Marcos S.
Data Engineer

Skills

Node.js

Java

Amazon Aws

React

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Hire Marcos S.

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Bio

With over 18 years of experience in the Information Technology field, extensive expertise has been gained across various roles, including IT Analyst, Infrastructure and Support, and System Analyst with a specialization in Java and PHP. Presently engaged as a freelance Data Engineer and Data Scientist focusing on large-scale projects within the e-commerce, marketing, and education sectors. Proficiency encompasses languages such as R, Python, Scala, Java J2SE, Java EE, PHP Laravel, SQL, and NoSQL. Notable skills include deploying datalakes, ETL, and ELT processes utilizing tools like Apache Hadoop, Hive, Spark, Zookeeper, Kafka, Databricks, Azure, AWS, and GCP.

Data Engineer
9/1/2017 - Present

Developed expertise in creating clustered instances of Spark and Hadoop tools. Proficient in the creation and modeling of Oracle SQL Databases as well as NoSQL databases like Cassandra and MongoDB. Experienced in orchestrating Kubernetes, managing PODs, and building pipelines with Apache AirFlow. Facilitated seamless connectivity between AWS and GCP services. Skilled in data ETL processes using Pentaho PDI and automating data extractions and persistence.
Web Developer
8/1/2016 - 7/1/2017

Developed and maintained the Magento2 E-commerce Platform utilizing PHP Zend Framework for custom module development. Created responsive frontends using HTML5, CSS3, Javascript, Jquery, KnockoutJS, and Underscore. Implemented backend systems with PHP Laravel, PHP Symfony, Java PrimeFaces, Java Spring, and C#.Net. Integrated ERP systems with Magento2, ensuring smooth data flow across platforms. Developed database triggers and stored procedures for Oracle, MYSQL, and POSTGRESQL. Deployed infrastructure for the E-commerce platform on AWS Amazon EC2 Cloud utilizing Linux operating systems, including AMZ Linux and RedHat Centos7.
Java Systems Analyst
12/1/2014 - 11/1/2015

Developed and maintained an e-commerce platform using Java EE. Managed and updated Google Tag Manager tags, including pixels and lead tags. Created responsive and adaptive websites utilizing HTML5, CSS3, and JavaScript. Performed integration of third-party systems such as Chaordic and Google systems, including Tag Manager and Google Shopping Merchant. Employed technologies and frameworks such as Java, JEE, JSF, JSON, Oracle, Quartz, Angular, and JavaScript.
Digital Development and Information Technology Coordinator
7/1/2013 - 8/1/2014

Coordinated development teams specializing in C# and PHP, as well as managing IT support functions. Demonstrated expertise in web development, utilizing ASP.NET C#, PHP5, HTML5, CSS3, and NodeJS, along with proficiency in JavaScript including jQuery. Successfully developed and implemented the Apache Solr Search Engine, leveraging PHP and Python for integration, and worked extensively with SQL Server and Oracle MySQL databases.
Oracle Analyst
11/1/2012 - 6/1/2013

This role involved the development and support of extensive PL/SQL Oracle Database Management System (DBMS) functionalities, including creating and managing packages and triggers. Additionally, it demanded proficiency in developing and supporting Oracle FORMS applications, ensuring robust system design and functionality. Key accomplishments included optimizing database performance through advanced PL/SQL coding techniques and enhancing user interface and experience via Oracle FORMS customizations. This position required strong analytical skills to troubleshoot and resolve database and application issues, contributing to the overall stability and efficiency of the LDPS System.
Development Consultant
6/1/2012 - 11/1/2012

Gained extensive experience in the development and support of the SENIOR® Sapiens ERP system, showcasing proficiency in creating and managing PL/SQL procedures and triggers within Oracle DBMS. Demonstrated advanced skills in developing web applications using ASP.NET MVC and C#, ensuring robust and scalable solutions. Acquired solid expertise in generating detailed and insightful reports through Crystal Reports IX, enhancing data presentation and decision-making processes.
IT Coordinator
8/1/2011 - 5/1/2012

Developed proficiency in PHP and C# through the development of Academic Management Systems. Held responsibility for IT operations and the IT team, including Windows Server Administration with Active Directory. Acted as a Red Hat Linux Server Administrator, managing Squid Proxy and Firewall. Gained expertise in application development using C# and .Net WebForms. Provided web system support for academic systems and user support. Led the implementation and expansion of logical network and data infrastructure. Implemented a management visualization system aimed at reducing costs and expenses. Introduced a Strategic Management System and the PDCA Methodology to enhance operational efficiency.
Information Technology Team Coordinator
8/1/2008 - 2/1/2011

Coordinated both support and development teams, driving projects to successful completion. Developed the company's website and entrance exam system using PHP, ensuring robust and scalable applications. Led application development efforts utilizing C#, .NET, and ASP, showcasing strong command in backend and web development. Managed contracts regarding operations and telecommunications, as well as IT services, ensuring optimized and cost-effective solutions. Administered Windows Server environments, including Active Directory, Internet Information Services (IIS), and SQL Server 2005, exhibiting expertise in enterprise-level IT management. Managed Linux Red Hat servers, handling services such as Squid, Proxy, Qmail, and Firewall configurations. Provided support for the academic system and general user support, maintaining high levels of user satisfaction. Implemented and expanded network infrastructure to support growing data demands. Spearheaded the implementation of a management system aimed at cost reduction, demonstrating strategic planning skills. Enforced an IT management system based on the PDCA (Plan-Do-Check-Act) cycle, driving continuous improvement in IT processes and services.