Glenn Jonas Manalac

Marina Bay Sands Singapore (Information Services, Operations)

• Performed comprehensive post-patching checks to verify system stability, application functionality, and database integrity after scheduled updates.
• Ensured uninterrupted restoration of critical services following patch deployments, mitigating operational risks and preventing unscheduled downtime within a high-availability infrastructure.
• Collaborated with the infrastructure team to analyze patch outcomes and escalate anomalies for immediate resolution.
• Investigated and resolved issues arising from newly applied patches by reviewing error logs and tracing application behavior.
• Conducted root cause analysis (RCA) for patch-related incidents, documenting findings to enhance patching procedures and reduce reoccurrence.
• Maintained detailed records of patch validation procedures, post-patch reports, and issue resolutions to support audit and compliance checks.
• Ensured stringent compliance with internal controls, regulatory frameworks, and cybersecurity policies throughout all patch management activities
• Utilized ServiceNow to systematically track, prioritize, and resolve incident tickets, enhancing cross-team communication and operational transparency.
• Maintained detailed records of patch validation procedures, post-patch reports, and issue resolutions to support audit and compliance checks.
• Ensured all patch activities followed internal controls and met regulatory and cybersecurity standards.
• Oversaw application performance and system health monitoring via ITRS Geneos, proactively identifying anomalies and resolving issues to sustain operational stability.
• Employed ITRS Geneos to track real-time metrics and alerts for critical applications, improving incident response times.

The Development Bank of Singapore Limited (Finacle Interface Team)

• Developed and deployed enterprise-grade APIs to support digital transformation, using RESTful standards, OpenAPI, and Swagger.
• Managed enterprise component delivery using JIRA, Bitbucket, and Git across agile development pipelines.
• Designed and tested RESTful APIs using Swagger and Postman, validating functionality, payload structure, and endpoint behavior through sanity testing.
• Retrieved and manipulated data from Oracle databases using SQL queries to support backend processes and ensure data integrity.
• Monitored application performance and API behavior using Kibana and Grafana, proactively identifying issues and optimizing system reliability.
• Documented API specifications and system processes in Confluence to support team alignment and knowledge transfer.
• Collaborated with cross-functional teams including developers, QA, and DevOps to deliver robust, scalable solutions aligned with business objectives.
• Conducted in-depth analysis of API logs and system behavior to identify errors and perform root cause analysis across complex integration flows.
• Utilized JSONata for querying and transforming complex JSON structures within API payloads to support dynamic business logic and integrations.

• Adjusting design parameters(Electrical Schematic)
• Serving as subject matter expert on software related for both clients and internal team members.
• Incharge of T&C (Testing and Commissioning).
• Supported Engineering and Maintenance departments with training and technical support.Troubleshot, fixed and improved electrical controls.
• Uploading of PLC program into the systems.
• Ensuring IP addresses are in the right configuration for optimal communication.