Valentin Leister

Analytics Engineering Freelancer und Looker Experte mit mehr als 10 Jahren Erfahrung im Bereich Daten und und Analytics/BI und vier Jahren Führungserfahrung mit Datenteams. In den letzten Jahren habe ich erfolgreich die Datenstrategie, das Team und die Infrastruktur für wachstumsstarke Unternehmen aufgebaut. Ich arbeite mit den höchsten Qualitätsstandards und etabliere die notwendigen Prozesse damit Ihre Datenprojekte und Infrastruktur auch nach meinem Einsatz den höchsten Ansprüchen genügen.

• Migrated a legacy data stack to a state-of-the art modern data stack • Hired the Analytics Team (Analytics Engineering and Data Science) • Established a version controlled, centralised metrics layer and data integrity testing • Aligned the financial reporting with the product database • Acted as central point of reference for experimental design and evaluation across all teams • Reduced Snowflake cost by over 50% • Established data literacy goals for each team and organised training sessions

Leading the Data Practice (Business Intelligence, Product Analytics, Data Science/R&D) - Trained and led a team of 5 data professionals to be among the top performers of the company - Oversaw the successful development of our key product ML Algorithms, from ideation to deployment (and beyond) - Established a culture of experimentation, gradual improvement and data-driven decision making across all functions - Built and implemented a strategy to create long term competitive advantage from data

Built and led an enterprise-level BI Practice within the resource constraints of a Series A Startup. - Built Data Infrastructure from scratch (data structure, warehouse, ETL pipe) - Rolled out Self Service Reporting and alerting for all functions (BI Tool, Reports, Uniform KPIs) - Made ROI for clients visible, tangible and easy to quantify - Boosted profilitability through a full pricing revamp, raising average MRR 1.5x and eliminating uncovered costs

- Composed, led and tracked a data driven action plan to boost EMEA quarterly gross profit by USD 4.2M, which was subsequently globalized across regions - Designed and developed the data structure and reporting framework for key market KPIs - Gathered potential sales leads through APIs and qualified them using a Machine Learning based approach - Automated PPT reports for regular strategic business planning from scratch using Python

- Analysis of complex data from multiple sources - Development, update and maintenance of reports and metrics to present actionable insights to teams across the business using Tableau, R and Excel - Technical studies and analysis - Advertiser Analysis and Optimization: Acting as go-to analytics advisor for commercial teams, providing insights and support in critical client calls - Contributing to the in-house R-Package while seeking constant improvement of existing functions

- Identification of new business opportunities to manage and grow the book of business - Cultivation of broker relations and conducting broker negotiations - Data analytics (study financial, regional/national economic trends and industry conditions)

CIB portfolio analytics, data management, process optimization

Sozialarbeit (Kinderbetreuung)

Modeling and analysis of Forex exposure hedging

Financial Modeling/Analysis

Praktikant Group Treasury im Bereich Asset Management und Capital Markets

Debt Markets, Risk Management, International Accounting, Valuation, Masterarbeit: Renditen von SMI-Optionen

Minor: Volkswirtschaft