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Hire the best Next.js Freelancers in Barcelona, ES

Check out Next.js Freelancers in Barcelona, ES with the skills you need for your next job.
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  • $80 hourly

    • 4.8/5
    • (173 jobs)
    ✅ Top 1% part of Upwork's Expert-Vetted program | NO AGENCY SOLO DEVELOPER 🎖️ 6 years+ of experience in Data Science 🏅 160+ Upwork Projects 💯 Less than 1 Hour Response time My specialty is to take business problem and find a suitable solution using AI with programming tools from Python, R, Javascript programming languages. 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 ✅ Generative AI ( Langchain, IIamaIndex, LangGraph, LangSmith, HuggingFace, StableDiffusion, Midjourney, OPEN AI, CHAT GPT4, CHAT GPT3.5, Mistral7B, Gemini) ✅ Prompt Engineering (ICO, TESSA, ReAct, Chain of Thought, Map Reduce, Refine) ✅ 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, 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)
    Featured Skill Next.js
    React Native
    React
    Stable Diffusion
    AI Chatbot
    Generative AI
    R Shiny
    Dash
    Machine Learning
    Data Science
    Deep Learning
    Computer Vision
    Tesseract OCR
    R
    Python
  • $65 hourly

    • 5.0/5
    • (20 jobs)
    We specialize in creating impressive 3D websites and landing pages that engage and convert, 𝐡𝐞𝐥𝐩𝐢𝐧𝐠 𝐲𝐨𝐮 𝐫𝐞𝐝𝐮𝐜𝐞 𝐲𝐨𝐮𝐫 𝐜𝐨𝐬𝐭 𝐩𝐞𝐫 𝐚𝐜𝐪𝐮𝐢𝐬𝐢𝐭𝐢𝐨𝐧 𝐛𝐲 𝐚𝐧 𝐚𝐯𝐞𝐫𝐚𝐠𝐞 𝐨𝐟 𝟐𝟏.𝟐%. Our designs are all about maximizing your conversions. In fact, we're so confident in what we do that we offer you a guarantee—if our redesign doesn’t perform better than your current page, you don’t pay. 𝐓𝐡𝐚𝐭 𝐦𝐞𝐚𝐧𝐬 𝐰𝐞 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞 𝐚𝐭 𝐥𝐞𝐚𝐬𝐭 𝐚 𝟏𝟎% 𝐢𝐧𝐜𝐫𝐞𝐚𝐬𝐞 𝐢𝐧 𝐜𝐨𝐧𝐯𝐞𝐫𝐬𝐢𝐨𝐧𝐬 𝐨𝐫 𝐲𝐨𝐮𝐫 𝐦𝐨𝐧𝐞𝐲 𝐛𝐚𝐜𝐤. 𝐇𝐨𝐰 𝐝𝐨𝐞𝐬 𝐢𝐭 𝐬𝐨𝐮𝐧𝐝? A beautiful landing page isn’t enough if it doesn’t generate consistent leads or if the messaging misses the mark. Visitors will quickly move on to a competitor if your page feels outdated. That’s why we focus on combining a custom design on Figma tailored to your content and niche with a realistic strategy that aligns with your goals. Now, let's talk about numbers. 🟡For example, if your current landing page generates 50 leads per month, each worth $1,000, a 10% increase in conversions could bring in an additional $5,000 per month, or $60,000 annually. 🟡If you’re selling higher-value services at $3,000 per lead or more, that same increase could mean an extra $9,000 per month, or $108,000 a year. 𝐓𝐡𝐢𝐬 𝐬𝐢𝐠𝐧𝐢𝐟𝐢𝐜𝐚𝐧𝐭 𝐠𝐚𝐢𝐧 𝐢𝐬 𝐚𝐜𝐡𝐢𝐞𝐯𝐞𝐝 𝐰𝐢𝐭𝐡𝐨𝐮𝐭 𝐢𝐧𝐜𝐫𝐞𝐚𝐬𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐜𝐮𝐫𝐫𝐞𝐧𝐭 𝐭𝐫𝐚𝐟𝐟𝐢𝐜 𝐨𝐫 𝐦𝐚𝐫𝐤𝐞𝐭𝐢𝐧𝐠 𝐬𝐩𝐞𝐧𝐝. Our landing pages are carefully crafted to turn visitors into customers, using proven design principles and strategies that make sure your message connects with your audience. 𝐖𝐞 𝐟𝐨𝐜𝐮𝐬 𝐨𝐧: 🔴Captivating visuals 🔴Clear messaging 🔴Fast load times 🔴Irresistible offers 𝐎𝐮𝐫 𝐩𝐫𝐨𝐜𝐞𝐬𝐬 𝐢𝐬 𝐬𝐢𝐦𝐩𝐥𝐞 𝐚𝐧𝐝 𝐞𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞: 🟣We start by reviewing your existing pages and finding areas to improve. 🟣Then, we develop a strategy tailored to your specific goals. 🟣Finally, we execute the plan and test everything to ensure the best results. Even if you’re very busy, you can still stand out in your industry by partnering with the right team for long-term success. 𝐖𝐡𝐲 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐮𝐬? 🔵We’re a team of creatives, tech experts, marketers, and consultants. 🔵Our experience spans enterprise clients and brands generating 7-8 figures. 🔵We’ve completed over 200 projects, all with 5-star reviews. Interested in seeing some of our work samples and starting the onboarding? Let’s schedule a free consultation, just send me a message, and will get back to you shortly.
    Featured Skill Next.js
    Motion Design
    Framer
    Blender
    3D Modeling
    3D Design
    Vue.js
    React
    UX & UI
    Figma
    Responsive Design
    3D Animation
    Webflow
    Web Development
    Web Design
  • $50 hourly

