Open to opportunities

Tito Arevalo

@titoarevalo

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Software Engineer specializing in Workday integrations and enterprise automation.

El Salvador

Message

What I'm looking for

I’m looking to build secure, scalable enterprise integrations—especially Workday Studio/Extend—where I can own end-to-end workflows, improve reliability and performance, and collaborate cross-functionally to automate HR and financial processes.

I’m a Software Engineer with strong expertise in Workday integrations and enterprise solutions. I architect and deliver custom Workday Studio and Workday Extend integrations that trigger business events, update Workday data, and automate HR and financial processes.

At TELUS Digital, I’ve owned advanced Workday reporting, calculated fields, Business Process workflows, and Workday security configuration (Security Groups and Integration System Users – ISU). I also design end-to-end integration flows between Workday and Workato to exchange data with external platforms like Zuora and Google BigQuery for analytics and reporting.

Previously at LifeMiles (Avianca Loyalty Program), I built distributed backend systems using microservices and event-driven AWS patterns. I migrated Java 8 systems to Java 21/17, delivered secure payment and refund platforms, and consistently applied TDD and SOLID principles to improve reliability and maintainability.

Experience

Work history, roles, and key accomplishments

Current

SaaS Developer

Current

TELUS Digital

Oct 2024 - Present (1 year 8 months)

Architected and delivered Workday enterprise integrations (HR, Payroll, Accounting) using Workday Studio/Extend and REST/SOAP APIs to automate core HR and financial processes. Built Workday reporting, calculated fields, BP Framework workflows, and secure security configurations, and designed end-to-end data flows with Workato to Zuora and Google BigQuery.

Workday Studio Workday Extend Workday Calc Fields Workato REST APIs AWS Event Driven Integrations Zuora Google BigQuery

Software Developer & Designer

LifeMiles (Avianca Loyalty Program)

Aug 2021 - Oct 2024 (3 years 2 months)

Developed distributed payment and refund backend systems using microservices and AWS event-driven architecture (EventBridge, Lambda, SQS/SNS) to support asynchronous refund flows and optimize costs. Modernized and stabilized legacy Java systems by migrating Java 8 to Java 21 and upgrading Activiti modules to Java 17, applying SOLID and test-driven development practices.