Senior Fullstack Developer - .NET & Angular 19 (m/f/d)

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

Zusammenfassung

A leading company focused on energy efficiency and CO₂ reduction is seeking a Senior Fullstack Developer. You will modernize legacy systems and build new software architecture using .NET 9 and Angular 19. Join a hyper-growth environment with a clear path for career advancement.

Qualifikationen

• Experience in a cloud-native environment.
• Operational responsibility within the team.

Aufgaben

• Design and develop architecture for new products.
• Migrate components from legacy systems to cloud.
• Engage in full-stack development using modern technologies.

Kenntnisse

Software Engineering

Domain-Driven Design

Code Quality

Test-Driven Development

Fluency in German

English Skills

Tools

.NET 9

ASP.NET Core

EF Core

Angular 19

RxJS

NgRx

REST

Microservices

Azure Cloud Services

Jobbeschreibung

Senior Fullstack Developer - .NET & Angular 19 (m/f/d)

Senior Fullstack Developer - .NET & Angular 19 (m/f/d)

1 week ago Be among the first 25 applicants

Get AI-powered advice on this job and more exclusive features.

OOptimus 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 modernizing legacy systems and building a new software architecture using the latest .NET 9 technology. The company has offices in Aachen, Bremen, and Köln.

Your Responsibilities as a Senior Fullstack Developer:

• Design, develop, and document the architecture of a newly acquired product and integrate standardized 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

What We’re Looking For:

• 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)
• Willingness to take operational responsibility within the team
• Fluency in German (C1 minimum) and solid English skills (also C1 level)

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering, Information Technology, and Administrative

• Industries

  IT System Custom Software Development

Referrals increase your chances of interviewing at Optimus Search by 2x

Sign in to set job alerts for “Full Stack Engineer” roles.

Cologne, North Rhine-Westphalia, Germany 1 month ago

Cologne, North Rhine-Westphalia, Germany 3 days ago

(Senior) Software Engineer - UI-Development C++/Qt (m|f|d)

Bonn, North Rhine-Westphalia, Germany 2 months ago

Bonn, North Rhine-Westphalia, Germany 5 hours ago

Cologne, North Rhine-Westphalia, Germany 1 week ago

Bonn, North Rhine-Westphalia, Germany 1 week ago

Cologne, North Rhine-Westphalia, Germany 1 month ago

Senior/Staff Product Engineer (Full Stack) (m/f/d)

Cologne, North Rhine-Westphalia, Germany 3 hours ago

Full Stack Engineer - Google Cloud (all genders)

Cologne, North Rhine-Westphalia, Germany 2 days ago

Full Stack Engineer - Google Cloud (all genders)

Full Stack Engineer Generative AI (all genders)

Cologne, North Rhine-Westphalia, Germany 1 day ago

Full Stack Engineer - Google Cloud (all genders)

Bonn, North Rhine-Westphalia, Germany 1 week ago

Full Stack Engineer Generative AI (all genders)

Bonn, North Rhine-Westphalia, Germany 1 week ago

Full Stack Engineer Generative AI (all genders)

Cologne, North Rhine-Westphalia, Germany 5 days ago

Cologne, North Rhine-Westphalia, Germany 6 days ago

Senior Software Engineer: Electricity Markets Modelling

.NET Software Engineer – .NET 9, C#, Blazor, Azure – Cologne

Cologne, North Rhine-Westphalia, Germany 3 days ago

Software Engineering Manager - Desktop and Embedded Linux Optimisation

C++ Graphics and Windowing System Software Engineer - Mir

Last und Performance Engineer (all genders)

Cologne, North Rhine-Westphalia, Germany 2 weeks ago

Embedded Linux Senior Software Engineer - Optimisation

Cologne, North Rhine-Westphalia, Germany 3 weeks ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.