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Senior Frontend Developer (m/w/d)
Köln
3 days ago
💻 Open Source🔥 HotExplicitly mentions vibe coding and AI-first prototyping tools; expects prompting LLMs experience and use of Figma/Make/Lovable/Claude for prototyping.
About the Role
Senior Frontend Developer to design and implement a master data system for out-of-home advertising, build and test new features with a focus on performance and test automation, and mentor team members while collaborating closely with backend teams and business stakeholders.
Job Description
Role
Senior Frontend Developer responsible for designing and implementing a leading master data system in the out-of-home advertising domain. Work in a cross-functional team to deliver high-quality, performant web applications, ensure test automation, and mentor colleagues.
Key Responsibilities
- Conception and independent implementation of a master data system for outdoor advertising within a cross-functional team
- Develop new features, write and maintain tests, and ensure high code quality and application performance
- Translate requirements in close collaboration with business stakeholders and backend teams to deliver fit-for-purpose solutions
- Take on mentoring responsibilities, perform code reviews, and share technology knowledge across the team
Tech Stack (explicitly used)
- Frontend: Angular 20, NGXS, Observables
- Testing: Jest, Cypress, Playwright
- Cloud / DevOps: Azure, Azure DevOps, Azure Static Web Apps, Docker
- Backend / Data: Python, Django REST Framework, MSSQL
- Collaboration / Processes: Jira, Confluence
- Prototyping / AI tools mentioned: Figma, Make, Lovable, Claude, Large Language Models (LLMs)
Requirements
- Completed degree, vocational training or equivalent professional experience in computer science or related field
- Strong experience developing web applications with Angular and declarative programming using Observables
- Experience or clear motivation to work with prompting LLMs and generative AI
- Ideally experience with frontend development for mobile devices (responsive design), prototyping and vibe coding with AI-first tools
- Confident German and English language skills
Benefits
- 30 days vacation per year
- Sabbatical options
- Flexible working model: flexible hours with a combination of office presence and 30% mobile work
- Jobbike and subsidy for Deutschlandticket
- Subsidy for company daycare (up to 3 years)
- Company cafeteria / lunch, coffee and snacks
- Vermögenswirksame Leistungen (capital-forming benefits)
- Corporate discounts and additional employee services (laundry, hairdresser, physiotherapy)
- Training and development programs, internal talent programs and onboarding events
- Modern, paperless offices
- Employee referral program, occupational health checks and events, company events, communities
- IT benefit program for financing technical equipment
Location & Employment
- Location: Köln, Germany
- Employment: Full-time