Hire the Best REST API Developers in Panchkula, IN

SaaS Developer | Full Stack SaaS Developer | React, Next.js, Python, Node.js | AI & LLM Applications I am a Full Stack SaaS Developer specializing in building scalable, subscription-based SaaS products and AI-powered web applications from concept to launch. I help startups, founders, and businesses transform ideas into production-ready software using React, Next.js, JavaScript, TypeScript, Node.js, Python, PostgreSQL, MongoDB, AWS, and modern cloud technologies. Over the years, I have helped companies build scalable SaaS applications, customer portals, CRM systems, ERP platforms, marketplaces, AI-powered products, internal business tools, membership platforms, workflow automation solutions, and intelligent business platforms powered by Large Language Models (LLMs). My expertise covers the complete SaaS development lifecycle from product architecture and MVP development to AI integration, scaling, optimization, and long-term maintenance. Whether you're looking to build a new SaaS platform, modernize an existing application, create a customer-facing dashboard, implement subscription billing, develop AI-powered workflows, or build a complex multi-tenant application, I can help deliver a secure, scalable, and user-friendly solution. ### 𝗦𝗮𝗮𝗦, 𝗣𝘆𝘁𝗵𝗼𝗻 & 𝗔𝗜 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 ✓ SaaS Product Development ✓ Full Stack Development ✓ Multi-Tenant SaaS Architecture ✓ MVP Development for Startups ✓ B2B & B2C SaaS Platforms ✓ Enterprise Software Development ✓ Customer Portals & Self-Service Platforms ✓ Subscription-Based Applications ✓ Stripe Billing & Payment Integrations ✓ REST API & GraphQL Development ✓ Authentication & Authorization Systems ✓ Role-Based Access Control (RBAC) ✓ Admin Dashboards & Analytics Platforms ✓ CRM & ERP Development ✓ Workflow Automation Platforms ✓ AI SaaS Applications ✓ AI Chatbots & AI Assistants ✓ OpenAI, Anthropic Claude & Gemini API Integration ✓ Retrieval-Augmented Generation (RAG) Applications ✓ AI Workflow Automation ✓ Prompt Engineering & LLM Integration ✓ Python Backend Development (FastAPI, Django) ✓ API Integrations & Third-Party Services ✓ Database Architecture & Optimization ✓ Cloud Deployment & DevOps ✓ Performance Optimization & Scalability ### 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 React.js • Next.js • JavaScript • TypeScript • Node.js • Express.js • NestJS • **Python** • FastAPI • Django • PostgreSQL • MongoDB • MySQL • Prisma • Supabase • Firebase • AWS • Vercel • Docker • Redis • Tailwind CSS • Material UI • Stripe • OpenAI API • Anthropic Claude API • Google Gemini API • LangChain • Vector Databases • Pinecone • Weaviate • FAISS • REST APIs • GraphQL I focus on building software that not only works but is designed for growth, scalability, maintainability, AI readiness, and long-term business success. My goal is to become a long-term technology partner for startups and businesses looking to build world-class SaaS products and AI-powered platforms. ### 𝗦𝗲𝗮𝗿𝗰𝗵 𝗺𝗲 𝘂𝘀𝗶𝗻𝗴 𝗸𝗲𝘆𝘄𝗼𝗿𝗱𝘀 SaaS Developer, Full Stack SaaS Developer, SaaS Application Developer, SaaS Development, SaaS Engineer, SaaS Architect, React Developer, Next.js Developer, JavaScript Developer, TypeScript Developer, Node.js Developer, **Python Developer**, FastAPI Developer, Django Developer, AI Developer, AI Engineer, AI SaaS Developer, LLM Developer, OpenAI Developer, Claude API Developer, LangChain Developer, RAG Developer, AI Automation Developer, Generative AI Developer, AI Chatbot Developer, Multi-Tenant SaaS Developer, Startup MVP Developer, Product Engineer, Software Engineer, Web Application Developer, CRM Developer, ERP Developer, Dashboard Developer, Subscription Platform Developer, Stripe Integration Expert, API Integration Developer, Cloud Application Developer, Full Stack Engineer.

