Broj

Initially, I defined the technical debt of the existing solution and subsequently developed a prototype of a brand new UI, which was approved by the decision makers and stakeholders.

In the subsequent phase, I embarked on rewriting the solution from scratch while reducing technical debt and aligning it with the new design. In the interim, I scaled up the development team. Following several months of development and testing, the solution was successfully launched into production. We continue to work on further development and maintenance of the application

Essentially, it is an internal full-stack app focusing on real-time data comparison. The backend leverages gRPC and RabbitMQ to consume real-time data, cache it, group it and transmit it to the frontend via WebSockets. The user interface displays real-time data, typically involving numerous WebSocket messages per second. Additionally, it provides users with the ability to filter, sort, and compare data across various data providers. The UI also features a historical module where users can view snapshots of past data. The solution is integrated with the company's Single Sign-On (SSO) functionality through Azure AD.

My team and I created the project from scratch. It is a platform serving to enable other systems and users to effectively manage configurations of thousands of data acquisition applications. The platform has multiple purposes, including decoupling domain data from the legacy database and storing it in a dedicated data source with appropriate ownership. The data is exposed through an API, with a user interface built around it and appropriate access control in place.

The platform comprises several components, including a Nest.js-based gRPC service, a Nest.js-based standalone application that operates as a Kubernetes cron job and synchronizes data between the legacy and new data sources, another cron job responsible for cleaning outdated data, a Nest.js-based Backend-for-Frontend, and a React-based SPA.

One of the most interesting aspects of the system is the fact that dozens of statuses per second are sent into the platform, which need to be stored and displayed on the UI in real-time.

Project has been started from scratch by me and architect. After creating PoC client was encouraged to scale DataArt team and continue investment. I took a part in hiring process and we ramped up the development team. I've been leading frontend part of the team acting as a regular BE developer at the same time. The project itself was a public ecommerce application that aimed to allow user to rent different vehicles, especially RVs in US. We needed to focus on coversion polishing performance and interface to attract users. We had different integrations with Stripe, Twilio, Algolia, insurance and data providers.

We developed a large-scale Single Page Application (SPA) comprising multiple modules, including operations, finance, and communication. The primary target audience for this system was employees of the global leader in maritime shipping services. Working alongside a team of many seniors, I gained invaluable experience in the development of large-scale products, which proved to be a remarkable experience for me.

We were building a Single Page Application (SPA) that functioned as an extensive form wizard, which our corporate clients were required to complete to establish an account.

Our team was developing a system designed to bring the bank in compliance with new regulations concerning the digitization of cheques.