I am the Founder & Principal Consultant at Iottive, where I lead high-performance engineering teams to design, architect, and build sophisticated IoT and AIoT products for global clients. With 15+ years of deep hands-on experience, I specialize in transforming complex hardware-software ideas into robust, scalable, production-ready connected systems.
My work sits at the intersection of embedded engineering, wireless connectivity, cloud architecture, and AI-driven intelligence — enabling organizations to move faster, reduce engineering risk, and build products that stand up to real-world industrial, medical, and consumer environments.
If you’re looking for a consultant who can step in at a senior architecture level, bring clarity to your roadmap, design the right system architecture, and then guide your engineering stack toward successful delivery, I’m the partner you want.
I support clients as a technical advisor, lead engineer, and fractional IoT architect, depending on the engagement.
How I Work (High-End Consulting Model)
I operate as a:
- Fractional CTO
- Fractional IoT Architect
- Senior Technical Advisor
- Lead Engineer for Complex Subsystems
- R&D Partner for New Product Development
- Technical Due Diligence Reviewer
Why Clients Pay a Premium to Work With Me
- I bring founder-level ownership, speed, and clarity.
- I reduce engineering uncertainty — the most expensive part of IoT development.
- I combine hardware, firmware, cloud, and AI knowledge — rare in one person.
- I don’t guess — I architect solutions based on real-world deployments.
- I lead teams and systems with long-term reliability in mind.
- Clients come to me when they can’t afford false starts, delays, or re-architecture — and when they need an expert who can think 10 steps ahead.
What I Bring to High-Level Projects
1. System Architecture for Complex IoT Products
- I design end-to-end architectures covering hardware, firmware, connectivity, cloud, apps, data flow, device security, and scalability.
2. Embedded, Firmware & Connectivity Leadership
- Zephyr, FreeRTOS, ESP-IDF
- BLE 5.x, Mesh, Wi-Fi, NFC, UWB, Matter, Thread
- OTA, secure boot, power optimization
- I bring a strong combination of low-level engineering and system-level thinking, ideal for teams building new hardware devices.
3. Mobile + Device Integration (iOS/Android/Flutter/ReactNative)
- I architect and build mobile experiences that sync reliably with embedded devices — pairing, control, OTA, dashboards, alerts.
4. Cloud, Data & Digital Twins
- AWS IoT Core, Azure IoT Hub, MQTT/Kafka pipelines, digital twins, role-based access, observability.
- This includes designing multi-layered systems for manufacturing, energy, healthcare, and consumer IoT.
5. Edge AI & Intelligent Automation
- Predictive maintenance, anomaly detection, vision analytics, on-device inference.
6. Pilot, Certification & Production Advisory
- I guide clients from prototype → pre-production → compliance (CE/FCC) → manufacturing scale.
Industries Where I Deliver the Most Impact
🏭 Industrial & Manufacturing
- Predictive maintenance, digital twins, AGVs, condition monitoring, energy management, QA automation.
🏥 Healthcare & Medical IoT
- Remote patient monitoring, RTLS, equipment tracking, compliance-driven devices (HIPAA-ready).
⚡ Energy & Utilities
- Smart metering, grid monitoring, field telemetry, outage detection.
🛒 Retail & Connected Commerce
- Smart shelves, automated checkout, inventory tracking, real-time analytics.
I work best in environments where reliability, security, real-time operation, and scalability matter.
Engagement Style
- High-touch, transparent communication
- Technical leadership + hands-on engineering
- Strong attention to architecture, quality, and long-term maintainability
- Ability to work with your internal teams or bring my own specialists through Iottive
Typical Client Profiles
- Funded startups building a connected product
- Enterprises modernizing manufacturing or medical systems
- Hardware companies needing BLE/firmware/cloud expertise
- Teams preparing for compliance, pilots, or production
Core Technical Expertise
- Embedded & Hardware
- PCB & Circuit Design
- Zephyr, FreeRTOS, ESP-IDF
- Sensor architectures
- Power optimization
- OTA, secure boot, TPM
- BLE, Wi-Fi, UWB, Zigbee, Matter, Thread
- Mobile & UX for Connected Devices
- iOS / Android
- Flutter & React Native
- BLE pairing, control, logging
- Real-time dashboards
- Cloud & Backend
- AWS IoT Core
- Azure IoT Hub
- MQTT, Kafka, gRPC
- Digital Twins
- Role-based access & observability
- AI & Analytics
- Predictive maintenance
- Anomaly detection
- TensorFlow Lite, ONNX, Edge AI
Internet of Things
Android
Core Bluetooth
iOS
Swift
iBeacon
Bluetooth
Java
HealthKit
Mobile App Development
Android App Development
iOS Development
Mobile App Testing
Industrial Internet of Things
Product Development
Ranjeet Singh S.
