Senior Frontend Developer | Informatiker (m/w/d)

Ströer CORE GmbH & Co. KG

Köln, Nordrhein-Westfalen, Deutschland
Published Jan 1, 2026
Full-time
No information

Job Summary

This position calls for a Senior Frontend Developer to join a cross-functional team in Cologne, focusing on the conceptualization and implementation of the leading master data system for Ströer's outdoor advertising business. Day-to-day responsibilities include developing new features, ensuring optimal performance and high code quality through rigorous test automation, and collaborating closely with business departments and backend teams to translate requirements into effective solutions. A key aspect of the role involves acting as a mentor, supporting team members through code reviews and sharing advanced technology know-how. The ideal candidate must possess strong expertise in creating web applications using Angular 20 (leveraging NGXS for state management) and declarative programming with Observables. Experience with Large Language Models (LLMs) and Generative AI is highly valued, though a strong motivation to integrate these topics is acceptable. The role offers attractive benefits, including flexible working hours, home office options (2-3 days/week), and up to 20 days of 'Workation' from other European countries.

Required Skills

Education

Completed university degree, completed vocational training, or relevant professional experience in the field of Informatics/IT

Experience

  • Strong professional experience in creating web applications using Angular
  • Experience in declarative programming with Observables
  • Experience or strong motivation to work with Large Language Models (LLMs) and Generative AI
  • Desirable experience in Frontend development for mobile devices (Responsive Design)
  • Advantageous practical experience in Vibe Coding and Prototyping with AI-first tools

Languages

German (Fluent)English (Fluent)

Additional

  • Not specified