Sr QA Automation Engineer

Senior QA Automation Engineer

• Level: E2 (Senior)
• Location: Mexico City or Remote (LATAM)

About the Role

We're looking for a Senior QA Automation Engineer to elevate engineering quality across Aplazo. This is an engineering role—you'll write production-grade code and maintain automated tests independently; improve existing suites and coverage in your own area, adapt and improve test plans for medium/large features, execute end-to-end with little guidance and give clear feedback to engineers on quality.

You're an engineer who's passionate about quality and believes the best way to achieve it is by empowering every engineer to test better.

At E2, you lead quality initiatives for your squad and mentor engineers on testing practices.

What You'll Do

Mentor engineers on quality — Pair with engineers to improve their testing practices; TDD, and test design

Own test strategy — Define testing approaches for your squad

Write code — Build production-grade automation, testing tools & test scripts

Drive quality metrics — Instrument and track quality signals (coverage, flakiness, test times, defect rates); use data to prioritize improvements

Leverage AI for quality — Use AI to generate tests, identify coverage gaps, and accelerate quality feedback loops

Participate in on-call & incident response - Troubleshoot production issues using logs, metrics, and observability tools; investigate services and infrastructure, identify or narrow down root causes, perform appropriate operational actions, and escalate incidents to the right owning team with clear technical context.

Shift quality left — Help engineers catch issues earlier through better design, testability coaching, and fast feedback

What We're Looking For

Technical

3 - 5+ years as a QA Automation Engineer

Strong programming skills— able to write production-grade, maintainable code, not just test scripts. Proficiency in at least one modern programming language (e.g., Java, JavaScript/TypeScript, Python, Dart) and the ability to quickly adapt to others for QA tooling.

Hands-on test automation experience — experience designing, building, and maintaining automated tests across Web, API, and/or Mobile using tools such as Selenium, Cucumber, Appium, Rest Assured, Playwright, Maestro | Patrol, or equivalent technologies.

Deep expertise in test architecture: unit, integration, contract, and e2e testing strategies

Proficient with CI/CD, integration and test automation with Jenkins pipelines and GitHub Actions for solution builds and deployments.

Familiar with our stack or similar: Java/Spring, Angular/Flutter, AWS, PostgreSQL, MongoDB, Datadog, Postman, Bruno and JMeter

Familiar with on-call process like production trouble shooting (reading/matching logs & metrics, using observability tools like Datadog & taking with engineers appropriate mitigation actions and escalating incidents right away (accordingly to the severity)

AI Fluency

Uses AI tools to generate test cases, identify edge cases, and accelerate test development

Applies AI to detect flaky tests, analyze coverage gaps, and prioritize testing efforts

Builds or champions AI-powered quality tools for the team

Stays current on AI-assisted testing capabilities and best practices

Quality Philosophy

Believes engineers should own quality—your job is to enable them, not replace them

Thinks about testability during design, not just after implementation

Pragmatic about test coverage—you optimize for confidence

Understands testing and when to break the rules

Leadership & Communication

Experience in coaching engineers and changing team practices

Writes clear documentation and runbooks

Fluent in Spanish; working knowledge of English for cross-team collaboration

Mindset

Product first, quality specialist second

Passionate about developer experience—you build tools people love to use

Strong ownership; you drive quality improvements end-to-end

Curious about fintech-specific quality challenges (financial accuracy, compliance, fraud)

Nice to Have

Experience in fintech, payments, or high-reliability systems

Background in mobile testing (Flutter, iOS, Android), web testing(HTML/Angular/JS, backend testing (Java,Spring boot, Golang)& testing frameworks like Maestro or Patrol.

Performance and load testing experience

Contract testing (Pact) or API testing expertise

Contributions to open-source testing tools or frameworks

Experience managing a mobile device farm (Sauce Labs)

Our Stack

• Languages: Java, Python, Javascript
• Frameworks: JUnit, TestNG, Playwright, Selenium, Appium, Maestro/Patrol
• API Tooling: Postman/Bruno, Jmeter/LoadRunner, Rest Assured

• CI/CD: Jenkins, GitHub Actions, CodeMagic
• Infrastructure: AWS, Pulumi
• Observability: DataDog

Why Aplazo

Our mission is to empower financial access and opportunity across Latin America through fair, simple, and transparent solutions. Our tech vision: be the most beloved and innovative tech organization in Latin America.

We're a Series B fintech growing fast—quality is critical when you're handling millions of financial transactions. You'll shape how 50+ engineers think about and practice quality.