Hire the Best Health & Fitness Freelancers
in Spain

Need your website, app, software or marketing content to sound like it was originally written in Spanish? I'm a Top Rated Plus English to Spanish Localization Expert with 10,000+ hours worked on Upwork, a 100% Job Success Score, and experience helping international companies successfully reach Spanish-speaking markets. Over the years I've collaborated with organizations such as Google, Microsoft, P&G, Alibaba, AliExpress, LastPass, WinZip, Primark, Columbia University, and many innovative startups, localizing content that feels natural, engaging and culturally relevant—not translated. My goal isn't simply to translate words. My goal is to make your product speak Spanish naturally. What I can help you with ✔ English → Spanish Localization ✔ Website Localization ✔ Software & SaaS Localization ✔ Mobile App Localization ✔ Google Play & Apple App Store Listings ✔ Amazon Listing Localization ✔ eCommerce & Shopify Content ✔ Marketing & SEO Translation ✔ Product Descriptions ✔ UI / UX Localization ✔ Technical Documentation ✔ Legal Documents & Privacy Policies ✔ Financial & Business Content ✔ MTPE (Machine Translation Post-Editing) ✔ AI Prompt Evaluation & LLM Training ✔ Proofreading & Quality Assurance Whether you're launching a mobile app, expanding your SaaS platform, publishing an Amazon product, translating your website or refining AI-generated content, I make sure your Spanish version reads naturally and reflects your brand's voice. Why clients choose me • Native Spanish translator with extensive localization experience • Top Rated Plus freelancer (Top 3% on Upwork) • 10,000+ successful hours on Upwork • 100% Job Success Score • Fast, reliable communication • Consistent quality across long-term projects • Business and marketing background (Bachelor's Degree in Business Management) • Experience with Smartcat, Phrase, Weglot and other CAT & localization platforms I don't believe in literal translations. I believe in localization. Every project is adapted to its audience, industry and purpose, preserving the original intent while sounding completely natural to native Spanish readers. If you're looking for a long-term localization partner who understands language, business and user experience—not just translation—I would be happy to help. Let's make your content feel native.

I help busy professionals get stronger, leaner, and healthier—without wasting hours in the gym or following fitness gimmicks. Why work with me? 🎓 Licensed Pharmacist + Master's in Sports Physiology 🏆 CrossFit Level 1, Deka Certified, Official Trainer (Spain) ⭐ 5.0/5.0 Rating | Top Rated Freelancer 🌍 10+ years coaching international clients 📊 Evidence-based programming, not generic templates How we work together: Service What You Get Consultation Call 30-60 min audit of your current training with clear action steps 4-Week Program Custom programming + weekly check-ins + progress adjustments 8-12 Week Transformation Premium long-term plan with monthly reviews Perfect for you if: You work full-time and need efficient training You have limited equipment (dumbbells at home or full gym access) You want science-backed results, not fitness trends My availability: I respond within 24 hours on business days. All projects run through formal Upwork contracts for clarity and payment protection. Ready to train smarter and finally see progress? Send me a message with your goals, and let's build a plan that fits your life.

You offer a fantastic product or service that you would like to promote globally? You want content that stands out, engages your clients, and gets you results? That’s where I come in. ⭐ Over 10 years of Upwork experience ⭐ CERTIFIED in PPC by Google Ads ⭐ CERTIFIED in Content & Inbound Marketing by HubSpot ⭐ TOP-RATED FREELANCER with over 95% success rate since 2015 ⭐ 🇪🇸 (NATIVE) 🇺🇸 (FLUENT) ⭐ Global perspective (Lived in SPAIN, DENMARK, UK, FINLAND) ⭐ The only Spanish freelance translator / writer on the platform with university-level background in marketing, engineering, and finance ===== WHAT MY CLIENTS SAY ===== “This was my first time working with Sergio, and it was a very positive experience. He translated our sales presentation from English into European Spanish, as requested, and did additional corrections and options, when requested from my colleague, with no break in his stride. He even offered to check the final look of the Spanish translation to make sure it reached the best level of quality. As a Spanish translator, his communication and adherence to deadlines are top notch! I will be using Sergio’s translation services for further work with us.” – Mirjana Ilisinovic of Creatriks d.o.o. “We hired Sergio as an English to Spanish translator. He not only did his job well, but also suggested improvements for the rest of our existing app store description. Very engaged and supportive. Recommended! Will be in touch with him for future projects.” – Ana Timofeeva of Sphere Identity “Excellent communication, and Sergio also helped us pinpoint a bug in the app, so he went beyond the scope of his role as Spanish translator and helped us a lot. Outstanding work! – Mile Rosu of Pressinfra SRL ===== WHAT I CAN DO FOR YOU ===== Taken straight from my Upwork profile, the testimonials above prove that I deliver. I will make your product or business shine—on time and totally stress-free! A Spanish native with over 10 years experience in translation, proofreading, and copywriting in a variety of sectors, including marketing, engineering, and finance, I am perfectly fluent in English (US/UK). Here's how I can help you: ✓ Expert technical translation / content creation and software documentation for developers and users. ⇒ Bridge the gap between technical knowledge and layman's terms ✓ Result-driven translation and localization of your websites, apps, and software, so you get perfectly localized and formatted strings. ⇒ Save time with someone who understands UX constraints and code ✓ Engaging translation and localization of your texts for your target audience, while retaining their original style and meaning. ⇒ Make profit globally ✓ SEO friendly content creation using carefully crafted words to engage, connect with, and convince your audience—visitors to your website, prospects scanning your landing page or reading your sales letter or email ⇒ Better conversion rates Let me put my enthusiasm and expertise to your service! ===== WHAT I OFFER ===== ⇨ CONTENT TRANSLATION, LOCALIZATION, AND OPTIMIZATION o Proofreading / Editing and Optimization o General Translation o Research Paper / White Paper / Technical Translation / Software Documentation o Website, App, and Software translation and localization ⇨ CONTENT CREATION o Software / technical documentation (experience in C, C++, Java, Swift, PHP, JavaScript, SQL, C#) o Tutorials and How-to Guides o Blog and article writing (project management, software development, languages, lifestyle, health, and fitness) o UX writing o Copywriting Don't see what you're looking for? Reach out and ask! I can provide you with content that will make your product or service shine in Spanish or English! With each package, you also get: ✓ Quality content, thoroughly proofread and optimized ✓ Attention to details ✓ Full commitment—I’m here to help you succeed! ✓ Always on time ===== LET'S DO GREAT THINGS TOGETHER ! ===== If you have the same standards of excellence for your business as I have for mine, and you are fully aware of what great quality content can bring to your business, I’m sure we’d make a great team! Click the green “Invite” or “Hire now” button at the top of the page, and let’s discuss your project!

