Shape the Future of AI — Dutch Talent Hub in Spain

Welo Data works with technology companies to provide datasets that are high-quality, ethically sourced, relevant, diverse, and scalable to supercharge their AI models. As a Welocalize brand, WeloData leverages over 25 years of experience in partnering with the world’s most innovative companies and brings together a curated global community of over 500,000 AI training and domain experts to offer services that span :

ANNOTATION & LABELLING : Transcription, summarization, image and video classification and labeling.

ENHANCING LLMs : Prompt engineering, SFT, RLHF, red teaming and adversarial model training, model output ranking.

DATA COLLECTION & GENERATION : From institutional languages to remote field audio collection.

RELEVANCE & INTENT : Culturally nuanced and aware, ranking, relevance, and evaluation to train models for search, ads, and LLM output.

Want to join our Welo Data team? We bring practical, applied AI expertise to projects. We have both strong academic experience and a deep working knowledge of state-of-the-art AI tools, frameworks, and best practices. Help us elevate our clients' Data at Welo Data.

Shape the Future of AI — On Your Terms

At Welo Data, we’re reimagining how people and machines understand each other. As part of the Welocalize family, we partner with leading global companies to power inclusive, human-centered AI — built on high-quality language data.

We’re building a global network of talented linguists, language enthusiasts, and culturally curious contributors ready to shape the next wave of technology through the power of language.

This is your space to grow, learn, and connect on your schedule.

Join Our Talent Community

Whether you're a professional linguist or just passionate about how language and technology intersect, Welo Data welcomes you. By joining our talent pool, you’ll be first in line for future task-based projects in areas like annotation, evaluation, and prompt creation.

When a suitable opportunity opens up, we’ll invite you to a short qualification process, which may include training, assessments, or onboarding steps depending on the project.

Who We're Looking For :

• Native or near-native fluency in Dutch
• Proficient in English (written and spoken)
• Based in the Netherlands
• Comfortable using digital tools and working remotely
• Naturally detail-oriented, curious, and eager to learn
• Open to working on a wide variety of language-focused tasks

Why Choose Welo Data?

Apply now by answering a few quick questions to join our community.

Got questions? Reach out to us at

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