Role overview

Qualifications

Native-level proficiency (CEFR C2 or equivalent) in Spanish (Spain)
Professional written and spoken English
Minimum 2 years of experience in AI training, data annotation, linguistic quality, localization QA, or a related quality assurance role
At least 1 year of experience leading or supervising reviewers, annotators, or quality teams

Responsibilities

Lead and support a team of approximately 10 Quality Control Reviewers, ensuring consistent quality standards across the Spanish (Spain) locale
Review reviewer feedback, audit quality, and ensure alignment with project guidelines
Act as the primary quality point of contact for the Spanish (Spain) locale, resolving quality questions and escalating complex issues when necessary
Conduct calibration sessions and provide structured coaching to improve reviewer performance

Key facts

Remote from: Spain
Fixed term
Senior (5-10 years)
English, Spanish

Hard skills

Annotation Processing Linguistics Computer Science Technical Engineering Large Language Modeling Natural Language Processing (NLP)

Other skills

Quality Assurance
Team Leadership
Quality Control
Coaching
Analytical Skills
Organizational Skills

About the company

Welo Global

Welo Global is a leader in multilingual AI, technology, and content solutions serving over 2,000 clients in 300 languages. The company combines globally scaled multilingual infrastructure, including a network of over 500,000 linguists and domain experts, with advanced NLP, computational linguistics, and best-in-class compliance backed by seven ISO certifications. Welo Global’s five brands—Welocalize (multilingual content and localization solutions for localization and technology teams), Adapt (multilingual performance-led digital marketing agency), Park IP (patent translation, foreign filing, and legal solutions for law firms and corporate legal teams), Welo Life Sciences (multilingual content solutions for drug and medical device development for pharmaceutical, clinical contract research, and medical device organizations), and Welo Data (multilingual data generation, evaluation, and human data infrastructure for AI systems)—serve distinct customer segments with purpose-built expertise, fit-for-purpose solutions, and supporting technology. weloglobal.com

Company details

Company size1001 - 5000

Links

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Job description

Overview

Are you an experienced quality assurance professional with a passion for language quality, AI, and team leadership? We are looking for a Spanish (Spain)-speaking Quality Control Lead to join a large-scale AI training program. In this role, you will lead the quality strategy for the Spanish (Spain) locale, ensuring consistent guideline application, coaching Quality Control Reviewers, and maintaining high-quality standards across a variety of AI training tasks.

This is an exciting opportunity to combine your expertise in language quality, AI data annotation, and people leadership while helping improve the next generation of AI systems.

What you will do:

Lead and support a team of approximately 10 Quality Control Reviewers, ensuring consistent quality standards across the Spanish (Spain) locale.
Review reviewer feedback, audit quality, and ensure alignment with project guidelines.
Act as the primary quality point of contact for the Spanish (Spain) locale, resolving quality questions and escalating complex issues when necessary.
Conduct calibration sessions and provide structured coaching to improve reviewer performance.
Monitor quality trends, identify risks, and proactively address performance gaps.
Support the onboarding and development of new Quality Control Reviewers.
Collaborate with global Quality Teams to improve processes, documentation, and quality consistency across AI training tasks.

Project Details:

Start Date: ASAP
Commitment: 30–40 hours/week
Job Type: Fixed-term contract
Location: Spain, Remote

Requirements:

Native-level proficiency (CEFR C2 or equivalent) in Spanish (Spain).
Professional written and spoken English.
Minimum 2 years of experience in AI training, data annotation, linguistic quality, localization QA, or a related quality assurance role.
At least 1 year of experience leading or supervising reviewers, annotators, or quality teams.
Strong understanding of linguistic quality, including grammar, fluency, tone, register, and cultural nuances.
Experience providing structured, evidence-based feedback and coaching others to improve quality.
Excellent analytical skills with the ability to evaluate complex tasks where there may not be a single correct answer.
Strong organizational skills and the ability to manage multiple priorities in a fast-paced remote environment.

Nice to have:

Degree in Linguistics, Computer Science, Engineering, or another analytical field.
Experience with Large Language Models (LLMs), RLHF, AI data annotation, prompt evaluation, or NLP projects.
Familiarity with annotation platforms and quality management processes for AI datasets.

This is a unique opportunity to take a leadership role in a cutting-edge AI program while helping ensure the highest quality standards for Spanish (Spain) language data.

Join our team and help shape the future of AI communication!