# Mid-Senior Backend Engineer (.NET)

> InventYOU AB · Athens, Greece (Hybrid) · Full-time · Posted 2026-09-16

**Workplace:** hybrid

## Description

We are looking for a motivated and experienced **Mid-Senior Backend Engineer (.NET)** to join a core application development team, with a primary focus on backend development while also contributing to front-end development when needed.

In this role, you will work with **C#, .NET Framework, and .NET Core**, developing and maintaining enterprise applications, APIs, and integrations while collaborating closely with engineers, Functional Analysts, and QA teams.

### **Key Responsibilities**

-   Develop and maintain backend applications using **C#, .NET Framework, and .NET Core**
-   Design and implement **REST APIs** and integration services with external systems
-   Collaborate with engineers and Functional Analysts to analyze requirements and translate them into technical solutions
-   Develop clean, maintainable, and reliable application code
-   Participate in **code reviews, unit testing, and QA processes**
-   Troubleshoot issues and support bug fixing
-   Optimize and improve existing application code
-   Work with relational databases and data-driven applications
-   Contribute to front-end development activities when required
-   Collaborate effectively with development, QA, and business teams throughout the development lifecycle

## Requirements

-   University degree in **Computer Science, Engineering**, or a related field
-   **3+ years of professional software development experience**
-   Strong hands-on experience with **C#, .NET Framework, and .NET Core**
-   Good knowledge of designing and consuming **REST APIs**
-   Experience with **relational databases**, preferably SQL Server or equivalent
-   Basic knowledge of **front-end technologies**
-   Experience with collaboration and development tools such as **Jira and Azure DevOps**
-   Experience with code reviews, unit testing, and software quality practices
-   Ability to analyze requirements and translate them into effective technical solutions
-   Ability to work collaboratively within a development team and meet defined timelines
-   Strong analytical and problem-solving skills
-   **Previous experience in a banking or fintech environment**

### **You will be a great candidate for us if you**

-   Have a strong backend development mindset and enjoy working with the **.NET ecosystem**
-   Write clean, maintainable, and reliable code
-   Are comfortable working with APIs, databases, and enterprise integrations
-   Can contribute across the development lifecycle, from requirements through implementation and testing
-   Enjoy collaborating with both technical and functional teams
-   Take ownership of development tasks and proactively solve technical challenges

## Benefits

### **Why join inventYOU**

-   Work on challenging enterprise software development projects
-   Develop modern backend solutions using **C# and .NET technologies**
-   Gain exposure to complex APIs, integrations, and financial technology environments
-   Collaborate with experienced engineering, QA, and business professionals
-   Continue developing your technical expertise through modern and challenging projects

## Apply

[Apply at InventYOU AB](https://apply.workable.com/inventyou-ab/j/61F234825E/apply)

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