Hire the Best Document Reviewers
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Jess C.

Bilbao, Spain

$15/hr
5.0
38 jobs

I am a native English teacher with seven years of experience. Outside of teaching, I work as a trained proofreader, book reviewer and writer. I have written two travel books, which have been published. Services: Writing (reviews, blogs, books and general content) Proofreading Academic content creation Book reviews Beta reading Product/service feedback Lead generation I am reliable, hard-working and passionate about every project. I will maintain good communication throughout the process and ensure that the document or task is completed to the highest standard within the deadline.

  • Review
  • Proofreading
  • English
  • Writing
  • Data Entry
  • Mobile App Testing
  • Android
  • Web Testing
  • Smartphone
  • Beta Reading
  • Creative Writing
  • Content Writing
  • Consumer Review
  • End-to-End Testing
  • Manual Testing
Jorge S.

Zaragoza, Spain

$20/hr
5.0
5 jobs

I help AI companies improve the quality, accuracy, and reliability of Spanish AI-generated content so users can trust and understand it. I specialize in reviewing LLM outputs, evaluating AI-generated responses, detecting hallucinations, verifying factual accuracy, assessing instruction-following, and supporting Spanish AI data annotation and training projects. My work is structured, detail-oriented, and aligned with standard AI evaluation and data annotation guidelines. Typical tasks I handle: LLM response evaluation and scoring Hallucination detection Factual accuracy verification Prompt clarity analysis Spanish localization and linguistic review AI output optimization I also refine AI-generated Spanish content so it sounds natural, clear, and ready to publish. In addition, I create high-quality Spanish content for blogs, websites, and digital platforms, ensuring it is well-structured, engaging, and adapted to the target audience. With 15+ years of experience as a tax advisor, I am used to analyzing complex documentation with a strong focus on precision, consistency, and regulatory language — skills that translate directly into high-quality AI evaluation. I can review a short sample task to demonstrate my approach before starting.

  • Document Review
  • AI Model Training
  • Data Annotation
  • Prompt Engineering
  • Generative AI
  • Spanish
  • Localization
  • LLM Prompt
  • AI Content Editing
  • Content Rewriting
  • Quality Assurance
Juan Luis H.

Vigo, Spain

$35/hr
5.0
47 jobs

Senior Data Scientist | Python/R, ML, ETL, Automation & Generative AI I help clients turn messy data, documents, and business workflows into reliable analyses, machine learning models, automated reports, and maintainable data systems. I am a senior data scientist with strong experience across Python, R, SQL, ETL, statistical analysis, applied machine learning, web/data extraction, reporting automation, and reproducible workflows. My work is strongest when clients need both technical implementation and analytical judgment: clean data pipelines, robust analysis, validated outputs, and results that can be trusted in real decisions. I also bring formal IBM and Google training in Generative AI Engineering, RAG, agentic AI, AI development, LangChain/LangGraph-style workflows, tool/API integration, prompting, and responsible AI use. I use these skills pragmatically: not as a replacement for good data work, but as an additional layer when AI can improve extraction, review, search, automation, or decision support. Relevant proof: • 38 Upwork jobs and 2,300+ hours delivered • Long-running automation, scraping, R/Shiny, ETL, reporting, and data workflow projects • IBM Generative AI Engineering Professional Certificate • IBM RAG and Agentic AI Professional Certificate • IBM AI Developer Professional Certificate • Google AI Professional Certificate • Strong Python, R, SQL, AWS, Docker, machine learning, and data engineering background • Public portfolio examples in PDF/OCR extraction, DOCX standardization, review packets, validation workflows, and structured exports • Consistent focus on QA, reproducibility, documentation, and maintainable handover What I can help with: • Data cleaning, ETL, and workflow automation • Exploratory data analysis and statistical reporting • Machine learning and predictive modeling • R/Python analysis pipelines • Survey, research, and business analytics workflows • Automated reports in Excel, PDF, HTML, Quarto, R Markdown, or dashboards • Web scraping and structured data extraction • PDF/OCR and document-to-table workflows • AI-assisted document processing • RAG and LLM-assisted workflow automation • Agentic AI prototypes and multi-step AI workflows • Geospatial and research data pipelines, when relevant For data science projects, I focus on more than producing a model or chart. I care about data quality, assumptions, validation, reproducibility, documentation, and whether the final output is useful for decision-making. For automation and AI-assisted workflows, I do not treat AI as a black box. I design workflows with structured outputs, validation checks, confidence flags, rejected-row handling, source evidence, review packets, logs, and maintainable handover. Clients usually hire me when they need a reliable data scientist who can handle messy real-world inputs, build clean analytical workflows, automate repetitive processes, and deliver outputs that are practical, documented, and ready to use.

