1&1 | Germany | 76xxx Karlsruhe | Permanent position | Full time / Home office | Published since: 06.05.2026 on stepstone.de
CRO & Onsite Performance Manager (m/f/d)
1&1 is one of the leading telecommunications providers in Germany with over 3,100 employees and nearly 16 million customer contracts. With pioneering spirit, unusual ideas and creative teams, we have won a leading market position in mobile and broadband connections. By combining the over 67,000 km long 1&1 fiber optic network and regional networks, we create Germany's most extensive fiber optic network. We also build the most modern 5G network in Europe, based on the new Open-RAN technology. With open interfaces and 5G functions in a powerful cloud infrastructure. Continue the 1&1 success story and develop strong sales campaigns. Be part of 1&1. .
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Your tasks • Your profile • What we offer
In this strategically important role, you are responsible for the data-driven optimization of our digital customer journeys and actively promote the conversion performance of our products. The body must first be occupied for 12 months. The tasks include: Development and implementation of a holistic CRO strategy along the entire customer journey Conception, control and evaluation of A/B and multi variant tests Identification of optimization potentials based on Web Analytics, User Behavior and KPI analyses Close cooperation with UX/UI, analytics, product management and development deriving concrete measures from qualitative and quantitative insights (e.g. Funnel analyses, User Research) Ensuring consistent and user-centric UX and design quality Construction and further development of testing and tracking setups Stakeholder Management and Presentation of Results on Management Level Planning and control of advertising space in close coordination with relevant internal and external stakeholders Coordination, control and implementation of release processes Participation in the design, evaluation and continuous optimization of external advertising materials Content coordination, quality assurance and consultation of SEA Ads Analysis and evaluation of the performance of advertising space including the linked target landing pages Creation and presentation of a holistic, cross-channel marketing concept
Successfully completed studies, e.g. in (economic) informatics, economics, economic psychology or comparable Multiannual experience in Conversion Rate Optimization / Web Analytics / Performance Optimization Strong numerical affinity and safe handling of popular analytic tools (e.g. GA4, Adobe Analytics) Experience with testing tools (e.g. Optimizely, VWO, AB Tasty) Embossed understanding of UX, design and user behavior Ability to translate data into clear hypotheses and measures Experience in working in cross-functional teams (product, tech, design) Structured, analytical and creative mindsets
- Attractive salary
- Strong community of team players
- Working hours of confidence with flexible classification and the possibility of working up to 40% mobile
- Numerous training options on- and offline
- Discounts on 1&1 products and for various leisure activities
- In-house restaurant
- Free drinks and fresh fruit
- Jobrad grant
Location
 | 1&1 | |
| 76137 Karlsruhe | ||
| Germany |
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