    • 5.0/5
    • (1 job)
    Driven technologist with over a decade in pioneering decentralized tech, I blend passion and expertise to craft client-centric, innovative solutions. My focus is on leveraging cutting-edge technologies for unique customer experiences. Expertise: Low-level programming (C, C++, Rust) specializing in cryptography and cross-platform libraries. Advanced smart contract development using Solidity, C++, Rust, ASM for various blockchain platforms. Rich front-end development and data visualization with TypeScript, Vue, React, and advanced math. Building robust server applications and microservices in NodeJS, C#. Most of my work is showcased on GitHub (will share in chat). As a Blockchain Consultant, I've collaborated with notable clients such as Deloitte, Accenture, KROK, rossotrudnichestvo, and the Embassy of Ossetia, developing and teaching a Blockchain course at Stepic. At Binary District, I lecture on decentralized computer architecture and transaction-based finite state machines.
    Featured Skill Next.js
    Web3
    Blockchain
    Automation
    Flutter
    Dart
    NestJS
    React
    Decentralized Exchange
    Tokenomics
    Rust
    Solidity
    TypeScript
    Node.js
  • $38 hourly

    • 5.0/5
    • (1 job)
    𝗜 𝗵𝗲𝗹𝗽 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀 & 𝗲𝗻𝘁𝗿𝗲𝗽𝗿𝗲𝗻𝗲𝘂𝗿𝘀 𝗯𝘂𝗶𝗹𝗱 𝘁𝗵𝗲 𝗯𝗲𝘀𝘁 𝗪𝗲𝗯𝟯 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗮𝗻𝗱 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗯𝗿𝗮𝗻𝗱𝘀 📈 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗦𝗖𝗔𝗟𝗔𝗕𝗟𝗘 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗮𝗻𝗱 𝗦𝗧𝗥𝗔𝗧𝗘𝗚𝗜𝗖 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗶𝗻𝗴 🔥 +175 projects, +20M in revenue, +3M in funds raised 𝗔𝗹𝗹 𝗼𝗳 𝘁𝗵𝗲𝗺 𝘁𝗮𝗸𝗲𝗻 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗺𝘆 𝗔-𝗭 𝗽𝗿𝗼𝗰𝗲𝘀𝘀 𝘁𝗼 𝗰𝗿𝗲𝗮𝘁𝗲 𝘁𝗵𝗲 𝗯𝗲𝘀𝘁 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗮𝗻𝗱 𝗶𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 𝗲𝗻𝘀𝘂𝗿𝗶𝗻𝗴 𝘀𝗲𝗰𝘂𝗿𝗶𝘁𝘆 & 𝗲𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝗰𝘆. 🎯 "𝙉𝙤 𝙦𝙪𝙚𝙨𝙩𝙞𝙤𝙣𝙨 𝙖𝙨𝙠𝙚𝙙, 𝙩𝙝𝙞𝙨 𝙜𝙪𝙮 𝙞𝙨 𝙩𝙝𝙚 𝙗𝙚𝙨𝙩 𝙤𝙛 𝙩𝙝𝙚 𝙗𝙚𝙨𝙩. 𝙄 𝙝𝙖𝙫𝙚 𝙙𝙤𝙣𝙚 𝙖 𝙫𝙚𝙧𝙮 𝙩𝙝𝙤𝙧𝙤𝙪𝙜𝙝 𝙧𝙚𝙨𝙚𝙖𝙧𝙘𝙝 (𝙛𝙤𝙧 𝙬𝙚𝙚𝙠𝙨!) 𝙩𝙤 𝙛𝙞𝙣𝙙 𝙖 𝙧𝙚𝙖𝙡𝙡𝙮 𝙜𝙤𝙤𝙙 𝙗𝙡𝙤𝙘𝙠𝙘𝙝𝙖𝙞𝙣 𝙙𝙚𝙫𝙚𝙡𝙤𝙥𝙥𝙚𝙧, 𝙖𝙣𝙙 𝙝𝙚 𝙚𝙭𝙘𝙚𝙚𝙙𝙚𝙙 𝙢𝙮 𝙚𝙭𝙥𝙚𝙘𝙩𝙖𝙩𝙞𝙤𝙣𝙨 1000%. 𝙉𝙤𝙩 𝙤𝙣𝙡𝙮 𝙝𝙚 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙥𝙧𝙤𝙛𝙚𝙨𝙨𝙞𝙤𝙣𝙖𝙡 𝙖𝙣𝙙 𝙨𝙠𝙞𝙡𝙡𝙚𝙙 𝙬𝙝𝙚𝙣 𝙞𝙩 𝙘𝙤𝙢𝙚𝙨 𝙩𝙤 𝙘𝙪𝙨𝙩𝙤𝙢𝙞𝙯𝙚 𝙨𝙢𝙖𝙧𝙩 𝙘𝙤𝙣𝙩𝙧𝙖𝙘𝙩𝙨, 𝙢𝙞𝙣𝙩𝙞𝙣𝙜 𝙬𝙚𝙗𝙨𝙞𝙩𝙚𝙨, 𝙗𝙪𝙡𝙠 𝙪𝙥𝙡𝙤𝙖𝙙𝙨 𝙩𝙤 𝙤𝙥𝙚𝙣𝙨𝙚𝙖, 𝙨𝙚𝙩𝙩𝙞𝙣𝙜 𝙨𝙚𝙧𝙫𝙚𝙧𝙨 𝙚𝙩𝙘, 𝙗𝙪𝙩 𝙝𝙚 𝙞𝙨 𝙖𝙡𝙨𝙤 𝙫𝙚𝙧𝙮 𝙣𝙞𝙘𝙚, 𝙥𝙖𝙩𝙞𝙚𝙣𝙩, 𝙖𝙣𝙙 𝙝𝙚𝙡𝙥𝙨/𝙛𝙞𝙭𝙚𝙨/𝙖𝙙𝙟𝙪𝙨𝙩𝙨 𝙙𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚 𝙬𝙝𝙤𝙡𝙚 𝙥𝙧𝙤𝙘𝙚𝙨𝙨. 𝙄 𝙝𝙞𝙧𝙚𝙙 𝙖 𝙙𝙤𝙯𝙚𝙣 𝙥𝙚𝙤𝙥𝙡𝙚 𝙛𝙤𝙧 𝙢𝙮 𝙉𝙁𝙏 𝙥𝙧𝙤𝙛𝙚𝙘𝙩, 𝙖𝙣𝙙 𝙩𝙝𝙞𝙨 𝙬𝙖𝙨 𝙗𝙮 𝙛𝙖𝙧 𝙢𝙮 𝙜𝙧𝙚𝙖𝙩𝙚𝙨𝙩 𝙚𝙭𝙥𝙚𝙧𝙞𝙚𝙣𝙘𝙚. 𝙏𝙝𝙖𝙣𝙠𝙨 𝙖 𝙡𝙤𝙩 𝘼𝙣𝙞𝙤𝙡 😀" ⭐️⭐️⭐️⭐️⭐️ 🗣 Tom Olssen - Vengeaful Beasts 🗣 𝗟𝗶𝗸𝗲 𝘄𝗵𝗮𝘁 𝘆𝗼𝘂’𝗿𝗲 𝗵𝗲𝗮𝗿𝗶𝗻𝗴? 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘁𝗼 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗙𝗥𝗘𝗘 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝗶𝗳 𝘄𝗲 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🔎 𝗛𝗲𝗿𝗲’𝘀 𝘄𝗵𝗮𝘁 𝘀𝗲𝘁𝘀 𝗺𝗲 𝗮𝗽𝗮𝗿𝘁 𝗳𝗿𝗼𝗺 𝗮𝗻𝘆𝗼𝗻𝗲 𝗲𝗹𝘀𝗲 𝘆𝗼𝘂 𝗰𝗼𝘂𝗹𝗱 𝗵𝗶𝗿𝗲 𝘁𝗼 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂: 🔸 I deliver exceptional results from the start. Many clients reach out to me after trying less experienced talent or in-house solutions that didn’t meet their expectations. By choosing me, you’re securing a product that will make you proud and run smoothly for years to come. 