Underscore.js Developers For Hire
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Hire jayprakashyadav
I'm a Mobile App Developer, Flutter and React Native Specialist, AI and LLM Engineer (OpenAI API, GPT-4o, Claude, LangChain, RAG Systems, AI Agents, Fine-tuning, Prompt Engineering, Vector Databases, Embeddings, AI Model Deployment), Automation Engineer (n8n, Make, Zapier, Workflow Automation, Python Automation, RPA,...I'm a Mobile App Developer, Flutter and React Native Specialist, AI and LLM Engineer (OpenAI API, GPT-4o, Claude, LangChain, RAG Systems, AI Agents, Fine-tuning, Prompt Engineering, Vector Databases, Embeddings, AI Model Deployment), Automation Engineer (n8n, Make, Zapier, Workflow Automation, Python Automation, RPA, API Integration, Webhooks, Data Pipelines) and Mobile and Automation with Python and Full AI Solutions Architect with solid experience in web and mobile app development. I have mastery level expertise in mobile app development with Flutter, React Native, Kotlin, Swift, iOS Development, Android Development, Firebase, RESTful APIs, GraphQL, State Management, CI/CD for Mobile and Mobile UI/UX Design. I manage complex requirements within open source CMS and MVC frameworks such as WordPress, Webflow, Laravel and CodeIgniter. I also develop eCommerce solutions on WooCommerce, Shopify, PrestaShop and Magento platforms. I create UI/UX design in Figma and Adobe XD for responsive design, wireframe and prototype. ✔ WordPress CMS Expertise & Moodle • Custom Theme Development • Plugin Development & Customization • Elementor & Page Builder Design • Website Speed Optimization • Security & Maintenance • API Integration • Migration & Backup ✔ AI Automation & LLM Integration • AI/LLM: OpenAI API (GPT-4o, GPT-3.5), Claude, LangChain, RAG Systems, AI Agents • Automation: n8n, Make, Monday, Zapier, Workflow Automation • Custom chatbot implementation • AI powered content generation • Natural language processing features • LangChain & vector database setup ✔ Mobile App Development • Cross-platform: Flutter, React Native • Native: Kotlin (Android), Swift (iOS) • Firebase integration • REST API integration • Real-time features & push notifications ✔ Web, MERN & Python Development • MERN Stack: MongoDB, Express.js, React.js, Node.js • Frontend: React.js, Next.js • Backend: Node.js (Express.js/NestJS), Python (Django, Flask, FastAPI), PHP (Laravel, CodeIgniter) • CMS & Open Source: WordPress, Webflow • API development & automation with Python • Databases: MongoDB, MySQL, PostgreSQL ✔ eCommerce Development • WooCommerce • Shopify • PrestaShop • Magento • Custom eCommerce solutions ✔ Cloud & DevOps • AWS, Google Cloud, Azure • Docker • GitHub Actions • Jenkins ✔ Security & Integrations • JWT, OAuth 2.0, Firebase Auth • REST APIs, GraphQL • WebSockets ✔ UI/UX Design • Figma, Adobe XD • Responsive design • Wireframing & prototyping ✔ Additional Expertise • PHP, MySQL • REST API Integration • Third-party Plugin Integration • Hosting & Cloud Deployment • Payment gateway integration • App store deployment • Performance optimization • Code review & debugging • Third party API integration Note: I'm available full time and can start immediately. Please connect with me to discuss your project requirements. My priority is quality work and bug free code. I do not move to next step without proper test. less -
Hire juanjosec63
Hello! I'm Juan Jose C, a full-stack developer experience in building modern web app, game and integrating AI features. I specialize in creating dynamic, scalable solutions with a focus on AI-driven functionality, using technologies like C#, .Net, Core, WebGL, Three.js, Angular, React, Next.js, Node.js, Vue.js and...Hello! I'm Juan Jose C, a full-stack developer experience in building modern web app, game and integrating AI features. I specialize in creating dynamic, scalable solutions with a focus on AI-driven functionality, using technologies like C#, .Net, Core, WebGL, Three.js, Angular, React, Next.js, Node.js, Vue.js and Tailwind CSS. I also leverage the latest and most popular AI code tools to write fast, efficient, and scalable code, ensuring top-tier performance and innovation in every project. My Main Skills: Frontend: React, Next.js, Vue.js, TailwindCSS, Shadcn Backend: Node.js, Express, Laravel, Python, Django, REST APIs, FastAPI, GraphQL, WebSocket, Socket.io AI & LLMs: OpenAI (GPT-4, ChatGPT), Chatbot, LangChain, Cohere, Pinecone Cloud & Deployment: Vercel, AWS, Firebase Database: MySQL, MongoDB, PostgreSQL, Supabase, Adrant, ChromeDB Tools: Cursor, Lovable, Bolt.new, V0.dev, Zed, Warp, Figma less -
