Pura

Senior Data Engineer

Dutch Engineer

I can write blog posts, LinkedIn posts, demos, or share advice about your data or machine learning infrastructure.

Founder

EcZachly Inc

Instructor and Lead Teacher Assistant

Zwift

Build long-term roadmaps for machine learning platform and code best practices for the data science team
Orchestrated the implementation of DBT to build data lineage and shorten debugging time by 30%
Deployed XGBoost models to identify customers who will might or not subscribe in free trials. 
Lead a team to provide the best short-term and long-term solutions to reduce service downtime by 50%
Own e-commerce datasets to lower handle data quality, data contracts, and resolve pipelines downtime
Tools: AWS, Kafka, Python, Docker, Kubernetes, Scala, Spark, SQL, Airflow, Jenkins,  DBT

Senior Data and ML Platform Engineer

Clinical Trial Media

Documented technical specifications of workflows to be presented to stakeholders and executive team
Automated and optimized existing workflows using Prefect and dbt to adhere to best practices
Tools: DBT, Prefect, Azure, Azure Data Factory, Python, SQL, Tableau Server, Docker

Qumulo

Lead migration of on-premise pipelines to cloud capable of handling 210+ GB per day
Produce key metrics to counsel sales and engineering and drive product feature decisions
Integrate linters, tests, and CICD to improve Data Science code quality 
Tools: AWS, Redshift, S3, Postgresql, Pyspark, Fargate, Python, Gitlab CICD, SQL, MongoDB, Tableau

Data Scientist

Blueprint Technologies

Created 30,000 customers’ metric sheets that calculated employees behavior for 1.5 months before and 1.5 months after covid and presented to the c-executive suite of the F500 company 
Developed daily pipelines with >500 TB that build employee behavior metric sheets on request
Productionalize Decision Tree and Logistic Regression to prioritize likely buyers
Optimize SQL and PowerShell scripts to reduce running script from 3 days to 15 minutes.

Tools: Azure Databricks, Python, Plotly, PowerShell, C#, COSMOS, SQL

Data Engineer

Redapt Inc

Migrating Hadoop cluster on VMs to Google Cloud Platform's Dataproc cluster
Importing, cleaning, and visualizing data in Power BI dashboards
Building a storage infrastructure system to identify frequent patterns and errors 
Incorporating Machine Learning algorithms to recommend new items for over a million items and for several thousands of customers. 
Tools: Hadoop, Kafka, Airflow, Spark, Power BI, Azure Databricks, Azure ML Studio, Azure Blob Storage

Apex Learning

Build a python script to obtain Zendesk's data via its RESTful API for marketing reports
Redesigned monthly and yearly reports by incorporating Tableau Software to evaluate tutors’ performance 
Implement Salesforce.com to create an easily accessible school’s credit acceptance database for marketing campaigns 
Support middle and high school students’ through the Apex Learning Virtual School curriculum

Online Tutoring and Data Analysis

Projects

ILest: Ionic Liquid estimation Tool
Team project, Implemented LASSO, SVR, and MLP-Regressor on 10,000 data points to estimate the desired properties of ionic liquid binary mixtures for electric battery applications
Tools: scikit-learn, Pandas, RDKit, Matplotlib

Data-Driven Design of Perovskite
Team Project, Carried out LASSO, and supervised neural networks on a reduced data set to identify the optimal combination of elements in the hybrid organic perovskites (crystals)
Tools: scikit-learn, Pandas, RDKit, Matplotlib

Stack Overflow: Suggest a Tag for My Post Please 
Queried 150k posts and users details to determine tags needed based upon a posts' body or score.
Tools: PySpark, Neo4j, Plotly, Python, Cypher, SQL

How Much Will Your Videogame Sell For? 
Web scraping video game tweets and statistics from VGChartz to predict their unit sales using machine learning
Tools: BeautifulSoup, Matploblib, multiprocessing, requests, plotly

Twitter Scraping Tool
Web-scraped old tweets from the twitter page to eliminate the usage of the Twitter Official API and decrease the time needed by 60%. Tools: pyquery, requests, datetime

