Hire the Best AWS IoT Device Management Developers in Kolkata, IN

If you've built an app on Replit, Lovable, Base44 or Bolt.dev, I'm the guy who takes it across the finishing line. Over the past 2 years I've helped numerous entrepreneurs and startup founders take their application from their low code environment to production. I know quirks of each of these platforms and what changes to make to the application codebase to make it ready for go-live. Using a combination of Replit, Base44, Lovable and Bolt.dev I've cut down the development and launch time of MVP's and POC's from weeks to days and in many cases to hours. A bit about me, I'm a full stack developer and a cloud architect with 14+ years of experience in developing SaaS platforms, web applications, REST and Graphql API's for both web and mobile. As a cloud architect I also manage end-to-end software development cycle using git workflows, cloud deployment on AWS and Azure (using Docker and Kubernetes), maintenance, upgrade, and disaster recovery. I have the innate ability to understand current business process or software system and design and build new software system that vastly improves upon the current state. I can also act as your temporary CTO for your SaaS startup during the critical period when you’re trying to launch your MVP or get your platform off the ground. What type of development do I do: ********************************* New development: As a SAAS developer and cloud architect I specialize in developing mission critical and practical applications (SAAS or custom software) for both established businesses and startups. I have extensive experience in pure web application as well as cross platform applications and have built several high traffic, low latency applications (for both mobile and web) that need to scale very well in real time. SAAS prototyping for MVP: I can do rapid prototyping of SAAS platforms and being a SAAS developer with extensive experience I ensure quick turnaround in minimal time and budget. Auditing and taking over development and maintenance of existing platforms: I have extensive experience in taking over an existing web/mobile applications, audits it, work on improvements and maintain the for the owner. Domains/industries across which I have extensive expertise are: ************************************************************************ • SAAS platforms for real estate and mortgage companies • Real time stock market applications • Real time geo-location platforms • Background system • Social media platforms with very low latency • ERP, CRM, newsletter platforms for marketing Personal strengths: ********************** # I am very good at understanding and deciphering complex business logic and solve them programmatically. I also have very good knowledge of algorithms. # I have extensive experience in handling large MYSQL database with high volume traffic. I can write optimized sql queries and can audit sql queries to fix slow running queries. # I have practical and in-depth knowledge about code quality, various testing (unit testing, security testing, stress testing). I am very comfortable in setting up full stack application on bare-bone servers. I am also very comfortable working on terminal. # I have extensive experience in working in remote team and leading multi-member teams and managing source code through assembla and Bit Bucket. I am comfortable at working in both supervised and unsupervised environment. Below are some areas I have gained expertise over the years ********************************************************** Programming Languages: Python, Javascript, Node.js, PHP, Golang Relational database: MYSQL, PostGresql Nosql databases: Mongodb, Couchdb, Cassandra Nodejs frameworks: Express.js, Nest.js, Hapi.js Python frameworks: FASTAPI, Django, Flask Golang frameworks: Gorilla PHP frameworks: YII, CakePHP, Symfony2, Codeigniter Design tools: MYSQL workbench, Freemind, Visio, Pencil Internet protocols: HTTP, TCP/IP, SSL/TLS, POP3, IMAP I love to help people and am available for free 20 minutes consultation for most of the time. Drop me a message!

