El hadj Arroyo

Engineered multiple Socket.IO gateways with JWT authentication, delivering secure, live updates to users across distinct domain areas, significantly enhancing real-time user interaction and data synchronization.

Architected and implemented a multi-channel notification system leveraging the Strategy pattern, featuring retry logic, exponential backoff, and DynamoDB persistence across WebSocket, Web Push, email, and SMS channels for reliable user communication.

Designed and evolved a robust relational PostgreSQL schema with TypeORM, overseeing 50+ incremental migrations without data loss and implementing explicit state machines for core domain workflows, ensuring data integrity and system scalability.

Integrated comprehensive Stripe Connect for payment and billing, managing payment intent lifecycles, secure deposit handling via state machines, SEPA recurring payments with retry logic, and idempotent webhook processing, supporting diverse invoice generation.

Managed and deployed scalable cloud infrastructure using Docker, ECR, ECS Fargate, and CloudFormation, ensuring high availability and performance for critical services including RDS, DynamoDB, ElastiCache, S3, ALB, Lambda, and SES.

Developed and launched custom websites and small web applications for diverse clients, translating complex requirements into intuitive user interfaces and functional digital solutions.

Managed end-to-end project lifecycles, including client consultation, UI/UX design, development, and deployment, ensuring timely delivery and client satisfaction.

Cultivated strong client relationships through effective communication and transparent project management, consistently delivering products that met specific business needs.

Gained foundational expertise in frontend development and version control best practices, ensuring robust and maintainable codebases for all projects.