Ondrej Rohon

Deepnote is more than collaborative data science notebook for teams. Write Python, R, SQL. Create no code visualisations. Turn insights into dashboards.

The best achievement I accomplished was a complete refactor of file explorer in our notebook. It was the major source of performance issues. This rewrite resulted in a much smoother code-writing experience and collaboration. Part of it was implementing an end-to-end performance monitoring system using Cypress. This helped us catch many performance regressions and keep our customers happy.

Another challenge was improving our code base and taking it from an early-stage startup environment to a Series A scale of team. Many developer experience issues with our tooling were fixed and we successfully transitioned big parts of our product from Redux to GraphQL. This significantly improved the speed at which we could deliver new features.