🔸 You’re never reliant on me to stay in control! My development approach emphasizes clear, ongoing communication and transparency. I ensure that you have full ownership and understanding of everything built. 🔸 Working closely with Blockchain companies has allowed me to establish exclusive partnerships with some of the most prominent names in the Web3 industry. From Marketing, PR, Go-to-Market Strategy, and Tokenomics to NFT Strategy, Legal Structure Setup, VC Fundraising, and KOL, I offer comprehensive expertise. 🔸 Security is never compromised. Too many times in the Web3 world we see projects getting shattered - funds stolen, servers crashing, trust from users lost. That’s why I include thorough quality assurance testing at every stage, with final checks before your product is delivered. 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘁𝗼 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗙𝗥𝗘𝗘 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝗶𝗳 𝘄𝗲 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🔎 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 & 𝗦𝗢𝗟𝗨𝗧𝗜𝗢𝗡𝗦: ✅ Ethereum / Solana / BSC / Polygon (EVM) Customized Smart Contract Development ✅ Blockchain & Web3 Consultation (Smart Contract Ecosystem Design, Tokenomics, Whitepaper) ✅ EVM Smart Contract Audits (Automated Testing, Security Breach Search, Gas Efficiency, etc.) ✅ NFT Collection (ERC721 / ERC721A / ERC1155) creation (Whitelist, Shareholder Dividends, Burn mechanism, Reveal/Unreveal, Access Control, etc.) ✅ NFT Minting Dapps ✅ NFT Staking Contracts + Staking Dapps ✅ ERC20 Tokens (Basic Tokenomics, Staking Features, Buy Limits, Fees, etc.) + ICOs / IDOs ✅ DAOs ✅ NFT Marketplace ✅ Decentralized Exchange (Uniswap / Pancakeswap) ✅ Launchpad (Seedify) ✅ Yield Farming + DeFi Protocol ✅ Image & Metadata Generation Algorithm for NFT Artwork + IPFS Upload ✅ Solana NFT Smart Contract + Minting Dapp (Candymachine, Metaplex) ✅ 2D & 3D Graphic Design, Animations, and Promo Teaser Videos 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞: ✅ Solidity, Hardhat / Truffle / Remix, Slither, Ethereum / Binance / Polygon / Avalanche / Optimism / Solana ✅ React.JS + Next.JS (Web3.JS, ethersJS), AngularJS, HTML, CSS & JavaScript (jquery, Bootstrap) ✅ Node.js, NestJS, ExpressJS, Docker, Python, Amazon AWS, MongoDB, MySQL ✅ Figma, AdobeXD, PSD ✅ Github / Gitlab / Bitbucket, Slack, Trello / Notion / Clickup / Jira 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘁𝗼 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗙𝗥𝗘𝗘 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝗶𝗳 𝘄𝗲 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🔎
    Featured Skill Next.js
    Blockchain Architecture
    API
    NFT
    Solidity
    Solana
    Python
    Smart Contract
    Ethereum
    JavaScript
    Node.js
    Cryptocurrency
    React
    Blockchain Development
    Blockchain
  • $85 hourly

