Ankit K.

Senior Flutter & React Native developer with 10+ years of experience building AI-powered mobile apps, SaaS platforms, CRMs, marketplaces, and enterprise solutions. I help startups and businesses transform ideas into scalable iOS, Android, and Web applications using Flutter, React Native, Node.js, Firebase, Supabase, AWS, and OpenAI. With 10+ years of software development experience, I have delivered mobile applications, SaaS products, AI calling platforms, marketplaces, travel ERP systems, booking solutions, admin dashboards, payment integrations, and backend platforms used by real customers. Top Rated | 100% Job Success | 40+ Upwork Projects | 10+ Years of Experience What I Can Help You Build • Flutter and React Native applications for iOS and Android • Native Android and iOS integrations using Kotlin and Swift • SaaS platforms, admin dashboards, and customer portals • AI agents, voice AI, chatbots, and workflow automation • Node.js, Express.js, NestJS, and Laravel backend systems • REST APIs, webhooks, real-time systems, and third-party integrations • Marketplace, CRM, booking, fintech, travel, delivery, and business applications • Subscription billing, Stripe, in-app purchases, and payment gateways • Firebase, Supabase, PostgreSQL, MySQL, and MongoDB solutions • AWS, Docker, Nginx, CI/CD, and production deployment Mobile App Development I build and maintain cross-platform and native mobile applications using: • Flutter and Dart • React Native and TypeScript • Android with Kotlin and Java • iOS with Swift and Objective-C • Firebase, push notifications, deep links, maps, payments, widgets, and analytics I can develop a new application from the ground up, modernize an existing codebase, fix complex production issues, improve performance, integrate APIs, or prepare your app for App Store and Google Play deployment. AI, Voice AI & Automation I integrate AI into practical business products—not just demonstrations. My experience includes: • AI assistants and conversational applications • Voice AI calling platforms and real-time voice agents • OpenAI, Claude, Gemini, Azure OpenAI, and Amazon Bedrock integrations • Speech-to-text, text-to-speech, call transcripts, and conversation analytics • AI-powered lead qualification and CRM automation • Document processing, OCR, summarization, and content workflows • n8n, webhooks, background jobs, and custom automation pipelines • Calendar, CRM, telephony, payment, and third-party API integrations SaaS & Backend Development I design scalable backend systems and SaaS platforms with: • Node.js, Express.js, NestJS, and Laravel • React.js, Next.js, TypeScript, and modern admin dashboards • PostgreSQL, MySQL, MongoDB, Redis, Firebase, and Supabase • Multi-tenant architecture and role-based access control • REST APIs, GraphQL, WebSockets, queues, cron jobs, and webhooks • JWT, OAuth, social login, and secure authentication • Stripe subscriptions, usage billing, invoicing, and payment workflows Relevant Product Experience • AI voice-calling and CRM platform with telephony, billing, call tracking, transcripts, dashboards, and calendar integrations • Travel ERP covering leads, quotations, itineraries, hotel and flight costing, approvals, and PDF generation • Marketplace and service-booking applications with payments, chat, notifications, and admin management • Railway, metro, travel, Quran, prayer, and utility applications used by millions of users • SaaS dashboards, internal business tools, customer portals, and workflow automation systems Why Clients Work With Me • 10+ years of hands-on product development experience • Strong ownership from planning through production deployment • Clear communication and dependable progress updates • Practical architecture focused on scalability and maintainability • Experience working with startups, agencies, and distributed teams • Ability to understand both business requirements and technical implementation • Long-term support for scaling, maintenance, and future development How I Work I begin by understanding the product, users, existing architecture, and business objectives. I then divide the work into clear milestones, communicate progress regularly, share working builds or demonstrations, and identify technical risks early. Clients hire me when they need a senior developer who can take responsibility for the complete product—not only complete isolated development tasks. Share your requirements, designs, existing repository, or current technical challenge. I will review the scope and recommend a practical implementation approach.