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Saifeddine Rajhi

Senior Data Platform/SRE Engineer

Contact

  • 📅 30 years old
  • 📧  rajhiseif@gmail.com
  • 📞 +31 06 43 28 32 01
  • 📍 Hengelosestraat 32-404, 7514 AH Enschede, Netherlands

Soft Skills

  • Aspiring problem solver & passionate DevOps Engineer with a proactive approach to challenges
  • 7+ years of experience in cloud computing
  • 5+ years of experience in automation and containers
  • Expertise in a broad variety of technical, business, and management topics
  • Constant, quick & avid learner
  • Lifelong learner with a keen interest in staying updated with the latest industry trends and technologies
  • Positive and collaborative attitude
  • Platform Engineering: Platform Engineering: Skilled in creating, enhancing, and supporting scalable and reliable platforms, with a strong emphasis on automation, infrastructure as code, and cloud-native technologies
  • Management: Leading Scrum Teams, Product Owning, Problem Framing, Developer Mentoring, Giving Workshops

Technical Skills

  • Experience: Infrastructure as code, container technologies, automation, GitOps, AWS cloud, CI/CD pipelines, platform & site reliability engineering
  • Languages: Python, Golang, Shell
  • IAC Tools: Terraform, CloudFormation, Crossplane, Ansible
  • Containerization: Docker, Kubernetes, cri-o
  • DevOps & Cloud: Docker, Skaffold, Containers, Jenkins, Git, Ansible, AWS, Kubernetes, EKS, Atlantis, Vault, Consul, Packer, Serverless, Sonar, Dapr, Backstage, IDP
  • Web Development: HTML5, JavaScript
  • Software Development: C/C++, Python, GoLang, PL/SQL, Shell
  • Database: SQL/MySQL, Oracle, MongoDB, RDS, Aurora
  • Operating Systems: Linux Red Hat, Ubuntu, Mint, CentOS, Alpine
  • Virtualization: AWS, VMware vSphere, Hyper-V, Docker, OpenShift
  • Methodologies: Agile Scrum, Kanban
  • CI/CD and IAC: Jenkins, Nexus, GitLab, Docker, Ansible, Puppet, Helm, Helmfile, Kustomize, Crossplane, Terraform, OpenTofu, Terragrunt (DRY IAC)
  • Service Mesh: Istio, Cilium, Linkerd
  • API Gateway: Kong, Apigee, AWS API Gateway
  • GitOps: ArgoCD, Flux, Jenkins X, Tekton, Spinnaker
  • Software: Apache Httpd, NGINX, HA proxy, Postfix, iptables, Tomcat, Eclipse, IntelliJ, VS Code, Maven
  • Monitoring and Logging: DataDog, Splunk, Prometheus, Grafana, ELK Stack, APM Thanos, OpenTelemetry, CloudWatch, Nagios, Zabbix
  • Directories: OpenLDAP, Active Directory
  • Storage: NAS (NFS, CIFS), SAN (iSCSI), EFS

