Jacob Rafko Email & Phone Number

San Diego, Ca, Us

Phoenix, Arizona, United States

Lead owner of a groundbreaking new internal operational efficiency and monitoring tool, utilized by the entire web team throughout American Express. (React/Kotlin).Responsible from start-to-finish design of the new internal tool including best design practices and best testing processes. (React/Cypress)Lead a team of 6 engineers, delegating tasks between them to leverage their strengths to maximize output efficiency. (React/Kotlin/Leadership/Collaboration)

Scottsdale, Arizona, Estados Unidos

- Designed an end to end cross-team project to increase recruitment into our program, improving recruitment rate by over 400% which generated $4 billion of revenue. (React/Java/Spring)- Implemented robust integration tests for our front-end web application using Nightwatch, increasing previous testcoverage by over 300%, enabling a full CD environment. (TypeScript/Nightwatch.js)- Automated administrative operations by creating a browser extension to automatically parse… Show more - Designed an end to end cross-team project to increase recruitment into our program, improving recruitment rate by over 400% which generated $4 billion of revenue. (React/Java/Spring)- Implemented robust integration tests for our front-end web application using Nightwatch, increasing previous testcoverage by over 300%, enabling a full CD environment. (TypeScript/Nightwatch.js)- Automated administrative operations by creating a browser extension to automatically parse customer information to beused by developers. (HTML/Javascript)- Contributed to Amazon Vine’s Seller/Vendor facing web application, impacting over 9.7 million registered sellersworldwide. (React) Show less

Seattle, Washington, United States

- Designed and maintained infrastructure capable of handling over 200 million users with auto-scaling hosts to reduce infrastructure costs. (AWS)- Automated the migration of an outdated proprietary infrastructure by automatically removing nested templates; reducing site latency by 27% and cutting manual migration effort from an estimated 4 months to 3 weeks. (Python)- Participated in rigorous on-call rotations with a rolling average of 7 high severity events weekly.- Led… Show more - Designed and maintained infrastructure capable of handling over 200 million users with auto-scaling hosts to reduce infrastructure costs. (AWS)- Automated the migration of an outdated proprietary infrastructure by automatically removing nested templates; reducing site latency by 27% and cutting manual migration effort from an estimated 4 months to 3 weeks. (Python)- Participated in rigorous on-call rotations with a rolling average of 7 high severity events weekly.- Led an org-wide hackathon project, winning first place allowing me to present to VP level management on thesignificance of our project. (Java/Javascript) Show less

Seattle, Washington, United States

- Increased the efficiency of generating web components, allowing developers to use a UI instead of manually designingthe component. This process is 197 times faster than creating components manually. (React)- Implemented 2 layers of security into my project as a stretch goal to prevent access from outside actors in order to securecompany assets/information. (Node.js/Java)

Tucson, Arizona, United States

Pioneered the use of React Native in a confidential application for internal use within the University of Arizona, directly impacting the future of the application’s ability to scale. (React Native)Reduced manual involvement in updating mobile application content by integrating the application directly with Google Firebase. (Java)

Tucson, Arizona Area

Responsible for student comprehension and lead section discussions regarding the Software Development, and Analysis of Discrete Structures classes at University of Arizona.Responsible for grading over 35 students’ programming assignments, quizzes, and exams.Assist students in understanding course content via office hours and discussions

Tucson, Arizona

As Course Coordinator for CSC 345: Analysis of Discrete structures I was responsible for:Creating and distributing projects for students in areas such as: skip lists, algorithm complexity, and sorting.Grading of over 30 individual students.