Profilbild von Sebastin VillarroelGuerra Senior Data Executive | CTO | CIO | Data Engineering | Analytics | Data Science aus Berlin

Sebastián Villarroel Guerra

nicht verfügbar bis 31.12.2024

Letztes Update: 20.06.2023

Senior Data Executive | CTO | CIO | Data Engineering | Analytics | Data Science

Firma: Okolico Ventures UG (hbf)
Abschluss: Industrial Engineer
Stunden-/Tagessatz: anzeigen
Sprachkenntnisse: deutsch (verhandlungssicher) | englisch (verhandlungssicher) | spanisch (Muttersprache)

Dateianlagen

Sebastian-Villarroel-Resume_200623.pdf

Skills


Business Expertise, mainly in Technology, Analytics, and Data Science:

- General company foundation process, based on my experience in building Coya from day one. Strategy, business planning, hiring
- Act as a business partner to C-level in terms of data and technology topics
- Creating change by implementing a data-driven culture across the organisation
- Technical Architecture Design
- Build teams and technical processes
- Data Strategy design and implementation

Technical Expertise:
- Customer analytics, 360° review, segmentation
- Clustering, regression methods applied to business problems.
- Data engineering, integration to third-party systems, like CRM
- Data visualisation
- Product analytics
- CLTV analysis
- Marketing analytics, budget optimisation and clever campaign cost controlling

Tools, programming languages, and cloud (relevant experience to date)
- AWS, Google Cloud
- Dbt, Airflow
- Looker, Tableau
- Python, Terraform, Bash, and of course, SQL.
- Snowplow, Google Analytics
- Redshift, Exasol, BigQuery

Projekthistorie

03/2023 - bis jetzt
Head of Data Engineering & Architecture
Orange Business Services GmbH (Internet und Informationstechnologie, 50-250 Mitarbeiter)

I joined Orange Business to learn a new industry and to manage a group of 8 great data engineers. My responsibilities are developing commercial and technical direction of the data engineering services and managing customer relationships.

10/2022 - bis jetzt
CEO
kusten.io (Internet und Informationstechnologie, < 10 Mitarbeiter)

www.kusten.io is a service that allows companies to optimize their marketing budget. Our experience is that 20% of it could be better allocated, which results in a reduction of CAC or an increase in reach.

01/2023 - 02/2023
Head of Data
Ride GmbH (Banken und Finanzdienstleistungen, 10-50 Mitarbeiter)

I have joined Ride to help them in their mission to democratise wealth. In my short tenure, I've defined an analytics roadmap, set the analytical infrastructure ( terraform, Dbt, Airflow, Preset), and built two pipelines and a management dashboard to steer the performance of the new product launch.

10/2021 - 11/2022
Freelance Data Engineer
World-wise Music Label (Medien und Verlage, 1000-5000 Mitarbeiter)

Top Music Label Worldwide: Revamping a data platform and processes using Airflow on Google Cloud and Big Query for a worldwide music label (60+plus pipelines, software upgrade and server consolidation). I have set up a staging/production development flow (CI/CD) and reduced the onboarding from 2 months to 3 days by consolidating the access to cloud resources. I have trained data analysts and onboarded new data engineers. I have integrated a new ERP into the different reporting platforms and two CRM systems.

Tech Stack : Google Cloud, Python, BigQuery, Airflow Composer, Kubernetes, Docker, PostgreSQL, GitLab, GitHub, CI/CD, SQL, Linux, SQL
 

Reference

"Sebastian ist bei uns seit Oktober 2021 als Data Engineer im Einsatz und hat uns dabei geholfen, die gesamte interne Plattform “generalzuüberholen”, mit modernsten Technologien auszustatten sowie die internen Prozesse zu refactoren. Er übernimmt sehr gern Verantwortung und leistet mit seiner starken technologischen und methodischen Kompetenz einen großen Mehrwert für uns. Durch seine zusätzlich menschlich super angenehme Art und seine proaktive Arbeitsweise unterstützt er uns prima, wir sind sehr mit seinem Projekteinsatz zufrieden."

