James Darrell Email & Phone Number

Cambridge, Massachusetts, Us

Boston, Massachusetts, Us

Denver, Colorado, Us

In two weeks, stood up Looker instance and corresponding data warehousing pipeline for New York City hotel program in response to COVID-19Architected and implemented first-ever company-wide data infrastructure (Stitch, Snowflake, dbt, Looker) and incorporated a multitude of data sources (PostgreSQL, Salesforce, Marketo, NetSuite, Google Analytics, Google Ads, etc.)Determined Customer Lifetime Value of key user segments to inform marketing and sales initiatives (SQL, Python, Mode)Developed model of account/user churn and implemented in Salesforce for automated consumption (SQL, Python, Mode)

Denver, Colorado, Us

Rolled out logistic regression machine learning model to predict likelihood of order closeArchitected and implemented data infrastructure (Stitch (extract/load), Snowflake (warehouse), dbt (transform), Looker (BI))Determined Customer Lifetime Value of key user segments to inform marketing and sales initiatives (SQL, Python, BI tool)Developed model of account/user churn and implemented in Salesforce for automated consumption (SQL, Python, BI tool)Built dozens of reports and dashboards for every department in the company (SQL, BI tool)Identified key drivers of company close ratio and rolled out overhaul of operations teams based on analysis recommendationsLed workshop to teach other employees SQL in order to democratize data and enable others to answer their own questions

I left Knowledge Factor (now Amplifire) to embark on a period of independent study in data science. I enrolled in a Machine Learning Engineer Nanodegree on Udacity in which I carried out projects in Python using supervised and unsupervised machine learning algorithms from decision trees, regression, and clustering to neural networks and deep learning.To supplement the course, I practiced and competed on HackerRank and Kaggle.

Boulder, Co, Us

Coded R scripts and advanced SQL scripts to analyze medium-sized data sets (hundreds of millions of records)Modeled user performance and behavior using forgetting curves in order to enhance adaptive learning algorithmCreated R program to compute statistical metrics (psychometrics, including IRT parameter estimates, point-biserial correlation)Designed and implemented A/B tests (AMT experiments) to evaluate new and experimental product featuresCo-architected new data warehouse and mart structure

Boulder, Co, Us

While in this role, I went above and beyond the initial responsibilities of setting up and maintaining client accounts and integrations, and troubleshooting client issues. I took it upon myself to learn the database and SQL as well as utilizing REST API's and the server logs to expand the capabilities of the position and improve overall speed and efficiency. I wrote numerous documents on the systems and processes to establish standards and repeatable procedures.

Aurora, Co, Us

I was contracted to design and develop a new fully responsive (mobile friendly) company website using WordPress, Twitter Bootstrap, Adobe Photoshop. The website was Search Engine Optimized and integrated with social media. I also performed various administrative duties: filing and faxing documents, managing evites, word processing.

- Visuals specialist: In charge of changing, maintaining all visual displays in store and store windows- Trained and experienced at cash register, shipment, fitting rooms, sales floor, promotions and signage, markdowns, cleaning- Associate of the Month, January 2013 (sold most store credit cards, excelled in other duties)

- Initiated entrepreneurial venture: collaborative networking website conceived to generate and mature innovative ideas- Recruited and managed team to construct website structure and functionality- Awarded $1500 grant funding to design and develop website- Gave weekly presentations of website operations, detailed business plans to classes, project advisors, and investors

Appleton, Wi, Us

- Operated and maintained high voltage plasma physics experiment to manipulate and analyze pure-electron plasma in magnetic toroidal trap- Built amplifier circuits for current-to-voltage converters to expand capabilities of experiment- Presented experiment and progress to 200+ audience at Midstates Consortium of Math and Science- Extended research into senior project to explore original experimental technique and succeeded in demonstrating its validity, presented results to physics department

- Served as community leader and role model for 140+ students- Handled emergency situations- Mediated Conflicts- Supervised appropriate student conduct- Organized and led student activities and events

Appleton, Wi, Us

- Imaged surfaces of thin liquid crystal films using Atomic Force Microscopy- Evaluated image-data with Fourier Analysis- Detailed ten weeks of daily progress in lab notebook for results to be used by future research teams