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Are you looking for a versatile, multilingual expert? Let's work together! As a native German and Swiss German speaker fluent in five languages, I combine language expertise with web design and content creation skills. ☼ Native German and Swiss German speaker ☼ Fluent in English, French, Portuguese (Brazil) and Spanish ☼ Able to communicate in Italian on a conversational level ☼ Certified teacher (BA) with 10+ years of experience in teaching languages, primarily German ☼ Expertise in grammar, writing and communication as well as creating learning material and online content for different levels ☼ Trained computer scientist with experience in web design and development ☼ Skilled in working with WordPress, Elementor and relevant SEO plugins ☼ Editing, proofreading, translating texts in various contexts I am passionate about continuous learning and am always looking for new ways to improve my skills. Whether it's self-taught, through professional development courses or by immersing myself in new languages and cultures, I am committed to personal and professional growth. I look forward to the opportunity to collaborate with you and bring my expertise to your projects!

✅ Top 1% part of Upwork's Expert-Vetted program | NO AGENCY SOLO DEVELOPER 🎖️ 8 years+ of experience in Data Science 🏅 180+ Upwork Projects 💯 Less than 1 Hour Response time My specialty is to take your business problem and find a suitable end to end solution using AI and programming tools from Python, R, JavaScript programming languages. My extensive experience and wide skillset from data acquisition, model training to production grade application or REST API development will save you time and costs (material or psychological i.e. trying to find developers to make MVP, organize and support communication within team). AI Agentic systems are overtaking markets with potential impact on various businesses and creating opportunities to utilize. My skills in AI Agentic system development using Langchain, LangGraph, CrewAI, Autogen, RAG, MCP, Retell.ai, Elevenlabs will give you opportunities to cut costs and optimize your business operations. My skills include machine learning, deep learning, computer vision, web scraping, data engineering, web development, and data visualizations. I can create interactive web applications and dashboards using Python's Dash framework and R's shiny package so you will be able to observe, analyze and present various aspects of your business and other activities in practical ways. My expertise also includes the development of graphical user interface GUIs with Python's Kivy framework. In Computer Vision, my skills include image classification, object detection, and image segmentation with Python tools such as Tensorflow, Keras, CNNs (LeNet, AlexNet, VGG1619, InceptionV3, ResNet50), SSD, YOLO, TFOD, and Mask R-CNN. Importantly, I have skills in math and statistics essential for understanding processes behind code and interpreting outcomes from it. I have done my MBA with a focus on data science. I have been working as an accountant for around five years, including a member of the Big Four and as Data Scientist in a local IT company focused on DS. Thus, I understand finance from theoretical and practical sides and can apply code to analyze vast amounts of financial or other data efficiently. Considering my previous experience, my domain knowledge in finance, marketing (CTR, CLV), process optimization, and other business areas, I will focus on understanding your business goals and implementing solutions to make them come true. My skills include: ✅ Data Science ✅ Machine Learning ✅ Deep Learning ✅ Algorithmic Trading ✅ Generative AI ( Langchain, IIamaIndex, LangGraph, LangSmith, HuggingFace, StableDiffusion, Midjourney, OPEN AI, CHAT GPT4, CHAT GPT3.5, Mistral7B, Gemini, Cursor, Ollama, CrewAI, AutoGen, MCP, Google MCP Toolbox for Databases) ✅ Prompt Engineering (ICO, TESSA, ReAct, Chain of Thought, Map Reduce, Refine) ✅ AI Agents, Inbound & Outbound & Batch Calls, Chatbots, RAG, Conversational Agents, VAPI, Retell.ai, make.com, gohighlevel, n8n, telnyx, twilio ✅ Full Stack Development (React, React Native, Next.js) for AI integration ✅ Interactive Visualizations/Dashboards ✅ Data Engineering (MySQL, MongoDB, PostgreSQL, BigQuery, Oracle, SQLServer, Pinecone, ETL) ✅ Python, R, SQL ✅ Object Oriented Programming (OOP) ✅ PEP-8 (pylint, isort, flake8, autopep, black, docstrings, pydocstyle, mkdocs) ✅ Web development (interactive dashboards Dash) ✅ Bot Development (Telegram) ✅ Graphical User Interfaces (GUI) Kivy ✅ Big Data (Spark) ✅ Recommender Systems ✅ DevOps (ML Deep Learning model deployment on cloud, TDD, AWS, GCP, Azure, Docker, REST API) ✅ OCR ✅ Computer Vision ✅ Audio Processing ✅ Natural Language Processing NLP (Bert, fastText, Langchain) ✅ CNN (LeNet, AlexNet, VGG1619, InceptionV3, ResNet50) ✅ Object Detection (R-CNN, SSD, YOLO, TFOD API) ✅ Image Segmentation (Mask R-CNN) ✅ Transfer Learning ✅ Time Series Analysis (ARIMA, SARIMA, LSTM, PROPHET) ✅ OpenCV ✅ Educational Tutorials ✅ Web Scraping ✅ Web Crawling ✅ API Clients ✅ Keras, Tensorflow, PyTorch ✅ Dash, Shiny, Plotly, Streamlit, React, Next.js ✅ Pandas, Numpy, Scipy, Scrapy, Selenium, requests, ggplot2 ✅ IOT (Raspberry Pi) ✅ REST API (Google Ads, Google Analytics, FB/META API, Stripe, CCXT, OPEAI etc.) ✅ REST API development (Flask, FastAPI)

