Marko Knežević

A fully dynamically generated web application for budget reporting of public government offices. It allows administrators to build up different UI of each budget version by providing the XML on the server-side as a template. After all the budget users would fill in their part of the budget for the following year, another XML template would export all data into a Word document. This enabled the Ministry of Finance to keep up with the ever-changing budget document requirements while still keeping the flexibility of adding new elements.

Created from ground up of single sign-on gateway server implemented on SAML 2.0 specification, which is used in all public government (and public-facing) services in Croatia. The system is designed to handle upwards of a million users with an emphasis on horizontal scalability. My role was to be a team lead and architect in this project, but I was also involved with finalizing the requirement specifications and security analysis requirements before the project was started.

Created a prototype hardware token that accepts Croatian identity cards and enables digital signature of documents using Android mobile phone. This was used to showcase what can be done with digital signatures in the future. The project used a Nordic semiconductor Bluetooth chip to enable BLE connection with a mobile phone, while the communication with encryption chip on the identity card was reverse engineered to just support use cases that were being presented.

As team lead and architect, led the development of the application for tracking employee satisfaction with an employer in the tourist industry. The web application works by assigning weekly user surveys and provides employer possibilities to easily investigate and pinpoint problems in different teams or positions. The system uses MongoDB as storage and JVM/Undertow embedded as back end, while the front end is done with a combination of React and MobX to provide an MVVM pattern for development.

Worked as a full-stack developer/architect on a big and long-running project used for overseeing drilling operations on drill rigs in oil fields. I was involved in a lot of development, including work on:
- Machine learning algorithms used to detect states
- Data import device which is deployed on rigs
- Front-end architecture of processing system used in house
- Front-end architecture of data tracking system used by clients
- Back-end architecture and a complete redesign of pipeline used for running processing jobs and overseeing their state
- Rest API security redesign
- Daily code reviews and housekeeping

Worked as a business analyst to prepare documentation and gather all requirements for developing a system that should be able to provide private users will easy ability to import cars and car parts from the EU into Switzerland. The main focus was the investigation of the current Switzerland customs dec API, which can be used for developing custom software.

Created a system that enables running custom data analysis/mining on data gathered from surveys. It integrates with different user survey system to extract the data, and then transforms and loads it into MongoDB for faster querying and optimization.

eCommerce calculator is a web application for evaluating the fees and costs associated with selling on the world’s most popular eCommerce marketplaces. This was created as one of a set of tools that is used for pushing the eCommerce in developing countries. It is built on React and utilizes the new Hooks API.