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Content Expert, Artificial General Intelligence

Jobs for Humanity

Contract Remote Spain / Madrid, MD, Spain

Employer posted: September 29, 2025. Source checked: October 16, 2026 6:06 am. Availability and final application requirements are confirmed on the employer’s site.

Source: Jobs for Humanity — Spain careers. WorkerEra lists this opportunity from an external source; confirm current details with the employer.

About this opportunity

Company Description

Seeking an AI Content Expert II to help with annotations, content
generation, and data analysis. As part of the Data Team, you will be responsible for
delivering high-quality training data to improve and expand Large Language Models'
(LLMs) capabilities.
 

Job Description

Key job responsibilities

  • Creating and annotating high-quality complex training data in multiple modalities (text, image, video) on various topics, including technical or science-related content
  • Writing grammatically correct texts in different styles with various degrees of creativity, strictly adhering to provided guidelines
  • Performing audits and quality checks of tasks completed by other specialists, if required
  • Making sound judgments and logical decisions when faced with ambiguous or incomplete information while performing tasks
  • Diving deep into issues and implementing solutions independently
  • Identifying and reporting tooling bugs and suggesting improvements

A day in the life

  • As an AI Content Expert, you will be responsible for creating training data that are
  • complex in nature and will require you to make informed and high judgement decisions in each case. You will be working closely with scientists and engineers to review and update guidelines, identify tooling improvement opportunities, and engage in conversations regarding the quality of data.

Qualifications

BASIC QUALIFICATIONS

  • High-School or equivalent diploma.
  • Proven experience working with written language data, including experience with annotation, and other forms of data markup.
  • Strong proficiency in Dutch and English. Candidate must demonstrate excellent writing, reading, and comprehension skills (C1 level in the Common European Framework CEFR scale).
  • Strong understanding of Dutch and U.S.-based culture, society, and norms.
  • Strong research skills to gather relevant information, understand complex topics, and synthesize multiple resources; understanding of basic academic integrity, i.e. plagiarism.
  • Excellent attention to details and ability to focus for a long period of time
  • Comfortable with high-school level STEM
  • Ability to effectively write and evaluate diverse subject matter across various domains
  • Ability to adapt writing style to suit various style guidelines and customers.
  • Ability to adapt well to fast-paced environments with changing circumstances, direction, and strategy

 

PREFERRED QUALIFICATIONS

  • Bachelor’s degree in a relevant field or equivalent professional experience
  • Experience with creating complex data for LLM training and evaluation
  • Proven experience working with command line interfaces and basic UNIX commands
  • Familiarity with common markup languages such as HTML, XML, Markdown
  • Familiarity with common standard text formats such as JSON, CSV, RTF
  • Working knowledge of Python or another scripting language
  • Familiarity with regular expressions syntax- Familiarity with Large Language Models
  • Comfort in annotation work that may include sensitive content

Additional Information

This is a Fixed term contract.

About the team

  • The team works strictly in the office Monday through Friday with an eight-hour shift. We
  • are constantly looking for ways to improve our capabilities and deliver the best product
  • possible. Diverse team, regular meetings, training, and Amazon events throughout the
  • year await you.

Equal opportunities employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We value your passion to discover, invent, simplify and build.

Our inclusive culture empowers employees to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process.

Source: Jobs for Humanity — Spain careers

Your application checklist

  • Read the linked employer announcement and compare its requirements with your experience.
  • Tailor your CV to responsibilities and skills actually listed by the employer.
  • Confirm the work location, deadline and application documents before submitting.
  • Salary was not supplied in the listing fields; ask the employer about compensation.

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