Senior Data & ML Platform Engineer | dutchengineer.substack.com | Host of Ask A Data Mentor Podcast

Built long-term roadmaps for data platform and machine learning platform
Experience in designing, analyzing, and visualizing large (>500 TB) datasets 
Build and manage multiple ETL infrastructures to identify text patterns and detect network and hardware anomalies
Prepare critical metrics to guide product decisions in people, healthcare, computer games, and chemical analytics
Multilingual (Dutch, English, Spanish)

Keywords: Airflow, AWS (Cloudwatch,  ECS, EKS, Fargate, Glue, Redshift, Kinesis, Databricks, Postgresql, S3), Azure (Azure Functions, Azure ML Studio, Databricks, PowerBI, SQL Server), BentoML, C++, Datadog, Docker, ElasticSearch, Flink, Kafka, Keras, Kubernetes, Hive, High Performance Computing, Github Actions, Gitlab CICD,  Pagerduty, PowerBI,  Prefect, Python (DBT, Numpy, Pydantic, Sklearn,Scipy), Pyspark, Neural Network, Natural Language Processing, MLFlow, MongoDB, Recommendations, Sagemaker, Scala, SparkML, SQL, Tableau, Terraform

Sarah Floris, MS

Lead architect developing a data platform that serves analysts and scientists, driven by core principles of data governance like quality, freshness, and security. Leveraging technologies such as Databricks, Spark, Airflow, Kafka, Atlan, and Tableau, to ensure the system meets high data standards and provides a self-service platform for other teams and stakeholders. Manages and enhances all operations, design and code development and review processes, and automations. Provides guidelines and standards for documentation.

Staff Data Engineer

Zillow

Built a new team of Big Data engineers to provide critical analytical and operational datasets for Zillow Home Loans at launch and beyond, creating the product's first Data Lake and reporting data marts. Hands-on engineering development using Airflow and Spark and infrastructure management using Terraform. Managed a team of remote vendors while delivering on various projects of my own and contributing to larger team and company initiatives.

Senior Software Development Engineer, Big Data

Amazon

Lead engineer on Amazon's buying and placement simulation system which maps demand forecasts to future buy quantities and fulfillment center inventory placement for all ASINs.

Software Development Engineer III

Disney Interactive

Built chat bot prototype using Watson NL Classifier and Google SyntaxNet (Parsey McParseface).

Delivered Matterhorn Machine Learning team's recommender system to production, built new features into the ALS model to cold-start new users and content items, supported integration with Disney.com, Disney Life, ABC TV. Re-architected technology to integrate with Apache Storm and redis.

Lead of the Safe Chat system, a next-generation predictive chat safety system (v2.0 of Phrase Chat, below) integrated with Disney Infinity, Club Penguin and other Disney games. Designed and engineered the as-you-type search engine and real-time message validator. This is an extremely unique chat/messaging safety system borne out of the Disney R&D team and brought to market for Disney Interactive online worlds and mobile games. Managed the team and all projects and leads the design and development efforts. Responsible for gathering requirements, analysis, planning and driving our efforts.

System lead, architect and acting manager with planning and project management duties for the Disney Online Studios (DOS) commerce supporting Preschool Time Online, Toontown Online, Pirates of the Caribbean Online, Pixie Hollow Online and World of Cars Online. Technical lead with planning and vendor coordination duties for next generation commerce system for DOS for those same products plus Club Penguin.

Lead Software Engineer

j2 Global Communications

Technical lead for several projects and system including the content-managed email and outbound document rasterization and fax delivery systems.

Senior Software Engineer

Atomic Systems

Architect of account management and billing systems, and technical lead on various web site projects (atomicsystems.com).

Partner

Static

Developer of game-finder GUI and in-house graphic content authoring tools.

Software Engineer

Celtech Software

Developed, documented, sold and supported several shareware products, including O'Basic (obasic.com) and O'Setup.

taplio

The Battle

Sarah Floris, MS

Sean O'Dell

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