Chandigarh, India
$20/hr
4.5
216 jobs
As a seasoned programmer, I bring a wealth of technical expertise and a proven track record in native and cross platform mobile app development for iOS and Android platforms. My skills encompass a wide array of functionalities, including Push and APNS, Geo-fencing, Payment processing (card readers), maps, mobile device management, QR code scanners, Blockchain and integrations with services such as Paypal, Stripe, and Parse.
In addition to mobile and backend development, I have hands-on experience integrating AI-powered solutions into applications, including intelligent chatbots, recommendation engines, predictive analytics, Computer Vision and automation workflows. I have worked with modern AI APIs and frameworks to enhance user experience through personalization, smart insights, and real-time decision-making.
Listed below is an overview of my skills and the tools I have worked with.
Languages :
Flutter, FlutterFlow, Dart, React.js, React Native, SwiftUI, Objective-C, Kotlin, T-SQL, C#, JavaScript (ES6+), HTML5, Swift 5+, CSS3, TypeScript, Python, JSON
Frameworks :
Core Foundation, iOS SDK, Core Data, Core Video, Core Location, MapKit, Social Framework, Core Media, AVAudioEngine, Flutter SDK, Material & Cupertino Widgets, Jetpack Compose (basic)
Libraries / APIs :
Core Animation, Facebook SDK, jQuery, Google Maps SDK, AFNetworking, CocoaPods, SQLite, Core Graphics, SpriteKit, Parse iOS SDK, Mixpanel SDK, MailChimp API, Node.js, Supabase, Firebase (Auth, Firestore, FCM, Crashlytics), REST APIs, GraphQL, WebSockets
Tools :
iOS Simulator, Apple Xcode, Android Studio, Visual Studio, VS Code, Git, Bitbucket, GitHub, SVN, Postman, Firebase Console, Fastlane, TestFlight, MailChimp, Jira
Platforms :
iOS 15–26, Android 10–15, Flutter Mobile (iOS & Android), Flutter Web, Flutter Desktop (Windows, macOS, Linux)
CMS / ERP / CRM :
Django-Oscar, Django-SHOP, Mezzanine, Odoo – OpenERP (Open Source ERP & CRM), Headless CMS, Custom Admin Dashboards
Web / Backend Tools :
jQuery, Yahoo UI Library, AngularJS, SQLAlchemy, Peewee, Motor, PyMongo, Django MongoDB Engine, Express.js, NestJS
Server end :
Azure, Firebase, Google Cloud Functions, AWS (EC2, S3, Lambda), Docker, CI/CD Pipelines
Paradigms :
Agile Software Development, Scrum, Kanban, MVC, MVVM, Clean Architecture
Misc :
iOS Video, Backend Integration, Stripe Payments, PayPal, Fintech, Push Notifications, Real-time Sync, Barcode & QR Code (QR Code, DataMatrix, Code39, Code128, PDF417, AZTEC, UPC, EAN)
Storage :
Microsoft SQL Server, Firebird, MySQL, SQLite, MongoDB, DynamoDB, Redis, MemSQL, Firebase Firestore, Cloud Storage
Core specialization in:
- Fintech apps- Payments apps, digital wallets, Loyalty rewards, stock trading, referral
- Utility apps- Call recorder, keyboard, food delivery
- Communication- social networking, audio/video calling
- Real estate apps
- IoT- BLE/ibeacons, Healthcare
- On demand service booking apps
- Sports apps
- AI & Machine Learning – Predictive analytics, recommendation systems, personalization, chatbots, fraud detection, intelligent automation
These verticals can be verified from my profile too.
I'm well versed in using wallet based SDKs including Mastercard, Pay- Pal, Braintree, Simply Commerce, Quickpay, Razorpay SDK etc for e-wallet based applications. I have worked extensively with stock trading apps with vast knowledge in exante.eu, Meta trader 5, socket based programming for real time stock price alerts.
I can integrate a number of crypto-currency wallets for your app including Bit-coin Core, Electrum, Jaxx cryptocurrencies, Rippex and Exodus that offer an easy-to-use interface, better protection against fraud, Lightweight and easy to set up and easy recovery for BTC using a wallet seed.
