João Lucas Oliveira Hilario

Focused on delivering high-quality mobile experiences with strong expertise in iOS test automation

• Developed and maintained mobile test automation frameworks using Appium, WebDriverIO, and TypeScript, with a strong focus on iOS (XCUITest) and support for Android (UIAutomator2).
• Specialized in automating complex iOS user flows, ensuring compatibility across multiple iOS devices and OS versions.
• Actively monitored Datadog metrics to identify real-world performance issues and drive app improvements.
• Maintained and improved CI pipelines on GitHub Actions (GHA) for both Web and Mobile test automation, analyzing test reports and resolving failures on a daily basis.
• Defined and tracked test results, defect metrics, and performance regressions, maintaining high quality standards across releases.
• Anticipated delivery risks by identifying QA bottlenecks early and implementing mitigation strategies.
• Mentored junior QA analysts, enhancing team productivity and ensuring consistent test coverage and best practices.
• Conducted usability testing across platforms, with a focus on iOS and iPadOS, in addition to Android and Windows devices.
• Collaborated with cross-functional teams (Dev, Product, Design) to propose QA-driven enhancements to the iOS development process.

Led mobile test automation for a social media app built with React Native

• Spearheaded the implementation of a robust mobile automation framework using Appium, TypeScript, WebdriverIO, Cucumber, LambdaTest, and GitHub Actions, enabling end-to-end testing for both Android and iOS.
• Achieved 100% regression coverage, automating the full suite of mobile tests across devices.
• Designed and maintained a CI pipeline on GitHub Actions:
  Pulled the latest app versions directly from GitHub
  Executed regression tests on LambdaTest’s Device Farm
  Collected and delivered test results via Slack integration for instant team feedback
• Ensured rapid, stable releases through automated mobile test orchestration, reducing manual intervention and accelerating delivery cycles.
• Led and mentored a team of six QA engineers, overseeing career development plans, delivering technical training, and ensuring high-quality, on-time deliverables.

Mobile and Web Test Automation

• Developed a mobile automation framework from scratch using TypeScript, WebdriverIO, Appium, GitLab, and BrowserStack
• Designed and implemented automated regression tests for Android and iOS, focusing on the most critical scenarios
• Integrated automated tests into the GitLab CI/CD pipeline, executed after each release and before publishing to the Play Store and Apple Store
• Utilized Appium with XCUITest (iOS) and UiAutomator2 (Android) for running tests on real devices and cloud environments
• Maintained and improved web test automation using Cypress and JavaScript

• Acted as SDET in a mobile automation project using Appium, Ruby, and BrowserStack
• Led the automation team, ensuring strong test coverage with fast and reliable tests across multiple scenarios and platforms
• Built a solid test automation framework using Appium and Ruby, covering both Android and iOS environments
• Integrated BrowserStack for cross-device and cross-platform testing on real devices in the cloud
• Implemented Allure Reports for generating detailed, professional test reports
• Exported and stored test reports in Amazon S3 buckets for easy access and sharing with team members and stakeholders
• Enabled efficient analysis of test results and clear communication of project status
• Fostered a culture of quality and collaboration, delivering a high-performing application with confidence

One of the first QA engineers at the company, leading the implementation of the test automation culture

• Acted as a technical reference, driving the foundation and adoption of test automation practices.
• Developed web test automation using JavaScript and Cypress.
• Built mobile test automation with Ruby and Appium, ensuring coverage across multiple real devices.
• Automated API tests using Ruby, JavaScript, Cypress, and Httparty, validating backend functionality end-to-end.
• Used SonarCloud for static code analysis, ensuring high-quality standards across automation projects.
• Designed and evolved the mobile automation flow from local execution to a fully integrated pipeline:
  Pulled updated builds via Bitrise
  Ran tests on real devices through BrowserStack
  Delivered results directly into Slack for fast feedback and team visibility
• This optimized workflow significantly reduced manual effort, accelerated release cycles, and ensured high-performance app delivery.

Pioneered the QA practice at one of Brazil’s largest fintechs, handling a massive volume of retail financial transactions

• Served as the first QA engineer, responsible for building automation from the ground up across Web, Mobile, and API platforms.
• Built a robust web automation framework using Ruby and Selenium WebDriver, improving test agility and application reliability.
• Developed mobile automation using Appium and Ruby, ensuring high-quality user experiences across devices.
• Automated critical API testing using Ruby and HTTParty, validating key financial flows and ensuring backend stability.
• Introduced performance testing using JMeter and Java, enabling in-depth evaluation of system responsiveness under various load scenarios.
• Played a key leadership role by initiating and scaling the QA team from scratch to 16 members, spanning junior to senior levels.

Contributed to a team focused on manual and automated testing of REST and legacy SOAP APIs, as well as front-end test automation

• Performed manual testing of REST and SOAP APIs, ensuring functionality, performance, and reliability in both modern and legacy systems.
• Developed and maintained front-end automated tests using Selenium and Java, improving efficiency and reducing repetitive test effort.
• Operated within an agile environment (Kanban), promoting visibility, delivery focus, and continuous improvement across QA workflows.
• Played a key role in maintaining accurate and reliable test reporting, supporting fast feedback and decision-making.
• Proactively identified areas for process optimization, contributing to a culture of continuous quality improvement.
• Gained solid expertise in legacy system validation and test strategy design for complex application scenarios.

Started as a software development intern and transitioned into a developer role within the R&D department

• Worked with multiple programming languages including Java, Lazarus, C, and C++, contributing to various software development initiatives.
• Focused on the Research & Development (R&D) area, specifically on optimizing fiscal printer DLLs used in Brazilian retail environments.
• Developed point-of-sale (POS) applications and fiscal routine simulators, including features for invoice issuance and other tax-related operations.
• Gained hands-on experience solving complex real-world problems and delivering high-quality solutions under guidance from experienced engineers.
• Collaborated in a highly technical and mentorship-driven team environment, fostering rapid professional and personal growth.
• Built a strong foundation in software engineering, understanding both legacy systems and modern development practices in the embedded and retail domains.