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I am an AI Mobile App Developer with 6+ years of experience building high-quality mobile applications for iOS, Flutter, and React Native. I specialise in creating smart, scalable, and user-friendly apps that integrate AI-driven features such as recommendations, automation, analytics, and intelligent workflows. I’ve successfully delivered MVPs and production apps across multiple niches, including wellness & mental health, fitness & habit tracking, productivity & focus apps, AI-driven health solutions, fintech, and subscription-based platforms. I’m comfortable working from Figma designs, PRDs, and existing codebases, with a strong focus on clean architecture and long-term maintainability. 📂 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀📱 AI Apps • MVPs for Startups • Sports & Entertainment • EdTech • Real Estate • FinTech • Social & Dating • Food Delivery • Loyalty Programs • Chat Apps • Marketplaces & E-commerce • Health & Fitness • Wellness • Travel & Ticketing • Video/Audio Calling • Productivity • Music Streaming What you can expect from me: • iOS, Flutter, and React Native app development • AI-powered apps (LLMs, smart automation, recommendations) • Wellness, fitness, focus, and habit-tracking apps • Productivity and screen-time management apps • Subscription-based apps (IAP, trials, paywalls) • Firebase, authentication, and backend integrations • App Store & Play Store deployment support • Clear communication and reliable delivery If you’re looking for a dependable developer who understands both AI technology and niche-focused mobile apps, I’d be happy to help turn your idea into a polished product. ⏱️ 𝗥𝗲𝗽𝗹𝘆 𝘄𝗶𝘁𝗵𝗶𝗻 𝟮𝟰 𝗵𝗼𝘂𝗿𝘀 🚀 𝗟𝗲𝘁’𝘀 𝘁𝘂𝗿𝗻 𝘆𝗼𝘂𝗿 𝗶𝗱𝗲𝗮 𝗶𝗻𝘁𝗼 𝗮 𝘄𝗶𝗻𝗻𝗶𝗻𝗴 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽 💡 Build with AI-driven features, a robust backend, and seamless UX 📞 𝗕𝗼𝗼𝗸 𝗮 𝗙𝗥𝗘𝗘 𝗰𝗮𝗹𝗹 - just 𝗰𝗹𝗶𝗰𝗸 𝗜𝗻𝘃𝗶𝘁𝗲 𝗼𝗿 𝗠𝗲𝘀𝘀𝗮𝗴𝗲 to get started 🤝

I help startups and businesses build AI-powered products, automation systems, and mobile applications that solve real business problems. From AI Agents and Voice AI solutions to SaaS platforms and mobile apps, I work with companies that want to move quickly from idea to launch without compromising quality. My expertise includes: ✅ AI Agents & Multi-Agent Systems ✅ AI Chatbots & LLM Applications (OpenAI, Claude, Gemini) ✅ Voice AI Solutions & Conversational Systems ✅ Workflow Automation & Business Process Optimization ✅ Flutter Mobile App Development (iOS & Android) ✅ SaaS Platforms & Startup MVPs ✅ Custom Web Applications & Backend Systems What sets me apart is that I focus on business outcomes, not just development. I help clients: • Validate ideas and launch MVPs faster • Automate repetitive workflows using AI • Improve customer engagement through AI-powered experiences • Build scalable products ready for growth Why clients choose to work with me: ✔ Top Rated Plus on Upwork ✔ Strong background in AI, SaaS, and Mobile Development ✔ Clear communication and transparent project management ✔ Fast execution with a focus on long-term scalability ✔ Ability to take projects from concept to production Recent projects include: • AI Agents for business automation • Real-time Voice AI platforms • AI-powered customer support systems • Logistics and operations management software • Startup MVPs launched under aggressive timelines Whether you're looking to build an AI Agent, Voice AI solution, SaaS platform, or mobile application, I can help turn your vision into a reliable, production-ready product. Let's discuss your project.

I bring 15+ years of end-to-end product development experience - from early hardware prototyping and embedded firmware to AI/ML integration, cloud architecture, and polished mobile applications. I have built and shipped real-world connected products across MedTech, Telematics, and Industrial IoT domains. As Founder and Director of LogiQlink Technologies, I lead strategy, engineering, and global delivery across IoT, Embedded Systems, AI/ML, Cloud, and Digital Experience verticals. Before that, I spent 12+ years at Treeline Interactive (San Diego) as Head of India Operations and Mobile Tech Lead - building high-performing teams and delivering complex technology products for US-based clients. WHAT I BUILD Hardware and IoT - End-to-end IoT product development from hardware prototyping to cloud integration - Embedded Linux, AOSP and Android Automotive OS (AAOS) customization - BLE, CAN Bus, MQTT, and industrial communication protocols - Sensor integration, real-time data pipelines, and device management platforms AI and ML - AI-powered features in mobile and IoT applications - ML model integration and on-device inference - Computer vision, predictive analytics, and intelligent automation Cloud and Backend - AWS and Firebase architecture, deployment, and scaling - REST API and backend development - Real-time systems, event-driven architecture, CI/CD pipelines Mobile Development - Native iOS (Swift) and Android (Kotlin/Java) - Cross-platform with React Native and Expo - MedTech, Telematics, and enterprise mobile applications HOW I ENGAGE Fractional CTO - I help startups and scale-ups set technical direction, define architecture, build engineering culture, and make high-stakes technology decisions without the cost of a full-time CTO. Tech Architect - I design the right system architecture from the ground up: cloud infrastructure, hardware-software integration, API design, and scalability planning so your team builds on a solid foundation. Individual Contributor - I roll up my sleeves and write production-quality code. Whether it is a mobile app, an IoT firmware module, or a cloud backend service, I deliver clean, maintainable, and well-documented code. Team Lead and Builder - I have built and managed distributed engineering teams across India and the US. I can help you hire, onboard, and structure your team for long-term success. WHO I WORK WITH - Startups needing a technical co-founder or fractional CTO to get their product off the ground - Scale-ups that need an experienced architect to design for scale - Enterprises looking for a seasoned IoT/mobile engineer to join a project team - Product companies building hardware and software connected products If you need someone who can think at the system level AND write great code - with 15+ years of proof - let's talk.

