Hi, I’m Željko, a passionate .NET developer with extensive experience working across financial services, manufacturing execution, and transportation management systems. I specialize in building both web and desktop applications using technologies like .NET Core, Blazor, Angular, and DevExpress WinForms. I enjoy crafting scalable and efficient software solutions that solve real-world business challenges. Throughout my career, I’ve worked on a variety of projects, from developing IT solutions for the National Bank of Serbia to creating enterprise dispatch systems and quality control applications. I’m always eager to learn new skills and collaborate with teams to deliver impactful software that users love.

Željko Sokolović

Hi, I’m Željko, a passionate .NET developer with extensive experience working across financial services, manufacturing execution, and transportation management systems. I specialize in building both web and desktop applications using technologies like .NET Core, Blazor, Angular, and DevExpress WinForms. I enjoy crafting scalable and efficient software solutions that solve real-world business challenges. Throughout my career, I’ve worked on a variety of projects, from developing IT solutions for the National Bank of Serbia to creating enterprise dispatch systems and quality control applications. I’m always eager to learn new skills and collaborate with teams to deliver impactful software that users love.

Available to hire

Hi, I’m Željko, a passionate .NET developer with extensive experience working across financial services, manufacturing execution, and transportation management systems. I specialize in building both web and desktop applications using technologies like .NET Core, Blazor, Angular, and DevExpress WinForms. I enjoy crafting scalable and efficient software solutions that solve real-world business challenges.

Throughout my career, I’ve worked on a variety of projects, from developing IT solutions for the National Bank of Serbia to creating enterprise dispatch systems and quality control applications. I’m always eager to learn new skills and collaborate with teams to deliver impactful software that users love.

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Experience Level

Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
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Language

English
Intermediate
Serbian
Fluent

Work Experience

.NET C# Developer at Smart Investment Group doo, Belgrade
May 1, 2023 - Present
Developing the entire IT solution for the National Bank of Serbia's Central Register of e-bills of exchange. This involves banks adjusting their ICT systems for the introduction of electronic bills of exchange. Responsibilities include implementation of service layer, data access layer, Hangfire jobs, Redis caching, custom JWT authentication, exception middleware, unit and integration tests, UML sequence diagrams, bug fixing, and Blazor UI for CRUD operations.
.NET C# Developer at FedEx doo, Belgrade
March 1, 2024 - July 10, 2025
Designed and modeled SQL databases and developed enterprise software components for dispatch operations using DevExpress WinForms UI controls and Web UI Controls (ASP.NET Core). Worked with XPO ORM library, C#, and Entity Framework to deliver efficient and reliable solutions.
.NET C# MVC Developer at Zebracon doo, Belgrade
April 1, 2023 - July 10, 2025
Developed company website and codebook web application using .NET Core 3 MVC, implemented data reporting in C# and DevExpress Web Forms. Delivered admin web API service for ticket management and ticketing system web app. Built client web API service, sales order web app, and water-heater water-resistance and electro web app tests implemented on RF terminals.
Teacher of Programming Paradigms, Computers and Informatics at VI grammar high school
March 1, 2022 - July 10, 2025
Taught programming paradigms, computer science, and informatics to students at VI grammar high school.
.NET C# Developer at Guidance doo, Belgrade
May 1, 2020 - July 10, 2025
Developed web social-service applications in JavaScript, comparative mobile box packages view in Angular, game application (chess) using React. Migrated older ASP.NET E-commerce solution to newer version. Performed unit testing with Jest framework, participated in Agile project management using YouTrack and Azure DevOps.
MS Dynamics NAV Developer at Guidance doo, Belgrade
May 1, 2019 - July 10, 2025
Analyzed, designed, modified, migrated, and developed reports and objects in NAV2013 and migrated customizations from older NAV versions to NAV 2015. Created test data and test cases to ensure accuracy and functionality.
Teacher of basic programming in C#, computers, and informatics at Railroad-tech school
April 1, 2017 - July 10, 2025
Taught basic programming in C#, computers, and informatics to students.

Education

PhD student at Faculty of Organizational Sciences, Belgrade
October 1, 2014 - October 1, 2017
Master at Faculty of Organizational Sciences, Belgrade
October 1, 2011 - October 1, 2013
Bachelor at Faculty of Organizational Sciences, Belgrade
October 1, 2006 - November 1, 2010

Qualifications

Microsoft Exam 70-480: Programming in HTML5 with JavaScript and CSS3
October 1, 2018 - December 31, 2018

Industry Experience

Financial Services, Manufacturing, Transportation & Logistics, Education, Software & Internet

Experience Level

Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
See more