Internship - 6 months - Developer Filtering Tool - Production Alerts F/H

You join our Booking & Post Trade Processes team within the IT department Global Markets and Risks, which is looking for a Developer Filtering Tool – Production Alerts, for a 6-month internship from May 2026.

In our information system, many batch processes automatically generate alerts by email. Over time, this volume has exploded, creating a constant 'noise' that leads to email overload, loss of team responsiveness and operational risk.

In this team our mission is to design and deploy an end-to-end solution for a qualitative and intelligent alerting. The objective is to develop a centralized tool that intercepts, analyzes and filters alerts to only transmit relevant information to the right people. As an intern, you will be at the heart of improving the reliability and responsiveness of our production.

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

• Identify the sending batches and map the types of alerts, volumes, formats, and sending frequencies.
• Identify redundant false positives and alerts with teams.
• Define the notion of 'relevant alert' (criticality, impact, recurrence), propose a target architecture (alert gateway, scheduler plugin, etc.) and design the rules engine: simple rules (keywords), aggregation (1 alert for 100 identical errors), thresholds.
• Develop the tool (Java/Spring Boot or Python) with API and configuration base, implement the collection system (SMTP, API, logs, etc.) and create a simple interface (UI or configuration file) to manage rules without redeployment.
• Test in 'shadow mode' to validate the rules without blocking alerts, measure volume reduction and adjust the rules according to feedback, and industrialize and deploy the solution in active mode on a pilot perimeter.
• Write the technical documentation and user guide.

• Train the teams in the use and maintenance of the tool.

  
  

  For information, our technical stack is:

• Languages: Java (Spring Boot) / Python
• Protocols & Messaging: SMTP, REST API
• Database: SQL

#FinanceTransformative
You evolve in an international and inclusive environment, promoting 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 by working alongside experienced professionals.
You also have the opportunity to commit yourself in favor of society and causes that are dear to your heart through our corporate foundation. 
In addition to an attractive internship allowance calculated according to your training and level of education, you benefit from the reimbursement of your transport ticket up to 60%, one day of authorized absence paid for each month worked and access to the company’s restaurant.
You will also have access to the works council.

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: A1, Fitch Ratings: A+, R&I: A+).