Stefan S Email & Phone Number

New York, United States

• Reduced patient wait times by 20%, measured by the decrease in average wait time per patient after analyzing appointment data and optimizing scheduling systems.
• Lowered inventory expenses by 10%, measured by the reduction in total inventory costs after implementing real-time tracking for more efficient stock management and waste reduction.
• Increased operational efficiency by 20%, measured by the reduction in task completion times after collaborating with cross-functional teams to implement business intelligence tools that streamlined processes.

New York, New York, US

• Enhanced user interaction by 15% as measured by user feedback, using GPT-based models for natural language processing, text, and code generation.
• Reduced incident resolution time for data pipeline troubleshooting by up to 20%, as measured by time logs, through simplification of algorithms and improvements using clear, concise language and effective visualizations.
• Enhanced business troubleshooting and decision-making by performing exploratory data analysis using SQL to detect anomalies and developing Python visualizations to effectively communicate the distribution of engineered.
• Successfully executed tasks based on clear verbal, written and visual instructions, ensuring alignment with project goals and delivering accurate results.

San Francisco, California, US

• Developed and maintained complex SQL queries and ETL processes for in-depth analysis of banking operations, identifying trends, patterns, and anomalies to support data-driven decision-making.
• Collaborated closely with cross-functional teams, including IT, Finance, and Risk Management, to ensure seamless execution of ETL workflows and project deliverables, aligning with company objectives.
• Designed visualizations using Python to present complex financial data and insights to non-technical stakeholders and executive teams, facilitating clear, actionable insights.

New York, NY, US

• Discovered common characteristics over 160,000 texts, and how rating correlated with different parameters. Using quantitative analysis of textual data determined semantic characteristics and content makers of most.
• Identified performance strategies and linguistic behavior based on 5,000 public talks. Visualized data to show patterns and general trends, discovered main topics and keywords using NLP techniques.
• Build a model to predict sale price based on over 60 features. Models explored included multiple linear regression and random forest.

• Implemented data-driven approaches to optimize inventory management, resulting in a 10% reduction in excess stock and improved product availability.
• Collaborated on consumer behavior analysis, utilizing data science methodologies to uncover insights that guided new product development and market expansion strategies.

London, England, GB

• Analyzed and communicated recognized patterns and trends to upper management, utilizing data-driven insights to improve monthly revenue, enhance brand recognition, and expand the customer base.
• Led a team of 6, applying effective management skills to ensure seamless collaboration and successful project outcomes.
• Deployed advanced communication techniques, improving customer service interactions and increasing customer return rates through personalized and data-informed engagement strategies.

Master'S Degree, Applied Linguistics

Bachelor'S Degree, Linguistics