Monitoring dashboard project

Project Desciption

About the work

We build industrial IoT monitoring for hospitals and manufacturing plants (e.g., fridge/OT room temperature, differential air pressure, AC current, chiller trip sensors, water level). We need a hands-on engineer to help us ship an MVP and then iterate.

Scope (MVP)

1. Device/Edge data collection

   • Read from Modbus RTU/TCP (RS485) and/or vendor payloads (hex frames).

   • Optional: LoRaWAN via ChirpStack or gateway API.

   • Publish to cloud via MQTT/HTTPS with retry & basic buffering.

   • Pluggable parsing rules (e.g., bytes→registers→engineering units, alarms).

2. Cloud ingestion & storage

   • MQTT/REST ingest service (Node.js/TypeScript or Python/FastAPI).

   • Time-series DB (TimescaleDB/PostgreSQL or InfluxDB).

   • Multi-tenant data model: org → site → device → channels.

3. Web dashboard (operator use)

   • Auth (JWT), org/site scoping.

   • Live widgets: last value, status, 10–24h charts, min/max/avg.

   • Alerting: threshold rules, hysteresis, delay, notification via Email / WhatsApp / Telegram (any two to start).

   • Reports: daily summary (PDF/CSV export).

4. DevOps

   • Docker Compose for local/dev.

   • Basic deployment guide (Ubuntu VM).

   • README + short video walkthrough.

Nice-to-have (Phase 2)

• OTA updates for edge agent, role-based access, audit logs.

• Integrations: Grafana, Power BI export, webhooks.

• Mobile-friendly PWA, offline cache for last values.

Deliverables

• Private Git repo with source code and unit tests for parsers.

• Sample data simulators (Python scripts) for Modbus/hex frames.

• Configurable rules YAML/JSON for new devices without code changes.

• Deployment notes + infrastructure diagram.

• One knowledge-transfer session (recorded).

Tech preference (flexible if you propose alternatives)

• Edge: Python (pymodbus) or Node.js, systemd service, MQTT client.

• Backend: Node.js (NestJS/Express) or Python (FastAPI).

• DB: PostgreSQL/TimescaleDB or InfluxDB.

• Frontend: React/Next.js (charts with Recharts/Chart.js).

• Other: Docker, GitHub Actions (optional), Grafana (optional).

What we’ll provide

• Real device frames (e.g., Modbus registers, hex payloads).

• Example alert thresholds & UI mockups.

• Access to test VM for staging.

Must-have experience

• Built at least one IoT/industrial project: device → cloud → dashboard.

• Comfortable with Modbus RTU/TCP and binary payload parsing.

• Time-series schema design and charting.

• Clear English (Bahasa/Cantonese/Mandarin a plus), async communication, milestone reporting.

Timeline & budget

• MVP: 6–12 weeks, milestone-based.

• Please propose day rate or fixed per milestone in MYR with an estimated total.

How to apply

Email [your email] with subject “IoT Freelancer – [Your Name]” and include:

1. Short intro + location + availability (hours/week).

2. Links to GitHub/portfolio and 1–3 relevant IoT projects (what you built exactly).

3. Your proposed stack for this scope and a rough milestone plan.

4. Rate (MYR) and earliest start date.

5. Add the line “I can parse Modbus & hex frames.” to filter bots.