07/2016 - 07/2021
Founder / Chief Information Officer
Coya AG (Versicherungen, 50-250 Mitarbeiter)

An insurance company that started selling insurance in the summer of 2018 after two years of preparation and legal setup
Achievements/Tasks
From day one, the Founder: set up many aspects of the company and hired engineers and other non-technical personnel. Finally, in 2018, we received the insurance license from the German Financial Supervision Authority (BaFin). I had entire personnel and
budget management of engineering and analytics (7 million Euros over three years)
From Q4 2019 onwards, I focused on bringing data topics to my c-level colleagues, team leads, and employees.
I led data science initiatives and automation projects, including claims settlement automation, saving thousands of human hours.
 

Tech Stack : Amazon Web Services (AWS), Python, Looker, SQL, Redshift, Lambda, PostgreSQL, Airflow, Sagemaker, Linux, Snowplow, Google Analytics


01/2016 - 06/2016
Head of Business Intelligence
Zenguard GmbH (Internet und Informationstechnologie, 10-50 Mitarbeiter)

An internet security company providing anonymous VPN, safe browsing and other services to millions of users.

Achievements/Tasks

Setup of the roadmap, hiring 3 data engineers, and management of six engineers. Successful research on user mobility, to launch a new product. Significant reduction of technical debt: clean up redundant code and data stores.

Tech Stack : Google Cloud, Python, BigQuery , SQL, Tableau, Luigi, Linux, Google Analytics


Contact: on request

06/2014 - 12/2015
Several Analytics Positions
Kreditech Holding SSL GmbH (Banken und Finanzdienstleistungen, 50-250 Mitarbeiter)

Kreditech was a digital lending start-up that operated in 8 countries. Hired as BI Analyst, promoted to Team Lead BI Finance after 12 months

Achievements/Tasks

- Setting up financial and portfolio reports, which secured investments and debt financing up to 200 million USD.
- Implementing a credit business financial statement following IFRS standards for audit purposes and investors.
- Reducing the BI architecture footprint by consolidating servers and data stores.
- Significant improvement of data quality and met local regulator requirements.

Tech Stack : On-prem, Exasol, SQL, Pentaho, Tableau


04/2009 - 05/2014
Several Analytics Positions
Allianz Global Corporate & Specialty SE (Versicherungen, 1000-5000 Mitarbeiter)

As a data quality analyst, I improved the data quality of key data sets for the actuarial team and designed a data migration strategy to consolidate 25% of the business portfolio.

As data governance analyst: Implementation of a Data Governance Framework, which included data quality and data change management guidelines, quality performance indicators and related software implementation.

As BI Specialist: upgrade nine databases, set up a virtual client for my colleagues based outside Europe and set up a deployment process. Implementation of ETL processes and reports.

Tech Stack : On-prem, Oracle, SQL, Cognos 8.2, OWB, Unix


01/2007 - 09/2008
Research Associate - Investment Banking
Evalueserve

Evalueserve is a leading global analytics partner to Fortune 1000 firms.
Achievements/Tasks
I led a 3-member team of analysts, providing quality analytics support to a German leading investment bank, focusing on equity
research topics.
Eliminated a nearly 10% error rate, thanks to a data quality management tool we implemented.
Team Recognition: "Best Team Award" and "Special Merit for Valuable Contributions to Quality & Productivity."

Contact: on request

Reisebereitschaft

Verfügbar in den Ländern Deutschland

Sonstige Angaben

LinkedIn: https://www.linkedin.com/in/sebastianvillarroel/
Profilbild von Sebastin VillarroelGuerra Senior Data Executive | CTO | CIO | Data Engineering | Analytics | Data Science aus Berlin Senior Data Executive | CTO | CIO | Data Engineering | Analytics | Data Science
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