High-quality language data can make the difference between an AI system that performs well and one that fails to understand real users.
I help AI companies, research teams, and technology projects improve the quality of their language datasets through accurate data annotation, speech evaluation, voice recording, transcription review, linguistic validation, and content quality assurance.
I am a native Spanish speaker with English proficiency and a background in journalism, content creation, and language-focused projects. In addition to AI training and data annotation, I have professional experience as a journalist and content writer for Spanish newspapers including Granada Hoy and Ideal, where I developed strong research, writing, editing, proofreading, and editorial review skills.
What I can help you with:
✔ Spanish & English AI Training and Data Annotation
✔ Speech Data Collection, Evaluation, and Quality Control
✔ Voice Recording for AI Models and Digital Products
✔ Transcription Review, Dataset Filtering, and Quality Assurance
✔ Linguistic Validation and Data Labeling
✔ Content Writing, Editing, and Editorial Review
✔ Proofreading and Localization for Spanish Content
✔ Social Media and Blog Content Creation
Why clients work with me:
• Strong attention to detail and data quality
• Excellent written communication skills
• Professional, reliable, and deadline-oriented
• Experience working with language-sensitive projects
• Background in journalism, media, and content production
Additional expertise:
• Voice-over and speech recording
• Article writing and editorial content
• Blog and social media content creation
• Customer support and administrative assistance
• Photography and multimedia content creation
Whether you need support for AI training, language data projects, transcription quality control, content writing, or editorial review, I am committed to delivering accurate, high-quality work that helps your project succeed.
Journalism
Photography
Illustration
AI Content Editing
Voice Recording
AI Content Writing
AI Content Creation
Voice-Over
Data Annotation
Data Collection
Spanish
Training Data
Speech Writing
General Transcription
Speech Emotion Recognition
Content Creation
News Media
Audio Transcription
Audio Recording
Gemma B.
Gijon, Spain
$35/hr
4.9
16 jobs
Multimedia journalist with over 20 years of experience in radio and television in Spain, including Cadena SER, RNE (Radio Nacional de España), RTPA (Radio Televisión del Principado de Asturias), and CRN. Specialist in voice-over work, audio content creation, and broadcast journalism.
I record from my own professional home studio, delivering broadcast-quality audio. My voice is neutral Peninsular Spanish (Castilian), ideal for corporate videos, e-learning, documentaries, AI voice datasets, and any project requiring a clear, natural Spanish accent from Spain.
Beyond voice work, I have extensive experience as a radio and TV presenter, communication and press director for cultural projects, educator in communication, marketing and media, and writer of educational and audiovisual content for RTVE. Specialist in managing digital learning environments, creating innovative formats, and promoting gender equality.
Ready to support your organization with professional communication and high-impact content.
Journalism Writing
Content Writing
Writing
Professional Tone
Academic Editing
Radio
Voice & Tone Consistency
Voice & Tone Guidelines
Voice Acting
Female Voice
Tutoring
Gender Analysis
Behavioral Event Interview
Corporate Event Planning
Broadcast Journalism
Maria Belen C.
Toledo, Spain
$70/hr
4.8
95 jobs
Your product is not the problem. The message is.
Most SaaS, fintech, and edtech companies overlook that success depends not only on the product but on user expectations around it.
I bridge the gap between your brand voice and the reality of the Spain-based user, making your content perform.
90+ completed projects | 37 five-star reviews ⭐ | 10+ repeat clients | Long-term collaborations up to 2+ years
🎓 Journalism BA/MA & 6+ years in SEO content and localization.
🚀 WHAT I DO
• SEO localization for SaaS, fintech, and B2B.
• UX-focused transcreation for websites, landing pages, and product copy.
• Spain market conversion-oriented adaptation of marketing content.
• Consistent messaging across product, marketing, and user experience.
🚀 HOW I WORK
I don’t translate content — I turn it into clear, trust-building messaging for Spain-based users.
This includes:
• Tone adaptation.
• UX clarity and flow improvements.
• Terminology alignment with Spanish users.
• SEO structure optimization when needed.
Send me your content, and I’ll turn it into Spain-ready copy that converts.
Proofreading
SEO Localization
Website Localization
Localization
Transcreation
Marketing Localization
SEO Writing
English to Spanish Translation
On-Page SEO
Keyword Research
UX Writing
Conversion Rate Optimization
Search Engine Optimization
Content Editing
Copywriting
Mario G.
