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Sr QA Automation Engineer

Aplazo

Responsibilities

  • 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.
  • 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
  • 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

Preferred

  • 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)

Level

E2 (Senior)

Location

Mexico City or Remote (LATAM)

We're looking for a

Senior QA Automation Engineer

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

Write code

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)

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

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.