Himansu P.

I'm a senior full-stack developer with 13+ years of experience building web applications, REST APIs, and cross-platform mobile apps for iOS and Android. I've published 35+ hybrid apps to the App Store and Google Play and handle projects end to end — from database design and backend logic to frontend, mobile, and deployment. Backend & Frontend • PHP, Laravel, MySQL, REST APIs • React, Angular, JavaScript, TypeScript • Node.js, CodeIgniter, Joomla Mobile Development • Ionic, Capacitor, Cordova — hybrid apps for iOS and Android • Native iOS and Android features using Capacitor plugins • 35+ apps published to App Store and Google Play AI & Automation • Claude API (Anthropic) — chat features, call analysis, content summarization • OpenAI API — GPT-based features, embeddings, completions • Whisper — speech-to-text transcription pipelines • Ollama — local LLM integrations • Twilio — SMS automation and voice workflows • AI coding tools: Claude, Codex — faster delivery, same quality Payment Gateways • Stripe, Square, Adyen, Klarna, PayPal, Laybuy, 2Checkout, Billsby SMS & Messaging APIs • Twilio, Plivo, Nexmo (Vonage) Industry Platforms & Integrations I have hands-on experience integrating with major automotive industry platforms, which is a rare combination for a full-stack developer. • Tekmetric — auto shop management API integration • Shopware — e-commerce platform development • ROWriter — repair order integration • Autoflow — automotive service workflow API • Protractor — automotive dealer management integration Testing & QA • REST API testing, regression testing, manual QA, test reports I write clean, maintainable code and communicate clearly throughout the project. Whether you need a backend API, a mobile app, an AI-powered feature, or a third-party integration in the automotive or e-commerce space — tell me what you're building and I'll give you an honest estimate of timeline and cost.