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Natanael Rabelo

@natanaelrabelo

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Senior QA Engineer and QA Lead building agentic AI test automation for web, mobile, APIs, and data quality.

Brazil

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What I'm looking for

I’m looking for a QA role where I can build agentic AI testing and self-healing automation, strengthen shift-left practices, and deliver reliable data quality validation with strong CI/CD, accessibility, performance, and security coverage.

I’m a Senior QA Engineer and QA Lead with 5+ years of experience across manual and automation testing for web, mobile, API, data quality, and data-driven platforms. I focus on shift-left testing, accessibility, performance, and security, pairing strong QA fundamentals with practical automation.

I build agentic AI testing systems—creating natural-language-driven, self-healing test agents for end-to-end and data quality testing. At AI/R, I developed an MCP-based test generator that converts natural-language scenarios into Cypress tests, learning the application structure while automating flows.

My work also targets data migration reliability: I designed an AI agent that validates data migration tasks by comparing source and target samples, flagging exact mismatches, and generating AI summaries of discrepancies. This reduced manual comparison effort and improved accuracy—bringing work that could take up to 40 minutes down to 1–3 minutes.

Across my roles, I’ve led QA strategy and execution, collaborated closely with developers to raise quality standards (e.g., SonarQube), and delivered end-to-end and non-functional test suites. I’ve also strengthened accessibility coverage and performance testing, and integrated security scans into CI/CD pipelines to improve release predictability.

Experience

Work history, roles, and key accomplishments

Current

Senior QA Engineer

Current

AI/R Company

Jul 2025 - Present (11 months)

Created an MCP-based, self-healing test generator that converts natural-language scenarios into Cypress tests. Designed an AI agent to validate data migration by comparing source/target samples and generating summaries of discrepancies.

Cypress JavaScript Postman SQL Airflow Snowflake BigQuery CI CD SonarQube Accessibility Testing

Senior QA Engineer

Acertus

May 2023 - May 2025 (2 years)

Introduced shift-left testing and defined an automated testing strategy covering mobile and web E2E and API testing. Built Postman API test coverage, created K6 performance tests, and integrated Snyk security scans into CI/CD.

Automation Strategy Mobile Testing E2E Testing API Testing Postman Cypress Playwright JavaScript Python Jest CI CD GitHub Actions Snyk

Senior QA Engineer

Invillia

Sep 2022 - May 2023 (8 months)

Led QA for a system built from scratch by defining test strategy and quality gates with UX, DevOps, and software architecture teams. Implemented Cypress-based e2e regression and accessibility coverage, and built Postman API tests for validation across environments.

QA Leadership Test Strategy Quality Gates Accessibility Testing Accessibility Cypress Orca Lighthouse API Testing Postman React PostgreSQL JavaScript GitHub Actions Azure DevOps CI CD

QA Tech Lead / QA Engineer

Before

Jul 2020 - Sep 2022 (2 years 2 months)

Led a QA team of 7 professionals and coordinated testing activities, priorities, and risk/status communication across web and mobile projects. Implemented shift-left practices and automated regression testing using Cypress and Robot Framework, and performed mobile testing with Appium and WebDriver.

QA Leadership Regression Testing Cypress TeamCity CI CD Robot Framework Python Appium Postman JavaScript Laravel MySQL RPA Mobile Testing

Tech Support

Before

May 2019 - Jul 2020 (1 year 2 months)

Provided liaison support between end users and engineering teams by handling support calls/emails, registering and prioritizing incidents, and improving reproduction quality for faster engineering resolution.