Welo Data partners with technology companies to provide high-quality, ethically sourced datasets that are relevant, diverse, and scalable—helping to strengthen and accelerate their AI models. As a Welocalize brand, WeloData draws on more than 25 years of experience working with the world’s most innovative companies and brings together a curated global network of 500,000+ AI training and subject-matter experts. Our services include:

ANNOTATION & LABELLING: Transcription, summarization, and image and video classification and labelling.
ENHANCING LLMs: Prompt engineering, SFT, RLHF, red teaming and adversarial model training, and model output ranking.
DATA COLLECTION & GENERATION: Collecting and generating data, from institutional languages to remote field audio collection.
RELEVANCE & INTENT: Culturally informed ranking, relevance, and evaluation to train models for search, ads, and LLM outputs.

Interested in joining the Welo Data team? We apply practical AI expertise to projects, combining strong academic knowledge with deep, hands-on experience in state-of-the-art AI tools, frameworks, and best practices. Help us elevate our clients’ data at Welo Data.

Project Overview
We’re seeking detail-oriented freelance AI Content Evaluators to support a high-impact data annotation project.

In this role, you will review content and assess how well it aligns with the provided guidelines. You will evaluate different types of content and apply structured criteria to ensure consistent, high-quality annotations.

The full task scope will be explained during onboarding. This is an opportunity to directly improve content quality and the user experience on a global scale.

Project Details
– Location: Remote – Slovakia
– Target Language: Slovak (Slovakia)
– Team: Welo Data – AI Services
– Engagement Type: Freelance – Remote
– Start Date: Immediate
– Duration: Minimum 2–3 weeks
– Availability: Part-time
– Pay Rate: Task-based (approximately $31.12 USD per hour)

Responsibilities
– Review content according to the defined guidelines
– Evaluate and annotate different content types 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 basis
– Attend onboarding and calibration sessions

Qualifications
– Native-level proficiency in the target language (C2 or equivalent), with strong grammar knowledge, fluency, and regional usage
– Experience in localization QA, translation/revision, linguistic work, or AI/ML data annotation is preferred
– Strong analytical skills and the ability to follow structured guidelines while making consistent decisions
– English fluency to understand instructions and provide reasoning when necessary
– Excellent attention to detail and consistency across tasks
– Comfortable working with evolving guidelines in a fast-paced environment
– Experience with digital content platforms (music, podcasts, media) is a plus

Requirements
– Availability to work for the duration of the project and meet the expected workload
– Reliable internet connection and access to a personal computer
– Ability to work independently as a freelance contractor in the target country

Why Join Welo Data?
– ✨ Limitless Flexibility: Project-based roles that match your schedule. Decide when and how much you contribute—fully remote with full autonomy.
– 🌱 Limitless Growth: Optional access to professional AI and Large Language Model workshops. No coding required—just your expertise.
– 🌍 Limitless Support: Join a global contributor community with responsive guidance and assistance.
– 💡 Real Impact: Use your legal expertise to influence the AI systems shaping your industry’s future, while collaborating with data professionals and expanding your skills.

How to Apply
Submit your application 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 providing high-quality, ethical data to train the world’s most advanced AI systems. We’re building smarter, more human AI with a diverse community across 100+ countries.

At Welo Data, “Limitless AI. Limitless You.” is more than a tagline—it reflects our commitment. We build smarter AI by harnessing human contributions and creating limitless opportunities for our global community to grow, contribute, and work on their terms.

Disclaimer
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 support our recruiting team but do not replace human judgment. Final hiring decisions are made by people. If you’d like more information about how your data is processed, please contact us.