Diagnosed and resolved critical failures in legacy proprietary logging and monitoring infrastructure for high-availability production systems. Implemented remediation using Linux system administration, Ansible automation, and rsync-based data synchronization. Delivered emergency troubleshooting for business-critical services under time pressure.

Provided technical leadership and mentorship to junior development team building greenfield Ruby on Rails/GraphQL platform. Application enabled building managers to deliver concierge services to tenants through modern web interface. Guided architectural decisions and development practices for scalable SaaS solution.

Led organizational transformation by converting and training two development teams in agile methodology. Implemented comprehensive CI/CD pipelines and executed service migration from legacy infrastructure to AWS. Delivered both cultural change management and technical infrastructure modernization across multiple development teams.

Designed and implemented repeatable automated deployment pipelines for online learning platform startup. Built reliable CI/CD infrastructure on AWS to support rapid product iteration and consistent releases. Established deployment automation foundation enabling startup to scale development velocity.

Conducted comprehensive technical and financial analysis of legacy multi-service application (20+ services) to evaluate AWS spot-pricing opportunities. Performed detailed simulations modeling cost savings versus interruption risks across various infrastructure combinations. Delivered evidence-based findings that challenged initial assumptions, demonstrating spot savings were insufficient given application constraints. Recommended and implemented simplified scheduling solution as cost-effective alternative.

Implemented comprehensive automated pipeline for security-hardened infrastructure. Built automated image creation system using Chef and Packer for consistent, secure deployments. Developed automated security auditing and compliance reporting against live infrastructure. Created modularized Terraform environment architecture for maximum reusability and maintainability across multiple projects.

Designed and implemented self-service infrastructure-on-demand platform to accelerate development team productivity. Built automated provisioning system enabling teams to rapidly spin up new services while enforcing organizational best practices. Integrated multi-technology stack to deliver consistent, compliant infrastructure. Reduced development friction through standardized, repeatable deployment patterns.

Served as DevOps specialist on cross-functional team developing greenfield cloud-based medical records system for General Practitioners. Managed infrastructure and security architecture for healthcare-compliant AWS environment. Adapted infrastructure to support architectural pivot from hybrid Angular application to full SPA implementation. Specialized in healthcare data security requirements and regulatory compliance constraints.

Led DevOps implementation for Ministry of Manpower online work permit application platform. Collaborated with large multi-agency team and traditional infrastructure specialists to modernize deployment processes within high-security government datacenter. Introduced automation and repeatable build systems while navigating strict security restrictions. Significantly reduced deployment time and improved reliability through innovative solutions adapted to stringent compliance requirements.

Modernized deployment processes for custom private cloud infrastructure running on client-managed hardware. Introduced repeatable image building pipeline and automated deployment systems using VCloud Director orchestration. Transformed manual deployment workflows into standardized, automated processes. Delivered infrastructure automation for hybrid cloud environment with on-premises hardware constraints.

Implemented enterprise-scale self-service infrastructure provisioning platform for large organization with limited development team DevOps expertise. Built comprehensive automated provisioning system spanning AWS and VSphere hybrid environments using Puppet. Designed user-friendly interfaces and extensive documentation to enable less technical teams to safely provision infrastructure. Established governance controls and best practices enforcement for enterprise-scale self-service operations.

Contributed to ongoing development of Ruby on Rails application for government oil and gas safety regulator. Built reporting system enabling field safety officers to submit compliance reports with integrated feedback mechanisms. Implemented direct user-to-developer feedback channels within the application for rapid iteration and improvement. Delivered continuous enhancement based on real-time user input from regulatory field operations.