Javascript Developers for hire in Portugal
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Hire alyn48
I am a web developer with knowledge of HTML, CSS, JavaScript, C++, and basic MATLAB. I can build simple and responsive websites using HTML and CSS, and add interactivity with JavaScript. I also understand programming fundamentals through C++ and have basic experience using MATLAB for simple computations and...I am a web developer with knowledge of HTML, CSS, JavaScript, C++, and basic MATLAB. I can build simple and responsive websites using HTML and CSS, and add interactivity with JavaScript. I also understand programming fundamentals through C++ and have basic experience using MATLAB for simple computations and problem-solving. My expertise spans across modern frontend and backend development using React, Next.js, Angular, Node.js, FastAPI, Python, Java, and .NET, combined with cloud infrastructure on AWS, GCP, and Azure. I specialize in designing high-performance systems that are secure, scalable, and optimized for real-world business growth. In AI development, I work with LLM integrations, AI automation, machine learning workflows, model fine-tuning, intelligent chat systems, and data-driven applications. I build practical AI solutions that improve productivity, automate workflows, and enhance user experiences. In Unity, I develop interactive 3D applications, simulations, WebGL experiences, optimization pipelines for mobile/web deployment, and immersive environments with strong attention to performance and visual quality. I am skilled in Android and iOS application development, REST APIs, cloud services, and delivering user-focused, high-performance solutions. Developed an interactive 3D visualization application using OpenGL, Three.js and D3.js. Also, hands-on experience in AI model development, AI research, AI chatbot development, business analysis, market research, data analysis, data visualization, and computer graphics. less -
Hire felixivanr
Fast, Efficient & Terrific Service "Quality is never an accident; it is always the result of high intention, sincere effort, intelligent direction, and skillful execution. It represents the wise choice of many alternatives." I am committed to delivering exceptional service and consistently going above and beyond to...Fast, Efficient & Terrific Service "Quality is never an accident; it is always the result of high intention, sincere effort, intelligent direction, and skillful execution. It represents the wise choice of many alternatives." I am committed to delivering exceptional service and consistently going above and beyond to ensure complete client satisfaction. With my reputation on the line, I take pride in every project and strive for excellence in everything I do. I never settle for anything less than high-quality results and always aim to exceed expectations. less -
Hire bgaiteiro
Welcome to my profile. I have specialized in building ecommerce solutions tailored to your business needs. With years of expertise in ecommerce development, i help store owners create optimized, high-performing online stores. - Specialized Expertise: --- Extensive experience in ecommerce platforms and custom...Welcome to my profile. I have specialized in building ecommerce solutions tailored to your business needs. With years of expertise in ecommerce development, i help store owners create optimized, high-performing online stores. - Specialized Expertise: --- Extensive experience in ecommerce platforms and custom development. --- Skilled in delivering extensions, custom optimizations, and tailored tweaks to enhance your store's functionality. - Modern Approach: --- Recently focused on building and optimizing Hyva shops for improved performance and user experience. --- Multi-Platform Support: --- Proficient with platforms like Shopify, Shopware, Prestashop, WooCommerce, Hyva, and more. - Platform Expertise: Migration, optimization, and integration for: --- Magento --- Shopify --- Shopware --- Prestashop --- WooCommerce I'm passionate about bringing your ecommerce vision to life. Will ensure every project exceeds expectations, delivering premium solutions that help your business thrive. Let’s build something amazing together! less -
Hire joxxeanton274
Software architect and product engineer with 15 years of experience turning ideas into products used in the real world. I specialise in AI product development, software architecture, and technical leadership, from early technical decisions to production delivery. I stay close to the code and focus on building...Software architect and product engineer with 15 years of experience turning ideas into products used in the real world. I specialise in AI product development, software architecture, and technical leadership, from early technical decisions to production delivery. I stay close to the code and focus on building useful, reliable systems that can grow with the business. less -
Hire JoseRCarvas
AI and Python engineer. i build LLM-powered applications, agentic automation, and data pipelines — production-ready, tested against real inputs before they ship. what i deliver: - LLM/AI integrations — chatbots, agentic tools, API-driven workflows - custom Python backends and APIs (FastAPI, Flask, async httpx) - full...AI and Python engineer. i build LLM-powered applications, agentic automation, and data pipelines — production-ready, tested against real inputs before they ship. what i deliver: - LLM/AI integrations — chatbots, agentic tools, API-driven workflows - custom Python backends and APIs (FastAPI, Flask, async httpx) - full web apps and websites — PHP/MySQL, Node.js, responsive HTML/CSS/JS front ends - web scrapers for static and JS-heavy sites (Playwright, no blocking) - automation scripts and data pipelines that remove manual work - clean, documented code, verified end-to-end on your actual data i verify before i ship — i run the real failing case and confirm the fix on your input, not just my machine. no placeholders, no "i'll finish it later." working code from day one. less -
Hire diogos47
Senior Full-Stack & Embedded System Engineer with 13+ years building production systems across embedded IoT, AI, Web3, mobile, and backend infrastructure. Design and ship software end to end — from bare-metal board bring-up and custom Linux distributions to cloud-connected backend systems and user-facing...Senior Full-Stack & Embedded System Engineer with 13+ years building production systems across embedded IoT, AI, Web3, mobile, and backend infrastructure. Design and ship software end to end — from bare-metal board bring-up and custom Linux distributions to cloud-connected backend systems and user-facing applications. Clean architecture, secure implementation, and delivery grounded in real-world hardware constraints. Comfortable owning the full stack — from kernel space to cloud infrastructure — so projects move without coordination overhead. 🎯 SYSTEMS THINKING - Scalable, modular architecture - Edge cases addressed early - Long-term maintainability over quick patches EMBEDDED LINUX & IoT - Custom Linux distributions (Yocto, Buildroot, BSP) — board bring-up, kernel development, driver integration across x86, ARM, and RISC-V - OTA update infrastructure, A/B partitioning, secure boot, TPM 2.0 encryption, read-only rootfs, fleet provisioning - Peripheral and connectivity protocols — UART, SPI, I2C, CAN bus, USB, BLE, MQTT, cellular, LoRa - Production targets — industrial gateways, POS terminals, medical devices, kiosk appliances, edge compute nodes AI & AUTOMATION - LLM-based systems, RAG pipelines, AI agents - OpenAI API and custom model integrations - Edge AI inference — TensorFlow Lite, ONNX Runtime on embedded targets - Workflow automation and data pipelines BACKEND & WEB - FastAPI, RESTful APIs, authentication systems - React and Next.js applications - Real-time and event-driven architecture - Full LEMP/LAMP stack deployment and optimization MOBILE APPS - API-first mobile architecture - Secure authentication and real-time features - Production-ready builds and deployment WEB3 - Smart contracts in Solidity and Rust - EVM and Solana ecosystems - DeFi protocols, token mechanics, on-chain integrations If you need someone who can take ownership, reduce moving parts, and ship cleanly without constant supervision, we'll work well together. less
