DLMS Integration Engineer

Job Description

Job Description Key Skillssmart meters (DLMS/COSEM-based), cloud IoT platform (ZONOS), NB-IoT/GPRS TCP/IP channels, OBIS code mapping, HDLC/DLMS frame structure, Swagger/OpenAPI, RESTful integrations RoleDLMS Integration Engineer Industry TypeElectrical & Electronics Functional AreaEmbedded Systems / IoT Integration Employment TypeFull time Role CategoryEmbedded Software / IoT Protocol Integration / Communication Protocols EducationBachelors or master’s in Electrical or Electronics & Communication Engineering Experience3 years Job LocationBengaluru Responsibilities: Job Summary: We are looking for a DLMS Integration Engineer who will work on enabling communication between smart meters (DLMS/COSEM-based) and a cloud IoT platform (ZONOS). The role involves secure communication over NB-IoT/GPRS TCP/IP networks, handling DLMS frame construction, session management, and OBIS-based data parsing using Java or Kotlin. Key Responsibilities: Develop and manage secure DLMS/COSEM sessions over NB-IoT/GPRS TCP/IP channels Build and decode GET / SET / ACTION frames using OBIS codes (e.g., CF17, CF18, event logs, billing data, valve control) Interface with meters that establish TCP socket connections via NB-IoT modules Handle secure session establishment including LLS/HLS authentication, frame counter management, and Initialization Vector (IV) setup Parse and map OBIS responses into connector-friendly formats (JSON structures) Collaborate with API engineers to complete ZONOS platform integration Support connection-level diagnostics, logging, and error analysis for large-scale deployments Requirements: Required Skills: Solid understanding of DLMS/COSEM protocol and smart meter data communication principles Experience with NB-IoT/GPRS-based TCP/IP socket programming Hands-on programming experience in Java, Kotlin, or Python Working knowledge of OBIS code mapping, HDLC/DLMS frame structure, and encrypted communication Experience with Gurux DLMS library or any open-source DLMS toolset Familiarity with Linux environments for development and testing Good-to-Have: Experience integrating with IoT platforms or head-end systems Hands-on with DLMS frame analyzers, test harnesses, or meter simulators Understanding of NB-IoT communication stack, modem initialization, and connectivity diagnostics Familiarity with Swagger/OpenAPI specifications for RESTful integrations