Mellekh Hedi

Context: Contribution to the B2C mobile application used by over 2 million customers worldwide, supporting TotalEnergies' transition to cleaner mobility and the management of its global electric vehicle charging network. • Role: Design and optimization of backend microservices (NestJS, PostgreSQL, RabbitMQ, AWS, Docker, Kubernetes) to secure global transaction flows, improve data consistency, enhance scalability via Docker/Kubernetes, and deliver new features in an Agile team. • Team: Agile environment, collaboration with product managers, designers, and developers for continuous improvement. • Technologies: NestJS, PostgreSQL, MongoDB, RabbitMQ, AWS (EC2, Lambda, S3, Cloudwatch), Docker, ELK, Kubernetes, Microservices (Hexagonal, DDD).

Context: Dormakaba is a global leader in intelligent and secure access solutions, managing access to buildings and rooms worldwide. • Role: Development of a global serverless IoT platform (AWS, MQTT) for Dormakaba, optimizing the ingestion and security of millions of real-time messages and enhancing the scalability of event-driven services. • Team: Agile environment, collaboration with engineers and product teams to improve IoT solutions. • Technologies: NodeJs/NestJs, PostgreSQL, MongoDB, AWS (EC2, Lambda, S3, Cloudwatch, SQS, IoT, API Gateway), MQTT, React, Serverless.

Context: Livin' leverages urban data to help cities optimize their infrastructure, reduce costs, and improve daily life by addressing issues such as air quality, traffic congestion, and parking. • Role: Design and improvement of ingestion pipelines to collect and normalize diverse urban data (sensors, IoT, APIs), implementation of event-driven microservices (Spring Boot, AWS) providing near real-time analysis of traffic, parking, and environment, and development of transformation workflows and visualization modules (Angular) to provide cities with reliable and actionable data. • Team: Agile environment, collaboration with data engineers, urban planners, and developers to design impactful solutions. • Technologies: NestJs, SpringBoot, PostgreSQL, MongoDB, RabbitMQ, AWS (EC2, Lambda, S3, Cloudwatch, API Gateway), Docker, ELK, Angular, Microservices (Hexagonal, DDD).