Implemented and collaborated on software solutions of the Amazon Elastic Compute Cloud (EC2) Image Builder service using Python, Java and TypeScript. Contributions included scoping, design, code, testing, documentation, and maintenance.Contributed to the development effort to implement a lifecycle management feature. This feature empowers customers with enhanced control of resources, driving cost reduction through automated deletion/deprecation rules on EC2 instances.Led the migration to the latest contract test program defined by AWS CloudFormation (CFN) – i.e. updating the adherence to CRUDL handler rules – ensuring the service’s provided resources are complying with the latest standards set by CFN Registry in all +30 AWS regions where the service is available.Carried out end-to-end implementation of an event-driven feature for managing pre-defined EC2 Image Builder image resources. This feature, leveraged by AWS DynamoDB storage for efficient retrieval and AWS Lambda Functions for serverless computing, optimizes back-end performance when customers request the usage of these pre-defined resources as parent images.Undertook recurring on-call duties, managing service operations and customer issues effectively. The on-call main responsibilities involved ticket handling, troubleshooting customer issues (through meetings, debug, and log analyses), and configuring/monitoring alarms on service availability and performance using AWS CloudWatch.Managed and sustained infrastructure as code using Amazon’s Cloud Development Kit (CDK).Reviewed code of other developers, contributing to the company’s and cross-team standard in Continuous Deployment.Adopted AWS Coral (internal tool) for setting up CI/CD pipelines and client enpoints of our APIs/microservices for internal usage.Conducted thorough unit testing to ensure quality and reliability of implemented modules.Develop and deploy AWS Lambda Functions to support serverless computing and event-driven architectures.

Inspected geotechnical surveys and construction for infrastructure projects in the Seattle area.Led and planned underground site investigation by mediating and arranging contracts among governmental entities (Seattle PublicUtilities, Washington State Department of Transportation, etc.) and hired contractors.Assigned and analyzed geotechnical laboratory tests for characterizing soil samples.Created technical reports and analyses of geotechnical structures using state-of-the-art software and numerical modeling tools.

Researched landslide flow using a hybrid Eulerian-Lagrangian numerical model appropriate for large strain scenarios.Implemented two fully-tested and templatized classes – triangular elements and interface interaction – to the research team’s MaterialPoint Method code (MPM CB-Geo), fully developed in C++. The former enabled handling of irregular-shaped physical models whilst thelatter enabled contact mechanics (friction, adhesion, surface viscosity).Developed python scripts for reading, writing, and manipulating data, enabling visualization of landslide models in Paraview.

Daily developed civil engineering designs and recommendations for the company’s clients.Debugged and fixed the company’s own VBA codes, hitherto obsolete and inoperable, for designing veneer reinforcement and geosynthetic encased columns. Lead and collaborated with design teams (3-5 engineers) on managing 200+/year geotechnical design projects. Trained the ~30 sales representatives on the design and application of geosynthetics.