Claudio Aldana-Rosenberg
Renton,WA
Summary
I am a proven data scientist leader. During my tenure in Microsoft and Expedia I have delivered at least six Machine Learning products, ranging from search rankings, revenue optimization, customer churn, customer segmentation and recommender systems. I manage Egencia Seattle data science team mostly focused on the Hotel line of business. My background is computer science and software engineering. I am strong problem solver and entrepreneurial by nature.
Overview
4
4
Certifications
20
20
years of post-secondary education
26
26
years of professional experience
Work History
Senior Manager
Expedia
Bellevue, USA
01.2019 - 01.2021
- My mission is to scale and promote the use of Machine Learning in the Technology and Product teams.
- I manage the Seattle data science team, currently a team of ten, mostly data scientists, data engineers and analyst.
- My work is a continuation and acceleration of my previous work as Senior Data Science with the Hotel Team.
- Currently I manage a portfolio of projects focused in the following areas.
- Hotel search raking.
- Hotel search revenue optimization.
- Savings finder for Hotel.
- Policy automation for Hotel.
- Travel Manager VOC (NPS).
Senior Data Scientist
Egencia, Expedia
Bellevue, USA
01.2018 - 01.2019
- Owned four product features involving machine learning and data.
- Egencia hotel search ranking.
- Model design, development, deployment and A/B testing.
- Developed ETLs in Spark for data extraction and validation: Amazon S3, RedShift, IntelliJ IDE.
- Developed features calculations: PySpark and IntelliJ IDE.
- Trained model in Spark: MLLib , Jupyter-notebook, MLeap, LightGBM, XGBoost, RandomForest.
- Collaborated with DevOps team to deploy solution in AWS: Lambda, AWS step functions.
- Collaborated with Analytics team to define success metrics and A/B testing samples size: Adobe Omniture.
- Developed motel performance reporting: Tableau, Amazon Athena.
- Egencia savings finder for hotel.
- Opportunity sizing, model design and deployment.
- Developed features calculations: Hive.
- Trained rebooking decision engine: PySpark, Jupyter-notebooks.
- Collaborated with Dev and DevOps team to implement and deploy model in production.
- Developed model performance reporting: Tableau, Amazon Athena.
- Egencia revenue optimization in hotel search.
- Opportunity sizing, model design and deployment.
- Developed ETLs in Spark for data extraction and validation: Amazon S3, RedShift.
- Developed features calculations: PySpark and Jupyter-notebooks.
- Trained model in Spark: MLLib , Jupyter-notebook, MLeap, LogisticRegression and RandomForest.
- Collaborated with Dev and DevOps team to implement and deploy model in production.
- Collaborated with Analytics team to define success metrics and A/B testing samples size: Adobe Omniture.
- Developed motel performance reporting: Tableau, Amazon Athena.
- Egencia Dynamic Rate Cap: Opportunity sizing and design rate cap calculation.
- Collaborated with PMs and Leader teams during opportunity sizing: PySpark and Jupyter-notebook.
- Collaborated with Dev and DevOps team to implement and deploy model in production.
- I contributed to the data science practice in overall Expedia through posting in their internal ML/DS blogs.
- I contributed to improve their data science practice peer-review processes.
Data Scientist II
Microsoft
Redmond, USA
01.2015 - 01.2018
- Churn prediction model for Office 365 SMB Customers.
- Developed ETLs for data extraction and validation: Cosmos, Visual Studio.
- O Trained model in Cosmos and R: Caret package, R Studio, XGBoost, LightGBM.
- Collaborate with Office data engineering teams to deploy model in production and generate daily predictions.
- O Collaborate with Marketing, Customer Satisfaction to apply model insights: Identify product bundles with high churn and build propensity models to target marketing campaigns.
- In-application command recommender for Office client.
- Develop a segmentation model according to each user’s level of proficiency in Office.
- The pipeline process terabytes of clickstream data.
- Also demonstrated that increased proficiency is a driver of subscriptions renewals.
- Constructed an in-application recommender for Office client; the model is based on a user’s level of proficiency, used and unused commands, and similarity between users and commands.
- Identified and quantified biases of a Network Promoter Score survey for Outlook compared with other office apps; used machine learning techniques to identify drivers of NPS and quantified the prevalence across different populations.
- Also proposed a methodology to measure and correct bias.
- Participated in multiple hackathons organized by the machine learning community at Microsoft.
- More information can be found in my portfolio.
- Python, R, C#, Machine Learning.
Teaching Assistant, teaching assistant
Harvard University
Boston, USA
01.2013 - 01.2016
- 2014 data science course, grading coursework and mentoring students.
- Assisted and taught in 2017 the machine learning course, grading coursework and mentoring students.
