Douglas Pestana

Douglas Pestana

Mentor
5.0
(4 reviews)
US$30.00
For every 15 mins
19
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ABOUT ME
Data Science and AI Expert with 13 Years Experience
Data Science and AI Expert with 13 Years Experience

SHORT BIO

I turn data into cash đź’°

Discerning business maverick with 13 years experience leading and building data science products, statistical models, and machine learning algorithms. Motivated, thought-provoking leader with a strong entrepreneurial spirit and an astute sense of brand efficacy. Several years of experience in hiring and managing teams and building data science and analytics operations from the ground up by deploying models and data products as integral, value-added necessities to the day-to-day business operations.

SKILLS OVERVIEW:

Programming Languages - R, Python, SQL, SAS, Julia
Cloud - Microsoft Azure, Google Cloud Platform
Software - Databricks, Azure Machine Learning, Alteryx, Google Cloud AI, Google Analytics, Twilio Segment CDP
Machine Learning - Regression Analysis, A/B Testing, Time Series Forecasting, Cluster Analysis, Principal Components, Random Forests, Gradient Boosting, XGBoost, GLM, H2O AI, Product Recommenders, AutoML
Databases - Azure SQL, Microsoft SQL Server, Google Big Query, AWS MySQL, PostgreSQL
Visualization - Excel, PowerBI, MicroStrategy, Tableau, Mode Analytics
Web Frameworks - Shiny, HTML, CSS, JavaScript, APIs
Project Management - Jira, Workfront, Agile, Kanban, Six Sigma, Confluence, Microsoft Teams, Slack, Miro

CONFERENCE AND EVENT TALKS:

Data Science Salon - Miami, FL - Feb 8-9, 2018: https://www.youtube.com/watch?v=6W24QQx72JI

Data Science Salon – Dallas, TX – Apr 27, 2018: https://www.youtube.com/watch?v=YV8brwe-bWA

South Florida Interactive Marketing Association – Miami, FL – Jul 18, 2019: https://sfima.com/event/customer-personalization-using-ai-the-easy-way/

Miami Python Meetup Group – Royal Caribbean HQs, Miami, FL – Aug 15, 2019: https://www.meetup.com/python-miami/events/263777763/

Marketing Analytics and Data Science Conference West – San Francisco, CA – July 28-30, 2020: https://informaconnect.com/marketing-analytics-and-data-science-west/speakers/

DATA SCIENCE AND AI ARTICLES:

Automated Time Series Forecasting in R – https://www.remixinstitute.com/blog/automate-your-kpi-forecasts-with-only-1-line-of-r-code-using-autots/

Business AI for Small-to-Medium Sized Businesses - https://www.remixinstitute.com/blog/business-ai-for-small-to-medium-sized-businesses-with-remixautoml

English
Eastern Time (US & Canada) (-04:00)
Joined March 2018
EXPERTISE
10 years experience | 2 endorsements
I have been programming and developing in R for 13 years. Common tasks would be data wrangling, feature engineering, machine learning & s...
I have been programming and developing in R for 13 years. Common tasks would be data wrangling, feature engineering, machine learning & statistical modeling, data visualization, and putting R code into a production environment.
7 years experience
I have been building and deploying Shiny apps for over 6 years. Common tasks is getting business requirements from stakeholders, wirefram...
I have been building and deploying Shiny apps for over 6 years. Common tasks is getting business requirements from stakeholders, wireframe of Shiny app design, front-end and back-end programming, leveraging custom HTML, CSS, and Javascript, and deploying Shiny app to production. My Shiny apps are user-centric with clean design and performance tracking.
10 years experience
I have been building, coding, and deploying machine learning models for 13 years. I have had major success of deployment of machine learn...
I have been building, coding, and deploying machine learning models for 13 years. I have had major success of deployment of machine learning models at two Fortune 500 companies, one Fortune 1000 company, a private credit card bank, an eCommerce retailer, and a fintech startup. Solid mathematical foundation of machine learning techniques. Focus is on measuring ROI from machine learning models.
10 years experience
I'm a business maverick with 13 years experience building data science apps, products, algorithms, and sexy visualizations. I've managed ...
I'm a business maverick with 13 years experience building data science apps, products, algorithms, and sexy visualizations. I've managed data science teams and executed on my vision for data science at organizations.