Hire SidUSA
Quantum Code Solutions is a software development agency specializing in Mobile App Development, Web Development, IoT, Embedded Systems, SaaS, CRM, AI, Cybersecurity, Automation, AR/VR and Game Development. We take on complex, unusual and technically challenging projects that other developers avoid. If your project...Quantum Code Solutions is a software development agency specializing in Mobile App Development, Web Development, IoT, Embedded Systems, SaaS, CRM, AI, Cybersecurity, Automation, AR/VR and Game Development. We take on complex, unusual and technically challenging projects that other developers avoid. If your project seems impossible, highly customized, difficult to integrate, or another developer couldn't finish it, bring it to us. We analyze the problem, engineer the solution and deliver with confidence. 📱 Mobile App Development Expert iOS, Android and cross-platform development using React Native, Flutter, Swift, SwiftUI, Kotlin, Java and Expo. We build MVPs, startup apps, enterprise apps, SaaS apps, marketplaces, eCommerce, healthcare, fintech, social, booking, delivery, streaming and real-time applications. Services include UI/UX, API integration, REST API, GraphQL, Firebase, WebSockets, push notifications, payments, subscriptions, GPS, Bluetooth/BLE, NFC, authentication, security, optimization, debugging, maintenance, App Store submission and Google Play publishing. 🌐 Web & SaaS Development Full-stack web applications, SaaS platforms, CRM systems, dashboards, portals, marketplaces and custom business software using React.js, Next.js, Vue.js, Nuxt.js, JavaScript, TypeScript, Node.js, NestJS, Express, PHP, Laravel, Python, Django and FastAPI. Expertise includes frontend, backend, API development, databases, cloud applications, multi-tenant SaaS, subscription platforms, eCommerce, automation, AWS, Azure, Google Cloud and Firebase. 🔌 IoT & Embedded Systems We build complete IoT solutions, from hardware and firmware to cloud platforms, APIs, dashboards and mobile apps. Expertise includes IoT, Industrial IoT, IIoT, embedded systems, firmware, Arduino, ESP32, ESP8266, Raspberry Pi, STM32, sensors, BLE, Wi-Fi, MQTT, TCP/IP, UART, SPI, I2C, GPIO, telemetry, device management, remote monitoring and device-to-cloud communication. 🔐 Cybersecurity Security-focused development including web security, mobile security, API security, authentication, authorization, OAuth, JWT, encryption, secure coding, OWASP, vulnerability assessment, security hardening, access control, cloud security, IoT security and secure architecture. 🤖 AI, Automation, AR/VR & Games We also develop AI applications, AI integrations, chatbots, LLM solutions, workflow automation, Unity games, Unreal Engine, AR, VR, XR, Metaverse and interactive experiences. 🚀 Why Quantum Code Solutions? We don't run from difficult projects. We run toward them. The work nobody wants to touch. The integration everyone says is too complicated. The application another developer couldn't finish. The legacy system that needs rescuing. The hardware that needs custom software. That's our kind of project. From architecture and development to testing, security, deployment and maintenance, we build technology that works in the real world. less -
Hire CVInfotech
