Walid YAICH

For the client RENAULT GROUP : Maintenance and administration of Renault's Self managed applications like Gitlab, Sonar, gitlabrunner... Migrate some applications from AWS to GCP. Architect, implement, and optimize CI/CD pipelines on Gitlab. writing infrastructure as code, ensuring scalability, performance, and reliability across our cloud-based systems(AWS and GCP). Performance tests on Gitlab using GPT: - Write GitlabCI to : inject test data, cleanup test data, run perf tests. - write technical docs. - add specific runner for perf tests (using ansible and terraform) - Analyse logs on ElasticSearch to calculate real load on our PRODUCTION. Migrate Data from EFS (15 Tera Bytes) to S3 Object Storage(a gitlab recommandation) : - Read Gitlab Open Source code, and, develop multi-threaded Ruby script to move Data (many Tera) quickly. - Automate rails script using GitlabCI. Add Smoke tests(using python) for our Self managed Gitlab by adding : - Automatic project creation, automatic CI run and creation of artifact of 1GB. - Automatic creation and push of LFS Objects. Create scripts with multi-threading programming to scan more than 80 TB of artifacts for integrity check. Migrate terraform code from version 0.11 to 0.15. Resolve critical issues on PRODUCTION (EXP : cannot build java projects anymore, HTTP 500 Errors...) Keywords : AWS, GCP Terraform, Ansible, python, Jinja2, Ruby, git, Gitlab, GitlabCI, docker, OpenDistro for ElasticSearch.

My mission is about bringing to life a new SAAS product to the market(Restaurants) using AWS and devops practices. As DEV : make the application cloud ready : - Install locally the development environment. - Change API routing SecurityConfig.java to be generic, so it can run using AWS ALB. - run the application using environment variables, so no need to recompile for each environment (Integration, UAT, PROD ...). - Roll and store logs in S3 (https://github.com/link-nv/logback-s3-rolling-policy). - Add a logback configuration to notify at realtime dev team by email when an error occur in production. - Report technical bugs and ask the dev team some new features to make logging/monitoring easy and better. - Configure and install SpringBootAdmin for monitoring. As OPS : - Architecture Administer the company's AWS Account (IAM, roles and policies). Set up VPC, subnets, EC2 instances in HA, RDS, S3 EFS, in AWS cloud for Paris region. Implement and test High availilbility and scalability (working on 3 AZs) - Security : Carry out Security best practices, AWS WAF, VPN, trafic monitoring using ElasticSearch, use SSL restricted confguration for HTTPS, use restricted SecurityGroup... - Monitoring : Create Kibana Charts for VPC flow logs, Cloudtrail logs and WAF logs analysis using ElasticSearch Service. - Cost : monitor the billing, Lambda to stop/start EC2 instances daily to save cost... - Sharing : Draw.io and Kazam (video recorder) - Automation : CI / CD pipelines using jenkins. - Backup : packages versions, dumps, logs .. in S3 As Trainer / Manager : - Build a team of 4 persons and ensure that they are well trained to be autonous for maintaining and progressing the whole system built on AWS. - Work in collaboration with DEV Team, QA Team, Product Owner and managers. - Reporting to chief executive.

Teaching 4th and 5th year classes (engineering degree) : - Active Pedagogy Practice with Project-oriented studies. - Propose projects and deliver solutions on github/Gitlab. - Help students while coding . - Focus on best coding practice to prepare students to the real life. - Supervise students in their graduation project. - Supervise students in their 4th year development project (PI/PDEV). - Supervise students in their 4th year cloud project (PI PAAS SAAS). - Prepare exams and deliver solution on GitHub/GitLab. - Prepare a new program planning for Spring module. - Prepare course materials and share it with all ESPRIT students and teachers. - Keep and update a Continuous Improvement Plan for courses material and teaching pedagogy. - Help new teachers to prepare courses. R&D (Research and Development) activities : - Building devops toolchain on the cloud Amazon AWS. Architecture and development activities for DSI (Information system division) : - Defining software et technical architecture for new products. - Fixing bugs. - Coaching developers.

