Sergio Hernandez Email & Phone Number

Los Angeles, Ca, Us

Irvine, California, United States

- Developing and designing Object Oriented software to enhance the user interface for grocery product search results on amazon.com and other international domains that have grocery partners such as Whole Foods, Amazon Fresh, and Morrisons in marketplaces such as the US, India, Japan, the UK, and Spain to name a few.- Monitor experiments and projects that are visible to over 3.4 million customers to catch and triage any defects or bugs that are customer impacting, resulting in the successful launch of a new Add-To-Cart feature on Amazon Fresh and Whole Foods search that is live today.- Reviewed 50+ Java and JavaScript code submissions to ensure errors are caught in development and follows good coding standards, while also submitting over 60+ code reviews myself.- Developed an AWS CDK construct in TypeScript to generate customizable CloudWatch metrics for internal Amazon APIs, incorporating thresholds with alarms that cut tickets to our team when breached, and metrics like latency, availability, and CPU time, that get deployed across multiple AWS regions.- Managed the progress of over 45+ Jira stories, ensuring accurate tracking of experiments and projects to support team objectives.

Agoura Hills, California, United States

- Developed an input processing program for the finance department that converts an English-like language into Python code, and had to take into consideration edge cases from pre-written statements.- Implemented a conversion algorithm from the Python code into JSON format for future execution, using CSV data to determine how to store each Python script.- Created a grammar for financial analysts to follow for newly added statements, enforcing good coding practice and less risks for bugs that were previously added.

Los Angeles County, California, United States

- Perform GIS spatial analysis (in QGIS) to document earthquake recording across California and quantitative analysis (in Excel and Matlab) to generate graphs that show trends in fault intensities.- Produced visualizations, including plot diagrams and images, to support research efforts in a white paper essay about my findings for earthquake magnitude trends.