Hire the Best Public Health Freelancers
in Spain

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.

EXPERIENCED ENGLISH LANGUAGE EDUCATOR & DIGITAL SERVICES FREELANCER I currently work as an online English teacher, educating a mixture of adults and children all over the world (predominantly in Spain, Turkey, East Asia and the Arab countries). I am a Games Content Creator. For each game, I design a series of escape room-style puzzles to be solved, forming an app-based walking tour/scavenger hunt. I am also a Freelancer applying my professional abilities to administrative and language-related tasks, such as: • Audio and video recording • Transcribing • Copy typing • Proofreading and light editing • Writing and content creation • Data entry. Originally from the UK, I am a Freelancer based in Spain with a conversational level of Spanish (Castellano), approximately equivalent to B1/B2. I am highly organised, detail-focused, and very self-motivated. I am keen to apply these skills effectively in administrative and language-focused roles, bringing the same dedication that I apply in my current teaching and projects.

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 :)

I hold a BSc in Public Health and a MSc in Epidemiology from the London School of Hygiene and Tropical Medicine. With five years of experience in medical writing, I have developed a strong foundation in creating high-quality scientific content for the academic and healthcare communities. My portfolio includes contributions to peer-reviewed publications in reputable international journals, reflecting my ability to meet the rigorous standards of scientific communication. My expertise spans manuscript writing, literature reviews, medical editing, and scientific content development. I excel at translating complex medical concepts into clear, engaging narratives tailored to a variety of audiences. Whether you need a well-structured manuscript, a thorough literature review, or compelling scientific content for digital platforms, I’m equipped to deliver results that align with your goals. As a motivated and reliable professional, I am committed to clear communication, meeting deadlines, and consistently exceeding expectations. I value collaboration and take the time to understand each client’s unique needs, ensuring a personalized approach that leads to successful outcomes. Partnering with me means working with someone who is dedicated to advancing your research and supporting your professional reputation. Let’s work together to bring your scientific vision to life and contribute meaningfully to the field of medical knowledge. Feel free to get in touch to discuss your project—I’d be delighted to help.