Full Stack Developer: Angular/.NET/C# (Information Technology/Software)

Black Pen Recruitment; Wien; On-site; EUR 70,000 - 110,000; Full time

Job summary

Our client currently has a vacancy for a Full Stack Developer fluent in English, to offer his/her services as an expert who will be based in Vienna, Austria. The work will be carried out either in the company’s premises or on site at customer premises.

In the context of the first assignment, the successful candidate will be integrated in the Development team of the company that will closely cooperate with a major client’s IT team on site. Job type: Full time/Permanent.

Qualifications

• University degree in IT or relevant discipline with at least 6 years IT experience.
• At least 3 years of Angular with TypeScript, HTML, CSS3 and server-side frameworks.
• 3+ years building WebAPI backends with .NET/.NET Core and C#.
• Experience with SQL Server 2019+ and ORM frameworks.
• Experience in Agile teams using Azure DevOps.
• Excellent command of the English language.

Responsibilities

• Develop and maintain full-stack web applications.
• Build responsive interfaces using Angular, TypeScript, HTML and CSS.
• Develop backend services and Web APIs using C#/.NET or Python frameworks.
• Design databases with SQL Server and ORM integration.
• Integrate APIs and external data services; fix issues and optimize.
• Collaborate with Agile teams using Azure DevOps.

Skills

Angular

TypeScript

HTML

CSS3

ASP.NET Core

ASP.NET MVC5

Django

Flask

FastAPI

C#

SQL Server

ORM

Azure DevOps

Trino

Docker

RabbitMQ

Event Sourcing

English

Education

University degree in IT

Tools

Azure DevOps

Job description

Our client, a leading Software, Information and Communication Technologies company, operates internationally (Athens, Brussels, Luxembourg, Copenhagen, Stockholm, London, Nicosia, Hong-Kong, Valetta, etc). Our client is a renowned supplier of IT services to government institutions, multinational corporations, public administrations and multinational companies, research and academic institutes.

Role Overview

Our client currently has a vacancy for a Full Stack Developer fluent in English, to offer his/her services as an expert who will be based in Vienna, Austria. The work will be carried out either in the company’s premises or on site at customer premises. In the context of the first assignment, the successful candidate will be integrated in the Development team of the company that will closely cooperate with a major client’s IT team on site.

Job type: Full time/Permanent

Location: Vienna, Austria

Workplace: Onsite

Deadline for submission: 10/10/2026

Please note that we can consider only EU candidates for this position due to security clearance.

Requirements

• University degree in IT or relevant discipline, combined with minimum 6 years of relevant working experience in IT;
• At least 3 years of experience in building web-based user interfaces using Angular with proficiency in TypeScript, HTML, CSS3, ASP.NET Core, ASP.NET MVC5 and/or Django, Flask, FastAPI with Python;
• At least 3 years of experience in developing WebAPI backends with .Net/.Net Core framework and C#;
• Experience in SQL Server 2019 and above;
• Solid understanding of relational databases and related ORM frameworks;
• Working in agile software development teams using Azure DevOps;
• Experience building advanced analytical and statistical software solutions would be an asset;
• Experience with consuming data from a data lake house or data services (Trino) would be an asset;
• Experience with Docker and RabbitMQ would be an asset;
• Experience with Event Sourcing systems would be an asset;
• Excellent command of the English language.

Responsibilities

• Develop and maintain full-stack web applications;
• Build responsive web interfaces using Angular, TypeScript, HTML and CSS;
• Develop backend services and Web APIs using C#/.NET or Python frameworks;
• Design and work with relational databases, SQL Server and ORM frameworks;
• Integrate APIs, data services and external systems;
• Troubleshoot, optimize and maintain existing applications;
• Collaborate with Agile development teams using Azure DevOps;
• Contribute to code reviews, testing, documentation and continuous improvement.