Marcos W.

Working as Contractor for ExxonMobil as a Data Engineer:

• Data Pipeline Development & Optimization: Developed robust ELT pipelines to support data integration and transformation processes, leveraging technologies such as Snowflake, SQL and DBT to ensure seamless and efficient data workflows.

• Mentorship & Knowledge Sharing: Acted as a technical resource for team members, providing guidance and sharing best practices to elevate the overall quality and efficiency of project deliverables.

• Legacy System Maintenance: Managed and optimized legacy systems and processes, ensuring their continued functionality while implementing improvements to align with modern best practices and business needs. Utilized tools and platforms such as SSIS, Python and SQL to support critical business operations.

• Mobile Development: Android and iOS;
• Deep experience in AWS Services;
• Database architecture.

• ELT Project Leadership: Led and served as the main developer for a comprehensive ELT project, leveraging a modern tech stack that included Airflow, DBT, Azure Data Lake Storage Gen2, Synapse SQL Pool, Python, and Azure Cloud Services. Successfully designed and implemented scalable data pipelines to streamline data integration and transformation processes.

• Cloud & Big Data Experimentation: Worked on small-scale projects experimenting with emerging technologies such as Azure Data Factory/Data Flow and Databricks with Spark, gaining hands-on experience in scalable cloud-based data processing and advanced analytics.

• Legacy System Maintenance: Maintained and enhanced legacy systems and processes using SQL Server Integration Services (SSIS) and Python, ensuring their continued reliability while identifying opportunities for incremental improvements.

Serviced a wide range of clients from personal bloggers to professional athletes, universities, restaurants and more.

• Contracted with several companies;
• Worked as a full-stack developer;
• Developed algorithm and data structures;
• Built software architecture;
• Optimized database design without duplication and complexity;
• Auto-deployment to production and staging server.

• Maintained an ERP written in PHP and Javascript/Jquery with MySQL Database;

• Developed two new ERP's modules with PHP backend and VueJs frontend;

• Developed system integrations using RESTful APIs. Some examples are Certisign's Eletronic Signature API, and Boleto (Brazilian payment method) integrations with three of the main Brazilian Banks: Caixa Econômica Federal, Banco do Brasil and Itau;

• Head of a project which goal was to migrate the entire ERP frontend using Material Design Patterns.