Need an iOS app that launches fast and scales cleanly? With 12+ years in mobile development, I’ve delivered 50+ apps and helped products reach 25M+ active users for startups and funded teams. I build AI-powered iOS, Flutter, and React Native apps that ship quickly, perform reliably, and grow with your users. 🎯 HOW I CAN HELP YOU AI MOBILE APP DEVELOPMENT Turn your app idea into an AI-powered mobile product that boosts engagement, automates repetitive tasks, and improves user retention. I’ve built AI features with OpenAI and Claude that increased engagement by 50% and reduced manual interactions by 30%. IOS APP DEVELOPMENT Launch an iPhone or iPad app that feels polished, scales cleanly, and keeps users coming back. My iOS work has supported products with 25M+ active users and apps with 50M+ downloads. ANDROID APP DEVELOPMENT Reach Android users with an app built for speed, stability, and long-term growth. I’ve delivered Android products that improved performance by 25% and served thousands of daily users. FLUTTER AND REACT NATIVE DEVELOPMENT Ship one codebase across iOS and Android to reduce development time and accelerate launch. In my cross-platform work, I’ve cut build time by 45% while maintaining strong performance and user engagement. MVP DEVELOPMENT Validate your idea faster with a mobile MVP that helps you launch, learn, and attract funding sooner. I’ve helped startups launch products that went on to raise more than $5M from investors after release. 🏆 RESULTS "Vijay has done a great job building our very complicated iOS app and taken it from start to finish. We will keep using him on future work!" – Nicholas Carlton, Client "Vijay continues to complete milestones on time with great quality code that works as designed. I will keep using Vijay." – John, Client "Vijay is responsive, provides quality work on time." – Arnas Jagminas, Client 🎖 12+ years of mobile app development experience 🏅 Delivered 50+ applications across iOS, Android, Flutter, and React Native 🎖 Built products used by 25M+ active users and 50M+ downloads See full case studies in my portfolio below. ✉️ 𝗠𝗘𝗦𝗦𝗔𝗚𝗘 𝗠𝗘 Have an app idea, MVP, or AI feature you want to build? Message me on Upwork for a free consultation and a clear plan to launch, improve, or scale your mobile app. I typically respond within 4 hours and can help with urgent projects when needed. 𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸 I build apps in Swift, SwiftUI, and UIKit, choosing the right stack for speed and stability. I connect Firebase, Supabase, and Node.js for authentication, data, and APIs, then add OpenAI API or Claude API when a product needs AI. I manage delivery with Git and ship releases through TestFlight and the App Store. I build iOS development in Swift, ship mobile app development for startups, and extend products with API integration and AI app development.