Work Experience

  • Senior Platform Engineer, JustEat Takeaway.com; Enschede, Netherlands — April 2023 – June 2024
    Have been working on infrastructure optimization and application deployment in Amazon EKS (Elastic Kubernetes Service), ensuring high availability and performance:
    • Monitored the maintenance and optimization of the site's infrastructure to ensure high availability and performance
    • Implemented and provisioned infrastructure in EKS to support the deployment of applications
    • Enforced standardized deployment practices, following a golden path approach for consistency and efficiency
    • Conducted system upgrades and ensured seamless integration of new features to enhance platform reliability
    • Actively participated in on-call rotations, responding promptly to incidents and ensuring system stability
    • Collaborated with cross-functional teams to address technical challenges and enhance overall system efficiency
    • Ensured our clients' workloads are optimized for cost, security, performance, reliability, and sustainability
    • Installed and configured the integration and production environment on AWS
    • Experience: AWS, GIT, Python, Terragrunt, Atlantis, Docker, Helm, Kubernetes, Terraform, DataDog
  • Senior Site Reliability Engineer, Storm Reply; Paris, France — August 2022 – March 2023
    Have been working on migrating and optimizing clients' workloads to AWS and managing CI/CD pipelines:
    • Migrated our clients’ workloads to the AWS cloud as an AWS partner
    • Assisted clients with the process of portfolio analysis to estimate migration costs and create a TCO analysis
    • Managed the CI/CD pipelines using Jenkins and other tools
    • Managed automation pipelines using Terraform, Jenkins, and CloudFormation
    • Managed AWS accounts via Control Tower and Organizations
    • Ensured our clients' workloads are optimized for cost, security, performance, reliability, and sustainability
    • Installed and configured the integration and production environment on AWS
    • Experience: Linux, AWS, GitOps, Python, Jenkins, Inspec, Docker, Oracle, Cassandra, Kubernetes, Terraform
  • DevOps Engineer, Michelin; Paris, France — June 2020 – August 2022
    Have been working on managing CI/CD pipelines and automating infrastructure on AWS:
    • Managed the CI/CD pipelines using Jenkins and other tools
    • Installed and configured the acceptance environment
    • Processed Prod / Pre-Prod incidents and monitored daily processing
    • Automated the infrastructure using Terraform and CloudFormation
    • Monitored, surveilled, and centralized logs via the ELK stack
    • Administered the system, ensuring smooth operations
    • Installed the production environment on AWS cloud using Terraform and CloudFormation
    • Configured platforms and servers via Ansible and Chef
    • Conducted real-time monitoring using Kibana and Grafana
    • Experience: Linux, Grafana, GIT, Python, Jenkins, AWS, Docker, Oracle, Maven, Sonarqube, Terraform
  • DevOps/Cloud Engineer, System-Dynamics; Paris, France — January 2020 to May 2020
    Have been working on implementing and managing server configurations and system deployment:
    • Implemented Puppet (installation, configuration, management of facts, templates) for server configurations
    • Managed system deployment via Terraform (architecture creation and management in AWS)
    • Automated deployment with tools such as Git, Jenkins, Gitlab (CI/CD), and Docker
    • Documented the solutions put in place
    • Served as a Linux/DevOps trainer
    • Experience: Jenkins, Linux (Debian), AWS, Docker, Puppet, Terraform, GIT, Python, Perl, LDAP
  • Integration and System Engineer, SOFRECOM; Tunis, Tunisia — August 2018 - December 2019
    Have been working on updating technical documentation, configuring systems, and supporting Orange subsidiaries:
    • Updated operational technical documentation (diagrams, operating modes, etc.)
    • Configured monitoring metrics
    • Made the requests to open the necessary flows
    • Created and managed system files (ext4, xfs, LVM)
    • Maintained and executed the Disaster Recovery Plan (DRP)
    • Managed systems and provided support for Orange subsidiaries
    • Trained and supported technical support teams during production implementation
    • Experience: Linux, Grafana, Cloud, Load Balancer (HAProxy, Nginx), MySQL, Python, Docker, Ansible
  • Java/Angular Development Engineer, SOFRECOM; Tunis, Tunisia — June 2017 - July 2018
    Worked on developing a platform to manage the training catalog, session plans, and analyze indicators after training monitoring:
    • Developed and maintained the platform using Java and Angular 4
    • Utilized technologies like NodeJS, ExpressJS, and MongoDB for backend development
    • Integrated Hibernate and Spring BOOT for enhanced application performance and management
    • Worked with MySQL for database management and operations
    • Ensured seamless operation on Linux RedHat environment
    • Experience: Linux RedHat, NodeJS, ExpressJS, MongoDB, Angular 4, Hibernate, Spring BOOT, MySQL

Communication & Leadership

  • Technical Leadership of Software Engineering Team (3.5 years)
    Led cross-functional teams of different sizes (5-15 people incl. SEs, QA, PM, DevOps). Organized and optimized team processes.
    Took part in presentations and frequent calls with clients, project groomings, and delivered internal technical workshops. Advocated software engineer's needs behind C-level management.
  • Organized technical and business newsletter (led for 2 years)
  • Write technical blog posts and thoughts about management

Hobby & Interests