Custom Software, AI and SaaS Product Studio. 14 Years, One Platform. We have built exclusively on Freelancer.com for 14 years. 500+ projects delivered. 5.0 rating across 500+ reviews. 23% repeat hire rate. This is our only sales channel, so every project gets our full attention, not overflow from an agency spread...Custom Software, AI and SaaS Product Studio. 14 Years, One Platform. We have built exclusively on Freelancer.com for 14 years. 500+ projects delivered. 5.0 rating across 500+ reviews. 23% repeat hire rate. This is our only sales channel, so every project gets our full attention, not overflow from an agency spread across ten platforms. What we build Custom software and SaaS platforms. Full-stack, scalable, and built to hand off cleanly. AI native products. ChatGPT, Claude and Gemini integrations, AI chatbots, voice agents, workflow automation. Ecommerce and marketplaces. Shopify, WooCommerce, multivendor platforms. WordPress, Laravel, React, Next.js and Node.js. Production-grade, not template work. You will work directly with Akash (CTO, 14 years on this platform) and Shubham or Divya (client relationship leads, named by clients in reviews going back years). The same people from your first message to final delivery. No account handoffs, no rotating project managers. 152 professional recommendations back that consistency. 100% in house team. No outsourcing. We treat every project as if we are the ones maintaining it three years from now, because often we are. Some clients have stayed with us since 2012. If your project does not need custom development, we will tell you before you spend the money. Core expertise Frontend: React, Next.js, Vue, Angular, TypeScript Backend: Node.js, Express, NestJS, Laravel, FastAPI, Core PHP Mobile: React Native, Flutter Databases: PostgreSQL, MongoDB, MySQL, Supabase Cloud: AWS, Google Cloud, Docker AI and Automation: OpenAI, Claude and Gemini APIs, RAG pipelines, LangChain, AI agents CMS and Ecommerce: WordPress, Shopify, WooCommerce, Wix, Squarespace, BigCommerce, Magento, Joomla, OpenCart, Weebly, Webflow, GoDaddy Website Builder, headless CMS Payments, Billing and Subscriptions: Stripe, Stripe Connect, PayPal, Razorpay, WooPayments, NOWPayments, ccBill, LemonSqueezy, Peppol Voice and Telephony: VAPI for inbound and outbound call orchestration with function calling, Twilio for phone number provisioning CRM and Automation: HubSpot, Zapier Lead Generation and Landing Pages: HubSpot, Odoo, Webflow, GoHighLevel, Apify, Outscraper Email and Communication: Postmark, Nodemailer, Mailivery, Gmail API, Microsoft Graph API, Yahoo IMAP, SendGrid AI Assisted Development: Cursor, Replit, Bubble, WeWeb, Lovable, Bolt, Base44 Let's talk about what you are trying to build. less -
Hire vikrant12112
**✅ Typically replies within 2 hours** --- ## ? Why Work With Me? - I’m a **full-time freelancer** — committed to your project every day of the week. - Available **7 days a week**, including weekends. - I offer **unlimited revisions** — your satisfaction comes first, always. --- ## ? What I Do I design and...**✅ Typically replies within 2 hours** --- ## ? Why Work With Me? - I’m a **full-time freelancer** — committed to your project every day of the week. - Available **7 days a week**, including weekends. - I offer **unlimited revisions** — your satisfaction comes first, always. --- ## ? What I Do I design and develop websites that help your business: ✔️ Streamline operations ✔️ Increase conversions ✔️ Deliver a seamless user experience Whether you need a fresh build or a redesign, I aim to make your site **fast**, **SEO-friendly**, **responsive**, and **visually stunning** — across all devices. --- ## ?️ Services Offered - ✅ **Custom HTML5 / CSS3 Templates** - ✅ Responsive design with **Bootstrap & jQuery** - ✅ **PSD → Pixel-perfect HTML/CSS/JS** - ✅ **PSD → Fully functional WordPress website** - ✅ **Custom WordPress development from scratch** - ✅ **eCommerce websites** (WooCommerce, Shopify custom themes) - ✅ **Bug fixing & site repair** - ✅ **Mobile/tablet optimization** - ✅ **Website redesigns** - ✅ **Email templates** --- I bring a blend of **clean code**, **user-first design**, and **strong communication** to every project. Let’s build something exceptional together. less
