Yacine Dabel

• Designed and implemented scalable REST APIs using FastAPI, with optimized database queries (PostgreSQL, MongoDB) and caching layers (Redis), reducing response times and improving system throughput.
• Developed and deployed a multi-tenant SaaS backend with advanced subscription and profile management, integrating LemonSqueezy and in-app purchases (IAP), which reduced churn and streamlined billing operations.
• Built robust background processing pipelines with Celery and RabbitMQ, enabling reliable task scheduling, retries, and automated profile deactivation on subscription changes, which improved system reliability.
• Integrated third-party services (Stripe, referral systems, LemonSqueezy webhooks) with full webhook handling, ensuring accurate subscription tracking and increasing payment success rates.
• Implemented database migration and schema management workflows with Alembic, ensuring smooth deployments and zero downtime during production updates.

• I designed and developed a mobile application using Flutter, allowing it to be deployed on both Android and iOS with a single codebase. This reduced development time by 50% and maintenance costs by 30%, facilitating a consistent user experience on both platforms.
• I integrated biometric authentication and data encryption, significantly improving the security of user data. This implementation resulted in a 40% increase in user trust and a 25% reduction in unauthorized access attempts.

handling diverse types of content, providing accurate and reliable document translation services in : Legal documents, Social and administrative texts , Scientific and academic materials and Subtitling and audiovisual translation