I thrive on challenges and exhibit hyperactivity when problem-solving. My ability to think deeply and beyond the obvious sets me apart.
Let's collaborate and discuss your ideas. I can help you achieve the best solutions for your business needs.
I just completed one of my ongoing projects and currently seek new avenues.
Internet of Things
Java
JavaScript
Dart
Kotlin
Amazon Web Services
Apple Watch
NFC
Software Architecture & Design
Project Management
Business Analysis
Android
Ionic Framework
Firebase
React Native
Swift
Prototyping
Muhammad A.
Multan, Pakistan
$20/hr
5.0
14 jobs
🚀 Full-Stack & IoT Systems Engineer | Tuya Cloud Expert | Homeassistant
5+ Years Experience
⭐ Short Overview (for busy clients)
I build production-grade IoT systems and backend platforms, from device integration to cloud control and user-facing applications.
Former Tuya IoT Cloud Engineer, with hands-on experience in OEM apps, SDKs, device APIs, and large-scale smart device ecosystems.
I specialize in connecting:
Devices → Cloud → APIs → Applications → Automation
If you need someone who can integrate devices, stabilize systems, and build scalable backend logic, I can handle it end-to-end.
🌐 IoT & Tuya Cloud Expertise
➤ Full Tuya Cloud integrations (Device APIs, Locks, Cameras, Energy systems)
➤Tuya Solar Solution aka CONOW
➤TuyaClaw
➤TuyaAI
➤ OEM app development & Smartlife App SDK customization
➤ Tuya MiniApp development
➤ Tuya device Panel customization
➤ MQTT, Zigbee, BLE integrations
➤ Smart locks (TTLock, Tuya) with Airbnb / rental systems
➤ Real-time device control & automation logic
➤ Industrial & smart home system architecture
Strong device-level + cloud-level control
💻 Full-Stack & Backend Development
➤ Scalable APIs (FastAPI, Node.js, Django)
➤ SaaS backend systems
➤ Database architecture (MongoDB, PostgreSQL, MySQL)
➤ Real-time systems & event-driven architecture
➤ Authentication, RBAC, multi-tenant systems
🏠 HomeAssistant
➤ Home Assistant setup, cleanup, and restructuring
➤ Automation design (YAML / Node-RED)
➤ Dashboard (Lovelace) + tablet kiosk setup
➤ Integration with Philips Hue, Sonos, Tuya, etc.
➤ Calendar-based and rule-based automations (Airbnb setups)
☁️ Cloud & Deployment
➤ AWS, GCP
➤ Docker-based deployments
➤ Scalable backend infrastructure
➤ Monitoring & logging
🎯 What Clients Hire Me For
✔ Tuya Cloud integrations that actually work reliably
✔ IoT system architecture (device → cloud → app)
✔ Home Assistant systems that are clean and stable
✔ Backend systems for smart devices and automation
✔ Fixing broken or unstable IoT setups
🧩 Why Work With Me
➤ Former Tuya IoT Cloud Engineer
➤ Strong system design mindset
➤ Clean, maintainable architecture
➤ Fast execution, no overengineering
➤ Clear and direct communication
🚀 If you're building or fixing an IoT or Tuya-based system,
I’ll make sure it works properly, not just partially.
SPEED is my Major Weapon.
Cryptography
Industrial Internet of Things
Python
Software Development
OCR Algorithm
API Integration
Desktop Application
Artificial Intelligence
AI Development
Smart Home Framework
Node.js
Full-Stack Development
AWS IoT Core
Next.js
Home Automation
Haris R.
Islamabad, Pakistan
$20/hr
4.6
57 jobs
Profile Overview:
Are you seeking a reliable partner to transform your innovative ideas into robust IoT, mobile, or web applications? With over a decade of experience, I specialize in delivering end-to-end solutions that drive business growth and operational efficiency.
What I Offer:
• IoT & Embedded Systems:
Development of real-time dashboards for monitoring and analytics.
Integration of AI-driven insights for predictive maintenance and decision-making.
Expertise in firmware development using C, C++, and Python.
Proficient in communication protocols like Bluetooth and AWS IoT.
Implementation of automated alert systems for critical event notifications.
• Mobile & Web Development:
Creation of high-performance Android and iOS applications using Flutter.
Design of responsive web platforms utilizing React, HTML, CSS, and JavaScript.
Development of secure backend systems with Node.js.
Seamless integration of RESTful APIs for efficient system communication.
