Yassine N.

Technical instructor in higher education (Bachelor's → Master's level). Full design of course materials, hands-on labs, and assessments: Kubernetes (K3d, RBAC, Ingress), Monitoring (Prometheus, Grafana, Loki, Alertmanager, Jaeger, ELK), AWS Cloud Security (IAM, VPC, KMS, Terraform), DevOps project mentoring.

CLIENT PROJECT : - IaC: Terraform (Proxmox provider), Ansible roles, cloud-init, ansible-vault for secrets. - Network security: SSH bastion (ProxyJump), nftables default-drop with IP whitelist, private subnet segmentation, Nginx reverse proxy + Let's Encrypt TLS. - Host hardening: SSH best-practices, fail2ban, unattended security upgrades, centralized authorized-keys via Ansible. - Observability: Prometheus, Grafana, Loki, Promtail, node_exporter — multi-VM scraping and dashboards. - Ops & delivery: Makefile-driven role-based deploys, incident runbooks (SSH-loss recovery via Proxmox API + qemu-agent). - Cross-stack troubleshooting: production bug resolution at the infra/app boundary. K3S SAAS PLATFORM - Bare-metal K3s cluster designed to host multiple SaaS projects GitOps: ArgoCD, SealedSecrets, encryption at rest, RBAC, NetworkPolicies. Observability: Prometheus, Grafana, Loki, Alertmanager, custom PrometheusRules, Discord alerting. Incident management: on-call rotations, runbooks, RCA, post-mortems. Day-2 ops: upgrades, certificate rotation, continuous deployments.

Monitoring using Prometheus and Grafana, performance tracking and alerting Backup strategy implementation and rollback testing Update and patch management to ensure security and system integrity Incident handling (Level 2 & 3 support), ticket management, and coordination with cross-functional teams Cloud resource deployment on Microsoft Azure – Virtual Machines, storage, disks, services Infrastructure provisioning using Infrastructure as Code (IaC) with Terraform and configuration management via Ansible Continuous improvement of operational processes and automation of routine tasks

Linux VM Configuration & Administration – Ubuntu 22.04, RHEL : Configuration and administration of Linux virtual machines (Ubuntu 22.04, RHEL), including troubleshooting and pre-deployment setup Automated deployment and integration of solutions using Ansible – OS updates, PostgreSQL database installations, and system configurations Containerization of applications using Docker – e.g., deployment of Postfix SMTP servers Database setup and configuration – PostgreSQL, including advanced setups using Repmgr, Patroni, and Keepalived for high availability and replication

Production Operations — 24/7 maintenance and monitoring of servers on critical financial infrastructure. L1 incident management: RHEL VM monitoring, CPU/RAM/Disk alerts, service restarts, log analysis, escalation to L2/L3. OpenShift cluster supervision. Database health checks: MySQL, PostgreSQL, MongoDB. Monitoring stack: Prometheus, Grafana, Zabbix, PagerDuty. Network: Cisco, CheckPoint. Virtualization: VMware, vSphere.