I am Jitender Sharma, a Senior Web Developer by professional. I have more than 8 years of experience in website development and website design. In those years, I have worked across numerous domains and developed a wide range of websites for a range of businesses and organizations. I am an expert in PHP frameworks such as WordPress, Magento, Joomla, Drupal, and Laravel. I bring a wealth of expertise to every project. From customizing themes and plugins to optimizing website performance, I excel in delivering tailored solutions that exceed client expectations. My proficiency extends to Shopify, API integration, WooCommerce, and BigCommerce, ensuring seamless functionality and user experience across various platforms. Additionally, I am well-versed in Wix and Elementor and adept at crafting visually stunning websites with intuitive navigation and responsive design. As a dedicated freelancer, I am committed to delivering high-quality work on time and within budget, striving to provide clients with the best possible solutions for their online presence. I always provide good services that include very good quality code and that, too, in quick time. My Main Skills are: ▲ WordPress Component, Plugins, and Modules ▲ WordPress Template Development ▲ Joomla Virtuemart to WordPress WooCommerce ▲ WordPress BigCommerce ▲ Wordpress Themes Development ▲ Web & Graphic Design I have worked for integrating following API’s on websites: - DNS easymade API - Amazon API - Ebay API - Salesforce API - Facebook, LinkedIn, Gmail API etc. I have worked on several API frameworks and authentication tokens in the past, listed below are a few of my references: API Framework: - Zend-Framework - DAVE - Epiphany - FRAPI - Recess - Slim - Tonic - Rest

Top Rated WordPress & AI Developer on Upwork 🕒 5000+ Hours on Upwork ✅ 15+ Years of Experience in Web Development ✅ Delivered 600+ Websites & Digital Products 🤖 AI Automation | LLM Apps | Python Development Hello! I'm Rajinder, a Full Stack Developer specializing in AI-powered web applications, automation systems, and scalable digital products. Over the last 15+ years, I’ve worked with startups, agencies, and growing businesses to build high-performing websites and custom platforms. Alongside my strong background in WordPress and full stack development, I’ve recently been focused on building AI-driven solutions using LLMs, OpenAI APIs, Python, and automation workflows. I help businesses integrate AI into their products and operations — from AI chatbots and workflow automation to custom dashboards, API integrations, and intelligent web applications. While my Upwork portfolio primarily showcases web development projects, I’ve recently been working extensively on AI-based solutions and can share relevant work samples during project discussions. I specialize in these areas: 🤖 AI DEVELOPMENT & AUTOMATION ✔ AI Chatbot Development (OpenAI / ChatGPT APIs) ✔ LLM-based Applications & AI Integrations ✔ AI Workflow Automation ✔ Python Automation Scripts & Backend Logic ✔ AI-powered Internal Tools & Dashboards ✔ Prompt Engineering & AI-assisted Systems ✔ API Integrations & Automation Pipelines ✔ AI Content & Customer Support Systems ✔ Custom GPT Integrations & AI Features ✔ Business Process Automation using AI 💻 FULL STACK & WEB DEVELOPMENT ✔ WordPress Development (Elementor, ACF, Divi, WPBakery & more) ✔ Custom WordPress Theme & Plugin Development ✔ Figma to WordPress | PSD to WordPress ✔ WooCommerce & eCommerce Solutions ✔ REST API Development & Third-Party Integrations ✔ Responsive Website Development ✔ Website Performance Optimization ✔ HTML5, CSS3, JavaScript, PHP & MySQL ✔ Frontend & Backend Development ✔ CMS Migration & Maintenance 💻 TECH STACK ✔ Python ✔ OpenAI APIs ✔ PHP ✔ JavaScript / jQuery ✔ HTML5 / CSS3 ✔ MySQL ✔ REST APIs ✔ WordPress ✔ WooCommerce ✔ Elementor ✔ Git & Deployment Workflows I focus on building clean, scalable, and business-oriented solutions with strong attention to performance, usability, and automation. Whether you need an AI-powered application, workflow automation, chatbot integration, or a reliable developer for your web platform — I’d be happy to help. 🤝 Available for long-term collaborations, product development, and agency partnerships. AI Developer, OpenAI API Developer, ChatGPT Developer, LLM Developer, Python Developer, AI Automation, AI Chatbot Development, Prompt Engineering, AI Integration, Workflow Automation, Full Stack Developer, WordPress Developer, API Integration, Custom Web Application, Backend Developer, Frontend Developer, WooCommerce Developer, Elementor Expert, PHP Developer, JavaScript Developer, Automation Specialist, SaaS Development, Responsive Web Development, Custom Dashboard Development, GPT Integration