• AI Automation:
Design and deployment of intelligent automation workflows using machine learning and AI tools.
Integration of NLP, computer vision, and predictive models to optimize business processes.
Development of smart bots and AI agents for task automation and data processing.
Streamlining operations by combining AI algorithms with custom software solutions.
• Software Engineering & Cloud Solutions:
Full-stack development ensures cohesive front-end and back-end integration.
Deployment of scalable and secure cloud infrastructures on AWS.
Implementation of CI/CD pipelines adhering to Agile and DevOps methodologies.
Incorporation of AI & machine learning for enhanced application intelligence.
Robust cybersecurity measures to protect data integrity and privacy.
• Hardware & PCB Design:
Advanced circuit and PCB development using Altium, Eagle, and KiCAD.
Hands-on experience with microcontrollers like ESP32, Arduino, Raspberry Pi, and STM.
Integration of sensors for real-time monitoring of environmental parameters.
Design of energy-efficient hardware solutions for prolonged operational life.
Comprehensive prototype development and rigorous testing for reliability.
Proven Track Record:
Over the years, I've completed 500+ projects, delivering tangible results across various industries, including healthcare, manufacturing, and logistics. My commitment to excellence ensures that each solution is tailored to meet specific client needs, driving innovation and efficiency.
Let's Collaborate:
Whether you're looking to develop a new IoT platform, enhance your mobile application's performance, or design a scalable web solution, I'm here to bring your vision to life. Let's discuss how I can contribute to your project's success.
Skills:
• Programming Languages: C, C++, Python, JavaScript
• Frameworks & Tools: Flutter, React, Node.js
• Cloud Platforms: AWS IoT
• Communication Protocols: UART, SPI, I2C, CAN, USB, Ethernet
• Version Control: Git
Internet of Things
Internet of Things Solutions Design
Prototyping
Firmware
Software Development
Windows App Development
ESP32
CloudApp
Desktop Application
Circuit Design
Cloud Development
Microcontroller Programming
Electronics
Flutter
Mobile App
RFID
AVR Microcontroller
Raspberry Pi
PCB Design
Hardware Design
Computer Engineering
Arduino
Embedded System
Raspberry Pi Firmware
GSM
Arslan L.
Islamabad, Pakistan
$15/hr
4.2
44 jobs
You have an IoT idea, a half-built prototype, or a device that needs to talk to a cloud backend and mobile app. That is exactly what I build end-to-end.
I am a Full-Stack IoT Engineer with 5+ years of experience delivering complete embedded systems products: ESP32 firmware, MQTT broker integration, AWS IoT Core cloud backend, Node.js REST APIs, Flutter mobile apps with BLE and OTA update support, and real-time dashboards for device monitoring and control.
Currently engineering IoT products for Bluell AB (Sweden). Top Rated on Upwork with 95% Job Success across 39 projects.
What I deliver on every project:
- ESP32 firmware: sensor integration, BLE communication, Wi-Fi, low-power optimization, OTA updates
- Backend: Node.js + Express REST API, MQTT broker, AWS IoT Core, PostgreSQL, MongoDB
- Mobile App: Flutter cross-platform app with real-time IoT controls, BLE device pairing, push notifications
- Dashboard: real-time data visualization, device monitoring, remote control
- Deployment: AWS EC2, VPS, cloud infrastructure setup
Industries I work in: Industrial IoT, Smart Home Automation, Healthcare IoT wearables, Connected Devices, Remote Monitoring Systems, SaaS IoT platforms.
If your IoT project needs firmware that runs reliably in the field, a backend that handles your data securely, and a mobile app your users can actually operate message me. I respond within 4 hours.
Internet of Things
ESP32
C++
Arduino
JavaScript
Embedded System
ESP8266
API
Industrial Internet of Things
MQTT
Node.js
AWS IoT Device Management
Firmware Programming
Flutter
Bluetooth LE
Python
Raspberry Pi
RESTful API
Amazon Web Services
Hamza R.
Islamabad, Pakistan
$20/hr
4.9
35 jobs
I’m Hamza a Biomedical Engineer with a passion for Embedded Systems, IoT, Electronics, and Robotics. I turn ideas into real, working prototypes and products. Whether it’s designing smart devices, building automation systems, or creating medical technology, I bring innovation to life.
