C# Developer – Monétique & Réseaux de Paiement

Responsibilities

• Analyze functional and technical requirements related to electronic payment processing
• Design and develop application components using C# and .NET
• Contribute to the evolution of middleware layers for payment network exchanges (Mastercard, Visa, CB, etc.)
• Maintain and evolve communication interfaces with banking partners and internal systems
• Implement unit and integration tests to ensure high availability and security
• Monitor and resolve production incidents in high-volume transactional environments
• Participate in continuous improvement and industrialization activities within an Agile framework

Requirements

• Bac+3 to Bac+5 degree in Computer Science or a related field
• Minimum 5 years of professional experience in C#/.NET development
• Mastery of object-oriented programming and application architecture
• Proven experience working in transactional or highly integrated environments
• Strong SQL skills and experience with performance optimization
• Ability to work autonomously and rigorously in high-criticality environments

Preferred Qualifications

• Experience in electronic payments, monetics, or interbank exchanges
• Proficiency in C for middleware development and communication protocols
• Knowledge of Linux environments
• Familiarity with DevOps practices and CI/CD pipelines

Benefits

• Competitive salary (40 - 50 K€ / year)
• Long-term missions in stimulating technical environments
• Personalized professional development and training
• Friendly company culture with regular afterworks
• Comprehensive health insurance (mutuelle) for you and your family
• Flexible meal management and professional status under the SYNTEC convention

About the Company

CITECH is a human-centric IT services company driven by benevolence, excellence, and a spirit of conquest. We support major corporate clients in strategic IT projects involving application development, infrastructure, cloud, data, and software industrialization.