Senior Software Developer

As a Senior IoT Platform Architect / Backend Engineer, your role will involve designing and scaling a real-time IoT telemetry and control platform for millions of connected solar inverters and edge devices. Your primary responsibility will be to architect and optimize a high-throughput, secure, and resilient data pipeline from MQTT ingestion to time-series storage and analytics. Key Responsibilities: - Design and implement MQTT Broker (EMQX/VerneMQ) clusters for device connectivity and secure telemetry ingestion. - Develop a Kafka-based streaming pipeline for durable, partitioned message processing at a scale of 100k-200k messages per second. - Create Python (FastAPI/Django) consumers for validation, enrichment, and storage into TimescaleDB (Postgres) with Redis for low-latency caching. - Establish Django REST Framework APIs and WebSocket gateways for real-time dashboards and control command flows. - Deploy and manage the system using Kubernetes with auto-scaling, Helm, and an observability stack (Prometheus, Grafana, ELK/Opensearch). - Implement a security-first design using mTLS, OAuth2/OIDC (Keycloak), and Cloud KMS/HSM for managing secrets. Qualifications Required: - Experience in capacity planning, data modeling, and performance optimization. - Proficiency in handling large-scale messaging systems, distributed databases, and time-series optimization. - Prior experience with MQTT Brokers, Kafka-based streaming pipelines, Python (FastAPI/Django), TimescaleDB, Redis, Django REST Framework, WebSockets, Kubernetes, Helm, and observability tools like Prometheus, Grafana, ELK/Opensearch. - Strong understanding of security protocols such as mTLS, OAuth2/OIDC, and Cloud KMS/HSM for secure data management. (Note: No additional details about the company were provided in the job description.),