I am a results-driven AI & Full Stack Developer with 15+ years of experience delivering enterprise-grade solutions, including Shopify E-commerce stores, Shopify custom development, Shopify website speed optimization, WordPress websites, custom WordPress development, AI-powered platforms, SaaS products, CRMs, ERPs, and mobile/web applications. My passion lies in merging Artificial Intelligence with full-stack technology to help businesses automate, optimize, and grow faster. From intelligent chatbots and predictive models to responsive web apps, high-performing Shopify and WordPress websites, and mobile experiences, I ensure every solution drives measurable business outcomes. I have successfully worked with startups and global enterprises across industries such as Healthcare, FinTech, Education, E-commerce, Real Estate, and IT, transforming ideas into scalable digital products. ✅ Core Expertise : 🧩 Artificial Intelligence & Machine Learning ➤ LLM & Generative AI Development: Custom GPT-4 / ChatGPT solutions, fine-tuning models, AI assistants, and content generators. ➤ Natural Language Processing (NLP): Sentiment analysis, entity recognition, text summarization, and chatbot intelligence. ➤ Computer Vision: Image recognition, object detection, and video analysis. ➤ Predictive Analytics: Forecasting trends, recommendation systems, and business intelligence models. ➤ AI Integrations & Automations: Streamlining workflows with AI APIs, Zapier, and cloud functions. 💻 Full Stack, Shopify, WordPress & Enterprise Software Development ➤ React Stack: ReactJS, Redux, Next.js, GraphQL ➤ MEAN/MERN Stack: Angular, Node.js, Express, MongoDB ➤ SaaS, ERP, CRM Systems: Custom software for automation, operations, and analytics ➤ Shopify Development: Custom Shopify stores, Shopify 2.0, Liquid, custom themes, app integration, Shopify Plus, custom functionality, API integrations, migration, maintenance, and Shopify website speed optimization for improved Core Web Vitals, performance, and conversions. ➤ WordPress Development: Custom WordPress websites, Elementor, Gutenberg, WooCommerce, custom themes, plugin development, API integrations, website optimization, security, and maintenance. ➤ CMS & E-commerce: WordPress, Shopify, Webflow, Squarespace, Magento ➤ Mobile Development: React Native, Flutter ➤ Databases: MySQL, PostgreSQL, Firebase, MongoDB ➤ Cloud Functions: AWS Lambda, Firebase Cloud Functions 🏆 Key Achievements ✅ Developed an AI-driven Video Generator that converts text and images into dynamic marketing videos, boosting engagement by 300%. ✅ Built a GPT-powered Language Coach enabling conversational learning through role-play interactions. ✅ Deployed AI Chatbot System for a healthcare startup, reducing manual response time by 60%. ✅ Created Predictive Maintenance Model saving an industrial client 20% in annual operational costs. ✅ Delivered SaaS CRM and ERP Systems improving business efficiency for multiple enterprise clients. ✅ Developed high-performance Shopify stores with speed optimization, custom features, and conversion-focused user experiences. ✅ Built custom WordPress and WooCommerce websites with responsive design, performance optimization, and scalable functionality. ✅ Developed cross-platform mobile and web applications for industries like education, e-commerce, logistics, and hospitality. 💼 Why Clients Choose Me ✔ Deep expertise in AI + Full Stack Development, Shopify Development, WordPress Development, and Shopify website speed optimization, from strategy to deployment. ✔ Proven record of transforming data and ideas into scalable digital solutions. ✔ Strong business understanding - I focus on ROI, not just code. ✔ Transparent communication & end-to-end project management. ✔ Experience working with brands like Prime Pack Relocation, Little London Boutique, Sher-Wood Pre School, and more. 📞 Let’s Build Something Intelligent Whether you need AI integration, a custom Shopify store, Shopify speed optimization, a WordPress website, WooCommerce development, or a cutting-edge web/mobile application, let’s connect. Together, we can bring your ideas to life with innovation, precision, and measurable results.

I help startups and companies turn ideas into intelligent connected products — combining IoT hardware, AI systems, and scalable software platforms. With 8+ years of hands-on experience, I design and build complete solutions ranging from embedded devices and firmware to AI-powered analytics platforms and cloud applications. My work spans Arduino, Raspberry Pi, ESP32, STM32, and modern backend technologies used to power real-world IoT and AI systems. If you need someone who can build the entire technology stack — hardware, AI, cloud, and software — not just a small piece of it, you’re in the right place. 💡 What I Can Build for You 🔧 Custom IoT Product Development End-to-end development of connected devices — hardware architecture, firmware, cloud integration, and production-ready systems. 🧠 AI & Machine Learning Systems Custom AI models for predictive analytics, anomaly detection, automation, and intelligent decision-making in connected devices. 🖼️ Computer Vision Applications Face detection, object recognition, quality inspection, surveillance systems, and edge-AI solutions using OpenCV and modern ML frameworks. 💻 AI-Powered Software Platforms Development of intelligent dashboards, analytics platforms, and automation tools using Python, Node.js, React, and modern cloud infrastructure. 📡 Sensor Integration & Data Acquisition Environmental monitoring, industrial telemetry, motion detection, and real-time data processing systems. 🛠️ Firmware & Embedded Programming Highly optimized firmware for ESP32, STM32, ATmega, Raspberry Pi, and other microcontrollers. ☁️ Cloud IoT & Data Platforms Secure device connectivity, MQTT systems, AWS IoT, Firebase, Blynk, and custom APIs for remote monitoring and control. ⚙️ Rapid Prototyping & Hardware Development From concept → prototype → production-ready product with a strong focus on reliability and scalability. 🎥 See Real Projects & Builds YouTube: Sparklers – We Are The Makers 💬 Let’s build something innovative together. If you have an idea for an IoT device, AI system, or software platform, I can help you design, prototype, and launch it successfully.

