Predrag Grkovic, Developer in Oroklini, Larnaca, Cyprus
Predrag is available for hire
Hire Predrag

Predrag Grkovic

Verified Expert  in Engineering

Mathematics Developer

Oroklini, Larnaca, Cyprus
Toptal Member Since
August 7, 2019

Predrag is a very experienced software developer/architect with over 20 years of experience in back-end projects, web applications, and mathematical modeling. He has a solid mathematical background, confirmed at many international mathematical/physics competitions. A member of MENSA, Predrag is a fast learner who adapts quickly to different working environments, responsibilities, and team structures.


Leegree Ltd.
Azure, Angular, Entity Framework Core, ASP.NET Core, Redis, API Development...
Songa Offshore
Azure, C#, .NET
IKOS CIF Limited
MATLAB, C#, .NET, Mathematics




Preferred Environment

Git, Visual Studio, Windows, JetBrains Rider, Azure, Blazor, Microsoft Excel

The most amazing...

...project I've developed is a physics engine based on real physics laws for a real-time car dynamics simulation.

Work Experience

Senior Sofware Architect and Development Team Lead

2016 - 2019
Leegree Ltd.
  • Created and deployed a fantasy game web app on Azure.
  • Created SQL database in Azure.
  • Provided live data presentation in the browser using SignalR.
  • Extracted a microservice from a monolithic application for better scaling.
  • Implemented various serverless Azure functions triggered by queues or event grids.
  • Participated in Angular front end for rich interface side game.
  • Lead a small team of five developers.
  • Followed Agile principles for full SDLC.
Technologies: Azure, Angular, Entity Framework Core, ASP.NET Core, Redis, API Development, LINQ, SignalR, Gaming, C++, Microservices

Senior Technicia IS Business Services

2014 - 2016
Songa Offshore
  • Generated an application for automatic creation of Excel documents for data analysis.
  • Created a GPS online tracking of rigs.
  • Integrated Google maps in web app for rigs tracking.
  • Developed a ramp up web application for management of offshore personnel.
Technologies: Azure, C#, .NET

Researcher in Computational Finance and Financial Software Engineer

2007 - 2013
IKOS CIF Limited
  • Worked on optimization of automatic trading models.
  • Implemented genetic algorithms for model parameters optimization.
  • Maintained and upgraded an automated trading execution application.
  • Implemented FIX messaging client.
  • Provided for utilization of Reuters trading info for automatic trading decisions.
Technologies: MATLAB, C#, .NET, Mathematics

Senior Software Developer

2007 - 2007
Covermore Australia
  • Implemented online quoting for travel insurance options.
  • Developed a wizard-like web interface.
Technologies: SQL, ASP.NET, C#

Senior Software Developer

2006 - 2007
DuPont Australia
  • Implemented different kinds of data migration.
  • Created a data presentation in Excel worksheet and charts.
  • Implemented data access through web app, Windows app, and web service.
  • Implemented a performance coating inventory.
  • Created an ordering application.
  • Created a reporting application.
Technologies: Web, Microsoft SQL Server, ASP.NET, C#, Visual Basic for Applications (VBA), Microsoft Access

Senior Programmer, Analyst

2004 - 2006
TSYS Card Tech
  • Created a dispute manager web application using Oracle workflow.
  • Worked on chargeback system.
  • Worked on credit card management system.
  • Developed an application setup diagnostics.
  • Implemented business solution by business workflow design.
  • Created a print manager application.
Technologies: Crystal Reports, BPMN, UML, NUnit, ASP.NET, Oracle, VB.NET, Visual Basic .NET (VB.NET)

Senior Software Engineer

2002 - 2004
Edams Technology
  • Maintained and improved water billing application.
  • Created a software installation project.
  • Developed theoretical pricing analysis mathematical model.
  • Created a Visual Source Safe automation tool for improved issue resolution flow.
  • Created a web based universal Oracle/SQL server querying tool.
Technologies: ADO.NET, C#, Programming, Microsoft SQL Server, Oracle, Microsoft, C++Builder

Car Dynamics Engine

Fully physics-based engine simulating car dynamics, which worked in real-time. It was also implemented as a plugin for 3D Studio Max for rendering the simulated kinematics. It was developed in C++ and Visual Studio. It uses exact physics law, friction forces, inertial systems, and more.

Multiple Pendulum Simulation

Pure physics engine simulating multiple pendulums (chains) in real-time. It was implemented by the real physics law, pure Newton's laws. The graphics was very basic. The interaction with the user was to define the starting position of the pendulum(s), and then the simulation would take over the processing of the dynamics and kinematics.
1999 - 2000

Bachelor's Degree in New Computing Technologies

School of Electrical and Computer Engineering of Applied Studies – University of Belgrade - Belgrade, Serbia


REST APIs, LINQ, Entity Framework, API Development, SignalR, DirectX, OpenGL


Visual Studio, Azure App Service, Microsoft Excel, Git, Microsoft Access, C++Builder, MATLAB, Crystal Reports, JetBrains Rider


ASP.NET Core, .NET, .NET Core, ASP.NET MVC, Entity Framework Core, NUnit, Angular, Knockout (Knockout.js), Razor, ASP.NET, ADO.NET, Bootstrap, Blazor


VB.NET, C#, SQL, Visual Prolog, Visual Basic .NET (VB.NET), C++, TypeScript, Python, Visual Basic for Applications (VBA), UML


Model View ViewModel (MVVM), REST, Microservices, Agile, Unit Testing, BPMN


Windows, Azure, Web, Microsoft, Android, Xamarin, Azure Event Hubs, Azure Functions, Oracle


Azure SQL, SQL Server 2017, Azure Blobs, Databases, Azure Queue Storage, Microsoft SQL Server, Redis, MySQL, PostgreSQL, MongoDB, Oracle 10g

Industry Expertise

Trading Systems


Back-end, Physics Simulations, Mathematical Modeling, Physics, Mathematics, Excel 365, Financial Software, Game Development, Gaming, Genetic Algorithms, Probability Theory, Embedded Software, DevExpress, Visual Studio Team Services (VSTS), Programming

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.


Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring