Sam BESSALAH

Convexant Ltd, is a technology consultancy company, helping clients across the EU and the U.S develop cutting edge data platforms and AI applications.

- Make the data platform compliant for GDPR regulation on privacy - Build a change data capture system, to capture all events from a legacy Postgres database, stream them into Kafka and serve them as data to different micro-services. Built the platform using Kafka-Connect, Debezium, Postgres Logical Decoding, Kubernetes, Prometheus - Design security and governance policies for the data platform on AWS. - Design the multi data center deployment, and the disaster recovery for the Kafka platform.

As a senior architect and tech lead, I helped design and implementing a new data platform for various use cases, and prepare a transition to a cloud environment for the company. Tech stack : Kafka / Confluent, Spark, Google Big Query, Apache Spark, Google Cloud Platform, Kubernetes, SBE, Kafka Streams, Kafka Connect.

As an architect and a developer, I helped build a platform ingesting and processing data fromfor all subsidiary of the French Postal Service. The platform was built on top Apache Mesos as a Cluster Manager, Apache Spark, the Confluent platform (Kafka, Kafka-connect) , Elasticsearch and many custom developments for insuring privacy and security for all the data on the platform.

Criteo is the leader in Display Advertising, specializing in retargeting and with a massive footprint in the real time bidding for ads. As a freelance, I did during multiple interventions train various teams within the company for Apache Spark. Helped design, tune and oversee the production of Data Processing pipelines for search based bidding. And the tuning of a port of a machine learning pipeline into Spark MLLib on Yarn.

Built an online advertising, real time bidding platform that handles pikes of 250K RPS. Designed and implemented the data platform underlying the decision making engine. Stack : Java, Netty, Couchbase, Elastic Search, Redis, Kafka, Spark, S3.

Distributed Systems