What I Do Best:
Embedded Systems & IoT
Experience with ESP32, NRF52, ATMEL, STM32, PSOC, PIC
Work with Raspberry Pi, VisionFive (Linux Board), and Unihiker
Programming
Proficient in C/C++, Python, Java, MATLAB, JavaScript, and Flutter
Connectivity & Communication
Skilled in UART, I2C, SPI, MQTT, BLE, BLE Mesh, Sigfox, and Wi-Fi
Hardware Design & Prototyping
Specialize in PCB Design, 3D Modeling, and Product Prototyping
GUI Development
Develop Touchscreen Interfaces, E-Paper & TFT Displays, Web Dashboards, and Desktop
Applications
Work with LVGL, Tkinter, PyQt, and Kivy Framework
IoT & Cloud Integration
Experienced with AWS IoT, Firebase, ThingsBoard, and WebSocket-based real-time control
Industrial IoT (IIoT)
Expertise in CAN Communication, Factory Automation, and Smart Sensor Networks
Remote Monitoring & OTA Updates
Work with ESP-IDF OTA, BLE DFU, and Cloud-Based Device Management
I’ve built industrial prototypes, smart sensors, automation systems, and medical devices, real-time data processing and device connectivity. If you need a reliable, high-quality solution, let’s make it happen!
Let’s Collaborate!
Internet of Things
ESP32
Arduino
C++
MATLAB
PCB Design
Embedded C
STM32
nRF52
Python
FreeRTOS
Embedded System
Firmware Programming
Microcontroller Programming
Atmel AVR
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How to Hire Top IoT Specialists
How to hire an IoT specialist
If you’re creating a fully-fledged distributed IoT service, there are many angles to consider: development of the embedded device itself, the IT and networking services that power it, data and analytics, and design and development of an integrated UI (e.g., a mobile app to control your home’s thermostat).
To hire the right IoT specialist, you’ll need to
Choose your hardware platform (i.e., your processing board)
Develop the application software, including any back-end and networking support
Create the integrated UI
Develop the APIs, beacons, web sockets, and procedure calls that enable the high-level communications that occur between devices
Establish security, data storage, and analytics measures
To get started, you’ll need a platform for the product development team to develop and launch the product on, then consider both hardware and software systems. An IoT pro can help recommend the kind of power and operating system you’ll need on the hardware side that’s appropriate for your device or prototype.
IoT programming languages used to be unique to embedded systems, but now this software uses more common languages that web developers already know and use. IoT programming languages range from general-purpose languages like C++ and Java to embedded-specific choices like Google’s Go language or Parasail. Each offers a few advantages and disadvantages. Your developer will be able to advise you which is best.
>
Internet of Things FAQs
Frequently asked questions
What is IoT development?
Internet of Things (IoT) development projects are everywhere, and affordable, advanced technology is the driving force behind this fast-growing phenomenon. Smaller, more accessible hardware and the flexibility to use common programming languages make it easier than ever before to develop these embedded IoT systems. From hobbyists programming their own single-board computers to companies developing devices we can control from our mobile devices, the IoT is rapidly expanding.
Internet of Things (IoT) development projects are everywhere, and affordable, advanced technology is the driving force behind this fast-growing phenomenon. Smaller, more accessible hardware and the flexibility to use common programming languages make it easier than ever before to develop these embedded IoT systems. From hobbyists programming their own single-board computers to companies developing devices we can control from our mobile devices, the IoT is rapidly expanding.
Why hire IoT specialists?
Whether you’re creating a quick prototype or an entire IoT-powered business application, you’ll need an IoT developer to help with the data, hardware, and software considerations of your IoT initiative. From a development standpoint, creating IoT devices hinges on embedded programming. There are both software and hardware angles to consider when creating an IoT prototype—the small computer embedded in the object or device, and the software that makes it run. As mentioned above, this includes things like wearables, connected home devices, circuit design, GPS programming, 3D design, and more.
Fortunately, many of these software systems and software development kits (SDKs) now use programming languages and operating systems that engineers already use for mobile and web development, which opens the field up to many more developers.
Whether you’re creating a quick prototype or an entire IoT-powered business application, you’ll need an IoT developer to help with the data, hardware, and software considerations of your IoT initiative. From a development standpoint, creating IoT devices hinges on embedded programming. There are both software and hardware angles to consider when creating an IoT prototype—the small computer embedded in the object or device, and the software that makes it run. As mentioned above, this includes things like wearables, connected home devices, circuit design, GPS programming, 3D design, and more.
Fortunately, many of these software systems and software development kits (SDKs) now use programming languages and operating systems that engineers already use for mobile and web development, which opens the field up to many more developers.