Dusan Velickovic, Developer in Niš, Serbia
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Dusan Velickovic

Verified Expert  in Engineering

Software Developer

Niš, Serbia

Toptal member since May 13, 2021

Expertise
Full-stackAngularJavaScriptTypeScriptReact.jsGitNode.jsC#Express.jsReduxCSSDockerJSONPostgreSQL
Bio

Dusan is a passionate software engineer with more than eight years of experience, focusing on .NET Core and Angular. He designed the architecture of an enterprise system, a flight search and booking tool, and a large-scale .NET application used as a complete software solution for cloud and web hosting companies. Dusan enjoys working with different kinds of databases and writing optimized and scalable code.

Portfolio

Atomia
.NET, JavaScript, HTML, JSON, PostgreSQL, SQL, CSS, YouTrack, C#, ASP.NET...
Softelm
Angular, Node.js, HTML, CSS, .NET, JavaScript, Redis, MongoDB, NestJS, ASP.NET...

Experience

  • Entity Framework Core - 7 years
  • .NET Core - 7 years
  • Git - 7 years
  • Angular - 7 years
  • .NET - 7 years
  • JavaScript - 7 years
  • React - 7 years
  • Redux - 6 years

Availability

Full-time

Preferred Environment

Docker, MacOS, JetBrains Rider, JetBrains

The most amazing...

...project I've built is a cloud hosting platform used worldwide by large companies.

Work Experience

Senior Full-stack Developer

2018 - 2021
Atomia
  • Developed and maintained a large-scale .NET application used as a complete software solution for cloud and web hosting services.
  • Built new features and resolved bugs reported by the QA team.
  • Guided colleagues in different programming paradigms and practices.
Technologies: .NET, JavaScript, HTML, JSON, PostgreSQL, SQL, CSS, YouTrack, C#, ASP.NET, Entity Framework, Express.js, Full-stack Development

Full-stack Developer

2016 - 2018
Softelm
  • Designed the architecture of an enterprise system.
  • Developed Ionic with Angular hybrid mobile applications. Published to stores for iOS and Android.
  • Implemented payment integrations such as Stripe and Braintree.
  • Created a public API for third-party clients with OAuth2.
Technologies: Angular, Node.js, HTML, CSS, .NET, JavaScript, Redis, MongoDB, NestJS, ASP.NET, Entity Framework, React, Express.js, Full-stack Development

Experience

Atomia

https://www.atomia.com/
Atomia is a cloud management system that provides automated billing and service delivery for web hosting and cloud companies. I was responsible for the integration of multiple third-party services, and customizing the Atomia platform for specific client requirements.

Hii Chat

Hii is an application to easily meet people around you in the same cafe, pub, hotel, etc. It's a great blend between a location and a meeting app. I was responsible for the complete application development and the architecture design.

Staff Sales

Staff Sales is a web application for selling items inside a company to its employees. I was responsible for creating a RESTful API, database design, application architecture, and the front-end portion based on the PSD. For the best performance, I picked NestJS because of the architecture similarity with Angular and the application requirements. The front end is built on top of the Angular Material components with Component Dev Kit (CDK).

Cosmos Flight Booking (CFB)

This is a flight search and booking tool with a complete override Microsoft Identity system. It's written in .NET Core as the back-end framework, with the front end written in Angular. Azure Cosmos DB is used as a persistence storage. The architecture is an Onion with CQRS.

Education

2013 - 2020

Bachelor's Degree in Computer Science

Faculty of Electronic Engineering - University of Nis - Nis, Serbia

Skills

Libraries/APIs

React, Node.js, Entity Framework, LINQ, Socket.IO, RxJS, REST APIs

Tools

Git, YouTrack, Visual Studio 2019, GitHub, JetBrains Rider, JetBrains

Languages

JavaScript, HTML, TypeScript, C#, CSS, SQL, C#.NET, PHP, SCSS

Frameworks

.NET, .NET Core, Angular, Entity Framework Core, ASP.NET, ASP.NET Core, Express.js, Redux, Razor, Laravel, Ionic, NestJS

Storage

Microsoft SQL Server, JSON, PostgreSQL, Redis, MongoDB, MySQL, Azure Cosmos DB

Platforms

Docker, Visual Studio Code (VS Code), Windows, MacOS

Paradigms

CQRS, Microservices

Other

Full-stack Development, Architecture, WCF Web Services, Identity

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