Sean Costello Email & Phone Number

Baltimore, Maryland, US

• Lead project development, conception, architecture and productionalization of machine learning solutions by collaborating with business stakeholders and IT.
• Collaborated with cross-functional stakeholders to gather data from various structured data sources for query development, feature engineering and training set ETL
• Apply modeling and machine learning techniques to business problems
• Effectively presented technical project details and results to diverse stakeholders
• Developed and implemented Marketing platform which facilitates the audience creation and conversion analysis for various marketing campaigns
• Concierge model generates asset retention risk scores for participants close to retirement used to prioritize volume to specialized call center team

Baltimore, Maryland, US

• Support Lead Data Scientists with end-to-end model development, EDA, productionalization and documentation.
• Analyzed large datasets to extract insights and inform strategic business decisions
• Created statistical summary reports of participant populations, providing sales valuable insights on structuring client employee benefit packages
• Spearheaded project to detect fraudulent activity in retirement account rollovers, identifying over $1M of fraudulent transactions and improving financial crimes unit detection speed

Baltimore, Maryland, US

• Partnered with data scientists, analytics product owners and other data engineers to discover, collect, cleanse, and refine the data needed for analysis and modeling.
• Migrated legacy data sources to AWS Data Lake utilizing python, Airflow, and PySpark.
• Developed ETL framework with python, PySpark, Hadoop, Sqoop, Hive/Impala, SQL, bash scripting, Bitbucket and Control-M.
• Made information available to large scale, next generation, predictive analytics applications.
• Designed robust, reusable and scalable data driven solutions and data pipeline frameworks to automate the ingestion, processing and delivery of both structured and unstructured batch data.
• Developed, implement and support the ETL data infrastructure.

Boulder, Colorado, US

Taught data science fundamentals, by leveraging real-world data sets, with a Python-based curriculum. Helping student develop an intermediate skill level to solve business problems and master the tools in statistical programming, data-driven analysis, and data visualization.

Boulder, Colorado, US

Conducted technical interviews, with prospective students for Galvanize's Data Science Immersive, covering python fundamentals, math, statistics and modeling concepts.

Denver, CO, US

• Developed electric energy asset and contract valuations for acquisitions,divestitures and tax litigation through market analysis and financial modeling.
• Counseled associates on market conditions as natural gas market specialist.
• Designed a model to forecast fuel prices utilized in proprietary electric market forecast and sold in suite of company products.
• Provided weekly natural gas market evaluation.
• Performed power market and operational analytics for proprietary power market model and numerous projects.

Houston, TX, US

• Delivered comprehensive planning strategies for the Rocky Mountain Region, fostering strong cross-functional communication to ensure alignment across all business units in the organization.
• Produced economic analyses, quarterly forecasts, annual budgets, and 5-year investment plans for Rocky Mountain region, delivering insights to upper management for strategic decision making.
• Managed complex interdisciplinary projects, including economic, development, and maintenance plans to consistently achieve production forecast accuracy of over 97%.
• Developed well maintenance tradeoff analysis, embraced by the production team, improving cash flow by over $2 million per year

Dallas, Texas, US

• Supervised on-site drilling operations, achieving significant reductions in drill times and costs while maintaining strict compliance with safety standards.
• Designed and prepared well construction plans, contributing to the successful delivery of 68 oil and gas wells in the Permian Basin and over 100 in the Uinta Basin.
• Analyzed drilling performance data to uncover insights that improved operational efficiency by over 25%.
• Leveraged multi-basin expertise to enhance drilling efficiency in new operational areas.
• Provided 24/7 support for rig operations, collaborating with field teams to troubleshoot and resolve challenges in real time.
• Hosted daily conference calls with rig supervisors and office drilling teams to ensure alignment and operational excellence.

Olathe, Kansas, US

• Prepared Geotechnical Engineering Reports and managed geotechnical investigations for the design of foundations, roads, and slope stability.
• Prepared Geotechnical Engineering reports for developer’s construction implementation.
• Designed spread footing, mat, and drilled pier foundations.
• Coordinated drill crews and rigs while determining sampling schedules and lab testing basedon project scope.
• Performed compression and tension load tests on helical pier foundations for data collectionfor foundation design.
• Performed Groundwater monitoring, well installation, and observation.

Data Science Immersive, Data Science

Master Of Science (M.S.), Geotechnical And Geoenvironmental Engineering

Bachelor Of Science (Bs), Civil Engineering