Goran Trlin

Worked as a team member on two high-end technological projects at the University of Split. These were two high-tech projects involving WCF, DirectX, and advanced mathematical algorithms for 2D -> 3D reconstruction.

I've passed the 100 project mark for freelance work over the past eight years. Projects included anything from small VBA scripts to complete software solutions for large companies.

Implemented a mobile client application capable of biographical and biometric data enrollment, identification, and verification by fingerprint and/or facial image. Developed both mobile client side and server side.

Technologies: C#, ASP.NET, Java, AngularJS, Android, Mobile Computing, REST, SOAP, Serial Port Communication

Acted as project lead of a team which designed complete native Android software for sales representatives using Android (native Java) and PHP. The project is in the production phase, being used for four years without any significant downtimes or issues.

Architecture: REST, Cloud, PHP, MySQL

Designed and implemented a Windows-based C++ program that uses two channels of a PC sound card to acquire and process an input signal and display the appropriate waveforms on a screen in (pseudo) real-time. Advanced functionalities, such as triggers, filtering, and recording were also implemented.

Successfully implemented a complete data warehousing system for several retail companies in Bosnia and Herzegovina.

We won second place in the Croatian finals of the Microsoft Imagine Cup 2010. Our team presented an application for WP6, which was able to successfully help blind people to navigate the city's public transport using a voice interface.

Designed and implemented an online t-shirt design generator for runners. Fitness data is automatically gathered from third-party APIs (e.g., Strava API),. The user is given an opportunity to customize its t-shirt by choosing a unique design, comments, and additional data for it. The front end was done in React.

Worked on implementation, maintenance, and bug fixing of numerous different Magento extensions involving third-party APIs, custom business logic, shopping cart improvements, order management automatization, and more.

I'm the author of several C#/CPP/PHP utilities used in several large companies in Bosnia. Programs include features such as retail sales tracking, web shop inventory auto-update, stock serial numbers history and tracking, etc.

In my free time, I enjoy writing some simple and addictive 2D and 3D games. Some of my games are freely available on the web.

Technologies used: Unity 3D, Flash, and OpenGL/CPP.

Wrote a live Node.js-based back-end for accepting TK103 commands via TCP port, from T580W GPS tracker and similar devices. Once received through TCP port, the signal is processed, stored in a MongoDB cloud database, and served to all connected HTML5 clients using websockets. The solution is successfully tested and put in production.

Designed and developed a remote order entry system for a popular ERP suite. The ERP database is used as a primary ROE database, providing accurate and live information about stocks, prices, and reservations. The front end is implemented in React and the back end in Node.js.

The work was done on a front-end interface of a popular booking site. Performed code refactoring and improvements. Upgraded the suite from React 14 to React15.6 and replaced Biff/Flux with React-Redux. Built system optimization.

I have been involved into development of a few business web applications based on Laravel framework. All of these projects were business applications, dealing with data entry, dashboards, graphs, reports and related features. All of my Laravel projects used MySQL database as the data storage option. Some of the projects used cloud-hosted MySQL/Maria databases. Some of the projects were using Vue.js frontend, with Laravel being called via API, while others used standard Laravel views enhanced with jQuery/Bootstrap. Overall, I have experience with all the main components of the Laravel ecosystem—models, views, controllers, ORM, payment gateways, login/security systems, etc.

I developed JavaScript-based front ends communicating with a number of AWS-based microservices. Microservices were running on Lambda functions and utilized DynamoDB, SQS, and SNS. I was in charge of both front-end and back-end development.

This is my small programming blog, where I periodically publish source code, and articles focused on building some interesting algorithms from scratch.
Currently, the blog is focused on Python and covers:
• Machine learning algorithms—multilayer perceptrons, convolutional neural networks, etc.
• General algorithms—dynamic programming, stack-based algorithms, divide and conquer, etc.
• Computer graphics and computer vision.