Am Services

Senior System Administrator (Remote)

Trapeze Group • Temps plein

Sep 2025 - Sep 2026 • 1 yr

Manage and maintain enterprise IT infrastructure across on-premises, cloud, and hybrid environments. Administer Microsoft 365, Azure, Active Directory, Entra ID, Exchange Online, SharePoint, Teams, and Intune. Manage VMware vSphere, ESXi, Hyper-V, Windows Server, Linux servers, storage systems, and backup solutions. Implement cybersecurity controls including MFA, Conditional Access, endpoint protection, vulnerability management, and security monitoring. Support enterprise applications including Jira, Confluence, Bamboo, Salesforce, and other business-critical platforms. Plan and execute server, application, and user migrations during mergers, acquisitions, and infrastructure modernization projects. Monitor infrastructure performance, troubleshoot complex technical issues, and ensure high availability of critical systems. Manage vendor relationships, licensing, IT procurement, and technology roadmaps.

Senior IT Specialist

Bonn Consulting UG • Temps plein

Jul 2021 - Dec 2024 • 3 yrs 5 mos

Led the design, deployment, and management of IT and network infrastructures for multiple clients across diverse industries for scalable, secure, and high-availability environments. Implemented containerized environments using Docker, Docker Compose, and Kubernetes. Automated infrastructure provisioning with Terraform, reducing manual processes and configuration drift. Developed configuration management scripts with Ansible, standardizing environment setup and reducing errors. Implemented and maintained robust CI/CD pipelines using Jenkins, GitLab CI, and GitHub actions. Designed and implemented a highly available and automated Kubernetes-based platform on AWS, supporting microservices and serverless workloads. Led performance monitoring initiatives to identify and resolve system bottlenecks by setting up Prometheus and Grafana dashboards, improving system uptime to 99.9%. Developed Bash, Python, and PowerShell scripts to automate routine administration tasks such as user provisioning, mailbox management, reporting, and infrastructure monitoring across hybrid environments.

Senior System & Network Engineer

Hedra Technology Consultants • Temps plein

Aug 2018 - Jul 2021 • 2 yrs 11 mos

Deployed and maintained network security infrastructures including Juniper SRX, Cisco Firepower/Secure Firewall, FortiGate, and pfSense to secure perimeter networks, enable site-to-site and remote-access VPNs, and enforce security policies. Designed and maintained high-availability switching and routing infrastructures using Juniper EX/QFX, Cisco Catalyst/Nexus/Meraki switches, and Juniper MX/Cisco ASR routers. Implemented MPLS, EVPN, and VXLAN overlays for scalable, resilient, and virtualized data center and WAN environments. Implemented Network Access Control (NAC) solutions such as Cisco ISE, Aruba ClearPass, and FortiNAC to enforce user/device authentication, posture checks, and access policies. Implemented high-performance wireless solutions using Cisco, Ruckus, Juniper Mist, and Fortinet WLAN platforms, enabling seamless mobility, guest access, and secure wireless segmentation. Deployed enterprise network monitoring and performance management using Junos Space, PRTG, SolarWinds, and WhatsUp Gold, ensuring high availability, fault detection, and SLA compliance. Developed comprehensive High-Level Designs (HLDs) and Low-Level Designs (LLDs) aligned with client requirements, translating business needs into scalable, secure, and high-performance network architectures. Automated network devices provisioning using Ansible, replacing manual configurations across 150+ nodes, resulting in 60% faster deployments and zero config drift. Provided architectural input and hands-on expertise for network design and infrastructure upgrades, including capacity planning, failover design, and migration to next-gen platforms. Authored and maintained detailed documentation for network topologies, configurations, change management, and disaster recovery procedures. Managed and administered Linux-based systems (Ubuntu, Debian, CentOS, RHEL), performing system updates, shell scripting, log analysis, and automation of routine tasks.