freelance AI Trainer Project @Invisible Agency

Role Description

Are you a Java expert who can spot a flawed abstraction from across a codebase? Large-scale language models are evolving from clever chatbots into engines of real scientific and engineering progress. High-quality training data is what separates a capable model from a genuinely useful one. That data starts with people who actually know the craft.

We're looking for Java specialists with deep fluency in:

• Object-oriented design
• Concurrency
• JVM internals
• Data structures
• Algorithms
• System architecture

You'll put advanced language models through their paces on Java problems spanning a wide range of difficulty and complexity, assessing whether model-generated solutions are:

• Correct
• Well-reasoned
• Production-quality

This means evaluating not just whether code runs, but whether:

• It's the right approach
• Edge cases are handled
• The reasoning behind it holds up

You'll review Java problems and model-generated solutions, judge correctness and code quality, identify where the model's logic breaks down, and document failure patterns clearly enough that others can act on them. You may also flag whether a given problem is well-specified and appropriately challenging for training purposes.

Qualifications

• Bachelor's, master's, or PhD in computer science, software engineering, or a closely related field
• Real-world Java experience
• Competitive programming
• Open-source contributions
• Technical writing

The ability to clearly articulate why a solution is wrong or weak, not just that it is, matters as much as the technical depth.

Requirements

• Ability to assess model-generated solutions for correctness and quality
• Experience in evaluating Java problems
• Strong documentation skills for failure patterns

Benefits

• Pay of $45 per hour for candidates who successfully pass preliminary Java-focused assessments
• Contractor role with remote workplace type
• Supply your own secure computer and high-speed internet
• Company-sponsored benefits such as health insurance and PTO do not apply