Arabic-Speaking Ai Data Evaluation Specialist – Lisbon, Portugal - €920 A Month

Closerhire; Lisboa; On-site; EUR 28,000 - 36,000; Full time

Benefits offered by this job

Private health insurance

Meal allowance

On-site office

Job summary

CloserHire is partnering with a leading global customer experience company to recruit Arabic-speaking AI Data Evaluation Specialists for an innovative AI project based in Lisbon, Portugal. If you're passionate about AI, language technology, and data quality, this is a unique opportunity to contribute to the development of next-generation Large Language Models.

You'll review, evaluate, and improve AI-generated responses, label outputs, and ensure safety, accuracy, and policy compliance across

Qualifications

• Native-level fluency in Arabic.
• Good command of English (B2 level or above).
• Strong understanding of Generative AI, Large Language Models (LLMs), and AI evaluation methodologies.

Responsibilities

• Review and evaluate AI-generated responses using annotation guidelines.
• Label and annotate language model outputs for accuracy and consistency.
• Assess AI-generated content for quality, relevance, factual accuracy, safety, and policy compliance.

Skills

Arabic language

English (B2+)

AI evaluation

Quality assurance

Attention to detail

Policy compliance

Tools

RLHF

SFT

Job description

At a glance

Location: Lisbon, Portugal

Start: 27/8

About the role CloserHire is partnering with a leading global customer experience company to recruit Arabic-speaking AI Data Evaluation Specialists for an innovative artificial intelligence project based in Lisbon, Portugal. If you're passionate about AI, language technology, and data quality, this is a unique opportunity to contribute to the development of next-generation Large Language Models (LLMs). You'll work with cutting-edge AI systems by reviewing, evaluating, and improving AI-generated responses, helping create safer, more

What you'll do

• Review and evaluate AI-generated responses using detailed annotation and quality guidelines
• Label and annotate language model outputs with accuracy and consistency
• Assess AI-generated content for quality, relevance, factual accuracy, safety, and policy compliance
• Apply complex annotation guidelines across a wide variety of scenarios and content types
• Identify inconsistencies, edge cases, and potential model issues, escalating when appropriate
• Analyze structured text, datasets, and AI-generated content to support model improvement
• Deliver high-quality work while consistently meeting productivity, quality, and accuracy targets
• Maintain strict confidentiality and comply with all project standards, security requirements, and internal procedures
• Contribute directly to the ongoing training and improvement of advanced AI systems through detailed evaluations and feedback 24/7 rotating schedule (Monday to Sunday) with 2 rotational days off

What we're looking for

• Native-level fluency in Arabic
• Good command of English (B2 level or above)
• Strong understanding of Generative AI, Large Language Models (LLMs), and AI evaluation methodologies
• Previous experience in AI data annotation, LLM evaluation, Reinforcement Learning from Human Feedback (RLHF), Supervised Fine-Tuning (SFT), Quality Assurance, Content Labeling, Trust & Safety, or similar analytical roles is highly desirable
• Excellent analytical thinking and attention to detail
• Ability to interpret and consistently apply complex written guidelines and policies

Portuguese contracts pay 14 salaries a year — your normal monthly salary plus a holiday and a Christmas salary. The annual figure is therefore well above monthly × 12, which is worth doing the maths on before you compare it to an offer at home.

Office-based position in Lisbon, Portugal

Comprehensive onboarding and specialized training in AI evaluation processes

Opportunity to work on one of the world's most advanced artificial intelligence projects

International and multicultural working environment

Career development opportunities within the rapidly growing AI industry

Private health insurance Meal allowance

Ongoing learning and professional development

Modern office facilities with a collaborative team culture

Unique opportunity to shape the future of generative AI and language technologies

Why Portugal? Portugal is the most popular relocation destination we place into, and it earns that. Over 300 days of sun a year, some of the lowest living costs in Western Europe, and a large international community in Lisbon and Porto that makes arriving alone much less daunting. EU citizens need no visa — you can start immediately.

We are an equal-opportunity recruiter and consider every applicant on ability alone.