1&1 | Germany | 76xxx Karlsruhe | Student job | Part time - flexible / Home office | Published since: 30.06.2026 on stepstone.de
Working Student - Performance Analytics in Online Customer Sales (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. We are the stock customers marketing experts - with personalized, data-driven campaigns binding on all contact channels and we develop our customers. Be part of 1&1. .
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Your tasks • Your profile • What we offer
We are looking for motivated working students (m/w/d) who support our team in data-driven online sales. You expect exciting tasks with direct impact on our sales performance: Support for performance analysis along the entire customer journey (traffic, conversion, value) Creation and development of campaign-accompanying evaluations) Implementation and preparation of deep-dive analyses for identifying performance drivers deriving concrete optimization measures to increase conversion rate and sales Support for A/B tests and evaluation of campaign and pricing measures Analysis of customer behavior, funnel data and offering performance Support for operational topics such as campaign levels and monitoring Working on strategic and innovative topics in online sales
You are in the main course of your studies, ideally focusing on BWL, economics, data analytics or marketing, and you want to have a direct impact on the performance of a major online distribution: Strong analytical thinking and high number affinity Good knowledge of SQL, Python or R Interest in data-driven online sales, conversion optimization and testing Understanding digital business models, webshops or app tunnels Secure handling of Excel and PowerPoint Structured, independent working and high sense of responsibility Team spirit, initiative and fun in performance themes Availability ideal for at least 6 months
- 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
- EGYM-Wellpass
Location
 | 1&1 | |
| 76137 Karlsruhe | ||
| Germany |
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