    • 0.0/5
    • (1 job)
    Software Engineer. +5 years working with Startups going from idea to product and scaling the codebase, the companies I have worked with have raised more than $10M combined. I'm an experienced full-stack developer focused on delivering quality products fast, I have worked hand-in-hand with founders to develop new features, improve product-development speed and deliver products with a pragmatic approach. When I design software I focus on maintainability and fast iterations, prioritizing modular design(even if it is a monolith). To me, a fast time to respond is better than 100 tests before seeing the feature live. Previously I was the Founding Engineer at myauthenticwallet.com where I helped the founder get from MVP to a product that landed 4 customers and $2M in funding.
    Featured Skill Next.js
    Slack
    React
    React Native
    TypeScript
    Electron
    Front-End Development
    Full-Stack Development
    AWS Lambda
    API Integration
    Django
    JavaScript
    Python
    AWS Development
    Web Design
  • $30 hourly

    • 4.6/5
    • (11 jobs)
    Let's make your ideas come true! Solution-driven Senior Software Engineer with 5 years of hands-on experience, specializing in developing innovative software solutions with a proven track record of delivering innovative and successful projects in the realm of cloud computing, ensuring that my solutions are not only cutting-edge but also aligned with the evolving needs of businesses and users. With extensive success developing web applications for individual clients as well as for large companies, I have created and improved more than a dozen of applications in the areas of retail, finance, fitness, insurance, and more. My focus in my work is to create maintainable, scalable, secure, and user-friendly cloud-based applications that meet the needs of a business or project considering deadlines and budgets. Most importantly, I am passionate about using my skills to help businesses and people achieve their goals. I am also a team player and am always willing to lend a helping hand when needed. 🙌🏻𝗛𝗼𝘄 𝗰𝗮𝗻 𝗜 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂? - Design the architecture that meets the requirements of a project. - Develop the application from ideation to MVP and beyond. - Manage projects at every stage of development. - Design and apply the strategies to migrate architectures and applications to the cloud. - Troubleshoot issues and provide support to users and clients. ⚛️𝗔𝗿𝗲𝗮𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 - Cloud Engineering. - Architecture design. - Frontend and backend development. - Database administration. 👨🏻‍💻𝗠𝘆 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 - 𝗖𝗹𝗼𝘂𝗱 𝗽𝗿𝗼𝘃𝗶𝗱𝗲𝗿𝘀: Azure, AWS, and Google Cloud Platform. - 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: React and Angular. - 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: NodeJs with Express and NestJs. - 𝗦𝗤𝗟 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: PostgreSQL, MySQL, and Microsoft SQL Server. - 𝗡𝗼𝗦𝗤𝗟 𝗱𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MongoDB.
    Featured Skill Next.js
    Spring Cloud
    React Native
    Cloud Computing
    NestJS
    Microsoft Azure
    TypeScript
    JavaScript
    PostgreSQL
    Java
    Spring Boot
    MongoDB
    Angular
    Node.js
    React
  • $125 hourly

