Aleksandar Ilic

Finlab is an Android app for recording financial expenses. I implemented the back end in Ktor (Kotlin) with a PostgreSQL database which had to connect to multiple APIs to acquire all the necessary data for the receipts. I also implemented the Android app with custom QR Code scanner implementation using native ZBar and OpenCV libraries.

A Viber chatbot using the OpenAI GPT-3.0 and GPT-3.5 API to respond to chat messages. The back end was written in Ktor with PostgreSQL as the database. It was connected with the OpenAI API to generate message completions that were then replied to by users. The back-end architecture was built to support multiple chat vendors (such as WhatsApp, Slack, etc.).

I led the refactoring of the entire software architecture for both passenger and driver Android apps. I fixed major production bugs and designed better solutions for existing features. I also mentored the Android developers on best practices and libraries as part of my role in this project.

An Android app for Universal (Swedish telco operator) customers. Users can log in through BankID, keep track of used mobile data, and buy more if needed. The app provides a good overview of services, extra services, usage, invoices, time of the agreement, and more, as well as customer service and live chat, available every day of the week. Notifications are sent during operational disturbances, and an inbox organizes all communication regarding services with Universal in one place.

An Android app for all cyclists that plan to spend a few days on the wheel riding long distances along the Danube. Based on the data European Cyclist Federation collected during EuroVelo 6 route assessment, this app provides dozens of useful pieces of information.

An Android app for challenging your friends with crazy challenges.

An Android app for requesting dry cleaning services.

An Android app for drivers to receive pickup and delivery requests from the dry cleaning services company.

An Android app for requesting immediate rides and scheduling advanced rides in the future.

An Android app for DivvyRide drivers to receive ride requests from customers.

Software for creating standardized conservation and restoration documentation build for the Institute for Protection of Cultural Monuments of Serbia. It helps conservators and restaurateurs to highlight damage and previous restorations on a photo of mosaics or frescos while on the field. Every damage or restoration is created as a separated layer which can be overlapped with other layers when creating reports for further analysis. I worked with the domain experts on product development and afterwards implemented the Android application from start to finish.

An Android application to calculate how much in taxes and excises are you paying on every purchase. It was built for a non-governmental organization as part of a project for raising awareness about government spending. Registration was required using Facebook or Twitter.

Osmatrac is a collection of public MJPEG cameras with streaming capability in one application. Most of the available cameras are publicly available traffic cameras which led to the huge popularity of Osmatrac amongst drivers in Belgrade, Serbia. Originally built for Android and afterwards for Samsung Smart TV. I have developed apps for both platforms, including the back end, which was implemented in Google App Engine.

A sport portal for which I have developed an Android application that connects to a REST back end. Beside news, there are also live football scores with match details.

An Android application developed for a client with specific tracking requests. There was no UI and it was controlled by sending SMSes to a device where it was installed. The app supported several tracking modes which included features such as detecting device movements by using available sensors on the device, collecting the device's location from available sources, audio recording surroundings, and real-time uploading of all collected data to a server.

I won a Developer's Choice award at a local Android challenge for a TV Guide application. Users could track TV program schedules in Serbia, create a list of favorites, search content by name and genre, and set reminders for their favorite shows and movies. The app wound up being preinstalled in all Android devices sold by Vip TelCo operator.

I have won two awards from local mobile development challenges for TV Guide applications for the Samsung Bada platform (now discontinued). The application was a ported light version of my TV Guide for Android. It was developed in C++ and Bada IDE and supported only the basic functionality of the original Android version.

Together with my colleague, we described the process for Android OS development and explained in detail the phases of the Bring Up process by providing examples from the development of Phonebook and E-mail Sony Mobile applications at a Mobile Monday event.

I gave a lecture designed for engineers interested in Android development. The contents of the lecture included Android’s basic components and best practices with emphasis on the communication between those components.