Apprenticeship - 2 years - Developer/Test & Refactoring Market Data/IA F/H

Descrizione del lavoro:

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

Job Description

You join our IT Market Data team who are looking for a Developer Test & Refactoring Market Data/IA, for a 2-year apprenticeship from September 2026.

The IT Market Data department is in charge of developing, maintaining and modernizing critical applications for managing and disseminating market data for Natixis and the BPCE group.

During this apprenticeship, you will benefit from concrete and highly impactful experience on a critical and central application for banking data, with close supervision by the IT team. You will develop highly sought-after skills on the market (software quality, testing, refactoring, CI/CD, security, applied AI in development) and put into practice modern tools to increase productivity, within a stimulating work environment, flexible and results-oriented.

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

* Contribute to the modernization of a critical application in C# by strengthening software quality through the implementation of robust tests, analysis of existing code and refactoring.
* Consolidate unit and integration tests: analyze existing code, identify risk areas, write clear and sustainable tests, cover critical cases in accordance with business requirements, and integrate these tests into the CI/CD pipeline.
* Participate in the analysis and refactoring of code: map modules and their dependencies, propose and implement structural improvements (modularisation, decoupling, readability), reduce technical debt and improve code coverage, while ensuring traceability via the SonarQube reports.
* Explore and deploy AI solutions to automate test generation and boilerplate code, design scripts and tools (mocks, stubs, fixtures) and evaluate productivity and quality gains.
* Contribute to quality and security controls: use SonarQube for code quality, Checkmarx for security scans, track remediation and propose process improvements.
* Work in agile mode within the Market Data team, participate in ceremonies (daily meetings, code reviews, demonstrations) and communicate clearly on the results, technical choices, and risks.

The expected results of your mission will include a measurable improvement in code coverage and a reduction in technical debt, integration and monitoring of SonarQube reports (coverage, quality), as well as the monitoring and remediation of vulnerabilities identified via Checkmarx. You will also be required to design prototypes of automation tools that rely on AI to generate code or tests. The expected key deliverables include a robust test suite, code analysis reports, a structured refactoring plan and demonstrations of the developed AI tools.

#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 salary calculated according to your training and level of education, you benefit from the reimbursement of your transport ticket up to 60%, paid leave, access to the company's restaurant as well as health and welfare coverage.

You will also benefit from the profit-sharing and/or participation in proportion to your attendance time.

You will also have access to the works council.
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Required Skills/Qualifications/Experience

Student at the Bac+4/5 level, you are preparing a degree from an engineering school, with a specialization in software development/software engineering.

You have a solid foundation in C# and/or NETDEVELOPMENT.
You have notions of unit tests and integration (xUnit, NUnit, MSTest).
You are interested in TDD and DevSecOps and you have a first experience in Git.
You manifest an appetence for AI applied to automation.
You show curiosity and autonomy.
You appreciate teamwork and have a good sense of organization.

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

For a better treatment of your application, we thank you for indicating on your resume the type of contract (apprenticeship or professionalization) that your school offers as well as the pace of work-study.

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

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