About Karlken
Italian
Native or bilingual
English
Fluent
Filipino
Conversational
Experience
- Zerouno srlSysAdmin | DevOps Engineer ConsultantDIGITAL AND ITApril 2024 - Today (2 years and 2 months)Milan, Metropolitan City of Milan, Italy
- Designed, built, and managed infrastructure based on Docker Swarm and Docker Compose, covering production, test, and development environments.
- Implemented Traefik v3 for secure routing, reverse proxy, and TLS certificate management.
- Set up full monitoring and observability stacks with Grafana, Prometheus, Loki, and Alertmanager, integrating automated alerts (Telegram, email).
- Automated PostgreSQL and volume backups on Wasabi S3 with retention policies and tested disaster recovery plans.
- Optimized resources, decommissioned obsolete services, and improved system reliability. System Administration & Security
- Configured and maintained FortiGate firewalls: access rules, SSL/IPsec VPNs, DNS management, and network segmentation.
- Managed domains, SSL/TLS certificates, and hardened Nginx, Apache2, and Tomcat servers.
- Implemented high availability and disaster recovery strategies, including PostgreSQL replication and WAL archiving. IT Support & Operations
- Maintained and troubleshot Linux and Windows servers, ensuring secure updates and uptime.
- Provided tailored IT solutions and technical documentation for internal and client infrastructures.
- Expandi GroupTechnical Project Manager - Full Stack Developer - DevOps - IT ManagerOctober 2021 - April 2024 (2 years and 6 months)Milan, Metropolitan City of Milan, Italy
- Planned and coordinated projects, defining the technical roadmap and priorities.
- Led and supported developers across front-end and back-end, ensuring on-time feature delivery.
- Built and maintained internal Java web applications (Spring, Thymeleaf, HTML, JavaScript, CSS).
- Managed and customized the Salesforce CRM platform to optimize internal processes.
- Integrated Docker and Jenkins for continuous integration and deployment pipelines.
- Maintained Linux servers and handled IT infrastructure for stability and security.
- Expandi GroupFull Stack DeveloperSeptember 2019 - October 2021 (2 years and 1 month)Milan, Metropolitan City of Milan, Italy
- Developed and tested internal Java web applications with Spring, Thymeleaf, HTML, CSS, and JavaScript.
- Administered and customized the Salesforce CRM, ensuring smooth business workflows.
- Provided internal technical support and maintenance for company tools.
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