Tomas Livora

As a CTO, I was responsible for the development of this visual project and team management tool.

I led a team of up to five developers, designed the architecture of the system, and implemented a large part of it.

The back end was based on Java EE, ran in a WildFly application server, and used MongoDB as the primary data storage. The front end was based on Angular; it was made fully reactive using NgRx state management library and used many other libraries (such as Mapbox GL, Plotly, Frappe Gantt, etc.) to display various visual representations of data. The application ran on multiple nodes in DigitalOcean cloud and used Auth0 for user authentication.

The design decisions I made early on enabled us, for example, to easily implement real-time user collaboration using Pusher in later stages.

I gradually became the main front-end developer handling this map social network with over 50,000 monthly active users. The application was based on the latest Angular and used Leaflet to render a map. I introduced a new Redux-like architecture (based on NgRx), contributing to a smooth UX and a more stable application.

I contributed to this microservice platform while working on my master's thesis. I integrated various fault-tolerance mechanisms (based on Hystrix), which can be easily configured by Java annotations. I also had to make significant changes in the SilverWare core to enable this.

A desktop application for pawnshops that keeps track of inventory, calculates interest, prints reports, etc. This project has been my side business since I was 15 and it is still being used by many pawnshops in Slovakia. I first developed it in Delphi, but it was later re-built from scratch as an Electron app.

Observatory is a tool that observes various proof-of-stake blockchains, measures their level of decentralization, scores individual validators, presents this information to the public in a nice web UI, and serves this data to other apps that help improve the health of these blockchains.

I built a data syncing pipeline from scratch, which is the core component that enabled this project to be started. I also helped build Cosmos sensor, a custom Tendermint/CometBFT node that monitors validators on Cosmos chains and collects even more data for the Observatory.

A next-generation of Snappy Kraken's flagship product that helps financial advisors with their marketing efforts. I led the development of a brand new, re-designed version of the product, co-operated with a really experienced UI/UX designer, and I built the initial version of the app alone from scratch. Later, I helped onboard new developers to follow best practices and resolve issues.