    • 0.0/5
    • (0 jobs)
    Building modern single page applications and microservice-oriented architectures with Node.js + React stack.
    Featured Skill Next.js
    Node.js
    React
    Kubernetes
    Microservice
    Docker
    TypeScript
  • $30 hourly

    • 5.0/5
    • (12 jobs)
    👨‍💻Hello! I specialize in React, Node.js, Vue.js, and TypeScript, with over 8 years of experience delivering complex and innovative solutions. My expertise includes popular frameworks such as React Native, Next.js, and Express, complemented by a robust understanding of libraries like Redux, MobX, Ant Design, Apollo, GraphQL, and Bootstrap. 🛠️Quality is my priority. I employ modern testing tools like Puppeteer and Cypress, along with Agile and Kanban methodologies to organize workflow efficiently and maximize outcomes. My skills extend to version control with Git and SVN, build tool utilization such as Webpack, and work with various RDBMS including MySQL, MongoDB, and PostgreSQL. I'm also familiar with CI tools like GitHub CI and Jenkins. 🎯My goal is to create high-quality products that help my clients achieve their business objectives. I don't just develop software; I do so with a focus on the client's needs and results. 📞 I am ready to have a video call at any time that is convenient for you! I am confident that we will find solutions for your project or business. Thank you, Valentin
    Featured Skill Next.js
    Apollo.io
    React Native
    Redux
    CSS
    HTML
    Bootstrap
    GraphQL
    TypeScript
    MySQL
    Vue.js
    ExpressJS
    React
    Node.js
    JavaScript
  • $40 hourly

    • 0.0/5
    • (0 jobs)
    Skilled Fullstack Developer & Technical Leader As a seasoned fullstack engineer with over eight years of experience, I bring precision, innovation, and a leadership mindset to every project. I specialize in creating scalable, high-performance applications using cutting-edge technologies like TypeScript, React, Next.js, and Kubernetes. Beyond development, I excel at leading teams, streamlining workflows, and delivering results that exceed expectations. Fluent in English, Italian, and Spanish, I combine technical expertise with exceptional communication skills, ensuring seamless collaboration across global teams. Whether it's building custom solutions, architecting systems, or guiding a team to success, I thrive on tackling complex challenges with clarity and professionalism. Let’s create something exceptional together.
    Featured Skill Next.js
    Linux
    TypeScript
    React
    NodeJS Framework
    Kubernetes
    Docker
    JavaScript
  • $40 hourly

    • 0.0/5
    • (0 jobs)
    👋 Helping Founders Turn Ideas into Scalable Tech Products I help founders bring their vision to life by building simple, scalable, and efficient tech solutions. Whether you’re launching your first product or optimizing an existing one, I make the process smooth and understandable—without the technical overwhelm. What You Can Expect: ✔ A tech partner who aligns with your business goals ✔ Clear, jargon-free communication ✔ Fast MVP development to test and validate ideas quickly ✔ Scalable, future-proof solutions that grow with you ✔ Regular updates and full transparency ✔ Flexible engagement, from quick MVPs to long-term tech leadership Who I Work With: Industry Experts – You bring the knowledge; I handle the tech First-Time Founders – Step-by-step guidance to bring your idea to life Experienced Entrepreneurs – Fast execution with a solid technical foundation Growing Startups – Optimize and scale your platform with confidence Recent MVPs & Projects: 🚀 Healthcare Job Site – Built a HIPAA-compliant platform for job postings and automated payments in the nursing industry 🏠 Real Estate Insurance SaaS – Developed a claims management system that automates policy tracking and eligibility validation 🛒 E-commerce Platform – Created a scalable system managing thousands of products for Amazon FBA sellers 🤖 AI-Powered SaaS – Automated 60% of manual tasks for a recruitment platform 📚 Education App – Designed an AI tutor with a built-in rewards system 💼 Business Automation – Developed AI-powered workflows reducing operational costs by 40% How We’ll Work Together: 1. Planning (Up to a Week) Understand your industry and goals Define key features and success metrics Choose the best tech stack for your needs 2. Development (2-6 Weeks for MVP) Build the first version of your product Regular check-ins and feedback sessions Focus on core features for launch 3. Launch & Growth Smooth deployment and testing Gather user feedback and refine features Scale your platform as demand grows Tech & Expertise: 💡 Industries Healthcare, Real Estate, AI, SaaS, E-commerce, Automation, FinTech, EdTech 💻 Tech Stack Frontend: React, Next.js, Vite, shadcn/ui, Radix, Tailwind CSS Backend: NestJS, Node.js, tRPC, Express.js, Spring Boot Cloud & Infra: AWS, GCP, Serverless, Docker 📩 Let’s chat! Whether you need an MVP or a scalable platform, I’d love to help.
    Featured Skill Next.js
    SaaS Development
    API Integration
    AI App Development
    Node.js
    Web Development
    JavaScript
    TypeScript
    NestJS
    React
    Amazon Web Services
  • $33 hourly

