Gayashan Amarasinghe

I have recently joined Gridscout as a Founding Data Engineer. I am building out and hardening the data backend that powers its network intelligence platform for the National Electricity Market, shaping how market and network data is ingested, modelled, and served as the product grows. Data engineering is the core of what I do: turning raw, messy data into reliable, well-modelled datasets that a product can be built on.

Before Gridscout I spent more than three years at an Australian gentailer, an energy retailer and generator, where I grew from Data Engineer to Data Technical Lead. I built and ran the enterprise data platform on Databricks and Delta Lake, led a small team, set the pipeline design and data modelling patterns we built against, and handled the migration off SQL Server. I was the in-house subject matter expert for AEMO market data (MMS), MSATS, and PDR, covering everything from ingestion of raw market data through to the reporting and forecasting that trading, finance, and executive stakeholders depended on.

I came to this from a PhD in distributed systems at The University of Melbourne, and before that more than half a decade lecturing at the University of Moratuwa in Sri Lanka. I started out as a Java engineer at WSO2 working on the Carbon Kernel. The teaching years left me comfortable explaining complex, regulated data to technical teams and senior decision makers alike.

I have a personal interest in how data adds commercial value. NEM Constraints, a personal project working with AEMO market data, is where I explored that.

Skills:

• Energy market domain: AEMO NEM market data (MMS), MSATS, PDR, NEM constraints
• Languages and data: Python, SQL, PySpark, Java, C++, Bash, Apache Spark, pandas, NoSQL
• Platforms and tooling: Databricks, Delta Lake, Azure Data Factory, Databricks Workflows
• Automation and AI: ELT/ETL pipeline automation, AI-assisted development (Claude Code, Databricks Genie)
• Ways of working: Data migration and integration, microservices, RESTful APIs, Agile/Scrum, TDD

Away from the keyboard I ride bikes (road, gravel, and cross country) and read science fiction and biographies. I also help my wife with her gardening passion, mostly by automating things and fixing whatever breaks.