Overview  

Are you passionate about languages, writing, and quality evaluation? We are launching an exciting language evaluation project and are looking for Spanish-speaking experts to join our team. 

In this role, you will contribute to training AI systems to better understand, generate, and refine language by performing structured evaluation and writing tasks, all from the comfort of your home and on a flexible schedule. 

What you will do: 

- Evaluate AI-generated responses for accuracy, grammar, and cultural relevance. 

- Identify issues and provide refined, high-quality rewritten responses. 

- Create natural prompts and responses in Spanish to improve conversational datasets. 

- Collaborate with global teams to help improve AI language models.  

Project Details: 

- Start Date: 16th January 2026

- Duration: 4 weeks

- Commitment: :20 hours/week (flexible schedule).

- Job Type: Freelance contract.

- Location: Spain (remote).

Requirements: 

- Background as a teacher (preferred but not a must) or experience in teaching/writing in Spanish. 

- Excellent written communication and strong grammatical accuracy. 

- Familiarity with cultural nuances in Spanish. 

- Comfortable with structured tasks such as: preference ranking (factuality & locality), prompt-response writing, grammaticality checks, provision & improvement of text.

Note: Please do not use VPNs or IP-masking tools during the recruitment process — our security system requires accurate regional verification.   

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. 

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.