Baptiste Massemin

Designed, developed, and maintained critical backend services running in distributed Kubernetes environments, handling up to 500k requests per second. Standardized internal Kafka client implementations with unified tracing and metrics, enabling centralized observability, transparent multi-region operations, and cross-team best practices. Collaborated with data and infrastructure teams to align needs and constraints. Participated in a demanding technical environment with thorough code reviews, advanced CI/CD workflows, and intensive monitoring.

Provided technical leadership on reward, challenge, achievement, and battle pass systems for major game franchises (Assassin's Creed, Far Cry, etc.). Developed microservices in ASP.NET Core, interconnected via RabbitMQ, sustaining loads up to 40k RPS with DynamoDB as the main NoSQL database. Designed scalable and resilient event-driven architectures. Coordinated with game play, QA, and product teams to ensure technical consistency and smooth functional integration.

Designed and evolved medical software in C# to manage radiology report workflows. Direct interactions with customers: requirement gathering, on-site installations, user training, and support. Implemented complex billing rules based on French medical insurance systems (CCAM, FSE). Integrated with hospital systems using HL7 and HPRIM standards.