Hi, my name is

Julien.

I'm a Linux System Engineer

I’m a Linux and open-source enthusiast who enjoys turning complex infrastructure into simple, automated, and reproducible systems. Whether it’s provisioning servers with Terraform and Packer, automating deployments with Ansible and GitHub Actions, securing access with Vault and Tailscale, or improving observability, I like building reliable platforms that make operations easier. Always learning, always experimenting, and always looking for better open-source solutions.

About Me

I have a background in physics and R&D, with a strong interest in the intersection of technology, systems engineering, and applied automation. I am currently working as a System Engineer at IBA in Louvain-la-Neuve, where I design, implement, and operate enterprise IT infrastructure in a production environment, including regular on-call responsibilities (7 days per month) for incident response and service reliability.

My work focuses on building and evolving infrastructure toward a fully Infrastructure-as-Code model, using Ansible, Terraform, and Packer, integrated with GitHub CI/CD. This approach has significantly improved automation, reproducibility, and standardization across system deployments.

I am also involved in platform modernization and security initiatives, including the design of a cybersecurity-oriented infrastructure stack based on Proxmox as an alternative to VMware. This includes workload migration, centralized monitoring, log aggregation, and network segmentation using Tailscale to improve operational security and infrastructure visibility.

Technologies I have recently worked with include:

  • Infrastructure as Code: Ansible, AWX, Terraform, Packer, GitHub CI/CD
  • Virtualization: VMware, OpenStack, Proxmox
  • Security & Access: HashiCorp Vault, OpenSSH, Tailscale
  • Containers: Docker (Swarm)
  • Programming & Automation: Python, Bash
  • Monitoring & Observability: CheckMK, Icinga, Prometheus, Grafana, NRPE
  • Messaging & Data Systems: RabbitMQ, Cassandra, Redis
  • Storage: Ceph, Btrfs, ZFS

Career

Infrastructure Engineer - IBA
2024 - Present. Louvain-la-Neuve, Belgium.

Currently working as an Infrastructure Engineer at IBA in Louvain-la-Neuve, responsible for the design, implementation, and maintenance of the company’s IT infrastructure. Operating in a production environment with on-call responsibilities (7 days per month) to ensure service reliability and incident response.

Evolved the infrastructure toward a fully Infrastructure-as-Code approach using Ansible, Terraform and Packer, improving automation, Github CICD, reproducibility, and standardization of system deployments.

Leading initiatives around platform modernization and security, including the development of a cybersecurity-oriented infrastructure stack based on Proxmox as a VMware alternative. This includes workload migration, centralized monitoring, log collection, and network segmentation using Tailscale to improve security and operational control across environments.

System Engineer & Integrator - Thales
2015 - 2017. Tubize, Belgium.

Contributed to the design, integration, and validation of mission-critical telecommunications systems at Thales Communications. Led the implementation of a fully redundant monitoring infrastructure for the Belgian national paging network, providing comprehensive observability and fault detection capabilities.

Conducted Integration, Verification, Validation, and Qualification (IVVQ) activities for software and hardware platforms deployed across a nationwide infrastructure of more than 200 servers. Worked closely with engineering and operational teams to ensure system performance, reliability, and successful production deployments within a highly demanding environment.

System Administrator / DevOps Engineer - OVH Cloud
2017 - 2020. Montréal, Canada.

Managed and maintained large-scale VPS and Public Cloud platforms running on OVHcloud’s OpenStack infrastructure across multiple regions worldwide. Contributed to the reliability and performance of production environments through infrastructure maintenance, monitoring improvements, performance optimization, troubleshooting, and incident resolution.

Participated in the deployment and launch of new VPS regions, including Sydney and Singapore, helping expand the platform’s global footprint. Worked closely with development and operations teams to investigate issues, track bugs, and improve operational processes through ticketing and change management workflows.

Supported a 24/7 global operations model through follow-the-sun collaboration, rotating evening and night shifts, and regular on-call duties to ensure service availability and rapid incident response.

System Infrastructure Engineer - Bandwidth
2020 - 2024. Brussels, Belgium.

Managed and evolved large-scale virtualization and cloud infrastructure across multiple datacenters. Led OpenStack hypervisor expansion and platform upgrades, as well as Ceph cluster upgrades and capacity extensions to support growing workloads. Designed and deployed on-demand integration environments for development and testing teams.

Implemented and operated VMware infrastructure across multiple datacenters, including hypervisor deployment and migration projects from OpenStack to VMware. Deployed and maintained Red Hat Identity Management (IdM) services across the infrastructure to strengthen authentication and identity governance.

Contributed to disaster recovery initiatives through AWS-based DR platforms and ensured compliance with SOX and ISO 27001 requirements. Participated in on-call rotations and incident triage, supporting the reliability and availability of critical production systems.

Software Engineer - Cisco
2011 - 2013. Kortrijk, Belgium.
Developed and maintained automated testing frameworks in Python for video processing applications used in telecom and cable headends. Responsible for both manual and automated testing, including unit, integration, and regression tests. Designed tools to validate video quality and encoding parameters such as codec compliance, bitrate, resolution, and stream integrity, helping ensure reliable and consistent media delivery.

Education

2007 - 2008
Master's degree in Physical Science
Université Catholique de Louvain, Belgium
2003 - 2007
Licentiate in Physical Science
Université de Mons-Hainaut (UMons)
2008
Student exchange program ERASMUS
Vigo University, Spain.

Get in Touch

My inbox is always open. Whether you have a question or just want to say hi, I’ll try my best to get back to you!