Youssef Bushra Fouad

Skil-Dev, Cairo, Egypt

Backend services for a production multi-tenant SaaS platform, where domain services communicate asynchronously over RabbitMQ message patterns behind a single API gateway.

• Build backend services for a multi-tenant SaaS platform spanning roughly 40 service and frontend applications, across logistics and financial-operations domains.
• Contributed to the design and implementation of domain microservices in TypeScript, NestJS and Node.js, taking part in service decomposition, message contracts and inter-service communication patterns.
• Implemented event-driven asynchronous communication with RabbitMQ, using idempotent consumers so redelivered or retried messages cannot apply the same operation twice.
• Built tenant-scoped services in a multi-tenant architecture where per-tenant data isolation is enforced at the data-access layer and authorization is resolved centrally at the gateway against role-based policies.
• Designed and built integrations between Microsoft Dynamics 365 Finance, Odoo and custom third-party financial systems, synchronizing financial documents and postings through asynchronous, message-based flows.
• Modelled and evolved relational and document schemas across PostgreSQL and MongoDB, managing migrations with TypeORM to keep data consistent across independently deployed services.
• Used Redis caching and query optimization on read-heavy paths to reduce response times under load, and instrumented services with OpenTelemetry tracing and Grafana dashboards to shorten diagnosis of production issues.
• Built features in independently deployed Next.js micro-frontends composed behind a shared shell, shipped services as Docker images through GitHub Actions CI, and increased Jest coverage on backend logic.

Block Gemini, Dubai, UAE

Led geo-search optimization over a 10M-record dataset and built the logging pipeline the team monitored it with.

• Led the optimization of geo-location search over a 10-million-record dataset using Elasticsearch, achieving a 600 ms average query response time against a sub-1-second target.
• Designed RESTful APIs with NestJS, TypeORM and PostgreSQL, improving performance of complex data-retrieval operations, and used GraphQL with a Redis caching layer to streamline client-side querying.
• Implemented JWT authentication and role-based authorization across microservices, keeping access control consistent between services without sacrificing scalability.
• Built and maintained a centralized logging pipeline with Filebeat, Elasticsearch and Kibana for real-time log collection, monitoring and visualization, working with DevOps to integrate it into backend services.
• Documented APIs with Swagger, improving developer experience and reducing integration time for consuming teams.
• Contributed frontend features with Next.js 14 and Tailwind CSS and integrated them with the NestJS APIs, collaborating with a multi-national team across Dubai, India, Romania and Egypt.