Health and wellness content doesn’t have to be boring, clinical, or confusing. It should empower, inform, and make people feel like they’re talking to an actual human who knows exactly what they need — and how to make it happen. Hey! I'm Jennifer, a maple-syrup-loving Canadian therapist and nutritionist.... What I do: I create interesting, engaging, and action-oriented content in the health and wellness space. From blog posts and articles to lead magnets, wellness guides, and ebooks, I simplify complex topics so your audience feels inspired to hit your “call to action” link. With over a decade of experience as a mental health therapist, nutritionist, and health writer, I bring a deep understanding of the human body and mind. I have degrees in psychology, foods and nutrition sciences, a post-grad in counseling psychology, an ADHD Mental Health Professional Certificate (ADHD-CCSP), and a health and life coach certification. 🎓🎓Whether you need content on mental health and wellness or an expert reviewer and editor, I’m here to connect your message with readers. My Approach: Ever felt like health content is just facts and lacks the touch that inspires people to actually take action? Everyone already knows what they “should” do to get healthier, but knowledge alone clearly doesn’t lead to action. I believe in content that inspires change, so I blend my science-backed knowledge with a tone that feels like a conversation — approachable, compassionate, and most importantly, full of practical tips. I don’t just write facts; I craft experiences your audience can connect with. My post-grad in Problem-Solving Brief Therapy (PSBT) really makes the difference here, where I’ve learned how to hone in on the real problem and set small, measurable, actionable goals — hitting the heart of the issue and pain a person feels. 🎓🎓 If you're ready to elevate your brand’s voice and get your clients wanting more, send me a message or invite me to your project. What I’ve Done: ✅ Wellness Articles and Medical Writing: Crafted content for addiction centers, psychology and therapy platforms, autism clinics, mindfulness apps, nutrition and fitness sites, supplement brands, health tech companies, clinical trials, and more. ✅ Health and Education Guides: Created in-depth and science-backed guides on chronic disease, nutrition, and mental health — with compassion and actionable tips. ✅ eBooks and Workbooks: Covered anxiety, depression, habit psychology, eating disorders, diet culture, emotional resilience, hormones, gut health, and more. ✅ Course Creation: Written and filmed content for health courses on chronic disease management for women, fertility, anxiety and ADHD, neuropathy, weight management, eating disorders, general health and wellness, mindfulness, and more. ✅ Health and Medical Copywriting: Created clear, persuasive, and engaging copy for wellness websites, healthcare companies, and clinical trials. That included brochures, patient materials, and marketing content for healthcare professionals and patients, focusing on clarity and trust-building. What Past Clients Have Said… ⭐⭐⭐⭐⭐ "Jennifer has been a joy to work with! She was easy to communicate with and has met all of our expectations. She is efficient, has great time management skills and can meet deadlines. Her work is very professional and you can clearly note her expertise. We would hire Jennifer again. :)" — Upwork client ⭐⭐⭐⭐⭐ "Jennifer is a brilliant and professional writer. She delivered a great piece of work on time and I didn't have to edit it at all. I highly recommend her. I had planned to send Jennifer more work, but the client's plans had changed. This is the only reason why we did one short piece of content. Jennifer, as soon as things change, I will be back! Can't recommend Jennifer enough. A talented writer, great freelancer, and all-round, very easy to work with." — Upwork client Why I Think You’ll Love Working With Me: ✅ Personalized Approach: I take the time to understand your brand, audience, and goals, tailoring every piece to resonate with your community. ✅ Clear & Actionable Content: My writing isn’t just about education; it’s about empowerment. Your audience will leave with clear and practical next steps, feeling understood and inspired. ✅ Deadline-Driven: Your deadlines matter (and I thrive on them). I pride myself on delivering high-quality content on time, every time. ✅ Expertise + Empathy: With a background in psychology and nutrition, I get the science — and I know how to translate it into something your audience will love. Services I Offer: - Blog posts and articles - Resources, guides, and brochures - Wellness books and workbooks - Health and wellness courses (text and video) - Email campaigns If you want content that empowers people to make real health changes, let’s talk! Thanks for reading this far! I guess that means something :)