    • 0.0/5
    • (0 jobs)
    GitHub: /oswaldoAlvarez LinkedIn: /in/oswaldo-alvarez I have worked on MVP's of IOL InvertirOnline(fintech) for almost 1 year as SSR React Native and Ripio(crypto) creating RipioTrade from scratch around 2 years as a SSR React Native, I have also worked for Ripio's wallet for around 2 years and the Reba(fintech) app in Argentina for almost 6 months as SSR React Native Dev, all this using react native - redux - typescript. Experience with: - GIT (GitHub / GitLab) - React - React Native - Hooks - Next.js 13 - StoryBook - React Query - Atomic Design - WebSocket - Tailwind CSS
    Featured Skill Next.js
    Tailwind CSS
    Websockets
    Web Development
    Web Application
    International Development
    App Development
    Redux
    Flux
    Mobile Development Framework
    Front-End Development
    Scrum
    Storybook
    React Native
    React
  • $27 hourly

    • 5.0/5
    • (1 job)
    🚀 Transforming Ideas into Scalable Web Solutions 🚀 Hello! I’m a full-stack web developer with a passion for creating high-performance, scalable, and user-friendly web applications. With extensive experience in Next.js, Vue.js, Node.js, and AWS, I specialize in building everything from responsive landing pages to complex APIs and custom dashboards. My mission is to help startups, small businesses, and marketing teams achieve their goals through innovative, reliable, and efficient web solutions. 🔧 Services I Offer: 1. MVP Development for Startups 2. Landing Page Development Whether it’s for a marketing campaign or your startup’s launch, I create high-converting, responsive landing pages using Next.js/Vue.js. My focus is on driving user engagement and maximizing your ROI. 3. Custom CMS & API Development Need a content management system or custom API? I develop tailored CMS solutions with Next.js & Supabase and robust APIs with Node.js & Express that integrate seamlessly with your existing systems. 4. Dashboard Development Transform your data into actionable insights with custom dashboards built using Vue.js/React.js. I design intuitive, real-time dashboards that empower your team to make data-driven decisions. 5. Performance Optimization & Bug Fixing If your website is running into issues, I offer bug fixing and performance optimization services for Next.js/Vue.js applications, ensuring your site runs smoothly and efficiently. 6. AI and Automation Integration Leverage the power of AI and automation! I develop custom AI chatbots using the OpenAI API and design automated workflows with Zapier/Make, helping you enhance customer engagement and streamline operations. 7. SEO-Optimized Website Development Boost your online presence with SEO-optimized static websites that load quickly and rank high on search engines. Perfect for marketing campaigns that demand visibility and speed. 🌟 Why Work With Me? • Proven Expertise: I bring years of experience working with cutting-edge technologies like Next.js, Vue.js, Node.js, AWS, and more. • Startup-Friendly: I understand the challenges of launching a startup and offer flexible, scalable solutions tailored to your needs. • Results-Oriented: My focus is on delivering high-quality solutions that solve your problems, drive growth, and generate results. • Communication: I believe in transparent communication and provide regular updates to keep you informed throughout the project. I’m excited to partner with you to turn your vision into reality. Let’s build something amazing together! 🌐 Contact me today to discuss your project.
    Featured Skill Next.js
    Web Development
    Supabase
    JavaScript
    Database
    API
    Artificial Intelligence
    API Integration
    Vue.js
    MySQL
    Tailwind CSS
    PHP
    Node.js
    Angular
    React
  • $30 hourly

    • 0.0/5
    • (1 job)
    Shopify developer specializing in custom theme development, app integrations, and store optimization. I help businesses create high-converting, user-friendly Shopify stores tailored to their needs.
    Featured Skill Next.js
    Django
    FastAPI
    SQL
    TypeScript
    Node.js
    JavaScript
    React
    Python
    Shopify Templates
    Ecommerce
    Shopify Apps
    Shopify Development
    Shopify Theme
    Shopify
  • $15 hourly

    • 4.7/5
    • (2 jobs)
    Full Stack Developer with a passion for thoughtful UI/UX design, collaboration, and sharing what I know with others. Throughout my career, I have always looked for opportunities and challenges that have meaning for me. Although my professional path has taken twists and turns - from working in one of the most important companies in Latin America, winning a national innovation award, studying at the most prestigious university in Mexico, to developing the front-end for platforms of many kinds and sizes - I have never stopped following my passion of helping others and solving problems. As a Full Stack developer, I enjoy exploiting my obsession with detail, my unequivocal love of things, and my mission-driven work ethic to literally change the world.
    Featured Skill Next.js
    Git
    PostgreSQL
    Node.js
    Socket.io
    Redux
    Jest
    Tailwind CSS
    MongoDB
    GraphQL
    React
    TypeScript
    React Native
    Firebase
    JavaScript
  • $60 hourly

