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

Optimus Search; Dortmund; Vor Ort; EUR 60.000 - 80.000; Vollzeit

Zusammenfassung

A leading product-based company in Germany is seeking a Senior Fullstack .NET Developer to help modernize legacy systems and build new software architecture using the latest .NET 9 technology. The position involves engaging in full-stack development, designing resilient architectures, and collaborating with cross-functional teams. Ideal candidates will have over 3 years of C# experience, a passion for cloud-native environments, and fluency in German (B1 minimum) with solid English skills. This role offers a clear path for career advancement in a fast-paced environment.

Qualifikationen

• 3+ years experience in Software Development with C#.
• Hands-on experience with Domain-Driven Design (DDD).
• Willingness to take operational responsibility.

Aufgaben

• Design, develop, and document the architecture of new products.
• Migrate components from legacy systems to modern platforms.
• Engage in full-stack development using the latest technologies.

Kenntnisse

Software Development in C#

Code Quality

Test-Driven Development

Fluent German

Solid English Skills

Tools

C#.NET 8/9

ASP.NET Core

EF Core

React

Azure

Jobbeschreibung

Über uns

About usOptimus 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).