Full Stack Developer | Web & Mobile App Developer | PHP Laravel Expert | Flutter App Developer | Bubble Developer | React Developer | SaaS Application Developer | AI Developer | API Integration Expert | Cross-Platform App Developer | MVP to Enterprise Development | Secure & Scalable Systems Builder | Custom CRM & ERP Developer I’m a Full Stack Web & Mobile App Developer with 12+ years of experience designing, developing, and scaling SaaS platforms, enterprise systems, and cross-platform mobile apps. I specialize in crafting secure, high-performance, and user-focused digital products that drive real business outcomes. From AI-powered platforms and HIPAA-compliant healthcare apps to marketplaces, CRMs, and automation tools, I turn complex ideas into scalable, maintainable systems using modern technologies like PHP (Laravel), React, Flutter, and Bubble. Full Stack Expertise: - Backend Development: PHP, Laravel, CodeIgniter, CakePHP, Node.js - Frontend Development: React.js, Vue.js, HTML5, CSS3, TypeScript, Tailwind CSS - No-Code/Low-Code: Bubble Developer (Workflows, API Integrations, Dynamic UI) - Mobile App Development: Flutter (Cross-platform), Swift (iOS), Java/Kotlin (Android) - Databases: MySQL, PostgreSQL, MongoDB, Firebase - Cloud & DevOps: AWS (EC2, S3, SES, Lambda), Google Cloud, Docker, CI/CD What I’m Really Good At: CRM & Workflow Automation:I've built and customized systems using Zoho, Salesforce, and HubSpot integrating Twilio, SendGrid, Mailchimp, and more to create fully automated, intelligent workflows. API & System Integrations: From RESTful and GraphQL APIs to payment gateways like Stripe and PayPal, I know how to connect systems and ensure seamless communication between them. Cloud & DevOps: Well-versed with AWS (EC2, S3, SES, Lambda) and Google Cloud to deliver secure, scalable infrastructure. Real-Time Communication: Twilio, WebRTC, Zoom, Quickblox, you name it. I’ve built chat, video call, and telemarketing features from the ground up. Mobile & Cross-Platform Apps: Whether native (Swift, Java) or cross-platform (Flutter, FlutterFlow), I build mobile experiences that are intuitive and lightning fast. Industries I’ve Helped Transform: SaaS & B2B Platforms – From e-learning and telehealth to logistics and real estate E-commerce & Marketplaces – Payment systems, AR try-ons, inventory automation Healthcare – HIPAA-compliant tools, patient management, and telemedicine Logistics & Fleet – Real-time tracking, route optimization, and driver dashboards Data Security Focus: Security is baked into every layer of my development process. From implementing encrypted APIs and role-based access to securing cloud storage with AWS IAM policies and SSL encryption, I ensure that data is protected especially in platforms dealing with sensitive information like healthcare or payments. How I Work: -- Agile methodologies with weekly sprint updates and clear deliverables -- Clean, maintainable code that your future devs will actually thank me for -- Transparent communication and proactive problem-solving -- Deep understanding of both frontend finesse and backend performance -- Long-term mindset , build for scalability, performance, and future growth Core Skills & Roles: Senior Full Stack Developer Web & Mobile App Development SaaS Application Development AI-Powered Applications Cross-Platform Development Technologies & Frameworks : PHP | Laravel | CodeIgniter | CakePHP Bubble Developer (No-Code/Low-Code) Flutter Developer (iOS & Android) Swift iOS Development React | React Native | Node.js JavaScript | TypeScript Specialized Expertise : API Development & Integrations Payment Gateway Integration Marketplace Platforms Crowdfunding Platforms Healthcare & HIPAA-Compliant Apps Real-time Collaboration Tools Routing & Logistics Applications Learning Management Systems (LMS) Custom CRM & ERP Development Value-driven Keywords Scalable Solutions User-Friendly UI/UX Secure Applications End-to-End Product Development MVP to Enterprise Scale If you’re looking for a Full Stack Web and Mobile Developer who can connect business vision with technical excellence — from MVP to enterprise scale — let’s talk. Let’s build something awesome together !