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.

I am an embedded software developer and hardware designer with 6+ years of professional experience to lead your project to the best level. I provide optimal solutions for both hardware and firmware development, also provide prototypes and the small-scale production of designed hardware. I have expertise in the development of - ► Arduino-based hardware design and firmware development. ► ESP32 and 8266 based hardware & firmware design. ► Esp32 based BLE network, mesh network, ESP NOW mesh development, ► NRF51 based BLE development, ► LORA and LORAWAN based firmware, hardware development and prototype design, ► Chirpstack.TTN server deployment on the local, remote server as well as AWS server. ► AWS +NODE-RED+MQTT+GRAFANA+INFLUX DB-based virtual server deployment and custom UI design. ► The THINGS BOARD deployment on local/remote /AWS server with SSH. ► STM32 - ARM-based firmware development & hardware design and prototype manufacturing. ► Raspberry Pi based custom MQTT web server with custom UI design ► Complete Prototype development with small-scale production capabilities. My hardware design includes a Printed circuit board design with customized requirements. I provide complete PCB layout design, prototype PCB board manufacturing, testing of PCB board with advanced tools, and on-demand I provide small-scale production of the hardware /PCB. Price will be negotiable on hardware design and development. My PCB design features include - ► Multilayer PCB design. ► Both rigid and rigid-flex design. ► Provide BOM with the most available component list. ► Provide Gerber and ECAD files for manufacturing. ► Support prototype and small-scale production (PCB). My last project is " LORAWAN BASED ENERGY METER EXTENSION", where I have to measure the Phase voltage, Line voltage, phase current, Line current, Total energy, power factor and send them to the TTN server using LORAWAN based prototype node device and Dragino gateway. The device was successfully worked and installed in the industry environment. You can see details of its working in my portfolio. My goal is to provide the best quality services at an affordable price within a reasonable timeframe. Please visit my website for more details - www. bit-plexlab.com

I don’t just write code. I work as a product partner helping refine ideas, suggesting improvements, and ensuring every project is aligned with your business goals. Clients value me for delivering on time and for my ability to take ownership of the product vision, not just complete tasks. Along the way, I’ve built AI chatbots with 50K+ users, AI agents that reduced workload by 60%, and full-stack SaaS products generating $2M in monthly revenue. I’ve also developed a product selected by Y Combinator and another that was acquired within 2 years. My unique edge is combining AI innovation with full-stack development — building scalable products, intelligent automations, and platforms that deliver measurable business outcomes. 🔹 Core Expertise ✅ AI Product Development: GPT-powered apps, chatbots, AI agents ✅ Automation & Integration: n8n, Zapier, Make, workflow orchestration, API integrations ✅ Frontend: React.js, Vue.js, React Native, TypeScript, HTML5, CSS3, Bootstrap ✅ Backend: Node.js, PHP, Laravel, WordPress ✅ Databases: MongoDB, MySQL, PostgreSQL ✅ Cloud & DevOps: AWS, Azure, GCP, DigitalOcean ✅ Design & Prototyping: Figma 📈 Success Snapshot ✅ Built chatbots with 50K+ users and AI agents → saved teams 20+ hours weekly ✅ Helped scale SaaS platforms from MVP to 50,000+ users with strong uptime ✅ Managed a SaaS product generating $2M monthly revenue ✅ Built a product selected by Y Combinator and another acquired in 2 years ✅ Delivered automation pipelines with n8n/Zapier/Make → improved efficiency by 60% 🔹 Why Clients Work With Me ✅ Blend of full-stack engineering + AI expertise ✅ Proven record of building products that generate revenue, get funded, and get acquired ✅ Take ownership: I contribute ideas, refine features, and improve product vision — not just execute tasks ✅ Always deliver on time, with a transparent, milestone-driven workflow ✅ Balance of technical depth + product mindset, ensuring solutions that grow with your business 👉 If you’re looking for a developer who can build scalable apps, integrate AI, and act as a true product partner with ownership, let’s connect. For Search Optimization: AI Developer, Full-Stack Developer, SaaS Developer, Node.js Developer, React.js Developer, Vue.js Developer, Chatbot Developer, AI Agent Developer, Automation Developer, n8n Expert, Zapier Specialist, Make Expert, Workflow Automation, GPT Integration, AI SaaS Developer, Backend Developer, Frontend Developer, Cloud Developer, AWS Developer, GCP Developer, Azure Developer, Figma UI/UX