Xendacine

Senior System Engineer

RH STUDIO • Vollzeit

Oct 2023 - Present • 2 yrs 9 mos

Senior System Engineer with 10+ years designing, securing and supporting IT environments for international businesses and home users across servers, endpoints, NAS and networks. Ensured secure, compliant IT operations for Office 365, Windows, Linux, macOS, AS400, iOS and SaaS platforms, aligned with frameworks such as HIPAA, SOC 2 and ISO. Managed core infrastructure and services including identity and access management with Active Directory, OKTA, JAMF and Apple Business Manager, standardizing user and device lifecycle, enforcing MFA and access controls, and hardening endpoints. Administered RingCentral VoIP environments, optimizing uptime, performance and call routing while maintaining encryption and role‑based access. Maintained resilient, secure networks using Mist, Meraki and CloudGenix, implementing segmentation, VPNs, policy‑based controls and traffic monitoring to reduce risk and improve reliability. Led patch management and vulnerability remediation programs across servers and clients, closing high‑risk findings and strengthening audit readiness. Handled complex incidents and service requests through ServiceNow, resolving issues efficiently while staying aligned with security and compliance requirements. Created clear documentation and automated repetitive workflows, improving response times, reducing manual work and increasing overall IT service quality for end users and stakeholders.

System engineer

Fujitsu • Vollzeit

Feb 2021 - Oct 2023 • 2 yrs 8 mos

Managed and maintained Fujitsu server environments with integrated Active Directory and Azure AD, ensuring secure user access, group policies and reliable directory synchronization across Windows and mixed‑OS landscapes. Oversaw core server and network operations including DFS, Windows Server, and client device management to keep business services stable and performant. Used TeamViewer and other remote tools to monitor and manage systems, resolving incidents quickly and minimizing downtime for end users. Administered websites and DNS, delivering fast, secure and reliable domain management for internal and external services. Managed backend Linux systems and SharePoint, providing robust access to shared resources and enabling smooth business collaboration. Integrated and optimized multifactor authentication across environments to harden sign‑ins and reduce unauthorized access risks. Configured and operated firewalls (Barracuda, Watchguard, SonicWall), VPNs and VLANs to secure the network perimeter, segment traffic and pre‑configure client devices to company standards. Supported Apple devices (iOS, iPadOS, macOS) alongside Windows clients, ensuring compatibility with enterprise services and resolving device issues efficiently. Worked with 3CX, camera systems, Synology and backup tools such as Macrium and Active Backup to improve resilience, disaster recovery and business continuity. Streamlined network architecture, monitoring and security measures, contributing to a robust, scalable infrastructure built on Fujitsu servers that supports evolving business needs.