  • Python
  • R
  • AWS Development
  • LangChain
  • R Shiny
  • Scripting
  • Automation
  • AI Development
  • Data Analysis
  • ETL
  • Web Scraping
  • Data Extraction
  • Data Engineering
  • SQL
  • Machine Learning
  • Microsoft Excel
Javier G.

Sevilla, Spain

$75/hr
5.0
8 jobs

I'm a licensed psychologist (B.A. UNED Madrid, 8+ years clinical practice) who writes, edits, and strategizes content for mental health, healthtech, and wellness brands. My work sits at an unusual intersection: clinical credibility, bilingual (EN/ES) native writing, and fluency with AI-augmented workflows. That combination is hard to find — and it's why BetterHelp hired me as a Licensed Clinical Reviewer, and why I've published a 330-page book on transpersonal psychology (ES-EN self-translation, Amazon & Apple Books). ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT I DO → Clinical content strategy — editorial direction, brand voice, messaging frameworks for mental health platforms, therapy practices, and wellness startups. → Long-form writing (1,000–5,000 words) — evidence-based, trauma-informed, SEO-aware articles on trauma, therapy, mindfulness, psychedelic-assisted care, and spiritual integration. → Clinical review & editorial QA — validating AI-generated or externally-written mental health content for diagnostic accuracy, ethical integrity, and trauma-informed tone. This is a specialty where licensure matters and most writers can't compete. → Course & curriculum design — structuring online courses, workshops, and educational programs for therapists, coaches, and wellness creators. → Bilingual translation & localization (EN⇄ES) — clinical-grade, not machine-post-edited. Author-level fluency across both languages. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHY THIS MATTERS IN 2026 Most mental health content online is either clinically sloppy or algorithmically hollow. Google's EEAT updates have made licensed authorship a ranking factor. AI has made volume cheap and judgment scarce. That's exactly where I operate: combining clinical grounding with AI-literate workflows to ship content that's accurate, compassionate, and actually effective. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHO I WORK BEST WITH - Mental health & healthtech startups building evergreen content libraries - Therapy platforms needing licensed clinical review of content at scale - Wellness founders launching courses, programs, or digital products - Agencies that need a clinician-in-the-loop for health-vertical clients - Publishers, media, and educators seeking trauma-informed expertise ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ HOW I WORK I offer both fixed-price packages (most clients prefer these for predictability) and hourly engagements for ongoing collaboration. Response time: 2–4 hours. Clear scope, realistic timelines, zero drama. Send me a message describing what you're building — I read every inquiry personally.

  • Psychology
  • Counseling Psychology
  • Writing
  • Copywriting
  • Mental Health
  • Health
  • Health & Wellness
  • Spanish
  • Content Strategy
  • SEO Writing
  • Bilingual Education
  • Content Writing
  • Course Creation
  • Editorial Writing
  • Branding
Tamara P.

Palos de la Frontera, Spain

$15/hr
5.0
15 jobs

I am a professional journalist and photographer with experience in voice contibution and data annotation, proofreading, interviewing, data training, writing creative content but also news and any kind of articles. I enjoy Photojournalism a lot, but also teaching and translating Spanish and English. I have worked as a Community Manager assistant and I know how SEO works.

  • Translation
  • English
  • Spanish
  • Castilian Spanish
  • Content Creation
  • Spanish English Accent
  • Writing
  • Zoom Video Conferencing
  • Spanish to English Translation
  • Teaching Spanish
Alexandra J.

Mislata, Spain

$30/hr
5.0
1 jobs

Specialist in advanced multilingual translation projects and linguistic evaluation of artificial intelligence models, focused on optimizing translation quality, semantic disambiguation, terminological accuracy, and culturally and contextually appropriate localization, with strong emphasis on the reliability, coherence, and functional precision of AI-generated outputs. Professional experience as a language teacher, translator, and interpreter across English, Russian, Ukrainian, Dutch, and Spanish, with four years of practice in academic teaching environments

  • Translation
  • Live Interpretation
  • Tutoring
  • English Tutoring
  • Russian
  • Dutch
  • Spanish
  • Ukrainian
  • Teaching Russian
  • Russian Tutoring
  • Dutch Tutoring
  • Language Interpretation
  • Language Studies
  • Teaching Dutch
  • Teaching English

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