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

Bluebeam

VP of Engineering

Nava

Role: Manager of managers of full stack web, backend & infrastructure teams, Cloud Migration & Operations, Staffing & hiring lead.
Environment: Microservices, AWS, FHIR, HL7, Analytics, Agile development
Responsibilities:
• Lead cross-functional teams to build human-centered scalable digital services for our government, delivering software that is depended on by millions of Americans.
• Build scalable, consistent processes and best practices in collaboration with other Nava practices (Engineering, Design, Program, and Product).
• Lead staffing and hiring for engineering org partnering with our Delivery Operations, Program Management, and Talent Acquisition teams.
• Collaborate with senior leaders across practices to meet company objectives, recruit and hire, establish best processes and practices, grow according to the team vision, and represent engineering for Nava.
• Lead Cloud Operations Engineering strategy & best practices across all Nava teams.

Director of Engineering

Role: Manager of managers of Mobile, Web and Game teams focusing on cross-platform solutions.
Environment: MicroServices, React, NodeJS, PostgreSQL, iOS/Android, C++, Git, Jenkins, Docker, AWS, Kubernetes, Server-Driven UI
Responsibilities:
●	Provided Engineering oversight to multiple cross-discipline teams including Game/Mobile/Web/Backend, growing the org to more than double its size.
●	Accountable for planning & managing Engineering budget, staffing, hiring, mentoring & performance management for teams comprising of junior to Staff+ engineers & managers.
●	Defined performance metrics and reports on the engineering functions’ progress against team specific goals.
●	Partnered with Product, QA & DevOps liaisons in making sure we can provide state-of-the-art features while focusing on various Engineering initiatives (OKRs) to scale & support our applications to the next level.
●	Collaborated with HR, Recruiting & DEIB teams on various improvements like building a metric driven Performance Review process, standardizing Interview question banks and hosting the 1st ever Hackathon across the company.
●	Introduced and landed significant tech/process improvements (Post Mortems, Feature Flags, UI Middleware, Crash Monitoring, Instrumentation + Alerting).
●	Championed R&D projects like Server-Driven UI development to fast pace Mobile + Web development and AWS OpsWorks to Kubernetes migration to allow for vendor agnostic, scalable and cost-effective CI/CD solutions.

Director Of Engineering

CDK Global

Role: Engineering lead for four full stack teams partnering with respective state DMVs.
Environment: Visual Studio 2017, .Net Framework 4.5/Core, C#, SOA, WebApi, Angular 2, SignalR, MongoDB, SQL Server, Git, Stash, Bamboo, Docker, Cloud, AWS, Agile Development.
Responsibilities:
●	Used Full Agile methodology for all development efforts. (Sprint Planning, Scrums/ Daily Stand-ups, story grooming) 
●	Continuous involvement with Strategy, Planning, Implementation, Deployment and day-to-day Operational Management. 
●	Responsible for development budget and staff planning for every quarter/fiscal year.
●	Acted as the Security officer for the development teams, assisting with SOC and other State related Audits mandated by State DMVs. 
●	Direct involvement with growing the team, creating development standards and processes.
●	Managed onsite and offshore development teams. Work with other teams to ensure quality products are delivered (Product owners, TechOps, DB, Sales, Marketing, Clients, etc).
●	Led 4 different teams of development (onsite and offshore) and mentor 8 direct reports including 2 managers.

Senior Manager, Development R&D

Green Dot Corporation

Green Dot Corp is a leader in providing Prepaid cards through retail or web channels. Worked on various systems redesigning them from grounds up to handle the growing load and speed demands of the company.

Responsibilities:
•	Overseeing architecture, mentoring the growth of team, and perform periodic code review with team members to ensure code quality.
•	Responsible for framework design, and enterprise level architecture, architecture approach on various enterprise solutions. 
•	Manage offshore development team.
•	Designing, implementation and management of Service Oriented Architecture (SOA).
•	Define the service layer for communication with external partners and internal applications.
•	Design and architect core component of the companies, ensure performance and scalability of each component (Memory usage, CPU utilization, stability, reusability, flexibility).
•	Designed and implemented the Customer Notification system which provides real-time alerts to customers based on events. This system can send alerts to Email/SMS/Facebook/Push Notifications to Mobile devices, etc.
•	Designed and developed a new uniform GDN system that interacts with other prepaid cards to reload using MoneyPak or cash/check at retail locations (swipe reload). 
•	For all the above projects lead the teams from sizes of 5 – 15 developers (onsite and offshore) to enhance & maintain these systems using offshore and onsite resources.
•	Built a proof of concept (POC) for migrating SSIS Packages to Hadoop technology for batch jobs.

