Must have

• .NET

• Microsoft Azure

• React

• TypeScript

• C#

• Entity Framework

• MS SQL Server

• REST API

• JavaScript

• CI/CD Pipelines

• English

• Polish

Nice to have

• Docker

• Agile

• Zustand

Requirements description

• 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)
• Basic to intermediate experience with React
• Proficiency in TypeScript/JavaScript for frontend development
• Understanding of frontend testing principles
• Good understanding of CI/CD pipelines
• Worked with the team on design, dependencies, backlog, and code maintainability of a product
• Mature understanding to strike the balance between ideal and pragmatic solutions on a case-by-case basis

Nice to have:

• Docker experience
• Experience in upgrading legacy systems
• Experience in Agile environment
• Knowledge of frontend state management libraries (e.g. Zustand)

Offer description

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:

Back-End:

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

Front-End:

• React 18
• TypeScript

What we offer:

💰 Attractive remuneration: B2B 110–130 PLN/hour net

🏡 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 Fullstack 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
6. Contribute to frontend development as needed, primarily using React and TypeScript, to ensure seamless integration with backend services.