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.
Project Overview
We are seeking detail-oriented freelance AI Content Evaluators to support a high-impact data annotation project.
In this role, you will review content and assess its alignment with provided guidelines. This involves evaluating different types of content and applying structured criteria to ensure consistency and quality across annotations.
Full scope and task details will be covered during onboarding. This is an opportunity to contribute to a project that directly supports content quality and user experience at a global scale.
Project Details
Location: Remote – Spain
Target Language: Spanish (Spain)
Team: Welo Data – AI Services
Engagement Type: Freelance – Remote
Start Date: Immediate
Duration: 2–3 weeks minimum
Availability: Part-time
Pay Rate: Based on tasks (approximately 34.85 USD per hour)
Responsibilities
Review content based on defined guidelines
Evaluate and annotate different types of content using structured criteria
Apply consistent judgment to ensure annotation quality and accuracy
Follow project guidelines and adapt to updates as needed
Complete tasks within agreed timelines on a flexible, part-time schedule
Participate in onboarding and calibration sessions
Qualifications
Native-level proficiency in the target language (C2 or equivalent), with strong command of grammar, fluency, and regional usage
Professional experience in localization QA, translation/revision, linguistic tasks, or data annotation for AI/ML systems is preferred
Strong analytical skills and ability to follow structured guidelines and make consistent decisions
Fluency in English to understand instructions and communicate basic reasoning when needed
Strong attention to detail and ability to maintain consistency across tasks
Comfortable working with evolving guidelines in a fast-paced environment
Familiarity with digital content platforms (music, podcasts, media) is a plus
Requirements
Availability to commit to the project duration and expected workload
Reliable internet connection and access to a personal computer
Ability to work as an independent freelance contractor in the target country
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.