Christopher Johnson

Worked with a legacy ride-booking service for hospital clients, Circulation. Upgraded legacy code-base from Python3.7 to Python3.9. Developed feature updates, like Ride Flow, a real-time tracking application for tracking rides and debugging the system in real-time. Developed microservices for billing automation applications. Designed and developed GCS, a global communications system for communications with customers via SMS, SMSVoice, and Email.

• Developed Ride Flow, a real-time tracking application for debugging rides.

• Reduced run-time of Circulation from ~200 requests-per-second to ~450 requests-per-second

• Designed and implemented algorithmic software to determine when a ride was completed, in order to bill customers with infromation provided by the transporatation provider. Provided API extensions to transportation providers to provide accurate ride data, even after the ride has completed. Invoice Records were recorded using a format to ensure record accuracy during end-of-month billing automation processes.

• Developed and updated billing automation software, a standalone microservice to automate the end-of-month billing process.

• Conducted software design reviews, communicated results through presentations and project reports as well as scientific publications.

• Desinged and developed GCS, a global communications sytem for contacting customers about rides, and much more, via SMS, SMSVoice, and email.

• Implemented best-practices when using Celery and Redis based infrastructure, by removing reduncencies and adding cache-locking to speed-up runtimes.

• Implemented AWS Cloud architecture in GCS, using AWS resources and environments.

Designed, developed, tested and deployed production back-end Python/Django/Flask
applications and microservices, and UI applications with React and Express for insurance
agency with results that increased overall revenue, and the ability of the agencies indoor team
to track leads, operate CRM systems effectively, and even partner with local car
dealerships/auto financers to allow them to obtain quotes for their auto customers using this
agency, in addition to providing outdoor salesmen to have access to a web interface to sign new
clients, and store/update leads in the database.

    • Designed and developed customer-facing web application for processing an application
    for insurance, payments, customer account management, with the ability for outdoor
    salesmen to store and track leads, as well as sign new customers using Python for the
    API(s) and React and Express for UI(s).
    • Connected existing Ring Central program to CRM to identify existing customers, and
    store data for new customers.
    • Designed and developed office infrastructure to decrease latency between office
    desktops and insurance claims database leading to increased productivity.

Studied Computer Engineering, embedded systems programming, C++, Python