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

Optimus Search; Bonn; Vor Ort; EUR 60.000 - 85.000; Vollzeit

Zusammenfassung

A leading technology recruitment firm is seeking Fullstack .NET Developers in Germany to join teams modernizing legacy systems and creating scalable cloud-based architectures using .NET 9 technologies. The ideal candidates should have a passion for software engineering, hands-on experience with DDD, a focus on code quality, and excellent communication skills in both German and English.

Qualifikationen

• 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) and English (C1 level).

Aufgaben

• Design, develop, and document the architecture of a new product.
• Extract components from a legacy system to cloud platforms.
• Coordinate system interfaces with cross-functional teams.
• Engage in full-stack development using modern technologies.
• Develop architectures designed for long-term scalability.

Kenntnisse

C#.NET 9

ASP.NET Core

Domain-Driven Design (DDD)

Test-Driven Development (TDD)

Fluency in German

Solid English skills

Tools

Angular 19

Azure cloud services

EF Core

RxJS

NgRx

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 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 Giessen, Koblenz, and Berlin.

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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 9, ASP.NET Core, EF Core, Angular 19, RxJS, NgRx, REST, microservices, and Azure cloud services.
• Develop loosely coupled, resilient architectures designed for long-term scalability.

Profile

• 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 (C1 level).