REVIEWS FROM CLIENTS

5.0
(4 reviews)
Ahmed Ewis
Ahmed Ewis
September 2022
Douglas is a professional mentor and very patient with his clients he has excellent domain knowledge, and the submitted work is immaculate and well organized. I advise other clients to approach him!
Kiowa
Kiowa
September 2022
Awesome tutor! Very patient and knowledgeable about R.
EMPLOYMENTS
AI Engineering Lead
Baptist Health South Florida
2022-05-01-Present
Leverages artificial intelligence to improve operational efficiency and enhance patient care
Leverages artificial intelligence to improve operational efficiency and enhance patient care
SQL
R
Machine Learning
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SQL
R
Machine Learning
Data Science
AI (artificial intelligence)
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Director of Data Science
Hello Alice
2021-07-01-2022-05-01
• Led Data Science initiatives and data science product development which included external app user-facing and internal business user-fa...
• Led Data Science initiatives and data science product development which included external app user-facing and internal business user-facing models • Led a mission critical database migration from Google Big Query and MySQL on AWS and merged it all into a single data warehouse on AWS Redshift to achieve long term data maturity for the organization and ensure best practices for data governance • Managed, mentored, and inspired a team of 2 data scientists and 1 data architect and managed a $1M budget for data science • Built many of the data science processes and operations from scratch including Agile and Kanban project management and Confluence documentation of architecture, SOPs, training, knowledge sharing, and roadmaps • Cleaned up the data warehouse by organizing dirty, disjointed datasets and building data engineering processes for transforming them into useable tables to be consumed by several business users • Managed the Data Tracking Plan and data dictionary and the development of new databases and tables • Collaborated with the Product team including Engineering, Product Design, and Product Managers for the successful deployment of machine learning models • Built and deployed several data science products in Google Cloud and Databricks including a Content Recommender, Grants Scraper RPA Bot, k-Means clustering Personas model, text classification/named entity recognition/sentiment analysis of customer support tickets, and Recency-Frequency-Tenure segmentation of users for prioritization of customer support tickets • Managed the Customer Data Platform (Twilio Segment) and integrated several 3rd party data sources into the data warehouse including ZenDesk, Hubspot, MailChimp, and Salesforce • Managed 4 cloud software vendor relationships and explored new technologies to ensure Hello Alice data science operations can scale with new user growth and data volume.
Python
SQL
MySQL
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Python
SQL
MySQL
R
Machine Learning
Google BigQuery
Data Science
Amazon Redshift
Databricks
AI (artificial intelligence)
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Manager of Data Science and Analytics
Life Extension
2017-05-01-2021-07-01
● Second analytics and data science hire in the company’s history and helped lead the development of the analytics and data science team ...
● Second analytics and data science hire in the company’s history and helped lead the development of the analytics and data science team from the ground up by deploying machine learning models into the day-to-day marketing and business operations and recruiting, hiring, growing, and developing our team to 6 FTEs. ● Managed, led, mentored, and inspired a team of 3 analysts/data scientists and conducted their bi-annual performance reviews ● Conducted training with direct reports, shared knowledge and business philosophies, and prioritized their projects ● Optimized direct mail campaigns by building scalable machine learning propensity models that saved $1,434,637 in print costs over a 3-year period while still retaining highest likelihood responders. ● Developed, tested, and deployed Churn Prediction and Market Basket Analysis models using R and Microsoft Azure Machine Learning ● Developed and deployed 3 ML product recommender algorithms (Next Best Product, Frequently Bought Together, and Cross Category) for use in customer lifecycle emails, variable print campaigns, and product description pages on the website that generated $2,501,401 in incremental revenue since deployment. ● Created automated process for image recognition and descriptions, and metadata and keyword tagging for hundreds of internal image assets for SEO team using R, Python, and Microsoft Cognitive Services ● Developed an NLP model that scraped and “read” 2,635 magazine articles on company’s website and mapped statistically relevant keywords from the article to a Universal Health Topic tag for each URL. NLP model built using Scrapy in Python and udpipe in R. ● Developed an automated anomaly detection model for 50+ key metrics that sent anomaly alerts to Slack ● Developed an automated SEO keyword research bot that does keyword research on a batch of keywords uploaded by user that leverages the SEMRush API and reduced a 10+ hour manual research process to 48 seconds
SQL
R
Azure
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SQL
R
Azure
Machine Learning
Data Science
Microsoft SQL Server
Shiny
Microsoft Power BI
Alteryx
AI (artificial intelligence)
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