Teuca Sergiu Ionut, Developer in Cluj-Napoca, Cluj County, Romania
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Teuca Sergiu Ionut

Verified Expert  in Engineering

Software Developer

Cluj-Napoca, Cluj County, Romania

Toptal member since November 6, 2017

Bio

Teuca is a full-stack .NET developer with 10 years of experience. He has worked on various projects for notable clients such as Facebook. Teuca is equally comfortable working on both the back and the front end, using technologies like ASP.NET, WCF, WPF, UWP, and Angular/React. He likes to write clean code and design well-thought-out products.

Portfolio

CDN Publishing, LLC
ASP.NET MVC, C#, HTML, CSS, JavaScript, .NET, MVC Design, Angular, Windows...
Tecknoworks
Microsoft Azure, Entity Framework Core, Angular, .NET, C#, Blazor, C#.NET...
T101 Limited
.NET, C#, .NET Core, Angular, Google Cloud Platform (GCP)...

Experience

  • C# - 10 years
  • Bootstrap - 10 years
  • .NET Core - 10 years
  • JavaScript - 10 years
  • Azure - 5 years
  • SQL - 5 years
  • Angular - 3 years
  • React - 2 years

Availability

Full-time

Preferred Environment

Linux, TFS, Subversion (SVN), GitHub, Visual Studio Code (VS Code), .NET 8, C#, Full-stack, Web Development, REST APIs, Entity Framework

The most amazing...

...project I've worked on was a mobile application for a pretty big football team.

Work Experience

Front-end oriented Full-stack developer (.NET MVC)

2023 - 2025
CDN Publishing, LLC
  • Designed, developed, and maintained web pages to enhance user experience and functionality.
  • Created new pages, optimizing and maintaining existing ones and ensuring seamless integration with the platform’s back end.
  • Worked extensively with the API, implementing new endpoints and improving performance.
  • Managed and optimized the SQL Server database, ensuring data integrity and efficiency.
  • Improved the platform’s responsiveness, scalability, and overall user engagement.
Technologies: ASP.NET MVC, C#, HTML, CSS, JavaScript, .NET, MVC Design, Angular, Windows, Microsoft SQL Server, GitHub, Bootstrap, Full-stack, Web Development, REST APIs, jQuery, Entity Framework

Full-stack Software Developer

2016 - 2023
Tecknoworks
  • Created both the front and back end of numerous web applications.
  • Designed the architecture of various projects, ensuring their scalability and maintainability.
  • Built products from scratch, from ideation to implementation, and showed a proven track record of delivering high-quality solutions.
  • Designed and implemented APIs for various applications.
  • Deployed and maintained applications in the cloud, specifically on the Azure and AWS platforms.
Technologies: Microsoft Azure, Entity Framework Core, Angular, .NET, C#, Blazor, C#.NET, ASP.NET Core, RabbitMQ, Desktop, Desktop App Development, .NET 8, MQTT, Lambda Functions, Azure, Agile Software Development, Windows, Microsoft SQL Server, GitHub, .NET Core, JavaScript, Bootstrap, React, Azure Cosmos DB, Full-stack, TypeScript, Redux, Web Development, REST APIs, jQuery, Entity Framework, AutoMapper

Senior Back-end Developer

2022 - 2022
T101 Limited
  • My role involved building and refining back-end microservices, optimizing APIs, and improving database performance.
  • Worked on the re-architecture and redesign of the company’s flagship product, helping transition to a microservices-based back end using .NET Core and containers.
  • Contributed to coding standards, debugging, and CI/CD processes to ensure smooth development and deployment.
Technologies: .NET, C#, .NET Core, Angular, Google Cloud Platform (GCP), Amazon Web Services (AWS), Windows, Microsoft SQL Server, GitHub, Agile Software Development, Azure, REST APIs, Entity Framework