I specialize in the backend systems and customer workflows that keep online businesses running smoothly. With 7 years of hands-on experience in the E-commerce and SaaS sectors, I bridge the gap between complex operations and high-level customer satisfaction. Currently, I manage daily operations for an E-commerce brand (a role I’ve held since February 2024 via Upwork), where I handle everything from order fulfillment to high-stakes problem-solving. I am tech-agnostic and pride myself on mastering new platforms or CRM stacks in a single afternoon. Where I add the most value: E-commerce Operations: Expert in Shopify and Amazon management, handling complex product listings, inventory synchronization, and logistics without needing micro-management. Strategic Customer Support: I don't just "reply to tickets." I optimize support flows using Intercom, Zendesk, or Salesforce to reduce response times and increase retention. Process Documentation (SOPs): I build and maintain the standard operating procedures that allow a business to scale reliably. Fluent Multilingual Support: Professional-level operations in English, Spanish, and Catalan, ensuring your global customer base feels heard. If you are looking for a partner who takes full ownership of the daily "to-do" list so you can focus on growth, let's connect.

Do you need a TRANSLATOR or a CERTIFIED PROOFREADER for your project? In need of marketing and content translation, web localization, copywriting, general translation or game translation from a translator expert or a talented SEO article writer? Invite me to work on your project and get the best results. Flexible availability 24/7 all year round. Do you want to know what can I translate FOR YOU? ⬇️ I translate the following languages: 🇬🇧English (en_US/en_UK) 🇪🇸Spanish (ES/LATAM) 🇫🇷French (FR) 🇩🇪German (GR) 🇮🇹Italian (IT) 🇵🇹Portuguese (PT) 🇧🇷Brazilian Portuguese (BR) Areas of English, Spanish, German, Italian, French and Portuguese localized translations expertise: 📌 Content Translation 📌 Software & Wordpress Website Translation 📌 Product Translation (i.e. Amazon, AliExpress…) 📌 Article & Document Translation 📌 SEO Translation and Copywriting 📌 Keyword Translation and Research 📌 Spanish Audio Transcription 📌 MTPE Post Editing 📌 .SRT Translation/Subtitle Translation 📌 InDesign Brochures File formats we can work with: ✅ Google Docs, Google Sheets (in the cloud) ✅ Microsoft Word, Excel, Power Point (.doc / .docx / .xlsx / .ppt) ✅ PDF (.pdf) ✅ Subtitling formats (.srt /.ass) ✅ Video & Audio formats (.mp3 / .mp4 / .wav / .mov) ✅ InDesign ✅ HTML ◾Online platforms & CAT Tools : Phrase (Memsource) Happyscribe, Vimeo, Youtube, Crowdin, Memsource, Lingohub, Transifex, POEditor, Magento, XTM-Cloud, MateCat, Weglot English Writing Enhancement Platform: Grammarly Premium, Wordpress, Drupal 🏆The Client Review🏆 “Sergi exactly fit our needs for a translation. He did a great job of joining the team and, with little direction, has translated the content of our website as we needed. The translation was delivered on time and I would highly recommend Sergi and hope to work with him again in the future." Expert Level ability in Translation, Transcription, Captions and Subtitles as Spanish native speaker from Spain (Barcelona) with the mentioned pairs and, I pride myself in my ability to intuitively gather, interpret and understand your requirements, as well as provide accurate translations and commitment to the deadlines. NOT SURE YET? Just drop me a message and ask anything. I reply very quickly.

