Engineering Manager · Hana System Limited · Jan 2020 — Apr 2026
Reliable operations: virtualisation, Kubernetes, backups and recovery
Infrastructure and operations practices behind six years of continuous production operation with no unplanned outages.
Infrastructure
- Virtualised five physical servers on VMware vSphere.
- Deployed an on-premises Kubernetes cluster to containerise Redis and the observability stack (Prometheus, Grafana, Loki), removing scheduled downtime during deployments.
Resilience and security
- Established daily SQL Server Agent backups and disaster-recovery documentation, and led monthly full-restore exercises.
- Owned application security review and vulnerability remediation.
- Instituted monthly technical debt sprints of three days.
Results
- Six years of continuous production operation with no unplanned outages.
- Diagnosed the root cause of one critical incident within eight hours and revised standard operating procedures to prevent recurrence.
StackVMware vSphere, Kubernetes, Redis, Prometheus, Grafana, Loki, SQL Server
More case studies
- Custom ERP for a bicycle manufacturer producing 200,000+ units a year
- Cross-location CI/CD for on-premises IIS applications
- Core banking transaction processing compliant with Bangladesh Bank regulations
- OCR and validation workflow for 10,000+ insurance claims a month
- Web-based microcredit management for microfinance institutions
- Back to selected work