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

Self Employed

• Successfully established and configured a new Shopify e-commerce store, ensuring seamless and efficient operations.

• Designed and launched 4 e-commerce websites utilizing the Shopify platform. Consistently monitored and improved site performance, resulting in a boost in sales and customer satisfaction. Demonstrated expertise in website development by adding 75 new products, ensuring seamless navigation and purchasing processes for customers.

• Utilized SQL to gather, process, and evaluate data for strategic business reporting. Conducted complex data analysis to support informed decision making, resulting in improved organizational performance and efficiency.

• Successfully conducted comprehensive data analysis and proficiently coded SQL queries utilizing join statements to extract valuable insights from persistent tables. Utilized advanced data manipulation techniques to produce accurate and meaningful results, which were used to inform critical business decisions.

Software Developer

Cognixia

• Utilized advanced data analysis skills to identify and rectify inaccuracies in a large data set with 1900 rows. Developed a comprehensive Python script to effectively display the corrected data frame and ensured data accuracy. This project significantly improved the reliability of the data set and streamlined the data analysis process.

• Leveraged SQL skills to efficiently extract, manipulate and analyze complex data sets, resulting in insightful business intelligence reports. Utilized advanced data analysis techniques to provide critical insights and support data-driven decision making for key stakeholders.

• Successfully performed advanced data analysis and proficiently coded complex SQL queries utilizing join statements to extract insights from persistent tables. Conducted ongoing evaluations and modifications to improve accuracy and efficiency of data analysis processes.

Data Analyst

• Successfully installed and configured over 100 software applications and 20 home networks, ensuring smooth operation and maximum productivity for clients.

• Reduced average ticket resolution time by 25% through efficient troubleshooting on Windows and Mac operating systems, resolving technical issues and restoring systems to optimal performance.

• Successfully resolved over 50 complex hardware and network issues for clients, contributing to an improved overall computing experience and increasing customer satisfaction.

Information Technology System Analyst

Personal Projects

Project Live Site: https://airbnb-dce23.vercel.app/ (JavaScript, React, MapBox, Tailwind CSS)
    • Reduced largest contentful paint by 600% from 2.6 seconds to 0.4 seconds by running a web performance test to identify opportunities to speed up the application

   • Refactored for best practices by validating HTML and CSS using the W3C markup validation service

• Optimized design for 8 screen sizes (desktop and mobile) using responsively app, flexbox, and media queries
  
Project Live Site: HTTPS://AMAZON-CLONE-DCE23.VERCEL.APP (Next.js, Redux, Tailwind CSS)
   • Developed and implemented an e-commerce platform modeled after Amazon with added features, including user sign-in authentication and shopping basket functionality. Designed a seamless checkout experience by integrating the Stripe API payment infrastructure, resulting in improved UI/UX

   • Designed and implemented a non-relational database schema using Firebase and Authentication, resulting in improved data retrieval efficiency for product and order information

• Created an Autocomplete (C++) program that computes the top 3 completions of any 293,147 common English words quickly
  -     Optimized run-time with over 290,000 English words using a Trie data structure to compute the top 3 completions

• Created a TrendTracker (C++) program to track information about an assortment of 3612 common English word hashtags that a person is interested in, including their top trending hashtag

Software Engineer

Boggus Ford Harlingen

• Successfully managed online customer inquiries, responding to over 100 daily emails with a focus on timely and efficient communication. Achieved a remarkable 20% conversion rate, demonstrating exceptional customer service skills and ability to drive sales through effective communication.

• Interacted with customers through email correspondence, effectively updating them on the latest vehicle releases and promotional sales offers.

• Developed and maintained advanced spreadsheet systems to monitor and analyze the effectiveness of conversational strategies, resulting in improved customer engagement and satisfaction.

Business Development Center Representative

none

Certified Pharmacy Technician

Software Engineer | Data Analyst | Frontend Engineer | DevOps Engineer | Full Stack Engineer | Loves Hackathons

I'm a Data Analyst from Las Vegas and have spent time living in Canada. I'm on the lookout for my next exciting role in either a hybrid or remote setting -- and I'm very open to relocation! 
My top skills include SQL, Python, and Tableau, and I love solving complex data analysis problems. I'm eager to find a challenging role where I can make a real difference. I can unlock hidden data treasures like a true SQL superhero! I'm always curious and enjoy exploring data to find those hidden gems. I hope to find a data playground where I can continue learning, growing, and having fun!

Connect with me! or send me an email at elepki@sbcglobal.net

My Portfolio site: https://devlepki.netlify.app |  My GitHub: github.com/dce23 | My CodePen: https://codepen.io/dce23

• Data Analyst | Leveraging Analytics to Drive Business Results
• Data-driven Strategist | Experienced in SQL, Tableau, Python, Pandas, Numpy, Streamlit, and Excel

My Tableau: https://public.tableau.com/app/profile/eric.lepki

• Full-Stack Engineer | Proficient in Python, JavaScript, C++, SQL, GIT, and Linux

I'm a programmer and experienced web developer. I have built 10+ websites using JavaScript. I have created an Interactive map of Covid cases around the world. Covid Tracker website(https://covid-19-tracker-eddf9.web.app), an autocomplete program(C++), and a trend tracker program(C++). I have competed in 5 hackathons across Texas. In one hackathon me and my team won the best AR app. 

I'm passionate about cybersecurity, software development(Front and Backend), and data engineering.  I love to learn, teach, and grow. You'll usually find me wrangling with data, programming, or keeping up with the latest software development and cybersecurity.

I was Selected as one of the participants nationwide to advance in the Quarter-finals of the 2019 Cyber FastTrack Cyber Start Game for a 5-week professional Cybersecurity development program for high-achieving college students in tech-based majors. The program was about solving increasingly difficult challenges in cybersecurity at www.cyber-fasttrack.org.

Understanding networking, routing, and web-related protocols such as TCP/IP, DNS, SMTP, DHCP, HTTP, and SNMP.

Knowledge of security issues and threat landscape attacks such as XXS, XSFR, Buffer Overflow, DDOS, Session hijacking, SYN flood, and PingFlood.

Understanding of web security mechanisms such as port 22 (SSH, SCP, and SFTP), port 443 (HTTPS), SMTP with TLS/SSL, LDAPS, FTPS, IMAP4 with SSL/TLS, POP3 over SSL/TLS, and Syslog over TLS.

taplio

The Battle

Sarah Floris, MS

Eric Lepki

Followers

Posts

Engagements

Likes

Ready to grow your LinkedIn presence?