Spanish Localization Consultant, English to Spanish (Native) Expert Translator and Project Manager Carlos Hernández Petrini 🎖 Top 3% on Upwork 📊 Over 10.000 hours charged at Upwork 👔 Included in several Private Talent Clouds (such as P&G, Microsoft… among others) ⚙ Experience in CAT platforms, such as Smartcat and other localization platforms, for example WeGlot or Phrase "- 5/5 ⭐ Carlos was fast, accurate and very affordable. He did a great job with our Spanish translation needs. Will use again!" "- 5/5 ⭐ Excellent. Very reliable. Work completed well before deadline. Perfectly composed. Very efficent, good communication, and reasonably priced. Carlos is someone to recommend. Excellent." "- 5/5 ⭐ Excellent communication. Superb translation and seamless intergration into Microsoft Word. And 70 pages done in 5 days. Very easy to recommend that you use this man. You will not be dissapointed." "- 5/5 ⭐ Carlos did an incredible job with the projects we gave him, so much so that we kept giving him more and more. We were very pleased with his attention to detail and the speed at which he worked. We would welcome the opportunity to work with Carlos again." "- 5/5 ⭐ Carlos executed this job excellently. On time, on spec, on budget. Very well recommended." An experienced and resourceful English to Spanish translator with many skills and a great reputation. Over 8 years as a freelancer, with more than half that time in Upwork, charged over 9.000 hours with a flawless 5.00 star rating , 100% Job Success score and Top Rated Plus badge that guarantees a successful outcome for your enterprise's needs. 🖋 How can I help you? ; Services offered: - English to Spanish translations. I specialise in localizing content, from website content, privacy policies, to blogs, general texts and Amazon listings with many contractors extremely satisfied with the outcome. These have included "Streamcloud", "LastPass", "Primark", or "Y8". I can also translate technical documents from cyber security (related to virus and spyware) to financial and insurance. - Proofreading, I'll make sure that your translated texts look as they should look. - Automatic translations moderation via several localization platforms, such as SmartCAT, Phrase or Weglot, among many others. - I also offer several other translation services, I am confident in my ability to provide a suitable and satisfactory service, however I will continue to develop my own ability and I'm keen to learn and take on new challenges. I am goal orientated and devote the necessary time and effort to achieve outstanding results in a timely manner. - I've also been involved in tasks that involved training Chatbots, submitting complex promts and scoring their responses to improve their knowledge and future responses. In the past I've been able to provide my services to world-renowned companies such as: Google, P&G, AliExpress, WinZip, AliBaba, Streamcloud, LastPass, Primarkt and the Columbia University of NY. My goal is to deliver the highest quality service for my clients, and continue to surpass their expectations by identifying areas for improvement and finding solutions to help their company grow. I comply with deadlines set, and believe in open communication with the client to identify any changes required or any related queries which may affect the outcome of the project. 🎓 Education: - Bachelor's Degree on Business Management @ Universidad Europea de Madrid - 2 summer scholarships in the UK @ Leicester and Weymouth with EF (Education First). 🌐 Languages: - Spanish: Native - English: Cambridge C 1.1 🏃‍♂️ Freelance experience outside Upwork: - Translation of the Help webpage of streamcloud.eu English to Spanish: I translated all the content and text of the Help page, including technical text, with instructions and issues. A sample can be checked in the portfolio. - Translation of XML Code for streamcloud.eu English to Spanish: translation of a .txt file with the XML Code of the webpage. The translation had to be respectful with the code so it won't crush when implemented in the site. - Translation of title products for AliExpress and AliBaba: I've translated over 20.000+ products names, the products name also had to fit a very specific instructions that were given, so they also had to be re-named. A sample can be checked in the portfolio. **Don't forget to check my experience and portfolio here in Upwork listed below. ------------------------------------------------------------------------------------------------------ ⚠ IMPORTANT: Please do not offer me any job outside Upwork's platform. All the offers given to me under this profile must to have jobs managed through Upwork. I do NOT accept any other method nor type of payment. ⚠

I am an ex-McKinsey Graphic Designer specialized in PowerPoint & Google Slides presentations. • 13 years of experience • 850 completed projects • Marketing, fintech, IT/SaaS background I aim to add value to all presentations I work with. So I don’t decorate — I DESIGN and STRUCTURE the content. I'm passionate about information design and always in search of the best way to present the data. Whether it is a table, a chart, or a plain text — I’ll do my best to turn it into a beautiful and meaningful infographic. - No stock templates, only custom design - Editable files that you can reuse in the future - I’m very responsive and work until you are 100% satisfied Do you have a text slide that nobody wants to read? — I have a great visual solution for it! Do you have a complicated diagram? — I have a modern infographic idea to present your data. “Great to work with Natalia! She's extremely reliable and fast, she provides top quality work.” — Andrea Blanc du Collet | Marketing and Communication Coordinator, ExPretio