$16,000.00 Fixed
We're seeking an experienced IoT Engineer to design and develop embedded systems for smart IoT devices with cloud connectivity, sensor integration, and real-time data processing capabilities.
Project Overview:
Develop an IoT ecosystem for smart home automation including sensor nodes, gateway devices, cloud backend integration, and mobile app connectivity. The system should support multiple sensors, actuators, and bi-directional communication.
Key Responsibilities:
Design and develop embedded firmware for IoT devices
Integrate multiple sensors and actuators (temperature, humidity, motion, etc.)
Implement communication protocols (MQTT, HTTP, WebSockets, CoAP)
Develop low-power and energy-efficient solutions
Create device-to-cloud data pipelines
Implement OTA (Over-The-Air) firmware updates
Design PCB layouts and hardware schematics (basic level)
Develop device provisioning and authentication systems
Build real-time monitoring dashboards
Implement edge computing and local data processing
Create REST APIs for device management
Ensure security and encrypted communication
Required Skills:
3+ years of embedded systems and IoT development experience
Strong proficiency in C/C++ programming for embedded systems
Experience with microcontrollers (ESP32, ESP8266, Arduino, STM32, Raspberry Pi)
Knowledge of communication protocols (MQTT, HTTP, I2C, SPI, UART)
IoT platform experience (AWS IoT, Azure IoT Hub, Google Cloud IoT)
Sensor integration expertise (analog/digital sensors)
Low-power design and battery optimization techniques
Understanding of wireless protocols (WiFi, Bluetooth/BLE, LoRa, Zigbee)
PCB design basics (optional but preferred)
Linux/RTOS experience for embedded systems
Technical Stack:
Microcontrollers: ESP32, ESP8266, Arduino, STM32, Raspberry Pi
Programming: C/C++, Python, MicroPython
Protocols: MQTT, HTTP/HTTPS, WebSocket, CoAP, Modbus
IoT Platforms: AWS IoT Core, Azure IoT Hub, Google Cloud IoT
Wireless: WiFi, Bluetooth Low Energy (BLE), LoRaWAN, Zigbee
RTOS: FreeRTOS, Zephyr OS
Tools: Arduino IDE, PlatformIO, ESP-IDF
Version Control: Git
Cloud Services: AWS Lambda, EC2, DynamoDB, S3
Hardware Components:
Environmental sensors (DHT22, BME280, DS18B20)
Motion sensors (PIR, ultrasonic, radar)
Light sensors (LDR, BH1750)
Gas and air quality sensors (MQ series, SGP30)
Actuators (relays, servos, motors)
Display modules (OLED, LCD, LED matrix)
Power management (solar panels, batteries, charging circuits)
IoT Features to Implement:
Multi-sensor data collection and aggregation
Real-time data transmission to cloud
Device authentication and secure communication (TLS/SSL)
MQTT pub/sub messaging architecture
Local data storage and buffering
Remote device configuration and control
OTA firmware update mechanism
Device health monitoring and diagnostics
Alarm and notification system
Data visualization dashboard
Energy-efficient sleep modes
Offline operation capability
Security Requirements:
Secure boot and encrypted firmware
TLS/SSL communication encryption
Device authentication (certificates, tokens)
Secure credential storage
Protection against common IoT vulnerabilities
Regular security updates capability
Power Optimization:
Deep sleep mode implementation
Wake-on-event triggers
Battery life optimization (target: 6+ months)
Solar charging integration
Power consumption monitoring
Cloud Integration:
AWS IoT Core or Azure IoT Hub setup
Device shadow/twin implementation
Time-series data storage (InfluxDB, TimescaleDB)
Real-time data processing (AWS Lambda, Azure Functions)
Historical data analytics
Alert and notification system (SNS, email, push)
Deliverables:
Complete embedded firmware source code
Hardware component list and wiring diagrams
PCB design files (if applicable)
Cloud infrastructure setup and configuration
MQTT broker setup and configuration
Device provisioning and management system
OTA update mechanism implementation
Real-time monitoring dashboard
Mobile app API documentation
Technical documentation and architecture diagrams
User manual and setup guide
Testing and validation report
Post-deployment support (2 weeks)
Budget: $45 - $90/hour (Hourly) or $8,000 - $16,000 (Fixed project)
Timeline: 8-12 weeks
- Proposal: 0
- Less than 3 month
