Internship - 6 months - Developer FullStack F/H

Company Description

Natixis Corporate & Investment Banking is a leading global financial institution that provides advisory, investment banking, financing, corporate banking and capital markets services to corporations, financial institutions, financial sponsors and sovereign and supranational organizations worldwide.

Our teams of experts in close to 30 countries advise clients on their strategic development, helping them to grow and transform their businesses, and maximize their positive impact. Natixis CIB is committed to aligning its financing portfolio with a carbon neutrality path by 2050 while helping its clients reduce the environmental impact of their business.

As part of Groupe BPCE, the second largest banking group in France through the Banque Populaire and Caisse d’Epargne retail networks, Natixis CIB benefits from the Group’s financial strength and solid financial ratings (Standard & Poor's: A+, Moody's: A2, Fitch Ratings: A+,R&I: A+).

Job Description

You are joining the FICT/Summit OTC team, made up of 20 people, as a FullStack developer for a internship of 6 months from September 2026 .

As part of the Test & Trust initiative, we need to develop a tool for running and monitoring non-regression tests aimed at developers, Business Analysts (BA) and Squad Leads. This tool should also make it possible to visualize the discrepancies between the different executions and manage their validation.

This hands-on experience will provide valuable insights into the practical application of software development principles and techniques. You will benefit from continuous training and work in contact with experts in a multicultural environment.

In collaboration with your tutor, your main tasks will be:

• the progress of system development,
• improving existing features,
• the implementation of new features, the contribution to the overall improvement of the system.

#Transformative finance
You operate in an international and inclusive environment, fostering collaboration with concrete missions and a real impact. We will accompany you throughout your experience with us so that you can learn and develop your skills working alongside experienced professionals.

You also have the opportunity to engage in favor of society and causes that are important to you through our corporate foundation.

In addition to an attractive internship allowance calculated according to your training and level of education, you benefit from a reimbursement of 60% of your transport ticket, one paid day of authorized leave for each month worked, and access to the company’s restaurant.

You will also have access to the works council.

Required Skills/Qualifications/Experience

As a Bac+4/5 student, you are preparing a degree (university or engineering school) with a specialization in FullStack computer science.

You have a good knowledge of REST APIs and the Python and JavaScript languages.

You are reliable, rigorous and organized.

And last but not least, you are perfectly fluent in English.

You will be contacted by one of our recruiters before meeting our business experts.

An ideal moment of exchange to highlight your personality and your project.