Embedded Systems Architect | ESP32, nRF52/nRF54, STM32, Real-Time Systems I design and debug real-time embedded systems where multiple microcontrollers, sensors, and communication layers must work reliably under real-world constraints. My core expertise includes embedded firmware, low-level communication, sensing systems, and distributed edge devices built around ESP32, nRF52/nRF54, STM32, Raspberry Pi, Embedded Linux, BLE, LoRa/LoRaWAN, MQTT, SPI, UART, I2C, RTOS, UWB, and radar-based sensing. I’m strongest when a project involves: - Multi-MCU coordination - Low-level communication debugging - Sensor integration such as radar, GPS, IMU, capacitive touch, or industrial interfaces - Edge gateways and cloud-connected embedded systems - Turning an unstable prototype into reliable product behavior What I do best - ESP32 / ESP-IDF firmware development - nRF52 / nRF54 firmware using Zephyr and nRF Connect SDK - STM32 embedded firmware and real-time system design - FreeRTOS, Zephyr, and CMSIS-RTOS v2 architectures - BLE, LoRa/LoRaWAN, MQTT, and multi-device coordination - Low-level debugging across SPI, UART, I2C, BLE, RTOS, and custom buses - Embedded Linux / Raspberry Pi edge gateway systems - Node-RED, Balena, Docker, and remote deployment workflows - Radar, UWB, and real-time sensing/control systems - Industrial IoT integration and system reliability hardening Highlights - Ported production firmware from ESP32 to nRF54L15/Zephyr, including BSP, communication layers, BLE transport, and OTA/DFU support - Worked on distributed multi-controller systems using ESP32, nRF, and STM32 - Integrated TI IWR6843 mmWave radar for presence sensing and spatial event handling - Brought up UWB ranging (DW3000) on STM32 in a multi-device system - Built ESP32 + Raspberry Pi edge systems using MQTT, Node-RED, Balena, and remote deployment workflows - Built LoRaWAN-based tracking and monitoring systems with cloud dashboards and alerting - Supported industrial IoT deployments involving automation, CI/CD, remote monitoring, and field reliability Relevant Experience - Commercial Embedded Sensing & Control Platform (NDA): ported production firmware from ESP32 to nRF54L15/Zephyr; integrated BLE with encrypted transport, external flash, and MCUboot OTA/DFU; improved custom wired communication reliability; contributed to radar-based sensing and multi-device coordination - Industrial IoT Gateway Systems: built ESP32 sensor node + Raspberry Pi gateway architectures with real-time edge processing, MQTT communication, and remote configuration - Tracking, Monitoring & Edge Integration: built telemetry and monitoring pipelines for distributed edge devices using LoRaWAN, Balena, Node-RED, Supabase, and cloud dashboards - Industrial Integration & Automation: worked with Phidget-based interfaces, Yaskawa robot-related connectivity, Node-RED automation flows, CI/CD, and Balena-based deployment - Automotive Embedded Foundation — Hella: 4+ years in automotive embedded systems; worked on body control and electronic power steering programs with AUTOSAR, MISRA-compliant embedded development, CAN/LIN, diagnostics, requirement derivation, software architecture, IBM Rhapsody, and TPT Tech Stack - MCUs / Platforms: ESP32, nRF52, nRF54, STM32, Raspberry Pi, Embedded Linux - RTOS / Frameworks: ESP-IDF, FreeRTOS, Zephyr, nRF Connect SDK, CMSIS-RTOS v2 - Protocols / Interfaces: SPI, UART, I2C, BLE, LoRa/LoRaWAN, MQTT, CAN, LIN - Specialized Areas: UWB / DW3000, TI IWR6843 mmWave radar, OTA / DFU, PLC-style communication, Protocol Buffers / nanopb - Languages: C, C++, Python If your project involves firmware, sensing, real-time communication, edge gateways, industrial IoT, or multi-device embedded systems, I can help design, debug, and harden it for real-world use.

⭐ Top Rated Plus Full Stack Developer | 100% Job Success | 50000+ Hours Logged | 14+ Years Experience Are you looking to build a scalable AI-driven SaaS or need a Shopify Integration Specialist to automate your e-commerce operations? As a Top Rated Plus Full Stack Developer with over 14 years of experience, I bridge the gap between advanced AI automation and robust web architecture. I specialize in building custom SaaS MVPs and engineering complex Shopify integrations that streamline workflows, sync data, and boost revenue. 🛠️ Core Expertise & Services Shopify Integration & Custom Apps: Developing public and custom Shopify apps using Remix, Node.js, and Shopify CLI. Expert in Shopify Admin API (GraphQL & REST), Webhooks, Theme App Extensions, and Cart Scripts. Shopify Ecosystem Syncing: Seamlessly connecting Shopify stores with ERPs, CRMs, and accounting tools like QuickBooks, Xero, HubSpot, Salesforce, and custom inventory systems. AI & SaaS Development: Building production-ready SaaS MVPs and AI agents. Expert in OpenAI API, Claude Code, LangChain, vector databases, and automated workflows using n8n and Make. Full-Stack Architecture: Engineering fast, secure, and scalable web applications using Next.js, React, Nuxt.js, Node.js, PHP (Laravel), Python (FastAPI/Django), and PostgreSQL/MongoDB. Fractional CTO Services: Providing high-level technical strategy, API architecture design, and tech stack selection for founders and CEOs looking to scale. 🎯 Shopify & Integration Use Cases I HandleAutomated Order Fulfillment: Linking Shopify webhooks to third-party logistics (3PL) and custom warehouses. AI-Driven E-commerce: Integrating AI chatbots for personalized product recommendations and customer support automation. Multi-Channel Syncing: Real-time synchronization of inventory, pricing, and customer data across multiple Shopify stores and external marketplaces. Payment & Communication Gateways: Customizing checkout experiences and setting up automated SMS/Email workflows via Twilio and Stripe. 💼 Why Choose Me? Proven Success: 100% Job Success Score (JSS) with consistent 5.0/5.0 star reviews from global clients. Business-Minded Development: I don’t just write code; I design systems that align with your business KPIs, security compliance, and user retention goals. Industry Experience: Deep technical domain knowledge across E-commerce, Fintech, Real Estate, and Healthcare sectors. Let’s turn your complex integration bottleneck or SaaS idea into a high-performing digital product. Click "Invite to Job" or "Message" to discuss your project requirements today!