Villaviciosa de Odon, Spain
$18/hr
4.9
197 jobs
My main occupations are translation and journalism (specializing in editorialism, research and commentary). I possess a Cambridge Certificate of Proficiency in English (C2). Besides working in multiple translation positions and projects through the years, I've written for several Spanish-language magazines and currently keep two blogs.
I've got sizeable experience in the following fields:
- Translation of literary works, technical texts and websites (English-spanish & spanish-english).
- Subtitles translation (English-spanish & spanish-english).
- Videogame localization.
- Reviews on movies, books and other media.
- Social & political commentary.
- Sports journalism.
- Data research and organization.
I'm specially fond of popular culture-related topics, particularly concerning comic-books and animation, whether western or japanese.
Journalism Writing
Castilian Spanish
Translation
Copywriting
Article
Writing
English to Spanish Translation
Sandra C.
Sevilla, Spain
$34/hr
4.8
94 jobs
Translator (English to native Spanish) and (Italian to native Spanish) + Professional Spanish Proofreader/Copywriter + Localization Specialist, with a solid and multidisciplinary academic background.
👩🎓 Bachelor's Degree in Journalism and Communications (Spanish).
👩🎓 Master in Marketing and Digital Communication.
👩🎓 Master's Degree: International Diploma in Spanish Language and Latin American Literature (with Honorable Mention).
👩🎓 Master in Criminology and Forensic Sciences. (gives me broad knowledge in science, law and criminal psychology).
👩🎓 International Diploma of Spanish (DIE). Accreditation to evaluate Spanish as a second language.
👩🎓 Digital Photography and Video Training Course (I sell and shoot landscape, travel and portrait photography).
👩🎓 Excellent command of multiple tools such as MS Word, Excel, Adobe, Lightroom, Canvas, InDesign...
Native speaker of Spanish from SPAIN, with a high working knowledge of Latin American Spanish after having lived +4 years in the USA. ENGLISH C1 user.
WHAT I CAN OFFER YOU. DISCOVER MY SERVICES👀👇:
▪️ Localization in all types of media (software,
▪️ Marketing materials (landing pages, ads, keywords, SEO, newsletters).
▪️ Translation, editing and proofreading of fiction and non-fiction books (all genres, children's, adult, juvenile).
▪️ Technical documentation (user guides, manuals, brochures, catalogs).
▪️ Audiovisual and social media content (Facebook, Twitter, Youtube, LinkedIn, Instagram).
▪️ E-commerce (Amazon ads, Amazon and eBay product descriptions).
▪️ SEO content creation and optimization (travel, pets, products).
▪️ Education (courses, online training, e-learning, diplomas, tutorials).
▪️ Creation of articles in Spanish (native speaker).
▪️ Automatic translation (MTPE).
▪️ Subtitling and transcription (audio and video) and Proof Listening (Spanish).
▪️ I sell a wide catalog of travel photography (Cuba, Denmark, Spain, Las Vegas, Grand Canyon, Paris, Naples, Rome...).
▪️ Help / Guidance in the creation of content for Spanish-English teaching material.
▪️ Voiceover and Voice Talent in Spanish for YouTube videos, Teaching Spanish to Foreigners Audios, and Ads or Commercials.
MY HARD SKILLS:
✔️ More than 8 years of experience in the industry.
✔️ Native speaker of Spanish / Spanish from Spain / Neutral Spanish
✔️ Extensive experience working with publishers, writers and companies.
✔️ Guaranteed response within 24 hours.
✔️ Impeccable command of Spanish grammar, spelling, and syntax.
✔️ User C1 of English and B2 of Italian
✔️ Excellent understanding of cultural nuances and localization in my three working languages.
✔️ Experienced in working with national (Spain) and international (Asia, America, Europe) clients. I have lived almost 9 years in Dublin, Italy and USA, which has given me a wide experience working with many different teams.
✔️ Thorough attention to detail
✔️ Full-time freelancer (I can adapt to work for days, weeks, months, and quarters)
✔️ Knowledge of Content and Digital Marketing Supports (SEO, Facebook, Google and LinkedIn Ads, Social Profiles).
✔️ Good copywriting and transcreation skills.
✔️ Ability to work under tight deadlines and autonomously.
✔️ Accept fixed milestones or manual hourly contracts.
✔️ Open to short, medium and long-term contracts.
✔️Edito MS Word documents with track changes function, in Google Sheets and PDF files with Adobe highlighting/noting function.
But I also adapt to other formats! I am a fast learner!
