Welo Data partners with technology companies to deliver high-quality, ethically sourced datasets that are relevant, diverse, and scalable—helping their AI models improve faster and more effectively. As a Welocalize brand, Welo Data brings over 25 years of experience working with some of the world’s most innovative companies and connects a curated global network of 500,000+ AI training and subject-matter experts. Our services include:

ANNOTATION & LABELLING: transcription, summarization, and image/video classification and labeling.
ENHANCING LLMs: prompt engineering, SFT, RLHF, red teaming, adversarial model training, and model output ranking.
DATA COLLECTION & GENERATION: from institutional languages to remote field audio collection.
RELEVANCE & INTENT: culturally aware ranking and evaluation that captures context for training models used in search, ads, and LLM outputs.

Want to join the Welo Data team? We use practical, hands-on AI expertise in our projects. We combine strong academic knowledge with deep, working experience of cutting-edge AI tools, frameworks, and best practices. Help us improve the data our clients rely on.

Project Overview
We’re looking for 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 matches the guidelines provided. You’ll work with a variety of content types and apply structured criteria to ensure consistency and quality across all annotations.

Full task instructions will be provided during onboarding. This is a chance to directly improve content quality and the user experience at a global level.

Project Details
– Location: Remote – Serbia
– Target Language: Serbian (Serbia)
– Team: Welo Data – AI Services
– Engagement Type: Freelance – Remote
– Start Date: Immediate
– Duration: At least 2–3 weeks
– Availability: Part-time
– Pay Rate: Task-based (approximately $20.44 USD per hour)

Responsibilities
– Review content according to the defined guidelines
– Evaluate and annotate different content types using structured criteria
– Deliver consistent judgments to ensure accuracy and high annotation quality
– Follow project guidelines and adjust to updates as needed
– Complete tasks within agreed timelines on a flexible part-time schedule
– Attend onboarding and calibration sessions

Qualifications
– Native-level proficiency in the target language (C2 or equivalent), with strong grammar, fluency, and understanding of regional usage
– Experience in localization QA, translation/revision, linguistic work, or AI/ML data annotation is preferred
– Strong analytical skills and the ability to apply structured guidelines consistently
– English proficiency to understand instructions and communicate basic reasoning when required
– Excellent attention to detail and consistency
– Ability to adapt to changing guidelines in a fast-paced environment
– Familiarity with digital content platforms (music, podcasts, media) is a plus

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

Why Join Welo Data?
– Limitless Flexibility: Project-based work that fits your availability. Fully remote with full autonomy.
– Limitless Growth: Optional access to AI and Large Language Model workshops built for working professionals. No coding required—just your expertise.
– Limitless Support: Join a global community of contributors with responsive guidance and support.
– Real Impact: Apply your legal expertise to help shape the AI systems influencing your industry’s future, while collaborating with data experts and growing your skills.

How to Apply
Apply now by answering a few quick questions to join our database and become part of our expanding 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 across 100+ countries.

At Welo Data, “Limitless AI. Limitless You.” is more than a slogan—it reflects our commitment. We build smarter AI through the strength of human contribution, offering unlimited opportunities for our global community to grow, contribute, and work on their own terms.

We may use AI tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or evaluating responses. These tools help our recruiting team but do not replace human judgment. Final hiring decisions are made by humans. If you’d like more information about how your data is processed, please contact us.