Language Alignment & Resource Partner (Portuguese) - Freelance AI Trainer Project

Invisible Technologies Inc.; United States; Remote; USD 54,000 - 90,000; Part time

Job summary

Invisible Technologies seeks independent contractors to perform Portuguese language QA for AI data projects. You will annotate and vet outputs for grammatical accuracy, naturalness, and cultural context, working remotely.

Contractors will transform feedback and trends into educational resources, supporting ongoing alignment improvements across AI task outputs. This freelance role emphasizes linguistic precision and autonomy in a remote setting.

Qualifications

• Demonstrable work or educational experience in linguistics, education, or other fields requiring high attention to linguistic detail.
• Prior, tangible experience working in human data evaluation or annotation.
• Verified Portuguese language proficiency of C1 or C2
• The ability to confidently transform raw feedback and quality trends into structured, actionable educational resources.
• A meticulous approach to language, with the sharpness to identify and correct even the most subtle unnatural phrasing in their native tongue.

Responsibilities

• Data Annotation & Review: Reviewing, annotating, and testing AI outputs for grammatical accuracy, naturalness, and strict cultural context.
• Quality Assurance & Vetting: Acting as a primary quality check during production to proactively identify and correct subtle cultural errors or awkward phrasing in the target language.
• Resource Generation: Analyzing task quality trends and autonomously developing educational resources and feedback documentation to increase alignment between AI task outputs and campaign expectations.
• Production & Vetting Support: Providing native-level language vetting during project scaling and offering specialized linguistic consultation throughout the production phase.

Skills

Portuguese proficiency

Linguistic detail

Data annotation

Quality assurance

Cultural nuance

Education

Linguistics background

Job description

Project Overview

We are sourcing independent Language Alignment & Resource Partners (LARPs) to provide native-level Portuguese language vetting and QA for a specialized AI data project. As AI systems strive to reflect real-world usage and deliver human-like communication, their accuracy depends entirely on rigorous linguistic and cultural consultation. The objective of this project is to evaluate, annotate, and validate data to ensure high-quality outputs that are fully natural, polished, and free from bias.

Project Deliverables & Scope

Operate autonomously to provide linguistic QA and develop alignment resources. Expected deliverables include:

• Data Annotation & Review: Reviewing, annotating, and testing AI outputs for grammatical accuracy, naturalness, and strict cultural context.
• Quality Assurance & Vetting: Acting as a primary quality check during production to proactively identify and correct subtle cultural errors or awkward phrasing in the target language.
• Resource Generation: Analyzing task quality trends and autonomously developing educational resources and feedback documentation to increase alignment between AI task outputs and campaign expectations.
• Production & Vetting Support: Providing native-level language vetting during project scaling and offering specialized linguistic consultation throughout the production phase.

Required Expertise

To successfully fulfill the deliverables of this project, Contractors must possess a meticulous eye for language and cultural nuance.

Core skillset includes:

• Demonstrable work or educational experience in linguistics, education, or other fields requiring high attention to linguistic detail.
• Prior, tangible experience working in human data evaluation or annotation.
• Verified Portuguese language proficiency of C1 or C2
• The ability to confidently transform raw feedback and quality trends into structured, actionable educational resources.
• A meticulous approach to language, with the sharpness to identify and correct even the most subtle unnatural phrasing in their native tongue.

Service Fees

We offer a pay range of $6-to-$65 per hour, with the exact rate determined after evaluating your experience, expertise, and geographic location. Final offer amounts may vary from the pay range listed above. As a contractor you’ll supply a secure computer and high-speed internet; company-sponsored benefits such as health insurance and PTO do not apply.

Engagement Type: Freelance / Independent Contractor

Workplace Type: Remote