Must have

• .NET

• Microsoft Azure

• MVC

• .Net

• C#

• Entity Framework

• English

• Polish

Nice to have

• MS SQL Server

• REST API

• API

• Docker

Requirements description

Requirements:

• Strong experience with ASP .NET Core and C#
• Commercial experience with .NET 8
• Familiarity with Azure services
• REST API experience
• Solid knowledge of MS SQL Server
• Fluent in English (spoken and written)

Nice to have:

• Docker experience
• Experience in upgrading legacy systems

Offer description

Backend Developer

We are SIENN Living Online Technology! Let’s grow with us! Do you want to be a part of something meaningful? We are working on an international project in the financial sector for a Dutch Client specializing in audits, accounting, payroll, HR, and tax advisory.

Project Information: We are supporting the development and modernization of an existing accounting application.

Technology stack:

• ASP .Net Core MVC, .Net 8.0, C#
• Azure
• Entity Framework
• Git, MS SQL Server

What we offer:

💰 Attractive remuneration: B2B 14 500 – 23 000PLN/month net (includes 26 days of paid days off)

🏡 100% remote work opportunity available

🌱 We care about our employees’ development and stability

🌍 Work in an international environment

🎓 International training and certifications (e.g., Microsoft MCP)

🚀 Continuous personal growth: defined career paths, additional training leave, and training budget

🏥 Medical package, Multisport card, life insurance, and language courses

🏢 Modern office

💡 Knowledge sharing sessions: e.g., Agile Coffee/Agile Knowledge Sharing, Tech-Zone, Chillout Zone

😊 A great workplace atmosphere!

Your responsibilities

1. As a Backend Developer, you will:
2. Build and modernize backend services using ASP .NET Core MVC and .NET 8.0
3. Participate in migration to Microsoft Azure
4. Ensure code quality and scalability
5. Collaborate with international teams