- Developed Python notebooks with didactic examples and sample code so students can easily absorb topics such as linear regression, bias vs variance concept, cross-validation, and Random Forests.
- Mentored students on their final projects and helped them to be successful by evaluating project proposals, scheduling follow-up meetings, and grading project presentations and final reports.
- Constructed a guide to install TensorFlow on the Windows platform using Docker containers and Hyper-V.
- Technologies: Jupyter Notebooks, Python, Sklearn.
Senior SharePoint Support Escalation Engineer
Microsoft
Redmon, USA
01.2009 - 01.2015
- Dealt with the most critical and complex customer’s issues involving numerous Microsoft technologies.
- Analyzed large quantities of product and weblogs and applied visualization techniques to communicate and influence the customer to perform actions toward case resolution (implementing a number of data mining techniques).
- Significantly improved customer satisfaction among Latin American enterprise customer resulting in renewal and scale-up of premier contracts.
- Engaged the product group to resolve high-business impact product bugs that I had identified during case troubleshooting phase.
- The resolution of them, during the scale-up, improved the product localization for Spanish and Portuguese speaking customers.
- Constructed a team of engineers to expand the language support of SharePoint Online and OneDrive and as a result, customer satisfaction among Spanish and Portuguese speaking customers improved.
Senior Consultant
Microsoft
Redmond, USA
01.2006 - 01.2009
- Developed that complete business intelligence solution for an important government organization; the solution consisted of three cubes and dashboards supported by SharePoint.
- Worked with a customer’s analytics organization to understand their requirements, and finally design and implement the solution.
- Implemented CETS, an innovative collaborative law enforcement solution based on SharePoint and .NET.
- Worked on the CETS initiative from incubation to final deployment; CETS is a global Microsoft initiative implemented across the world supporting different languages and cultures.
- Modernized the home banking solution of an important bank and refactored the logging system from synchronous to asynchronous.
- Deployed the project server and project portfolio server in a major mining company.
- Collaborated with members from the major mining company define the right metrics to monitor and measure ROI of project and project portfolio.
- Designed and coded an InfoPath and SharePoint solution for a large government institution.
- Technologies: C#, Agile Methodologies, SharePoint, SQL Server, Project Server, Analysis Server, Visual Studio.
Co-founder | Software Architect
STI S.A
01.1997 - 01.2005
- Sold to Soluziona, currently Indra).
- Designed and developed a COM+ component in an ATL 2.0 library, C++, and a Windows TCP/IP library.
- This asynchronous multithread connector opens two sockets to send and receive transactions and the load spikes were managed by queueing client requests.
- Designed and built a COM+ component in ATL 2.0 library C++ to allow a connection to a proprietary mainframe system.
- The COM+ Window Service managed multiple instances of the client APIs DLL individually in a separate process with a shared state through a SQL database.
- Created domain-specific InterDev design components; specifically, design time controls developed in Visual 6.0 to read transaction definition metadata and generate code to invoke, parse, and display transaction results.
- Envisioned, designed, and coded a content management platform in Visual Basic 6.0 and ATL 2.0 library C++.
- This simple template language enabled the graphic designer to create simple and attractive pages while the page content is stored in a SQL database.
- Developed a high-performance solution to process social security contributions directly from an employer's payroll.
- Employers can upload, validate, and process payment by transferring money from their bank accounts.
Education
Master of Arts degree - Information Technology
Harvard University
01.2011 - 01.2016
Master's degree - Business
ESE Business School
01.2005 - 01.2006
Bachelor's degree - Engineering
Pontificia Universidad Católica de Chile
01.1989 - 01.1996
Master's degree - Engineering
Pontificia Universidad Católica de Chile
01.1989 - 01.1996
Certification
Deep Learning JANUARY 2017 - PRESENT
Timeline
Senior Manager
Expedia
01.2019 - 01.2021
Senior Data Scientist
Egencia, Expedia
01.2018 - 01.2019
Data Scientist II
Microsoft
01.2015 - 01.2018
Teaching Assistant, teaching assistant
Harvard University
01.2013 - 01.2016
Master of Arts degree - Information Technology
Harvard University
01.2011 - 01.2016
Senior SharePoint Support Escalation Engineer
Microsoft
01.2009 - 01.2015
Senior Consultant
Microsoft
01.2006 - 01.2009
Master's degree - Business
ESE Business School
01.2005 - 01.2006
Co-founder | Software Architect
STI S.A
01.1997 - 01.2005
Bachelor's degree - Engineering
Pontificia Universidad Católica de Chile
01.1989 - 01.1996
Master's degree - Engineering
Pontificia Universidad Católica de Chile
01.1989 - 01.1996