Aaron Castillo

Aaron Castillo

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Detail

Data Engineer / Data Scientist
Mexico
Contact Aaron regarding: 
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Full-time jobs
Starting at USD5.5k/month
Flexible work
Starting at USD15/hour
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Timeline

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Résumé

Jobs verified_user 0% verified
  • Svitla Systems Inc
    Sr. Data Engineer and Application Support Lead
    Svitla Systems Inc
    Aug 2023 - Current (2 years 11 months)
    20% time reduction on ETL and reporting processes with Python scripts. 25% increase in learning speed regarding onboarding topics by creating time-varying documentation with Javascript and HTML. I executed a LSTM neural network for Sentiment Analysis evaluation on customer reviews and corporate assessments, with outstanding results.
  • Distillery
    Sr. Data Engineer
    Distillery
    Mar 2022 - Aug 2023 (1 year 6 months)
    460% time improvement (from 23 hours to 5) by designing and developing a data pipeline in AWS Glue and PySpark for 1 TB of data processing every day. 50% time reduction (from 8 to 4 hours) on bulk data transfer activities by emulating AWS functionality (aws s3 cp command) with Spark and Scala solutions, moving 1 TB of data daily. I completed efficient and costless No-SQL solutions (in Couchbase) for sensitive data removal and fake data creation.
  • B
    Associate Data Scientist
    BBVA México
    Mar 2020 - Mar 2022 (2 years 1 month)
    12% improvement on funded accounts by creating business rules based on analysis performed on customer likelihood of interest in commercial messages via email, SMS, and push notification. 8% marketing campaign effectiveness (called Red Flags), launched for centennials and structured by a multidisciplinary team that I orchestrated, based on data published by the Mexican government regarding bank results. I was recognized by BBVA Mexico's Head of Client Solutions for the development of a market share prediction model (using Scikit-Learn and Genetic Algorithms).
  • B
    Data Architect and Product Owner
    BBVA México
    Mar 2017 - Mar 2020 (3 years 1 month)
    200% of Cloudera's performance enhancement, measured by the number of users on the platform (from 30 to 60), by using time-and-resource-efficient solutions in PySpark, Bash, and R. 100% data migration goals achieved (productive models and datasets, with their respective adjustments and validations) from Cloudera to Datio, having both Product Owner and Data Architect roles simultaneously. I successfully emulated productive activities in a non-productive environment (Cloudera) by carrying out an analytical approach on technical topics (RAM and cores used, schedules) and user assessment programs regarding best software practices.
  • Intelimétrica
    Jr. Data Engineer
    Intelimétrica
    Nov 2015 - Apr 2016 (6 months)
    20% increase in speed on bulk data transfers (from MongoDB to both PostgreSQL and MySQL) with Bash scripts. I received great comments regarding the re-design and implementation of an ETL architecture by using simple capabilities such as Linux utilities (cron, nohup), SQL/No-SQL scripts, Python (boto3), and AWS SQS. I increased the understanding of stakeholders and technical and analytical teams by establishing a committee to assist with data-related technical issues and support their data infrastructure needs.
  • M
    Jr. Data Scientist
    MIMONI LATINAMERICA,
    Feb 2015 - Nov 2015 (10 months)
    15% accuracy improvement (from 70% to 85%) on credit risk prediction models by using Genetic Algorithms for feature selection tasks. 10% increase in speed on potential slow payer identification by using the "Rumor Mill" agent-based model. I refactored a model generator system that compared performances among unaided-created models, enhancing model interpretability.
Education verified_user 0% verified
  • Imperial College London
    M.Sc. Machine Learning and Data Science
    Imperial College London
    Jun 2024 - Current (2 years 1 month)
  • N
    B.S. Computer Science
    National Autonomus University of Mexico
    Jan 2008 - Jan 2013 (5 years 1 month)