Timo Wevelsiep

I design, build, and operate production-ready IoT/IIoT platforms — from sensors, gateways, and PLCs to cloud dashboards, remote access, and managed operations.

Many IoT projects end as prototypes: a dashboard runs, but the system doesn't hold up in continuous operation — with distributed locations, real plants, customer access, security, and long-term operation. While generic web/app development is increasingly automated, IoT/IIoT remains true engineering: physical hardware, protocol level, industrial systems, and operational responsibility. This is exactly where I work — end-to-end, from the plant to the dashboard.

Focus areas:

- IoT & IIoT Platforms: LoRaWAN, ChirpStack, ThingsBoard, MQTT, Node-RED, Grafana — Device/Gateway Management, Rule Chains, Payload Decoders, operator-ready dashboards

- HMI, Remote Access & Industrial: Browser/VNC access to HMI/PLC-related systems, distributed locations, role-based customer access, audit logs, WireGuard/NetBird, Modbus/OPC UA connectivity

- Hardware Integration: Milesight, Dragino, Kerlink, RAK, Tektelic, Elsys, Adeunis (Gateways, Sensors, Controllers)

- Edge & Connectivity: Gateway/Device Management, Edge Deployment, NFC/BLE Provisioning, React Native Field Apps

- Full-Stack: React, Next.js, TypeScript, Node.js, Python, PostgreSQL/TimescaleDB/InfluxDB, REST/MQTT APIs

- Operations: Docker, Proxmox, CI/CD, Monitoring (Grafana, Prometheus, Loki), Backups, Managed Operations with SLA

With merkaio, I develop and operate production-ready IoT infrastructure and IoT platforms. As CEO of WZ-IT, I also bring deep cloud, infrastructure, and operational expertise — robust architectures, Proxmox/Hetzner, monitoring, and managed operations.

My goal: IoT systems that not only display data but make real infrastructure accessible, controllable, and operable — and run reliably after launch.