Project Epsilon - Portuguese (Brazil) Quality Control Specialist

About the Role 
We are looking for detail-oriented Quality Control (QC) Specialist to support an AI data annotation project. In this role, you will review the work submitted by Trainers — pre-seeded questions paired with images and their corresponding "golden" answers — to confirm accuracy, consistency, and adherence to project guidelines. 
This is a task-based, remote-friendly opportunity ideal for individuals who are highly meticulous, observant, and skilled at spotting errors or inconsistencies that others may miss. 
What You'll Do 
Review completed tasks submitted by Trainers, including the original question, the image, and the golden answer provided 
Independently verify whether the golden answer is correct based on the image 
Identify and flag incorrect, incomplete, ambiguous, or inconsistent answers 
Provide clear, constructive feedback or corrections to help maintain overall data quality 
Track recurring error patterns and report them to the project team 
Ensure Trainer output meets the project's quality bar before final sign-off 
Escalate unclear cases (e.g., illegible images, ambiguous questions) to the project team for resolution 
What We're Looking For 
Native/Strong proficiency at Portuguese   
Bachelor's degree required  
Excellent attention to detail and a strong quality mindset 
Good visual observation and reading comprehension skills 
Ability to apply guidelines/rubrics consistently and objectively 
Strong written English communication skills, especially for giving feedback 
Prior experience in quality assurance, quality control, editing, proofreading, data review, data annotation or data labeling is a plus 
Reliable access to a computer and internet connection 
Work Format & Compensation 
Work Type: freelance, remote  
Hours/Schedule: 20 hours per week  
Compensation: $36/hr  
Duration: Long-term

Why Join Welo Data?  
✨ Limitless Flexibility  
Project-based opportunities that fit your availability. Choose when and how much you want to contribute—fully remote, with complete autonomy.   
🌱 Limitless Growth  
Optional access to AI and Large Language Model workshops designed specifically for professionals like you. No coding required—just your expertise.   
🌍 Limitless Support  
Be part of a global contributor community with responsive guidance and support.   
💡 Real Impact  
Apply your expertise in the Legal field to influence the AI systems shaping the future of your industry—while collaborating with data professionals and expanding your skills.  
How to Apply? 
Apply now by answering a few quick questions to join our database and become part of our growing community. 
About Welo Data 
Welo Data, part of Welocalize, is a global AI data company with 500,000+ contributors delivering high-quality, ethical data to train the world’s most advanced AI systems. We’re building smarter, more human AI with a diverse community in 100+ countries.  
At Welo Data, Limitless AI. Limitless You. isn’t just a slogan—it’s our promise. We build smarter AI through the power of human contribution, offering limitless opportunities for our global community to grow, contribute, and work on their terms.