Senior Solutions Architect for ArcelorMittal Group Treasury

Location: Paris, Ile-de-France, France

Responsabilities :

• Support the department manager in defining and implementing the Information Systems strategy.
• Review the current architecture and define the target architecture for software solutions and infrastructure in alignment with the company's overall strategy.
• Drive continuous improvement of the production environment's stability by working closely with stakeholders to configure, maintain, and monitor applications while meeting system availability objectives.
• Interact with business users on day-to-day operational issues and collaborate with the Treasury Projects team on new developments.
• Establish development standards and engineering best practices, ensuring their adoption by delivery teams.
• Mentor, coach, and guide developers and junior architects throughout the project lifecycle.
• Integrate security requirements (Cybersecurity, GDPR) from the design phase onward ("Security by Design").
• Map existing legacy systems and design migration roadmaps toward new solutions.
• Simplify and communicate complex technical concepts to business management and stakeholders.

Candidate Profile :

A multidisciplinary expertise combined with a high level of autonomy is essential. 

• Engineering degree or Master's degree (Master's level) in Computer Science or a related field. 
• Minimum of 8 to 10 years of experience in software development and solution design, including at least 4 years as a Solutions Architect. 
• More than 5 years of experience in the technical management of a cash management and/or capital markets solution is required, along with a solid understanding of business processes (financial transaction lifecycle through payment generation and accounting). Knowledge of one or more of the following solutions would be considered a strong advantage: KTP (Finastra), TRAX (FIS), Calypso (NASDAQ), Diapason. 
• Previous experience in the FinTech sector, with a Treasury Management System (TMS) software vendor, or within the Financial IT department of a large multinational organization is highly desirable

Required Skills

• Deep expertise in Java (recent versions), the Spring Boot framework (Spring Data, Spring Security), and containerization on Microsoft Azure (AKS, Azure Functions, API Management).
• Excellent knowledge of Oracle databases (SQL, PL/SQL, advanced optimization of complex queries, and real-time transactional data processing).
• Strong understanding of DevOps practices, CI/CD pipelines, and container technologies (Docker, Kubernetes).
• Proven experience designing microservices, event-driven architectures (Service Bus/Kafka), and secure APIs.
• Development and architecture experience in a complex financial environment, with knowledge of FX derivatives, commodities, and interest-rate derivatives products.
• Good understanding of corporate treasury operations, financial messaging standards (ISO 20022, MT/MX), and banking connectivity.
• Solid experience in designing and building business-oriented reporting solutions.

Professional Qualities

• Excellent written and verbal communication skills in both French and English.
• Strong analytical mindset and a problem-solving approach to complex challenges.
• Strategic vision combined with strong pragmatic attention to detail.
• Ability to build relationships at all levels of the organization, influence functional teams, and work effectively across multicultural environments.
• Strong teamwork and collaboration skills with business and customer service orientation.
• Demonstrated ability to engage delivery teams and communicate complex architectural topics in a clear and accessible manner to Finance leadership.

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