IoT Systems & Integration Engineer
Pakistan. India. EgyptFull-TimeMiddle
Salary not disclosed
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Job Details
- Experience
- 5–9 years
- Required Skills
- PythonC++
Requirements
- 5–9 years of hands-on IoT systems integration, embedded systems, or industrial automation work
- Lab or field hardware experience (purely software candidates not considered)
- Deep, practical Modbus TCP and RTU experience
- Solid MQTT knowledge: broker configuration, topic design, QoS level selection, hardware MQTT client integration and troubleshooting
- Python for production-quality protocol adapter development
- Industrial IoT gateway configuration and programming: Advantech, Moxa, Pepperl+Fuchs, or equivalent embedded Linux gateway platform
- OPC-UA hands-on experience: browsing server address spaces, reading node values, implementing client subscriptions
- Ability to read hardware datasheets, electrical schematics, and communication protocol specifications independently
- Sensor domain experience across at least 3 of: temperature/humidity, power/energy monitoring, GPS/asset tracking, pressure/flow, vibration/accelerometer, air quality
- Remote work discipline: rigorous documentation habits, async-first communication, and ability to coordinate physical hardware testing across distributed locations
- Protocols: MQTT v3.1 / v5.0 (expert) Modbus TCP + RTU (expert) OPC-UA (proficient)
- Hardware: Industrial gateway configuration (Advantech, Moxa) Raspberry Pi / embedded Linux ESP32 / Arduino class devices RS485 / RS232 serial interfaces GPIO, I2C, SPI interfaces
- Software: Python (production library quality) C / C++ (embedded interface level) Node-RED (flow-based edge logic) AWS Greengrass / Azure IoT Edge Wireshark (protocol debugging) Modbus Poll / UaExpert (test tools)
Responsibilities
- Build and maintain the device integration layer: Python and C-based protocol adapters, drivers, and translation modules for sensors, PLCs, energy meters, gateways, and OEM hardware
- Implement production-quality integration adapters for: MQTT v3.1/v5.0, Modbus TCP, Modbus RTU, OPC-UA, BACnet/IP, SNMP, CoAP, HTTP REST, and proprietary OEM APIs
- Write reusable protocol libraries that abstract hardware communication behind a unified Device Interface
- Build and maintain the Device Compatibility Matrix: all tested hardware logged with protocol version, firmware, known issues, config templates, and onboarding effort estimate
- Conduct hardware-in-the-loop testing for every new device: validate telemetry accuracy, command round-trip time, error handling, and reconnection behaviour under interrupted connectivity
- Implement data normalisation: raw hardware values converted to standardised engineering-unit JSON telemetry
- Build edge gateway software running on embedded Linux gateways and Raspberry Pi-class devices for local protocol translation, data buffering, and pre-processing
- Implement secure edge-to-cloud communication: mTLS with X.509 certificates, certificate rotation, and revocation handling
- Build OTA update clients on edge devices: receive, validate, stage, and apply firmware updates from the platform OTA service
- Evaluate new hardware from the supplier ecosystem: produce integration feasibility reports and effort estimates
- Work with OEM technical teams to obtain datasheets, SDK documentation, communication specs, and evaluation units
- Write SDK and integration guides for each certified hardware family
- Maintain complete documentation for every integration
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