System Engineer

Taught computer networking and telecommunications subjects on a part-time basis.

Developed curriculum and learning materials, guided student projects and research, and conducted student performance evaluations.

Lead a monitoring team of three members and support infrastructure and application operations to meet critical deadlines and a 98% SLA target. Handle support tickets, log incidents, escalate complex issues, and prepare internal and external application-status and maintenance reports.

Conduct root cause analysis, maintain knowledge-base documentation, and perform regular database and server checks. Implement observability using Grafana, Prometheus, Loki, and PromQL; monitor Kubernetes storage with Longhorn and Ceph; support SMKI and BSSN SPBE audits; and create technical presentations and POC demonstrations for tenders.

Created network acceptance and reliability tests for radar communications supporting the Indonesian Air Force. Ensured vendor solutions were implemented in the field according to specifications and agreed timelines.

Maintained servers to achieve SLA targets, tracked local and internet-scale network issues, and created technical documentation for knowledge management. Managed project-related letters and documents to ensure proper documentation.

Built and managed private server infrastructure to reduce costs associated with public-server hashrate fees.

Evaluated software and hardware options to reduce costs and improve mining-rig hashrate. Produced profitability analyses to identify the most profitable coins and operating configurations.

Installed and configured network equipment for farm and office environments, including device troubleshooting and operational support.

Monitored stale shares and resolved issues when stale-share rates reached 4% or higher, helping reduce rejected shares across mining rigs.

Completed network installations and scheduled maintenance for project sites, maintaining network uptime during business hours and resolving network issues within vendor and client SLA commitments.

Performed an IT infrastructure audit for the Banten provincial government, migrated designated Minerba servers with less than one day of downtime, and deployed new servers for Nurul Fikri Lembang with successful post-deployment testing.

Installed and maintained rackmount servers and required applications at project sites. Delivered infrastructure user training at Pelindo IV and supported acceptance testing and troubleshooting readiness.

Maintained the SportOnline application and database at PT JLJ, including regular backups and SLA-focused operations. Installed SAS VA infrastructure at SKK Migas, OJK, and Bank Papua, including SSO implementation when required.

Delivered productive networking and PC troubleshooting lessons to students.

Supported student assessment preparation and achieved at least an 80% student pass rate.