Tan Si Kai

Software Quality Assurance

• Implemented shift-left quality engineering by developing 100+ comprehensive test suites to identify critical errors prior to deployment.
• Standardized bug-tracking workflows, reducing time-to-remediation by 15% and accelerating the overall deployment lifecycle.

Project Manager

• Architected technical specifications and compliance frameworks for national-scale infrastructure, ensuring 100% alignment with government regulatory standards.
• Defined a cost-optimized High Availability (HA) on-prem strategy for a national Scam Tracking System, utilizing a 1-Master/2-Slave application layer and synchronous DB replication to ensure 24/7 service for 60 government agencies.
• Provided technical consultation to government infrastructure teams, successfully pivoting from cloud to on-prem within tight timeline constraints while maintaining a 99.9% uptime design.
• Advised on a 'Lean HA' model (1 Master, 1 Slave for DB), which optimized project infrastructure cost while applying Multi-AZ resilience patterns and Synchronous DB replication, meeting all regulatory uptime requirements.
• Orchestrated the remediation of 100% of critical vulnerabilities identified during government-mandated penetration testing.
• Optimized the maintenance lifecycle of the Scam Tracking System by implementing an in-house ticket management system, resulting in 20% improvement in MTTR.
• Led technical demos and system rollouts for 60 government agencies, ensuring 100% user acceptance and successful production deployment.

Software Developer

• Developed and maintained internal APIs with other internal systems, which automated internal reporting tools that improved data accuracy, facilitating better decision-making for senior stakeholders.
• Developed and maintained an internal Quotation & Invoice system using PHP (Laravel) and JavaScript that managed a total RM800,000+ of the company's revenue.

Multi-Tier Cloud Architecture (AWS & Terraform): View on GitHub

• Multi-AZ 2-tier system with ALB for traffic distribution across ASG and RDS with synchronous replication for HA data persistence.
• Maintained 99.9% availability during Availability Zone failures while securing sensitive database workloads.

Serverless Cloud Resume Infrastructure (GitOps): View on GitHub

• Event-driven serverless pipeline using CloudFront for edge delivery, S3 for static hosting, and an API Gateway/Lambda/DynamoDB stack for dynamic visitor tracking.
• Built global, cost-optimized web presence that eliminates idle infrastructure expenses and automates the entire deployment lifecycle from code to edge.

Bachelor's Degree in Computing

Diploma in Internet Technology