Front-end Developer

2021 - 2022
Klang Games GmbH
  • Brought the next generation of the company’s product to life by implementing front-end components in Blazor.
  • Used HTML, CSS, and JavaScript to translate existing designs into responsive, reusable UI components, ensuring seamless integration with the .NET Core back end.
  • Optimized front-end performance and maintained clean, maintainable code for a smooth user experience.
Technologies: HTML, CSS, Blazor, JavaScript, C#, .NET Core, Windows, GitHub, Bootstrap, Web Development, jQuery

Software Developer

2015 - 2016
Schuller Eh Klar
  • Showed my expertise in ERP software development, as well as database development and maintenance, with expertise in .NET and MS SQL.
  • Handled mobile application development on the .NET and Android platforms.
  • Emphasized teamwork and engaged in every phase of project development to drive success.
Technologies: Microsoft SQL Server, Android, Windows Communication Foundation (WCF), .NET, C#, Windows, Full-stack, REST APIs, C#.NET WinForms, Entity Framework

Experience

Ad Budget Tracking and Optimization Platform

I was the main developer on the team that created an awesome product for ad optimization on Facebook.

Royal Antwerp FC Mobile Application

I created a mobile application (Ionic 3) which is intended to be used by football fans. They can use the app to watch the news and matches of their favorite team and also to support their team by buying the team merchandise.

Schuller Eh Klar ERP Application

For this application, I implemented different features for the accountancy, billing, and inventory system. I also managed and bug-fixed the servers and also provided customer service to the clients who used the application.
Technologies: C#, WCF, Entity Framework 6, Win Forms, Microsoft SQL Server, Android, Windows Mobile

Cafe/Restaurant Point-of-Sale System

This point-of-sale system manages products, orders, stock, and inventory; it also generates sales reports. I created both the back-end and the front-end. I also developed a QR code for customers so that they could order from the table.

College Document Management System

https://github.com/KangJiYoung/ProiectColectiv
This was a large project for a college. I built a document management system which was used to store, filter, and create complex documents in order to facilitate different applications.

Education

2017 - 2019

Master's Degree in Computer Science (Software Engineering)

Babeş-Bolyai University | Faculty of Mathematics and Computer Science - Cluj-Napoca, Romania

2014 - 2017

Bachelor's Degree in Computer Science

Babeş-Bolyai University | Faculty of Mathematics and Computer Science - Cluj-Napoca, Romania

2010 - 2014

Technical High School Diploma in Mathematics and Informatics

National Decebal College - Deva, Romania

Skills

Libraries/APIs

jQuery, REST APIs, Entity Framework, React, Facebook API, Node.js, AutoMapper

Tools

GitHub, Git, C#.NET WinForms, Subversion (SVN), TFS, RabbitMQ, MQTT

Languages

HTML, SQL, ASP.NET Razor, C#, TypeScript, C#.NET, CSS, JavaScript, Python, Java

Frameworks

.NET, ASP.NET MVC, ASP.NET, Entity Framework Core, .NET Core, Angular, ASP.NET Core, .NET 8, Windows Presentation Foundation (WPF), MVC Razor, Bootstrap, Bootstrap 3, Blazor, Redux

Paradigms

Agile Software Development, Desktop App Development, Database Design, Design Patterns, Waterfall Development, Test-driven Development (TDD), REST, MVC Design

Platforms

Microsoft, Windows, Desktop, Universal Windows Platform (UWP), Azure, Android, Linux, NopCommerce, Visual Studio Code (VS Code), Twilio, Amazon Web Services (AWS), Google Cloud Platform (GCP)

Storage

Microsoft SQL Server, MongoDB, SQLite, MySQL, NoSQL, Redis, Azure Cosmos DB

Other

Full-stack, APIs, Web Development, Algorithms, Front-end Development, Software Development Lifecycle (SDLC), Enterprise Architecture, Enterprise Resource Planning (ERP), eCommerce, Windows Communication Foundation (WCF), Microsoft Azure, Content Management Systems (CMS), Lambda Functions

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