AI Generalist Jobs Barcelona 2026

Explore full-time remote AI Generalist jobs in Barcelona for 2026 at Rex.zone. As an AI Generalist, you will power LLM training pipelines through expert data labeling, RLHF (Reinforcement Learning from Human Feedback), and comprehensive QA evaluation. This role bridges the gap between complex engineering workflows and high-quality training data. Whether you specialize in natural language processing (NLP), computer vision annotation, or prompt evaluation, these mid-senior remote roles offer the opportunity to shape the future of artificial intelligence. Join leading AI labs and tech startups by ensuring strict annotation guidelines compliance and driving continuous model performance improvement.

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Senior AI Generalist

Title: Senior AI Generalist Date: 25-02-2026 Company: Rexzone Country: ES Remote Type: Remote Employment Type: FULL_TIME Experience Level: Mid-Senior Industry: Technology Job Function: Engineering Skills: LLM Evaluation, RLHF, Data Labeling, Prompt Engineering, NLP Salary Currency: USD Salary Min: 63360 Salary Max: 126720 Pay Period: YEAR As a Senior AI Generalist working remotely in the Barcelona timezone, you will oversee large language model evaluation and content safety labeling. Your day-to-day involves executing complex RLHF workflows, validating training data quality, and collaborating with AI labs to refine annotation guidelines compliance. This full-time freelance and contract-friendly role requires deep expertise in named entity recognition and prompt evaluation to ensure optimal model performance improvement.

AI Data Operations Generalist

Title: AI Data Operations Generalist Date: 25-02-2026 Company: Rexzone Country: ES Remote Type: Remote Employment Type: FULL_TIME Experience Level: Mid-Senior Industry: Technology Job Function: Engineering Skills: Data Annotation, Computer Vision, Content Safety, QA Evaluation, Machine Learning Salary Currency: USD Salary Min: 63360 Salary Max: 126720 Pay Period: YEAR Join our global team as an AI Data Operations Generalist. You will manage end-to-end LLM training pipelines, focusing on computer vision annotation and rigorous QA evaluation. Rex.zone connects you with top-tier tech startups and annotation vendors seeking professionals who can guarantee high training data quality. This remote role is perfect for mid-senior experts dedicated to advancing AI safety and model accuracy.

Frequently Asked Questions About AI Generalist Jobs in Barcelona

  • Q: What does an AI Generalist do in LLM training pipelines?

    An AI Generalist handles a versatile range of tasks including data labeling, RLHF (Reinforcement Learning from Human Feedback), and prompt evaluation. They ensure training data quality and annotation guidelines compliance to drive model performance improvement for NLP and computer vision models.

  • Q: Are these AI Generalist roles fully remote?

    Yes, all AI Generalist jobs listed for Barcelona 2026 on Rex.zone are strictly remote. Whether you are seeking full-time, contract, entry-level, or freelance opportunities, you can collaborate with leading AI labs and BPOs from anywhere.

  • Q: What skills are required for mid-senior AI Generalist positions?

    Candidates need strong expertise in QA evaluation, named entity recognition, content safety labeling, and large language model evaluation. Familiarity with AI training workflows and a background in engineering or data operations are highly valued.

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