Mohamed Sahtali

Key Experience: Have set up the AWS Cloud in this company AWS Governance and Framework Implementation Implemented governance practices based on AWS best practices and the AWS Well-Architected Framework. Set up a landing zone for multiple AWS accounts. Data Platform Projects 2019: Designed and built a data lake using AWS S3, Glue, and Athena. 2019: Designed and built a common BI platform using Qlik Sense and NPrinting to meet business needs such as churn analysis and marketing campaign support. 2021: Implemented the Datagalaxy tool for data cataloging and compliance. 2022: Designed and built a Datalab platform for the data office using Dataiku, Redshift, S3, EKS, and Spark. 2024: Following the merger of Datalake, Common BI, and Data Office teams, designed a unified Datalakehouse platform using Databricks: Migrated applications from legacy data centers and OVH to AWS. Designed and implemented network connectivity between the data center and AWS (Direct Connect, Transit Gateway, DNS Resolver, Resource Access Manager). Website Migration Re-platformed the sites using AWS managed services (ECS, RDS, ALB, EFS, WAF). Cloud Application Design Designed over 30 cloud-based applications on AWS: 25 based on microservices using ECS and EKS clusters. FinOps Conducted monthly reporting for department heads on cloud costs and identified optimization opportunities to reduce expenses. Trained architects, project managers, and developers on FinOps practices. Implemented cost-saving measures such as Saving Plans, Enterprise Discount Plans (EDP), and reserved instance purchases. Incorporated forecasted running costs into architecture documentation. Centralized Logging and Portals Designed and built an OpenSearch/OpenDashboard backend for Lefebvre-Dalloz portals. Built a centralized logging system using OpenSearch, Kinesis Firehose, ingest pipelines, and Fluent Bit. E-Commerce Projects Designed and developed three e-commerce sites using Magento 2.

Key Responsibilities and Achievements Design/Development: Designed, defined, and built applications based on microservices architecture using ECS. Migration Projects: Migrated applications to AWS. SAP Migration Study: Conducted a study for migrating SAP HANA from an on-premises data center to AWS. Software Factory Design: Designed a software factory on AWS using tools like Jenkins, Jira, Confluence, GitLab, and more. Authorization Delegation: Implemented authorization delegation between Azure and AWS. SAS Projects: Validated technical solutions proposed by partners. Participated in request-for-proposal (RFP) processes. AWS Governance: Implemented AWS governance and landing zone setup based on AWS best practices and the AWS Well-Architected Framework. Recurring Activities FinOps (Cloud Financial Management): Managed FinOps processes for solutions, including estimating run costs. Mentorship: Served as a mentor for several junior architects. Architecture Committees: Actively participated in architecture committees.

Software Factory: AppFactory Designed the architecture for implementing a software factory to enable continuous integration using tools like JIRA, Jenkins, GitLab, and SonarQube on the Amazon Cloud (AWS). The platform was initially intended for developers working on mobile applications (iOS & Android). Move to AWS Cloud Conducted impact and architectural studies to migrate existing applications to the AWS cloud, following the IT department’s roadmap. Developed and implemented a catalog of architectural patterns. Intervention Management Application Modified the application’s architecture to: Add new data flows for external and internal partners. Use NFS exports on NAS to externalize attachments stored in Oracle databases (BLOBs). Implement a shared web service module to communicate with an external provider for mapping and route optimization. Authored detailed architecture documentation (DAT) and presented it at various architecture committees (ENEDIS + EDF). Source Post Management Simplified the architecture of an asset management application based on the MAXIMO software suite. Migrated Oracle databases to a database-as-a-service solution using Oracle GRID. Created retroactive documentation for the application. Mobility Manager Collaborated with the urban planner to define the architecture for a new HR application designed to update the skills and certifications of agents performing field interventions. Ensured the application’s compatibility with desktop and mobile devices. Leveraged the existing API and web service platform (Apigee) implemented for other applications. Recurring Activities Monitored the main orientations of the IT department, including open-source strategy and infrastructure rationalization. Ensured compliance with technical standards and the use of the IT operator’s service catalog. Provided technical support to application projects to define architectures suited to business needs.

Define and design architecture to address needs in the Health domain. Consultancy to improve the resilience and performance of internet site ( 24/7) throughout the industry knowledge and best practices. Consultancy to improve the performance , and the resilience of a bunch of Websphere Cells and the ability to deploy applications with service continuity.

Consulting to assist in the consolidation of database servers in multiple datacenters with Platspin

Define and design architectures to address client needs in various retail and infrastructure projects . Costing of solutions Support to change and delivery teams Participation in various committee ( architecture , design authority, cabs ..). Technology watch , Proof Of Concept, Prototyping. Define and participate in load testing ...

Participate in the definition and design architecture for a main virtualization project : Application virtualization with Xenapp and consolidation of servers with VMWARE