Senior IoT Full Stack Engineer

Flatgigs

Key Responsibilities

• Architect from Scratch: Design and build a greenfield, microservices-based ecosystem using NestJS (Backend) and Next.js (Frontend) tailored for massive IoT data throughput.

• Direct Hardware Integration: Develop and implement direct communication layers for diverse IoT devices and sensors, ensuring stable data ingestion from telematics units and smart meters.

• IoT Protocol Mastery: Implement and optimize communication using MQTT, CoAP, WebSockets, gRPC, and HTTP/2 to ensure low-latency, bi-directional messaging.

• M2M & Connectivity Management: Orchestrate the M2M SIM lifecycle, integrating with Connectivity Management Platforms (CMPs) to monitor data usage, signal strength, and cellular connectivity states.

• Real-Time Logic & Analytics: Build complex backend logic for smart solutions, including geofencing, real-time alerting, predictive maintenance, and time-series data visualization.

• Data Strategy: Design high-performance database schemas in PostgreSQL (utilizing TimescaleDB for time-series data) to handle millions of incoming data points.

• Frontend Excellence: Create intuitive, real-time dashboards in Next.js that visualize live device states, historical trends, and complex sensor telemetry.

• End-to-End Security: Implement robust security for the IoT edge-to-cloud path, including X.509 certificate-based authentication and private APN/VPN configurations.

Technical Requirements & Skillsets

Backend & IoT Core

• Expertise: Advanced Node.js / NestJS (TypeScript) with a focus on event-driven architecture.

• IoT Standards: Deep experience with MQTT brokers (EMQX, HiveMQ, or Mosquitto) and binary data formats (Protocol Buffers, MessagePack).

• M2M Knowledge: Proven experience managing M2M/eUICC SIMs, APN configurations, and cellular network constraints (NB-IoT, LTE-M).

• Database: Mastery of PostgreSQL; experience with time-series optimization and caching layers (Redis).

Frontend & Real-Time

• Frameworks: Expert knowledge of Next.js (React) and state management (Zustand, Redux, or React Query).

• Visualization: Experience with real-time data streaming to the UI via WebSockets/SSE and data visualization libraries (D3.js, Highcharts, or Mapbox for telematics).

Infrastructure & DevOps

• Microservices: Solid experience with Docker, Kubernetes, and message brokers (Kafka or RabbitMQ).

• CI/CD: Designing automated pipelines for rapid, reliable deployments.

• Experience: 5+ years in Full Stack Development, with at least 3 years of hands-on experience in IoT/M2M product environments.

• Hardware Fluency: Ability to read hardware documentation and implement direct integrations via TCP/UDP or specialized protocols (Modbus, DLMS/COSEM).

• Real-Time Focus: A proven track record of building applications where latency and data integrity are mission-critical.

• Education: Bachelor s or Master s degree in Computer Science, Telecommunications, or Electrical Engineering.

Preferred Qualifications

• Experience with eSIM remote provisioning and global roaming orchestration.

• Knowledge of Edge Computing (processing data at the gateway level).

• Background in Telematics (OBD-II, CAN bus) or Smart Grid technologies.