Fullstack Developer - .NET 8/9 & React (m/f/d)

Optimus Search; Düsseldorf; Vor Ort; EUR 65.000 - 85.000; Vollzeit

Zusammenfassung

A leading product-based company in Germany is seeking a Senior Fullstack .NET Developer to design and modernise software architecture. The role focuses on developing and integrating software solutions, migrating legacy systems to cloud platforms, and ensuring high code quality. Candidates should have over 3 years of C# experience, strong communication skills, and fluency in both German and English. Join a hyper-growth environment offering opportunities for career advancement.

Qualifikationen

• 3+ years experience within Software Development (C#).
• Strong focus on code quality and test-driven development (TDD).
• Excellent communication skills.

Aufgaben

• Design, develop, and document the architecture of a newly acquired product.
• Extract components from a legacy system and migrate them to modern platforms.
• Engage in full-stack development using C#.NET 8/9, ASP.NET Core, and more.

Kenntnisse

C#.NET

ASP.NET Core

React

Microservices

Azure cloud services

Domain-Driven Design (DDD)

Test-driven development (TDD)

Code quality focus

Fluency in German

Solid English skills

Jobbeschreibung

About us

Optimus Search has partnered with one of Germany’s leading product-based companies focused on energy efficiency and the reduction of CO₂ emissions, contributing to a more sustainable future. Due to significant success over the past five years, the company is currently in a phase of hyper-growth, offering a clear path for career advancement. They are now seeking Senior Fullstack .NET Developers to join newly formed teams responsible for modernising legacy systems and building a new software architecture using the latest .NET 9 technology. The company has offices in Dresden, Bremen, and Köln.

Tasks

• Design, develop, and document the architecture of a newly acquired product and integrate standardised software solutions.

• Extract components from a legacy system and migrate them to modern, cloud-based platforms.

• Coordinate and manage system interfaces in collaboration with cross-functional teams.

• Engage in full-stack development using C#.NET 8/9, ASP.NET Core, EF Core, React, REST, Microservices, and Azure cloud services.

• Develop loosely coupled, resilient architectures designed for long-term scalability.

Profile

• 3+ years experience within Software Development (C#).

• A passion for software engineering in a cloud-native environment.

• Hands-on experience with Domain-Driven Design (DDD).

• Strong focus on code quality and test-driven development (TDD).

• Excellent communication skills.

• Willingness to take operational responsibility within the team.

• Fluency in German (B1 minimum) and solid English skills (also C1 level).