Java - Software Engineer, AI

G2i Inc.; Brasil; Presencial; BRL 203 185 - 474 100; Tempo parcial

Resumo da oferta

G2i Inc. is seeking experienced independent contractors in Brazil for a fully remote software engineering role. Responsibilities include training large language models to write production-grade code and improving the quality of AI-generated code. Candidates need at least 3 years of Java experience, strong attention to detail, and excellent communication skills. Compensation ranges from $30 to $70 per hour depending on location and seniority, with a minimum commitment of 15 hours per week.

Qualificações

• 3+ years of professional software engineering experience in Java.
• Strong logic error detection and performance optimization skills.
• Excellent at explaining technical choices.

Responsabilidades

• Help train large language models (LLMs) for coding tasks.
• Compare and rank code snippets, explaining choices.
• Repair and refactor AI-generated code for quality.

Conhecimentos

Java

Code-review instincts

Attention to detail

Written communication skills

Understanding of documentation

Descrição da oferta de emprego

This role is open to contractors in accepted locations only. Please confirm your country is on the list before applying — we're unable to process applications from unlisted locations. List of accepted countries and locations.

For US applicants

This is a 1099 independent contractor role. It is not compatible with F-1 OPT, STEM OPT, or any visa status that requires W-2 employment, guaranteed hours, or employer sponsorship.

We are unable to provide offer letters or employment verification for this role.

What You'll Be Doing

Help train large language models (LLMs) to write production-grade code across a wide range of programming languages:

• Compare and rank multiple code snippets, explaining which is best and why
• Repair and refactor AI-generated code for correctness, efficiency, and style
• Inject feedback (ratings, edits, test results) into the RLHF pipeline and keep it running smoothly

End result: the model learns to propose, critique, and improve code the way you do.

RLHF in one line

Generate code → expert engineers rank, edit, and justify → convert that feedback into reward signals → reinforcement learning tunes the model toward code you'd actually ship.

What You'll Need

• 3+ years of professional software engineering experience in Java (constraint programming experience is a bonus, but not required)
• Strong code-review instincts — you can spot logic errors, performance traps, and security issues quickly
• Extreme attention to detail and excellent written communication skills. Much of this role involves explaining why one approach is better than another. This cannot be overstated.
• Comfortable reading documentation and language specs, and able to work well in an asynchronous, low-oversight environment

Identity verification

Applicants will be required to verify their identity and confirm they have valid documentation to work as an independent contractor in their country of residence.

What You Don't Need

• No prior RLHF or AI training experience

Logistics

• Location: Fully remote — work from anywhere on the accepted locations list
• Compensation: $30–$70/hr based on location and seniority. Note: the majority of projects run at around $30/hr — higher rates apply to senior profiles and specific project types
• Hours: Minimum 15 hrs/week, up to 40+ hrs/week available — hours vary by project and are not guaranteed week to week
• Payment: Weekly via PayPal or Stripe

Important

Hours are project-dependent and can vary week to week. We recommend keeping other work options open alongside this engagement rather than relying on it as your sole source of income.