MY SOFT SKILLS:
✔️ Communication
✔️ Ability to work under pressure
✔️ Time Management
✔️ Decision Making
✔️ Adaptability
✔️ Teamwork
✔️Creativity
✔️ Hard worker
✔️Precise
ARE YOU INTERESTED IN...?
If you want quality and manual service at a fair price, please CONTACT ME 📩!
I'm looking forward to working on your project!!!
Content Writing
Proofreading
Spanish
Castilian Spanish
Copy Editing
English to Spanish Translation
Italian to Spanish Translation
Editing & Proofreading
Voice Talent
Software Localization
Website Localization
Translation
European Spanish Accent
Female Voice
Book Editing
Edith Carmen G.
Algeciras, Spain
$30/hr
5.0
110 jobs
Native Spanish Content Writer and Digital Marketer for 9+ years
👩🎓 BA in Journalism (Spanish language)
👩🎓 Postgraduate studies in Digital Communication
👩🎓 Postgraduate studies in Copywriting
👩🎓 Castilian Spanish / Neutral Spanish Native speaker and fluent user of English
As a Content Writer and Editor, I have good abilities to optimize content for search engines, improve the readability, verify sources and connect with the user, prompting him to take an action.
I have wide experience in copywriting and editing articles about digital marketing, business, entrepreneurship, among a wide range of topics. Some of my articles were published in Telefonica, Entrepreneur, Eldiario.es, Infojobs, MuyInteresante and more.
I am also really good at identifying content trends relevant to your target and creating SEO optimized content, so I will definitely help you reach your goals:
✅ increasing traffic to your site
✅ improving your brand reputation
✅ building brand awareness, brand reputation, and customer loyalty
✅ increasing the ranking of your site on search engines (higher conversion rates)
AREAS OF EXPERTISE:
📍 Content Writing / Copywriting (blogging, website content, landing pages, social media)
📍 SEO Off Page (guest blogging, linkbuilding, backlinks)
📍 Ghostwriting
📍 Affiliate marketing
I am used to working with these tools:
- Wordpress
- Elementor
- Canva
- Metricool
- Ora, Trello, Asana
- Hubspot / Activecampaign (email marketing)
Sounds good? 😊
If you find my profile interesting, we could have a chat and create synergy together :)
_____________________ ______________________________ ___________________________________________
ES
REDACTORA DE CONTENIDO EN ESPAÑOL (SEO), COPYWRITER Y CONTENT MANAGER
Redactora de contenido estratégicos en español y especialista en marketing digital durante más de 10 años, con una sólida formación académica:
👩🎓 Licenciada en Periodismo (español)
👩🎓 Máster en Comunicación Digital y Periodismo
👩🎓 Máster en Copywriting
👩🎓 Certificado First Certificate in English (FCE)
👩 Hablante nativa de español europeo
MIS SERVICIOS:
📍Redacción estratégica en español: landing pages, redes sociales, web, email marketing, guiiones para vídeos y copy para Ads.
📍Creación y optimización de contenidos SEO para blogs.
📍Redacción contenidos especializados en diferentes temáticas: SaaS, software empresarial, negocios, emprendimiento, marketing, recursos humanos, contabilidad, salud visual y auditiva, educación, formación, entre otros.
📍Guest posts y estrategias de linkbuilding
📍Gestión de afiliados
📍IA – aprendizaje automático (ML): creación de prompts para IA, adaptación de prompts para IA, validación de respuestas para IA, grabación de prompts en español.
MIS PUNTOS FUERTES:
✅ Español castellano (ESPAÑA) / Hablante nativa de español neutro
✅ Redactora freelance de contenidos estratégicos a tiempo completo
✅ Más de 9 años de experiencia en el sector
✅ Mis contenidos se han publicado en cientos de blogs y revistas de habla hispana de prestigio: Telefónica, MuyInteresante, eldiario.es, EnFemenino, Entrepreneur, entre otras
✅ Dominio impecable de la gramática, ortografía y sintaxis del español
✅ Usuario intermedio de inglés
✅ Buen nivel SEO y optimización de contenidos online
✅ Transcreación, habilidades de copywriting y marketing de contenido
✅ Gran atención a los detalles
✅ Ghostwriting
Si te suena bien… ¡CUÉNTAME MÁS SOBRE TU PROYECTO! 🚀
Content Writing
Blog Content
Spanish
Castilian Spanish
Search Engine Optimization
Article Writing
Blog Writing
Copywriting
Website Content
Blog
Content Editing
SEO Backlinking
SEO Writing
Writing
Content SEO
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