    • 0.0/5
    • (0 jobs)
    Extremely dedicated and passionate full-stack developer. I have experience working with various APIs and frameworks for both complex and simple web applications. Frontend: React, Next.js, HTML5, CSS, JavaScript, TypeScript, Redux, Material UI or Bootstrap for styling, Google and Amazon services, WebSocket, SharedWorker, BroadcastChannel and many other APIs. Backend: Django, Flask, Node + Express. Have experience working both with SQL and noSQL databases. Apart from web development, I'm interested in reverse engineering, game development and computer vision. With the use of C++ and Python I have created a lot of automation scripts for computer games. I'm a dedicated person and I give 100% of myself to everything I do. Writing efficient, well-documented, scalable, tested code is one of my passions. I know how to make things to be done. I speak 5 languages, world record holder in juggling, and I had a little but successful business in Ukraine for more than 10 years.
    Featured Skill Next.js
    Automation
    Web Scraping
    C++
    TypeScript
    JavaScript
    MongoDB
    PostgreSQL
    React Bootstrap
    Material UI
    Flask
    Redux
    React
    Django
    Python
  • $35 hourly

    • 0.0/5
    • (0 jobs)
    I'm a software developer experienced building advanced web apps for start-ups. - Full project management from start to finish - Regular communication is important to me, so let’s keep in touch. As a Software Engineer, I bring a diverse skill set, having worked both as a backend and fullstack developer. My experience spans across technologies such as PHP, Symfony, NextJs, ReactJs, Node, Docker, Redis, RabbitMq, AWS, GCP, and more. I'm deeply committed to delivering top-quality products and am always seeking ways to improve. Throughout my career, I've taken on diverse roles ranging from a Fullstack Software Engineer to a Software Engineer Team Lead. My experience has led me to manage technical requirements for prominent clients, oversee architecture and technologies, and even spearhead the migration of projects from monolithic structures to microservices architectures. I've built APIs from scratch, led product development, and collaborated closely with stakeholders to bring product MVPs to fruition.
    Featured Skill Next.js
    Software Development
    Software Architecture
    React
    Laravel
    Symfony
    PHP
  • $6 hourly

    • 0.0/5
    • (0 jobs)
    Fullstack Web Developer specializing in React, Next.js (Frontend) and Java, Spring Boot, SQL (Backend). - Crafting modern and responsive web pages and applications. - Focus on designing clean, minimalist, and functional interfaces for optimal UI/UX
    Featured Skill Next.js
    Web API
    Tailwind CSS
    Python
    MySQL
    PostgreSQL
    Spring Boot
    Java
    SQL
    HTML
    CSS
    JavaScript
    React
    Web Development
    Web Application
  • $20 hourly

    • 0.0/5
    • (0 jobs)
    Skilled web developer | 👩‍💻 | React/Vue.js/Redux/TailwindCss/MaterialUI Mobile developer | React Native Developed website for small/medium companies. Front-end: * React.js * Redux * Vue.js * HTML/CSS * Tailwind/MaterialUI I’m looking for: - Interesting tasks that can provide a decent challenge. - Good communication and teamwork. - Constant learning and improvement of my skills. I am passionate about coding and do my best to turn the clients' requirements into successful projects. I will be glad to participate in your project! Feel free to reach out!
    Featured Skill Next.js
    Landing Page
    Flutter
    React Native
    Back-End Development
    Front-End Development Framework
    Front-End Development
    AWS Amplify
    Node.js
    Tailwind CSS
    Vue.js
    React
    Responsive Design
  • $12 hourly

    • 0.0/5
    • (0 jobs)
    I’m a Senior Software Engineer with a knack for building innovative, scalable solutions. With over five years of experience, I excel in modernizing applications, designing microservices, and integrating real-time systems. I’m skilled in NextJS, NestJS, and cloud infrastructure, with a focus on delivering efficient, user-friendly tech. I thrive in collaborative environments and love solving complex problems.
    Featured Skill Next.js
    Google Cloud Platform
    Supabase
    Firebase
    Amazon Web Services
    Node.js
    Web Development
    AI Agent Development
    Artificial Intelligence
    Cloud Development
    JavaScript
    TypeScript
  • $30 hourly

    • 0.0/5
    • (0 jobs)
    My name is Alex Lopez and I have been a developer for over 7 years. I have worked in mobile development with Android, hybrid apps, and am currently focused on iOS. My experience primarily involves working with startups and some consultancies at both national and international levels, collaborating with multicultural teams. This has allowed me to gain experience not only in a variety of projects but also in creating projects from scratch. I focus on the quality of the projects, ensuring that the final result is efficient and clean. I work responsibly with direct, fluid, and transparent communication to achieve the objectives as planned. I am confident that my experience can help you with the project you have in mind.
    Featured Skill Next.js
    Android
    SwiftUI
    Swift
    Firebase
    iOS
    Flutter
    Firebase Cloud Firestore
    Node.js
    JavaScript
    React
  • $25 hourly

