Sehanto
Tangerang Regency
Summary
Experienced Linux System Engineer with 10+ years of expertise in designing, implementing, and managing complex Linux-based infrastructure. Demonstrated skills in system architecture, automation, security, and performance optimization. Proven leadership in leading technical teams, collaborating with stakeholders, and driving innovation in challenging environments.
Overview
12
12
years of professional experience
Work History
Senior Server Specialist
PT Home Credit Indonesia
01.2020 - 08.2024
- Managed CyberArk PAM to secure privileged accounts and support PCI DSS compliance.
- Participated in PCI DSS audits and contributed to successful compliance efforts.
- Developed Ansible playbooks to automate vulnerability remediation based on VA scan reports.
- Implemented a data streaming platform using Kafka, ZooKeeper, and AKHQ.
- Built a highly available file transfer solution using SFTP, keepalived, and lsyncd.
- Managed the upgrade of RHEL systems from version 6 to 7 and migrated RHEL 7 systems to Oracle Linux 7.
- Utilized Confluence to create and maintain comprehensive system documentation.
- Actively participated in disaster recovery tests, contributing to business continuity planning.
System Administrator
PT Harbin Perkasa
09.2018 - 08.2019
- Managed a highly available Hyper-V environment (5+ hosts, 75+ VMs) to support critical business applications.
- Built high-performance web infrastructure using nginx with HAProxy as a reverse proxy and load balancer.
- Implemented MySQL Galera Clusters for high availability and scalability of critical databases.
- Configured secure and reliable email systems using Dovecot, Postfix, and Roundcube.
- Conducted security assessments and penetration testing using OWASP ZAP Proxy to identify and mitigate web application vulnerabilities.
System Engineer
PT DektopIP Teknologi Indonesia
07.2017 - 08.2018
- Managed virtualized infrastructures using KVM and LXC/LXD to host various applications and services.
- Implemented a highly available RD Connection Broker solution using HAProxy in an LXC/LXD environment.
- Deployed a highly available Samba 4 AD DC within an LXC/LXD container.
- Configured a highly available storage cluster using DRBD and OCFS2.
- Leveraged Docker containerization with Docker Swarm orchestration to modernize legacy applications.
System Engineer
PT Divatel Pratama
10.2014 - 06.2017
- Managed a VMware vSphere environment with 5+ ESXi hosts, providing a highly available platform for 75+ virtual machines.
- Implemented VoIP solutions using Elastix, including highly available configurations with DRBD for select clients.
- Configured MySQL replication (Master-Slave and Master-Master) to ensure high availability and data consistency for critical databases.
- Managed FreeNAS and GlusterFS storage solutions, providing centralized and secure file sharing and distributed storage.
- Implemented pfSense firewalls with OpenVPN to provide secure remote access and protect company resources.
IT Support Engineer
PT Jaring Synergi Mandiri
02.2013 - 08.2014
- Managed a highly available Proxmox VE cluster with 10 hosts and 150+ virtual machines.
- Implemented customized Elastix-based VoIP solutions for 30+ clients.
- Maintained Samba file servers for 200+ users.
Education
Bachelor of Computer Science - Informatics Engineering
STMIK Amikom Yogyakarta
Yogyakarta, Indonesia11-2012
Skills
- Operating systems: CentOS, RHEL, Oracle
- Automation: Bash, Ansible, Terraform
- Virtualization: VMware, Hyper-V, Xen
- Monitoring: Grafana, Prometheus, Loki
- Containerization: Docker, Kubernetes
- Databases: MySQL, PostgreSQL
- Access management: CyberArk PAM
- Message broker: Confluent Kafka
- Cloud platform: AWS
- Version control & CI/CD: Git, Jenkins
- Networking: TCP/IP, DHCP, DNS, VPN
- Storage: LVM, NAS, NFS, SMB, GlusterFS
Timeline
Senior Server Specialist
PT Home Credit Indonesia
01.2020 - 08.2024
System Administrator
PT Harbin Perkasa
09.2018 - 08.2019
System Engineer
PT DektopIP Teknologi Indonesia
07.2017 - 08.2018
System Engineer
PT Divatel Pratama
10.2014 - 06.2017
IT Support Engineer
PT Jaring Synergi Mandiri
02.2013 - 08.2014
Bachelor of Computer Science - Informatics Engineering
STMIK Amikom Yogyakarta
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