John Mathena Email & Phone Number

Menlo Park, Ca, Us

Chicago, Illinois, Us

Dublin 2, Ie

• Developed a REST API in Go to validate streaming messages, and deployed it to a Lambda function• Deployed a containerized application to ECS to route valid messages to a Cassandra cluster• Extended a parser in Go to read custom logic from YAML files• Modified Python application running on a Lambda function to process and retrieve data for streaming events• Created CICD pipelines and unit tests for the above; performed DevOps tasks using Jenkins, Cucumber, and Splunk• Acted as Onboarding Lead for a team tasked with increasing velocity of new developers on client projects; authored documentation and organized programming to introduce developers to client architecture and SDLC (Agile) culture

Chicago, Illinois, Us

• Started an initiative to expand the CCH intern program, gaining approval from leadership to bring on three new developers. Acted as their mentor for the codebase, coordinating tasks to align with CCH goals, writing documentation, and structuring our workflow using Agile methodology• Created new cloud-first (AWS) features with Django to query, process, and filter patient records, facilitating care-home compliance with government regulations• Redesigned views and added modular product features to incorporate feedback on mobile app in React Native• Addressed bug reports, remediating both user-facing and backend issues to improve functionality and ease-of-use

Nashville, Tennessee, Us

• Worked as a grader for MATH 3320: Error-Correcting Codes and Cryptography at Vanderbilt University• Graded ~50 assignments a week, providing feedback and citations to the textbook to justify grading decisions• Strengthened knowledge of mathematical ideas underlying concepts such as End-to-End Encryption and Blockchain

• Collaborated with a team of developers to design and implement a mobile application based on client vision• Created accessible and responsive mobile views in React Native• Acted as primary administrator for AWS-based backend to the app, focusing on EC2 and RDS• Compiled and authored documentation for above technology to facilitate increase in developer velocity

• Analyzed and refactored C code that drove a low-cost powered prosthetic ankle, reducing codebase size by 20% and making underlying logic more modular and maintainable in anticipation of human trials• Collected and processed data gathered in the lab from room-scale Vicon motion tracking cameras and Cosmed cardiopulmonary hardware with MATLAB• Analyzed data with Python to find evidence for an innovative prosthetic design that 9/10 trial participants preferred to existing designs

Oklahoma City, Oklahoma, Us

• Took on a role as an independent researcher, seeking to understand the phenomena behind production downturn and recommend a strategy to mitigate recovery loss• Laid out a high-level research and analysis plan, which was presented to lead engineers for approval• Undertook a multi-month data analysis effort, using MySQL and Python to retrieve and process ~400GB of data• Used statistical and machine-learning methods to perform multivariate analysis and PCA