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Martin Tobar

@martintobar

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Data Engineer at PROS Inc. who cut Databricks ETL runtimes up to 6x for an airline SaaS platform.

Ecuador

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At PROS Inc., I built and scaled Databricks and PySpark pipelines for Group Sales Optimizer, a group-sales and dynamic-pricing SaaS platform used by international airlines. I delivered curated Delta tables to customers through Delta Sharing and cut ETL runtimes up to 6x.

I also shipped features across Java/Spring Boot microservices and connected them to the data platform with Kafka events. Earlier, I built machine-data ingestion and operational reporting tools at Golderie Trading, along with backend applications as a freelancer.

Experience

Work history, roles, and key accomplishments

Software Engineer II (Data and Back-End)

PROS Inc.

May 2024 - May 2026 (2 years)

Owned hourly multi-task Databricks Lakeflow Jobs pipelines with PySpark stages, scaling data platform across airline tenants and delivering gold tables via Delta Sharing. Shipped Java/Spring Boot microservice features and Kafka event integrations, and built CI/CD pipelines that cut release time by 95%.

Databricks PySpark Azure Delta Tracking Java Spring Boot Kafka Avro Liquibase SQL Azure DevOps CI CD GitHub Co Pilot Windsurf BDD Cucumber Unit Testing Integration Testing

Back End Developer

Golderie Trading

Mar 2023 - Oct 2023 (7 months)

Built real-time machine data ingestion pipeline using Siemens S7 PLC, Node-RED, and Firebase, and deployed Flask web platform on GCP Cloud Run. Developed WhatsApp bot for operational KPIs and created Power BI dashboards for various departments.

Siemens S7 Node RED Firebase Flask GCP Cloud Run SQL Power BI Python WhatsApp API

Software Developer Freelancer

Self Employed

Jan 2021 - Mar 2023 (2 years 2 months)

Developed Android application for logistics and quality-control workflows, built Flask-based supplier portal for purchase order tracking, and created Python automation scripts for internal business processes.

Android Flask Python Automation SQL