Apprenticeship – Finance (m/f/d) – Issy-les-Moulineaux

Sourcing Tomorrow’s Success! Are you looking for an apprenticeship starting in September 2026, where you can quickly gain skills and participate in impactful projects? Buy. In, a common company between Orange and Deutsche Telekom is the largest procurement alliance in the Tel. Co world. We feature sourcing projects over three continents and negotiating €20 billion per years for 45+ customers.

At Buy. In, 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.

Description of domain/function: With Buy. In, you will be given the opportunity to be part of the small team dedicated to Performance Controlling in a multicultural, fast-moving and challenging environment! Our flex and open office in Issy-les-Moulineaux is only a few minutes to the Tram, RER and metro stations.

Your responsibilities

As an apprenticeship, you will support the Controlling team under the supervision of experienced team members. This includes typical Controlling activities in the areas of planning, monitoring and analysis: Support the month-end closing process , ensuring the timely, accurate and reliable reporting of procurement performance data.

Monitor and analyse KPIs , identifying trends and opportunities for continuous improvement. Prepare impactful presentations to communicate insights and performance results to stakeholders. Maintain regular reports , ensuring accuracy, consistency and alignment with customer and stakeholder requirements. Prepare ad hoc reports and analyses by collecting, validating and consolidating data from multiple sources.

Support the 2027 target-setting process through data preparation, reporting and analysis. Develop knowledge of world-class procurement practices , processes and performance management.

Your profile

Currently pursuing a degree Master 1 or Master 2 in finance, accounting, or administration.General understanding of Accounting and Controlling concepts, obtained during studies and previous internships Intermediate or preferably advanced experience with Office applications (Excel, PowerPoint, Word) Basic knowledge of Power BI (data modelling, visualization, Power Query, DAX).

Basic knowledge of SQL for data manipulation. Willingness to learn and adapt to new technologies, e.g. RDBMS concepts, Python, Azure, data warehousing, ETL tool etc. Why Joining BUYIN A unique opportunity to gain practical Finance experience in a leading telecommunications joint venture. Mentorship and guidance from experienced finance professionals.

Exposure to a diverse range of Finance functions and projects. A dynamic and collaborative work environment A “human sized” company, composed of a talented team of 30+ nationalities empowering the workplace with values of Teamwork, Commitment and Respect Flexible working conditions (hybrid working, working from abroad) and time unique opportunity to gain practical Finance experience in a leading telecommunications joint venture Cutting-edge procurement with topics on AI, IoT, and Sustainability Exciting, multifaceted projects for our mother companies (Orange & Deutsche Telekom) & partners Diversity is a part of Buy.

In 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.