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Flatgigs

Scaling Investor-Backed Startups & Growth Companies

IoT Systems – Integration Engineer

Solutions EngineerSolutions EngineerFull TimeRemoteSeniorTeam 1-10Since 2023H1B No SponsorCompany SiteLinkedIn

Location

Pakistan

Posted

43 days ago

Salary

0

Seniority

Senior

Job Description

IoT Systems – Integration Engineer

Flatgigs

• 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 — not one-off scripts per device • 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 • Build device profile templates enabling configuration-based onboarding of certified device types — no customer-side code required • Implement data normalisation: raw hardware values (register counts, voltage, proprietary units) 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 local data buffering on edge: no data loss during cloud connectivity gaps — mandatory for industrial and logistics deployments • Develop edge aggregation logic: configurable statistical summaries to reduce uplink bandwidth where cloud cost or connectivity is constrained • Configure and validate edge runtimes: AWS Greengrass, Azure IoT Edge, or Node-RED on target OEM gateway hardware • 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 within 48 hours of receiving a new device • 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 — enabling customers to self-onboard without raising support tickets • Validate hardware compatibility for customer deployment environments before any commercial commitment is made • Maintain complete documentation for every integration: protocol specs, firmware versions tested, known limitations, configuration templates, troubleshooting steps

Job Requirements

  • 5–9 years of hands-on IoT systems integration, embedded systems, or industrial automation work — lab or field hardware experience is mandatory; purely software candidates will not be considered
  • Deep, practical Modbus TCP and RTU experience — you have implemented Modbus masters and slaves, mapped register addresses from datasheets, and debugged communication failures at the byte level ⚑ NON-NEGOTIABLE
  • Solid MQTT knowledge: broker configuration, topic design, QoS level selection, hardware MQTT client integration and troubleshooting ⚑ NON-NEGOTIABLE
  • Python for production-quality protocol adapter development — not scripting; you write maintainable, tested integration libraries
  • Industrial IoT gateway configuration and programming: Advantech, Moxa, Pepperl+Fuchs, or any 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 — this is a day-to-day requirement, not an occasional one ⚑ CRITICAL SKILL
  • Sensor domain experience across at least 3 of the following: 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 ⚑ REMOTE DISCIPLINE**
  • Nice to Have**
  • LoRaWAN end-device commissioning, gateway configuration, and network server setup (ChirpStack preferred)
  • Cellular IoT module integration: NB-IoT, LTE-M, or 4G — SIM7600, Quectel EC25, or equivalent
  • BACnet/IP or BACnet MS/TP for building automation and HVAC integration
  • Embedded C or C++ for device firmware or firmware interface library development
  • AWS Greengrass v2 or Azure IoT Edge module development
  • IEC 62443 industrial cybersecurity standard knowledge
  • Vertical experience in any of: cold chain, energy management, smart metering, predictive maintenance, fleet telematics**

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