Senior Frontend Developer (m/w/d)

We're Ströer! We are a leading German media house and rely on the strengths of the Out of Home business supported by the accompanying business areas Digital & Dialog Media and DaaS & E-Commerce. With our “OOH plus” strategy, we make more of every communication concept and create solutions for efficient consumer speech in digital and public spaces. Join us and let us get more out of every medium together and grow on every task. 11.000+ innovative heads

1 Out of Home Providers & Digital Marketers in Germany

€2.05 billion in revenue for the total year 2024 For our Cologne location we are looking for a Senior Frontend Developer (m/w/d) in full time at the next possible time.

You design and implement the leading master data system in the field of outdoor advertising in a responsible and cross-functional team You develop new features and test your code in close consultation with the department Take care of the best possible performance and code quality of the solutions, and test automation is important to you You work closely with departments and, if necessary, Backend teams together to understand requirements and deliver matching solutions You act as mentor:in: You support other team members through code reviews and share your experience and technology know-how This is our technology stack Angular 20 (with NGXS as State Management) Jest / Cypress / Playwright Azure / Azure DevOps / Docker / Azure Static Web Apps Python / Django REST-Framework / MSSQL DB Jira / Confluence

You have completed your studies, completed training or relevant professional experience in the field of computer science You have well-founded experiences in creating web apps with angular and experience in declarative programming with Observables You have experience in the prompting of Large Language Models (LLMs) and with generic AI – or the strong motivation to work on these topics Ideally, you already have experiences in front-end development for mobile devices (responsive design) Practical experience in “Vibe Coding” and prototyping with AI-first tools such as Figma, Make, Lovable or Claude You have certain knowledge of German and English

Make more of your job. We rely on the potential of each individual and offer you an environment where you can develop, take responsibility and create innovative solutions in the team. Use the chance and discover our Benefits that support you on your way with us: 30 days holiday: Your time for rest per year Workation: Work up to 20 days from European countries Sabbatical: Possibility for longer periods Flexible working hours: confidence working time and home office options (2-3 days/week) Mobility & Grants: Jobbike, Germany Ticket Grant, Free Parking Grant to the KITA: Childcare up to 3 years Gastronomy: Lunch, coffee and snacks in the café lounge Benefits to Promote Your Financial Reserves Corporate Benefits: Discounts for travel and event tickets Additional services: Laundry, hairdressing and physiotherapy Further development: Interne Talent Programs, Women's Promotion, Training Offers Onboarding events: Comprehensive incorporation and introduction events Modern offices: Paperless jobs with digital processes Employee recommendation programme: Premiums for successful recommendations Medical care: Health checks and events, as well as grants to screen glasses Company events: Christmas parties, team excursions and B2Run participation Communities: Networks like women's networks IT-Benefit program: financing offers for technical equipment, also for private use Make your next career step in an exciting environment – we look forward to meeting you! !