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