Spanish AI Translation And Evaluation Expert

About OpenTrain

OpenTrain AI is hiring a Spanish AI Translation and Evaluation Expert for specialized work at the intersection of language, localization, and artificial intelligence. OpenTrain is the #1 platform for finding and building careers in AI training and data labeling, helping contributors discover projects, build credible profiles, and grow long-term portfolios.

As an hourly contractor, you will contribute directly to the human review and language expertise that helps AI systems produce more accurate, useful, and culturally appropriate responses.

About AI Training And Language Evaluation

AI training is the human side of building modern artificial intelligence. Contributors review model responses, write examples, evaluate quality, and identify errors so that AI systems can improve their accuracy, reasoning, and communication.

Language specialists are especially important for evaluating translation quality, terminology, tone, cultural nuance, and adherence to local language conventions. This role gives experienced localization professionals the opportunity to apply their expertise to cutting-edge AI development.

The Role

OpenTrain is recruiting an experienced Spanish localization and AI evaluation professional to review Spanish and English outputs, create language content when needed, and score responses against detailed quality criteria. You will assess accuracy, clarity, reasoning quality, and prompt adherence while applying senior Spanish localization judgment.

The role includes careful fact-checking, diagnosis of methodology and conceptual errors, response comparison, and creation of model solutions that demonstrate the correct method. Work is fully remote and structured as hourly, part-time contractor work.

• Pay: $25-$35 USD per hour
• Time commitment: 20+ hours per week
• Employment type: Part-time contractor
• Location: Fully remote
• Eligible locations: Mexico, Spain, and the United States
• Languages: Spanish and English
• Experience level: Intermediate

What You Will Do

You will combine linguistic expertise, editorial judgment, and structured evaluation skills to help improve AI-generated content. Your reviews should be accurate, well-documented, and consistent with applicable Spanish localization standards.

• Review and evaluate AI-generated Spanish and English outputs for accuracy, clarity, and reasoning quality
• Create language content and model solutions when needed to support AI learning
• Fact-check names, dates, units, references, and other claims in localized content
• Identify methodology, conceptual understanding, and prompt-adherence errors
• Apply Spanish localization, MQM, and LQA judgment to terminology, style, and cultural nuance
• Compare multiple AI responses and rate them for correctness and overall quality
• Use root-cause thinking to assess MQM and LQA severity and category decisions

Requirements

This position is designed for a seasoned translation or localization professional with strong Spanish language expertise and the ability to evaluate written content in English. You should be comfortable making precise linguistic decisions, documenting issues, and maintaining consistent quality across a dependable workload.

• Bachelor’s degree or higher in Translation, Linguistics, Localization, Communications, or a related field
• Native or near-native Spanish proficiency with strong command of Spain locale conventions
• Minimum C1 English proficiency for reading, writing, and evaluation work
• At least 5 years of professional localization or translation experience
• Experience with MQM and LQA concepts, including severity, category, and root-cause analysis
• Experience using CAT tools, translation memory, termbases, and QA workflows
• Strong editorial judgment, attention to detail, and reliable fact-checking habits
• Minimum C1 English reading and writing ability

Helpful Background

The following experience can help you succeed in this work, particularly when evaluating nuanced responses or making consistent localization decisions.

• Terminology management and maintenance of style guides
• Copyediting and linguistic quality assurance
• Translation review and culturally nuanced writing
• Previous AI data training, annotation, or evaluation experience
• Comfort working as an hourly contractor with dependable throughput and clear documentation

How To Apply Through OpenTrain

Create a free OpenTrain account to build your professional AI training profile and apply in minutes. Your profile can help you present relevant translation, localization, and evaluation experience while discovering additional opportunities that match your expertise.

If selected, you will work remotely as an hourly contractor and contribute specialized language judgment to the development of AI systems.