Sedrel Lenioy D. Sedon
Systems Administrator · Linux, Windows & Cloud
3+ years in IT, the last 2 running live game infrastructure: monitoring 30+ servers, centralized logging, automated patching, and backups with offsite recovery. Based in Cebu, open to work.
01 Professional Summary
Systems Administrator with 3+ years of IT experience across Windows and Linux, including 2 years running live game infrastructure and monitoring 30+ servers with Prometheus, Grafana and Alertmanager. Centralized game logs with Graylog and automated patching and backups with Ansible, Bash and PowerShell. Skilled in FortiGate firewalls and VLANs, hybrid identity (Entra ID, Active Directory, SAML/SSO) and Microsoft 365 administration, with cloud experience on AWS and GCP.
02 Core Skills
Automation & DevOps
Monitoring & Database
OS & Subsystems
Identity & Access
Cloud & Virtualization
Network & Security
Ticketing & Collaboration
03 Professional Experience
Systems Administrator
Gamigo Philippines, Inc. · IT Support team
Nov 2024 — Oct 2026
Cebu City, Philippines
Monitoring & Logging
- Owned the Prometheus, Grafana and Alertmanager stack monitoring 30+ servers, including game servers, databases, containers and backup jobs.
- Wrote alert rules for CCU, RAM, disk and database connector usage with 80% thresholds, scoped per region (EU, SA, SEA, NA), with Teams notifications through a Power Automate webhook.
- Built a Linux server dashboard in Grafana modeled on the default Windows dashboard, and wrote a cron-based script that exports container status as Prometheus metrics, with a second script checking that the cron job ran.
- Deployed Graylog with Filebeat to collect 15+ game log sources across the game, lobby and database servers, so the Poland teams could investigate issues without direct server access.
Automation & Backups
- Automated patching of 10 Linux servers with Ansible, run through AWX (on k3s) and Semaphore.
- Used Jenkins freestyle jobs to start up and patch application-level services on game servers.
- Took the initiative to design a database backup process: a dedicated replica server handles backups so the production primary isn’t loaded. Bash scripts back up 3 databases from the replica (3-day local retention) and upload copies to GCP Cloud Storage (7-day retention) using a service account; a PowerShell script backs up the ~700 GB game build server to a GCP bucket. Used the GCP copy to restore the production database after a failed patching attempt.
Networking & Identity
- Administered FortiGate firewalls (virtual and physical): policies, VLANs and VPN access, including fixing missing subnets and SSO/access groups. Aligned Proxmox VLANs with FortiGate and managed GCP VPC firewall rules.
- Configured SAML/SSO integrations and managed Entra ID (app registrations, groups, device sync) alongside on-prem AD and ADManager for account lifecycle.
- Administered Microsoft 365: user and license management, Exchange shared mailboxes, delegate permissions and distribution lists, SharePoint groups, users and site storage, and Intune compliance with Autopilot enrollment.
Infrastructure & Collaboration
- Provisioned servers on OVH, Proxmox and GCP for the game and operations teams, and helped set up infrastructure for a newly acquired game title.
- Built Nextcloud for the Fiesta team with documentation, plus FTP servers and NGINX reverse proxies with automated Let’s Encrypt SSL.
- Worked with the Germany and Poland engineering teams, administered Jira, and trained the PH IT team on Grafana, Ansible and Nextcloud.
Cloud Support Engineer
Medspecialized, Inc.
Mar 2023 — Sep 2023
Cebu City, Philippines
- For each new client, reviewed their RAM and CPU requirements, compared EC2 instance types and pricing, and deployed the Windows Server instance with Elastic IPs and security groups.
- Joined each instance to the domain, installed Remote Desktop Services, created users and groups, and applied Group Policy Objects per client requirements.
- Wrote a PowerShell script to automate that setup where no automation existed: renaming the host, initializing disks, setting the DNS server IP, joining the domain, enabling remote access, installing applications from a remote drive, creating users and groups, and applying GPOs.
- Administered Windows Server 2019/2022 for a healthcare SaaS platform serving 200+ clinics and hospitals: Active Directory, DNS, DHCP, IIS with SSL, Remote Desktop Gateway, DFS and Certificate Services, plus patching and event log analysis.
- Managed AWS networking with VPC peering and Transit Gateway to connect cloud servers with on-premise domain controllers, and configured IAM roles, permission boundaries and SCPs. Monitored resources with CloudWatch.
Technical Consultant
Azpired, Inc.
Nov 2021 — Jul 2022
Cebu City, Philippines
- Installed, configured and tested software across server and workstation environments, and trained end users on software use and best practices.
- Diagnosed and resolved technical issues remotely and on-site, configured and troubleshot Windows Server environments, and provided basic SQL database support.
04 Projects & Case Studies
Database Backup & Disaster Recovery
Bash · PowerShell · GCP Cloud Storage
- Goal: take backups of a live game database without loading the production server, and keep offsite copies.
- What I built: a dedicated replica that handles backups; Bash scripts for 3 databases with 3-day local retention; a separate upload script to GCP with 7-day retention; a PowerShell backup of the ~700 GB build server.
- Result: after a failed patching attempt caused about 30 minutes of downtime, I restored the production database from the GCP copy and service recovered.
Centralized Game Logging
Graylog · Filebeat · Docker Compose
- Goal: let the Poland dev teams investigate game issues without direct server access.
- What I built: Graylog on Docker Compose, with Filebeat shipping 15+ game log sources from the game, lobby and database servers.
- Result: developers search and retrieve logs themselves; I walked the teams through usage and troubleshooting.
Monitoring & Alerting
Prometheus · Grafana · Alertmanager
- Goal: clear visibility and fast downtime alerts across 30+ servers.
- What I built: per-region alert rules (CCU, RAM, disk, DB connector at 80%), Teams notifications through a Power Automate webhook, a Linux dashboard, and container-status metrics from a cron script.
- Result: the team gets alerted when a service goes down instead of finding out from users.
Self-Hosted Portfolio
GCP · Docker Compose · Caddy · NGINX
- Deployed this site on a GCP VM with Docker Compose: Caddy as the edge reverse proxy with automatic HTTPS, forwarding to an NGINX container serving the static site.
05 Education
Bachelor of Science in Information Technology
College of Technological Sciences — Cebu · Undergraduate