    • 0.0/5
    • (0 jobs)
    I’m a Full-Stack Developer with over 4 years of experience building high-performance web applications. I specialize in JavaScript, React.js, Next.js, TypeScript, and Tailwind CSS for modern, responsive front-end development, and Nest.js, Node.js, Express.js, and MySQL, PostgreSQL for scalable back-end solutions. * My expertise includes RESTful API development, payment gateway integrations (Stripe, PayPal), and state management using Redux and Zustand. * In Front-end responsive design, developing applications based on UI/UX principles, and implementing server-side rendering (SSR) to improve load times and overall performance optimization. I’m passionate about delivering clean, efficient, and scalable code, ensuring fast and secure applications. Let’s build something amazing!
    Featured Skill Next.js
    International Development
    Cypress
    Jest
    Tailwind CSS
    NestJS
    ExpressJS
    Node.js
    TypeScript
    React
    Web Development
    Web Application
  • $45 hourly

    • 0.0/5
    • (0 jobs)
    𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 & 𝗦𝗘𝗢 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁 | 𝗥𝗲𝘀𝘂𝗹𝘁𝘀-𝗗𝗿𝗶𝘃𝗲𝗻 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 I build high-performing websites and craft SEO strategies that drive traffic, rank higher, and convert visitors into customers. 🖥️ Web Developer: Expert in Next.js, JavaScript, HTML/CSS, and responsive design. I am also proficient in working with Webflow, WeWeb, Framer, and Wappler. 🔎𝗦𝗘𝗢 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁: Proven track record in on-page, off-page, and technical SEO. 🏎️ 𝗙𝗮𝘀𝘁 𝗿𝗲𝘀𝘂𝗹𝘁𝘀: Clean code, optimized performance, and measurable ROI. Let’s turn your vision into reality. Message me to get started!
    Featured Skill Next.js
    Figma
    Webflow
    SEO Strategy
    SEO Audit
    TypeScript
    Vercel
    Supabase
    Tailwind CSS
    ExpressJS
    Redis
    React
    JavaScript
    CSS 3
    HTML5
  • $60 hourly

    • 0.0/5
    • (0 jobs)
    I’m a Senior Frontend Developer with expertise in building scalable and high-performance web applications. With extensive experience in React and Vue, I create intuitive and visually appealing interfaces tailored to meet client needs. What I bring to the table: • Expertise in modern JavaScript frameworks, including React and Vue. • Proficiency in crafting reusable components to ensure maintainable and efficient codebases. • A keen eye for UI/UX best practices, ensuring seamless user experiences. I’ve also led teams as a Frontend Tech Lead, mentoring developers and driving projects to successful completion. Currently open to freelance opportunities, I aim to collaborate on exciting projects that challenge my skills and deliver value. Let’s bring your vision to life!
    Featured Skill Next.js
    TypeScript
    Web Development
    Web Application
    Tailwind CSS
    JavaScript
    Vue.js
    React
  • $120 hourly

    • 0.0/5
    • (0 jobs)
    I'm a software engineer experienced in building full stack applications. I can develop rapid prototypes, offer bug fixes and maintenance for existing applications, build fully featured custom websites and mobile applications, etc.
    Featured Skill Next.js
    Custom Web Design
    Custom App
    Node.js
    React
    React Native
    Data Integration
    API Integration
    Web Portal
    Dashboard
    Bug Fix
    Product Development
    Ecommerce
    Web Application
    App Development
  • $25 hourly

    • 0.0/5
    • (0 jobs)
    I am a passionate and results-driven professional with a creative flair and a commitment to delivering exceptional digital experiences. With a diverse skill set and a dedication to excellence, I thrive on transforming ideas into impactful solutions that leave lasting impressions. My expertise spans web development, cloud services, and project management, enabling me to approach challenges from multiple perspectives and deliver innovative, efficient results. I am proficient in both frontend and backend development, skilled in utilizing AWS Cloud Services, and experienced in leading projects using Agile/Scrum methodologies. In addition to my technical abilities, I possess strong communication and interpersonal skills that allow me to collaborate effectively with cross-functional teams and stakeholders. I am committed to continuous learning and staying current with the latest industry trends, ensuring that I can adapt and excel in any environment.
    Featured Skill Next.js
    AWS Lambda
    CI/CD
    React Native
    React
    NoSQL Database
    SQL
    NestJS
    Node.js
    Python
    HTML
    GitHub
    CSS
    Content Writing
    JavaScript
  • $10 hourly

    • 0.0/5
    • (0 jobs)
    Enthusiastic about opportunities followed by using the most innovative solutions to build amazing projects. Leveraging a solid foundation in the MERN stack. Continuously expanding my knowledge in the ever-evolving field of software development. By providing exceptional teamwork and collaboration skills, aiming to make a notable impact in the tech industry
    Featured Skill Next.js
    Tailwind CSS
    TypeScript
    React Native
    CSS 3
    MongoDB
    React
    Node.js
    HTML5
    Web Application
    Git
    Web Development
    ExpressJS
    JavaScript
    Responsive Design
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