CleanTech startups, EV charging network operators (CPOs), and renewable energy platforms frequently search to hire a freelance CleanTech, EV charging (OCPP 1.6J / 2.0.1), solar & smart grid IoT programmer. I am Aldian Fazrihady, a Senior Freelance Full Stack Developer and IoT Systems Architect available via Upwork.

Core EV Charging (OCPP), Solar & Smart Grid Capabilities

  • OCPP 1.6J & 2.0.1 Central System (CSMS) Engineering: Building high-concurrency WebSocket CSMS backends in Go and Python that manage thousands of EV chargers, remote start/stop transactions, smart load balancing, and OCPI roaming billing.
  • Solar Inverter, BESS & Smart Meter Telemetry: Ingesting Modbus/MQTT/SunSpec time-series telemetry into TimescaleDB / InfluxDB with real-time React fleet dashboards.
  • AI Energy Load Forecasting & Tariff Arbitrage: Optimizing battery storage dispatch against dynamic wholesale electricity spot prices.

Frequently Asked Questions

How do you handle unreliable cellular connections from remote EV chargers or solar sites?

I implement stateful OCPP heartbeat/reconnection state machines, offline transaction message queuing, and idempotent meter-value reconciliation so billing records are never lost during cellular dropouts.

How can we hire you as a freelance CleanTech & OCPP programmer?

Message me on Upwork.

About the Author — Hire Freelance Programmer Aldian Fazrihady

Aldian Fazrihady is a Top-Rated Senior Freelance Programmer, Freelance Full Stack Developer, and AI Application Engineer with 15+ years of production software engineering experience and Google Cloud Professional Cloud Architect & Data Engineer certifications. He specializes in building custom LLM & autonomous AI agents, RAG pipelines, Next.js/React PWAs, Python (Django/FastAPI), Go microservices, and serverless cloud infrastructure on Google Cloud Run and AWS.

Hire Aldian Fazrihady on Upwork | View Live AI Portfolio | Portfolio Directory | Send a Direct Message

Freelance Programmer Specializations & Category Hubs