Translation Validator | Spanish (Spain)

Welo Global; España; Remote; EUR 16,000 - 21,000; Part time

Job summary

Welo Data is seeking experienced linguists to support a synthetic data generation program for a leading technology client. You will review an English source document alongside two machine-generated Spanish translations and select the preferred version with a written justification.

This freelance contract role is remote (Spain) for 2 weeks, with a pay rate of $14.30 per hour. Strong Spanish (Spain) and English proficiency, plus attention to detail, are required to contribute to high-quality AI

Qualifications

• Native-level fluency in Spanish (Spain) (written and spoken).
• Strong written communication skills in the target language.
• Proficiency in English.
• Background in linguistics, translation, or language quality assessment preferred.
• Ability to work independently with high attention to detail and consistency.
• Familiarity with Romanized script conventions for the relevant language is a plus.

Responsibilities

• Review English source documents alongside two machine-generated Spanish (Spain) translations.
• Evaluate both variants based on accuracy, fluency, and overall translation quality.
• Select the preferred translation and provide a clear written justification for your assessment.
• Review audio files and their transcriptions, evaluating accuracy, completeness, and overall quality.
• Assess both transcription quality and audio quality according to project guidelines.
• Complete assigned samples independently and within established timelines.
• Adhere strictly to project and client guidelines.

Skills

Spanish (Spain) native

English proficiency

Attention to detail

Independent worker

Job description

About the Role

Welo Data is seeking experienced linguists to support a synthetic data generation program for a leading technology client. In this role, you will perform A/B preference testing of machine-generated translations from English into Spanish, helping to evaluate and improve the quality of AI-generated content.

As a Translation Validator, you will independently review an English source document alongside two machine-generated translations (Variant A and Variant B), select the preferred translation, and provide a written justification for your choice. Each sample is reviewed by three independent validators working in a blind process.

Project Details

• Job Title: Translation Validation - Spanish (Spain)
• Location: Remote (Spain)
• Commitment: 2 weeks
• Employment Type: Freelance Contract
• Pay Rate: $14.30/hour

What You’ll Do

• Review English source documents alongside two machine-generated Spanish (Spain) translations.
• Evaluate both variants based on accuracy, fluency, and overall translation quality.
• Select the preferred translation and provide a clear written justification for your assessment.
• Review audio files and their corresponding transcriptions, evaluating accuracy, completeness, and overall quality.
• Assess both transcription quality and audio quality according to project guidelines.
• Complete assigned samples independently and within established timelines.
• Adhere strictly to project and client guidelines

Requirements

• Native-level fluency in Spanish (Spain) (written and spoken)
• Strong written communication skills in the target language.
• Proficiency in English.
• Background in linguistics, translation, or language quality assessment preferred.
• Ability to work independently with high attention to detail and consistency.
• Familiarity with Romanized script conventions for the relevant language is a plus (for transliteration tasks).

$14.30 - $14.30 an hour

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.

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.

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.