Daniel Arantes
Senior Cloud Operations Engineer @Resmed
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WORK HISTORY
Senior Cloud Operations Engineer @Resmed
Halifax, NS, CA
EDUCATION
ETFES - Escola Técnica Federal do Espírito Santo
Eletro
Universidade Federal do Espírito Santo
BSC, Computer Science
Coursera
Data Science
Saint Mary's University
Master of Science - MS, Computing and Data Analytics
SKILLS
ABOUT DANIEL ARANTES
Bachelor in Computer Science & Msc. in Computing and Data Analytics with over 20 years of experience in the IT industry. High reputation for problem resolution and designing/building solutions that last in the realm of applications centered in data processing (see Recommendations section).Worked 12 years for IBM supporting large USA based clients in the Industrial and Energy & Utilities sectors with technical and client facing roles, including: Developer, Administrator, Oracle Logical DBA and Application Architect. • Proven experience in Oracle databases (over 10 years), including architecture, tuning, compression and parallelism.• Proficient in SQL (including windowing functions) and PL/SQL (Oracle).• Proven experience in performance troubleshooting and problem resolution both at database and application level.• Proficient using Linux and Unix environments.• Over 5 years of experience in R programming.• Open Group Expert (Level 2) certified IT Specialist.• Proven ability to lead complex technical projects.• Proficient in shell scripting.• Extensive knowledge (15 years) in PeopleSoft Administration and Development.My areas of expertise are database design, performance tuning of ETL processes and queries, data analytics using R and Python and PeopleSoft administration and development.A few accomplishments:• Successfully defined and implemented ways to manipulate over 50 million individual transactions (over 150 million rows) of Atlantic Lottery Corporation (ALC) game’s data to perform association rules analysis (basket analysis).• Implemented a fast algorithm using data.table and vectorized R operations to identify individual purchases (multiple items for the same unknown client) on historical data at ALC for association rules analysis.• Designed and implemented ETL and reporting solutions for large Data Warehouse installations on Oracle making data available for critical month closing activities between 6 and 10 hours sooner than previous implementations.
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