Oscar C.

Data Engineer

Oscar est un ingénieur de données senior hautement spécialisé avec 13 ans d'expérience commerciale. Il a travaillé dans divers secteurs tels que l'AdTech, la FinTech, la HealthTech et les logiciels d'entreprise, démontrant ainsi son expertise dans divers domaines.

Oscar a acquis une expérience précieuse en travaillant à la fois aux États-Unis et aux Pays-Bas. Ses compétences techniques comprennent l'utilisation de Golang, Python, BigQuery, Apache Spark sur Databricks (AWS), et Scala pour créer des systèmes logiciels robustes.

L'une des réalisations dont Oscar est le plus fier est le développement d'une idée brevetée auprès de l'USPTO, qu'il a réussi à commercialiser. Ce projet illustre son sens de l'innovation et sa capacité à combler le fossé entre le concept et la commercialisation.

Outre son expertise technique, Oscar a fait preuve de compétences exceptionnelles en matière de direction d'équipe tout au long de sa carrière, ce qui souligne encore sa capacité à fournir des résultats de grande qualité dans le cadre de projets complexes.

Principale expertise

  • Apache Spark
    Apache Spark 10 ans
  • AWS
    AWS 10 ans
  • BigQuery
    BigQuery 5 ans

Autres compétences

  • MySQL
    MySQL 13 ans
  • PostgreSQL
    PostgreSQL 13 ans
  • ETL
    ETL 11 ans
Oscar

Oscar C.

Guatemala

Commencer

Expérience sélectionnée

Emploi

  • Senior MLOps Engineer

    Sago Mini - 2 mois

    • Promoting Machine Learning models to Production on GCP

    Les technologies:

    • Les technologies:
    • Python Python
    • Vertex AI Vertex AI
  • Tech Lead / MLOps & Optimization Platform

    Occidental Petroleum (Oxy) - 4 mois

    Summary: Led design and delivery of Oxy’s Optimization Pillar MLOps platform in AWS ● Designed and implemented MLOps platform integrating AWS (S3, ECS/Fargate, SageMaker, Lambda) with Oxy’s ODAP Lakehouse ● Packaged and deployed Python optimization models (Gurobi/Pyomo) with CI/CD pipelines in Azure DevOps + MLflow ● Built PySpark ingestion pipelines from Kabal APIs, SQL Server, and PI systems into ODAP, ensuring governance and schema validation ● Collaborated with data scientists and IT to enable predictive maintenance and vessel scheduling optimization use cases ● Mentored engineers and defined role skill matrices across MLOps, DevOps, Backend, and QA

    Les technologies:

    • Les technologies:
    • AWS AWS
    • Python Python
    • Machine Learning Machine Learning
  • Senior Backend Developer

    Reddit - 5 mois

    Summary: Backend development in Golang and Python ● Developed new integrations with Notification Platform to send emails to 300k+ users ● Implemented concurrency in email send increasing performance by 98% ● Implemented Spam filters in email send increasing performance further by 46% ● Developed client support for Business Experiences team to tap into Notification Platform, making progress towards goal of deprecating integrations with legacy Mailroom messaging. ● Code reviews and various team activities

    Les technologies:

    • Les technologies:
    • Golang Golang
    • Apache Kafka Apache Kafka
  • Senior Data Engineer

    Curinos - 8 mois

    • Led data product development on the Databricks Lakehouse platform, ensuring efficient data handling and analysis;

    • Migrated data from MySQL and PostgreSQL databases using AWS Database Migration Service (DMS) to streamline data management;

    • Developed Data Pipelines using Delta Live Tables (DLT) for real-time and batch processing of data;

    • Created a Code Generation tool to automatically generate Scala code for Databricks, enhancing development speed and accuracy;

    • Proficient in Databricks, Scala, and Python, with a strong focus on scalable data engineering solutions.