Manager, Software Development

Myspace

•	Lead the team in designing custom features for huge advertisers like Target, McDonald, etc constantly bringing in revenue for the company. These features once developed could be easily configured to use for other advertisers without modifying the code.
•	Enhancing the internal web admin application ‘Campaign Manager’ that uses Windows Communication Foundation (WCF) technology, which offers a manageable approach to distributed computing, broad interoperability, and direct support for service orientation.
•	Lead the team on designing and implementing the FIM Press site with SharePoint as the back-end and ASP.NET 2.0 front end. 
•	Developed Workflow (SPWF) in Visual Studio using .Net 3.5 framework to handle caching issues for the FIM Press site.

Sr .Net Developer

Sallie Mae

•	Worked in the Loan Accounting System project, that implements Remoting and Fowler’s Domain model. Provided maintenance, defects fixing, enhancements, upgrades and production support.
•	Worked with integrating 3rd party controls like Component One.
•	Handled Out of Memory issue with LAS as it loads a lot of data in cache.
•	Designed and developed the web based front-end for Loan Selection Tool project using ASP.NET in Visual Studio 2005.
•	Lead a team of 3-4 contractors to implement and test the Loan Selection Tool project that was built in a very tight schedule.
•	Provided builds for projects using nAnt and MsBuild scripts for Visual Studio 2003 and 2005 projects respectively.

Sr Systems Analyst

Independence Airlines

•	Designed and developed Web Services to be used by Pilots and Crew Members like getting weather related information, tracking status of flights and crew members.
•	Implemented various enhancements in the e-commerce website of the company www.FLYI.com like Gift Cards, UATP Credit Card encryptions, etc.
•	Worked on various Windows Services like getting messages from Volpe through sockets, gathering information about computers and saving them in Active Directory, parsing error messages from Event Logs of all critical servers and adding them in Databases.
•	Designed and developed the company’s Employee Review intranet webpage including the database. All the employees of the company could do a self-review which would then go through the process of review by manager and lastly approval by VP.
•	Mentor junior programmers as a technical lead.

Teleformix LLC

About the Project: ECHO Explorer is a digital voice recorder that records, stores and plays digitized phone calls for verification and QA. It communicates with the existing Java classes to show the actual system, Proxies have been written to communicate between Java and .NET framework.
Responsibilities:
•	Designed and implemented a dynamic desktop application in a Windows .NET environment C# language, that can interact with Java classes and Informix database in a Unix environment though proxies. The front end of the application was developed using XML files, so that the look and feel of the application can be dynamic and changed on the fly. 
•	Real-time monitoring of calls was achieved using multi-threading and Timers in the application.

Software Engineer

3Com

Voice over IP over Cable based on DOCSIS 1.1 (VoIP over Cable on CMTS)
Environment: C on UNIX, SNMP, Real time System, ClearCase, Exceed.
Responsibilities:
•	Registration of the Cable Modems with the CMTS. Designed and implemented the new features related with DOCSIS1.1 Registration at the UMC end. 
•	Management of Service Flows needed for VoIP and other data packets like Best Effort and Unsolicited Grant Service.

Sr Software Engineer

Innovative, collaborative & results-driven empathetic Engineering executive with extensive experience leading distributed teams across multiple worldwide locations.
● Proven track record energizing small to large organizations, embracing cultural change, exceeding quality performance, and delivering financial business results.
● Highly proficient communicator effective at managing relationships between strategic leadership, third-party vendors, and clients.

Areas of expertise:
-Product Roadmap & Delivery
-Cross-Platform Development
-Staffing & Hiring
-Organization Planning
-Performance Management
-Budgeting & Cost Control

taplio

The Battle

Sarah Floris, MS

Priya A.

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