Backend Systems Engineer - IoT/Smart City

· Job Description · Join the Software Engineering team on a physical Operations Technology (OT) integration project. · You will build and maintain the backend systems that connect OT field devices to the digital twin platform — handling real-time data ingestion, protocol translation, and system integration across industrial communication standards. Key Responsibilities · Develop and maintain backend services and middleware for OT/IoT data ingestion using OPC-UA, MODBUS, and MQTT protocols. · Build data pipeline components that normalise, process, and route telemetry from field devices to platform services and 3D visualisation layers. · Integrate AI coding tools (e.g. Claude, Copilot) into daily development workflows for code generation, unit testing, and validation — this is an expected practice, not optional. · Write and maintain automated test suites covering protocol adapters, data transformation logic, and integration endpoints. · Collaborate with frontend Unity engineers and systems architects to define and implement API contracts (REST/WebSocket). · Participate in code reviews, contribute to technical documentation, and support deployment through CI/CD pipelines. · Troubleshoot field connectivity and protocol issues; work with OT/hardware teams on device commissioning and debugging. Required qualification/skills:: · Hands-on experience with OPC-UA, MODBUS, and MQTT — protocol implementation, not just conceptual familiarity. · Proficiency in backend development (Python, Node.js, Go, or Java — at least one). · Active use of AI tools for coding, testing, and validation in prior roles or personal projects. · Experience writing integration and unit tests; familiarity with test automation frameworks. · Comfortable working with message brokers (MQTT brokers, Kafka, or similar) and time-series or event-driven data. Good to Have:: · Exposure to digital twin platforms or industrial IoT stacks. · Familiarity with OT security considerations (network segmentation, secur…