    Les technologies:

    • Les technologies:
    • MySQL MySQL
    • PostgreSQL PostgreSQL
    • AWS AWS
    • Databricks Databricks
    • Python Python
    • Scala Scala
    • Data Engineering
  • Senior Data Engineer

    Clevertech - 2 années 11 mois

    • Developed a Reporting API for analyzing large-scale advertising campaigns (Golang, BigQuery)
    • Created an Advanced Query Tool in Golang for complex SQL queries, reducing processing time by 50%
    • Implemented Data Modeling for forecasting TV Ads performance to extrapolate impressions, increasing revenue by 20%
    • Debugged and improved complex queries in BigQuery, reducing overall query complexity
    • Enhanced collaboration with the Data Science team by serving as an interface with the Backend team

    Les technologies:

    • Les technologies:
    • Golang Golang
    • SQL SQL
    • Data Engineering
    • BigQuery BigQuery
  • Co-Founder and CTO

    Sciencesheet - 1 an 8 mois

    • Developed Codegen for ML pipelines (Spark, Scala, Python), accelerating data science processes by 10x
    • Invented and patented Codegen technology for processing millions of spreadsheet rows in Spark using Excel formulas
    • Launched a startup from idea to market within one year
    • Increased market reach by developing plugins for Google Sheets and Microsoft Excel
    • Successfully developed the AWS Backend using Sagemaker Autopilot, Lambda, EC2, SNS, and SES

    Les technologies:

    • Les technologies:
    • AWS AWS
    • Python Python
    • AWS Lambda AWS Lambda
    • Scala Scala
    • AWS EC2 AWS EC2
    • Hadoop Hadoop
    • Microsoft Excel Microsoft Excel
  • Data Scientist / Engineering Manager

    PayPal (Xoom) - 3 années 9 mois

    • Tech Lead for Data Science and Engineering team (Spark, Scala, Python)
    • Managed a team of five data scientists and data engineers
    • Developed a Locations indexer, doubling the speed of finding bank branches in India
    • Increased market coverage for the Sendmoney product by supporting FP&A analyses in Spark instead of Excel
    • Enhanced the effective reach of push notifications by 20% through segmentation analyses in Spark

    Les technologies:

    • Les technologies:
    • Apache Spark Apache Spark
    • Python Python
    • Scala Scala
    • Data Engineering
    • Team Leading
    • Microsoft Excel Microsoft Excel
  • Cloud Engineer

    Mendix - 3 années 5 mois

    • Developed the Mendix Cloud platform using a Mendix code generation tool, streamlining the development process;

    • Architected robust security protocols for the Mendix Enterprise Cloud Platform, ensuring data protection and compliance;

    • Automated parallel firewall installation and configuration across thousands of cloud nodes, enhancing security and operational efficiency;

    • Reverse-engineered Mendix code generation to reproduce applications using the open-source WebDSL language, expanding platform versatility and open-source integration.

    Les technologies:

    • Les technologies:
    • AWS AWS
    • Python Python
    • Data Engineering
  • Summer Intern

    Google - 3 mois

    • Conducted data mining on a Git repository containing 70 Apache projects, extracting valuable insights for analysis;

    • Presented the project findings at ApacheCon US in Atlanta, showcasing expertise and contributing to the open-source community.

    Les technologies:

    • Les technologies:
    • Apache Spark Apache Spark
    • Data Engineering
    • Git Git

Éducation

  • Maîtrise ès sciencesComputer Science

    Delft University of Technology · 2009 - 2011

  • Maîtrise ès sciencesManagement and Technology

    Delft University of Technology · 2007 - 2009

  • Maîtrise ès sciencesManagement and Technology

    Delft University of Technology · 2007 - 2009

  • License ès sciencesComputer Science

    Universidad Francisco Marroquín · 1997 - 2002

Trouvez votre prochain développeur en quelques jours et non sur plusieurs mois

Dans un court appel de 25 minutes, nous voulons:

  • Comprendre vos besoins en développement
  • Vous expliquez comment nous allons vous mettre en relation avec le développeur le mieux qualifié pour votre projet, sélectionné avec soin
  • Vous indiquez nos prochaines démarches afin de vous trouver le meilleur développeur, souvent en moins d'une semaine

Contactez-nous