Project: Sales tool called <Nomadis/Socle RCD> for the new Orange Smartstores, compatible PC and tablet to serve 10K users (Gold SLA). Some tasks : - Participate to software and infrastructure architecture workshops. - Troubleshoot issues related to firewalls, proxies, network flows, load balancers... while deploying the application on the Greenwich Datacenter.. - Build the continuous integration process from scratch, install Jenkins Slaves and Master on a highly secured Zone. use of Sonar, Git, Gitflow, and plugins like ZAP and Selenium. - Create jenkins jobs and install ssh keys for continuous deployment. - Create architecture diagrams to explain devops process and differents related issues. - Build Dashboard to display all project KPIs for managers using ElasticSearch and Kibana. - Prepare test cases for performance tests. - Study of microservices. - Participate to development using java spring 4 ==> Split the monolithic Java backend into loosely coupled APIs. - Configure Nginx as a web server, loadbalancer and proxy. - Use of Docker to make prototypes (Basic knowledge) - Maintain the application POC on the cloud “OpenShift V2”. - Develop Unit tests using mockito(Basic knowledge) - Maintain SOAPUI mock services. - Write technical documentation and create architecture diagrams to simplify concepts. - Debug critical issues on production. Keywords: Java, Sonar, jenkins, Maven, Eclipse, tomcat, métrologie, Git, Mingle, Docker, Spring, Xmind, Quality center, API, WebService, microservices, SOAPUI, Devops, agile, Redhat 6.6, Ubuntu, SSH, VirtualBox, Nginx, ElasticSearch Kibana, Spring-boot.

Project: Financial software package Team : System architecture - Setup the software on different platforms respecting the architecture document. - Discuss with clients (banks in Asia and Europe) the deployment architecture diagrams to ensure high availability and fault-tolerance. - Maintenance of different applications and focus on performance and security. - Coach of trainees using top technologies. - Code some POCs to prove concepts to managers. - Contribution to pre-sales by participating to workshop with prospects. - Design and development of an application to route SWIFTs for validation. Keywords : Java, Sonar, Eclipse, Jboss 6, high availibility, DRAWIO, XWIKI, SWIFT, JMS, Webservices, MQ, Sizing, benchmarking, debugging, JMeter, Redhat 6.3.

Project : Tool for cryptographic keys exchange and deployment Context : Urbanization of PMU Information system Position : Java/C++ developer Team : Technical architecture division Main tasks : - Explore the target infrastructure: RabbitMQ server, AMQP, homemade protocol and the need for cryptography. - Secure cryptographic keys using Hardware IDs brought by WMI and IOCLT. - Understand and implement specifications delivered by a cryptography expert using ECC, AES, HMAC, ECDSA implemented by OpenSSL. - Develop the key tool in C/C++ to be deployed on windows xp and redhat 5. - Writing technical documents to explain necessary cryptographic keys exchange before connection establishment. - Stress tests on 8 Blade servers to reach 24 000 msg/second. Project: Custom “Digital right management” solution. Context: Secure music on internet for a specific DJ. Position : C++/Qt Developer and Team leader Main tasks : - Design and coding of the GUI in Qt (MVC pattern applied) - Integration of GSOAP for webservices calls. - Integration of PHONON for music play. - Use of two cryptographic algorithm AES et RSA. - Use of QCA for security module - Compilation and use of TagLib to edit ID3 Tag of mp3 files. - Prepare test scenarios from UML use cases. - Create an installation wizard using Inno Setup. - Write of technical documents to compile, deploy and use the application. - Test of webservices using SOAPUI. Project : Information system of Foncia Position : Java EE developer Main tasks : - Take in charge “Mantis” tickets describing the bug or enhancement to develop. - Maintain view, model and controller layers. - Create AJAX requests for autorefresh. - Create server side webservices using spring cxf using tomcat. - Create webservice consumers using httpclient - Create POCs using jsf 2, spring 3 et primefaces to have better performance with Alfresco (Document management System).