Working Student 20h/ week - Sustainability Performance in the Supply Chain(m/f/d)

Working Student 20h/ week - Sustainability Performance in the Supply Chain(m/f/d) Join a diverse, human-sized company with flexible work, competitive packages, and profit sharing. Benefit from continuous training and innovative projects in AI, IoT, and sustainability. Apply Sourcing Tomorrow’s Success! BuyIn, a common company between Orange and Deutsche Telekom is the largest procurement alliance in the TelCo world. We feature sourcing projects over three continents and negotiating €20 billion per years for 45+ customers. At BuyIn, we continuously strive to innovate for our stakeholders, 5G, IoT, AI, Cloud and Robotics are part of our day-to-day business operations. By prioritizing environmental stewardship, social responsibility, and ethical business practices, our company is committed to building a sustainable future for both our business and the planet. We are looking for a Working Student (m/f/d) t o support our Sustainability team. You will gain hands-on experience with a focus in learning and development tasks and get to know the day-to-day business of an internationally operating company- You will take responsibility, work independently and support Buyln's Sustainability Team through the following tasks. BuyIn is supporting DT and Orange in achieving their ambitious sustainability targets. This is calling for the combination of both, fact-based expertise and creativity. As a working student, you will drive and support BuyIn’s activities to enhance sustainability performance in the supply chain. You will work on further strengthening sustainability requirements in the supplier selection process. You will as well digitize data intake. Also, you will work in selected strategic projects to improve sustainability / carbon footprint together with key vendors including various global players from the IT and NT industry. Sustainability matters in our vendor selection process already today – together with you we want to take the next step! Your profile Enrolled student in Economical / business administration, techno-economical or technical background (Electrical/Mechanical/Network) You have fun at work, you like to work in a team and you want to make an impact in the things you do Interest in telecommunication or network technologies and/or manufacturing industries Previous internships and practical engineering experience are an important decision criteria Capability to identify cost drivers, understand their specifications and group them into functionalities Fluid in advanced Excel skills, some basic programming and interest to master PowerBI automation and AI frameworks Willingness to work independently and to adapt quickly to new and challenging tasks Systematic approach, confidence to research information and to present them to the team Analytical mind-set, strong problem solving skills and an ability to be pro-active with a sense of urgency Eagerness to work on a multi-cultural, fast-changing and cross-functional environment Mandatory fluency in English and German (B2), French as a plus What we offer Practical experience in an international environment Flexible working hours and hybrid setup Attractive student compensation WHY JOINING BUYIN Exciting, multifaceted projects for our mother companies (Orange & Deutsche Telekom) and their partners Cutting-edge procurement on technologies enabling connectivity services around the globe The talented team of 30+ nationalities Empowering the workplace with values of Teamwork, Commitment, and Respect 10+ years of track record in excellence in strategic procurement with a spend of 20 billion euros of spend for 45+ countries Agile and data-driven Work in a multicultural and open-minded environment in Issy-les-Moulineaux (France) or Bonn (Germany). Experience both the familiarity of a smaller company and the opportunities presented by our parent companies. Looking to the future, you can expect to hone your expertise in your corner of the market and potentially grow into different roles - see where it could take you! Diversity is a part of BuyIn We look forward to receiving your application regardless of gender, nationality, ethnic and social origin, religion, philosophy of life, disability, age, sexual orientation, or identity. Be part of something bigger: shape the future of telecommunications with us! Department Devices & Platforms (D&P) - Program and Stakeholder Management Locations Bonn Remote status Hybrid Employment type Temporary Weekly working hours 20 Date of employment 01 September, 2026 Hiring manager Eric Rawolle