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Mid-Senior Backend Engineer (.NET)

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Onsite

Mid-Senior Backend Engineer (.NET)

InventYOU AB

Mid-Senior Backend Engineer (.NET)

Skills

SQL QueriesC#.NETTesting & QAJiraAzure

1 month ago

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Important information


Contract type:

Permanent

Location:

Athens, Greece

Work mode:

Onsite

Published on:

16 September 2026

What they need


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

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