Zakaria Kebairia

• Modernized infrastructure by migrating legacy OVH/IONOS systems to a redesigned Hetzner-based architecture (Cloud + Bare-metal) with private vSwitch networks, VLANs, and Cloudflare DNS/WAF.
• Reduced infrastructure costs by 60% while improving overall performance, security, and maintainability.
• Built internal DevOps tooling in Golang (bacli) and standardized provisioning using Ansible roles and Terraform modules.
• Migrated GitLab 14.9.2 → 16.8.2 (LXC → Docker) for 160+ users and 288+ projects, with optimized CI/CD and automated backup routines.
• Cut backup/restore time by 78% by replacing rsync workflows with NFS-over-VPN pipelines and automated backups for PostgreSQL, MongoDB, MySQL, Redis, and ArangoDB.
• Built a unified observability stack (Prometheus, Grafana Alloy, Loki, Grafana) for node, application, VPN, DNS, traces, and container monitoring with structured alerting.
• Implemented multi-layer security (Hetzner firewalls, firewalld, SSH hardening, SELinux, Fail2ban, internal PKI).
• Designing the company's long-term platform roadmap, including Kubernetes adoption and Azure migration planned for 2026.

• Built Packer images for QEMU, AWS, and VMware and automated workflows with Bash for Namla.
• Managed AWS infrastructure using Terraform (VPCs, networking, EC2) and developed 50+ AppArmor profiles with systemd services to improve runtime security.
• Deployed a high-availability Kubernetes cluster (kubeadm, HAProxy, Keepalived) for APCS (Algerian Port Community System).
• Wrote 10+ Ansible playbooks and containerized a monolithic application into microservices using Dockerfiles and Kubernetes.

• Deployed OpenStack multiple times for a Network Functions Virtualization (NFV) project using OpenStack Tacker.
• Created shell scripts to automate deployment, monitoring, and user-experience-related tasks.
• Collaborated with engineers in team meetings to ensure project goals were met on time and within budget.

• Migrated 1k+ user accounts to Zimbra mail platforms using Python and Bash scripts.
• Installed, configured, and enhanced Linux servers, virtualization platforms (RHV, Proxmox), cloud environments (OpenStack), containerized infrastructures (Kubernetes, Docker, Podman, LXD), and storage solutions (GlusterFS, Ceph, NFS, iSCSI).
• Resolved client tickets, provided architectural guidance for resiliency and efficiency, and managed technical incidents.

• RedHat Certified System Administrator course — AlphaBit Club (2018–2019)
• RedHat Certified System Administrator course — Ingeniums Club (2019–2020)
• RedHat Special Course "Become a Linux expert" — AlphaBit's Cells Program (2020–2021)

• Designed and deployed a fully automated multi-layer infrastructure for a real-time suspicious behavior detection platform using Deep Learning.
• Used Edge, Fog, and Cloud computing paradigms to build a distributed infrastructure.
• Worked across DevOps phases including design, code, build, test, and monitoring.

Supervised by Pr. Rahmoun Abdellatif