Quality Assurance Automation Engineer

DEVBORN; Argentina; Presencial; ARS 60.397.000 - 105.694.000; Jornada completa

Descripción de la vacante

DevBorn is seeking a senior QA engineer to own quality across a React Native mobile app and a Next.js web experience. You will work hands-on with real devices, logs, and APIs, and communicate clearly as the single most important non-technical trait.

The role covers testing, debugging, and continuous improvement in a fast-paced environment. Responsibilities include manual/exploratory testing, API validation, regression suite maintenance, and collaboration with engineers, product, and design.

Formación

• Test automation ownership with Playwright for web and Maestro for mobile.
• API testing with Postman or comparable tools against REST APIs behind a Node BFF.
• SQL (Postgres) and ability to read structured application logs.
• Observability tooling with Datadog for logs, dashboards and error tracking.
• Strong communication in English; work with a US-based team.
• CI/CD integration; wired automated tests into a pipeline (GitHub Actions).
• AI-assisted workflows usage to speed up testing and repro investigation.
• Experience with React Native and Next.js is a plus.

Responsabilidades

• Execute manual and exploratory test passes against web and mobile releases from acceptance criteria and designs.
• Debug React Native on real devices and simulators; read logs and use debugging tools.
• Use Datadog to triage issues, determine client-side vs server-side, attach evidence to tickets.
• Test REST APIs directly for Java/Spring Boot and Node BFF services.
• Validate auth/authorization at the API level and assess end-to-end flows.
• Write clear bug reports with repro steps, environment, logs, and screenshots.
• Build and maintain regression suites and release checklists, moving coverage toward automation.
• Leverage AI-assisted tooling to speed up test case generation and analysis.

Conocimientos

Playwright

Maestro

Postman

SQL

Datadog

CI/CD

GitHub Actions

English

Herramientas

Jest

Testing Library

Descripción del empleo

We are looking for a senior QA engineer who investigates rather than just reports. You will own quality across a React Native mobile app and a Next.js web experience, backed by Java/Spring Boot services behind a Node BFF. The work is hands-on: real devices, developer tools, logs, and APIs, not only clicking through the UI. The single most important non-technical trait we are hiring for is clear communication.

TESTING & INVESTIGATION (~60% of the role)

• Execute manual and exploratory test passes against web and mobile releases, working from acceptance criteria, designs, and your own curiosity about where things break.
• Debug the React Native application on real iOS and Android devices as well as simulators and emulators: reading native device and crash logs, using React Native's debugging tooling (Metro, the JS console, React DevTools), inspecting network traffic, working with pre-release and over-the-air builds, and reproducing issues across OS versions and device classes.
• Use Datadog (logs, dashboards, error tracking, RUM/session replay) to triage reported issues, confirm whether a bug is client-side or server-side, and attach real evidence to a ticket.
• Test REST APIs directly, not just through the UI, validating request/response payloads, status codes, error handling, and edge cases for the Java/Spring Boot services and Node BFF.
• Validate auth/authorization and role-based access at the API level, not just what is visible in the UI.
• Test service-to-service and data-pipeline behavior, e.g. confirming events land correctly downstream rather than only checking the originating call succeeded.
• Test idempotency, retries, and failure/edge-case handling in backend logic.
• Write bug reports another engineer can act on without a follow-up conversation: clear repro steps, environment, expected vs actual, logs, network calls, screenshots or recordings.
• Build and maintain regression suites and release checklists, and help move repetitive coverage toward automation over time.
• Leverage AI-assisted tooling to speed up test case generation, log analysis, and repro investigation.

COMMUNICATION & COLLABORATION (~20% of the role)

• Communicate clearly and proactively in standups, in tickets, in Slack, and in documents.
• Partner directly with engineers, product, and design during feature development rather than only at the end of it.
• Report on test coverage, open defects, and release risk in a way a non-engineer can follow.
• Surface risks, blockers, and quality concerns early rather than late, and elevate when a release should not ship.
• Close the loop: verify fixes, confirm they hold in the next build, and say so.

CRAFT & CONTINUOUS IMPROVEMENT (~20% of the role)

• Help define and evolve team standards for test coverage, bug intake, triage, and release readiness.
• Grow technical depth deliberately: automation frameworks, API testing, and reading enough of the codebase to make better guesses about root cause.
• Learn through pairing, code review participation, and documentation, and write down what you learn so the next person does not have to rediscover it.
• Bring a mindset of experimentation and continuous improvement.

REQUIRED EXPERIENCE

local/session storage, and emulate a device viewport. You use it to investigate, not just to screenshot.

• Test automation ownership. You have designed and built automated test suites from scratch, not just extended someone else's: Playwright for web, Maestro for mobile. The team's web checkout flows already run on Playwright. You know what to automate vs. cover manually, and how to keep a suite from rotting into flaky noise.
• API testing with Postman or comparable tools. Most of the services are Java/Spring Boot REST APIs sitting behind a Node BFF.
• Basic SQL (Postgres) and comfort reading structured application logs.
• Observability tooling. Familiarity with Datadog or a comparable platform for logs, dashboards, and error tracking. You can search logs for a request, follow an error, and use what you find to make a bug report stronger.
• Strong communication. You write clearly, you explain your reasoning, you ask questions when something does not make sense, and you close the loop. This is the single most important non-technical trait we are hiring for.
• CI/CD integration. You have wired automated tests into a pipeline (GitHub Actions or comparable) so they gate builds/deploys, and you know how to triage and reduce flaky tests rather than let a team start ignoring red pipelines.
• AI-assisted workflows. You are actively using AI tooling in your day-to-day work and can help the team push further in that direction.
• Professional English. You will work in English all day, in writing and on calls, with a US-based team.

NICE TO HAVE

• Enough TypeScript and React to read code and understand what a change touched. The mobile app is React Native; the web app is a Next.js monorepo.
• Comfort reading existing Jest and Testing Library unit tests well enough to tell what is already covered and what is not.
• Familiarity with feature flag and experimentation tooling (Optimizely, LaunchDarkly). A bug here is often flag-gated or specific to one variant.
• Verifying analytics and event tracking (Segment, Mixpanel, Braze) as part of a test pass, not as an afterthought.
• Exposure to mobile crash reporting (Sentry, Firebase Crashlytics) alongside Datadog.
• Familiarity with Jira and a test case management tool.
• Accessibility and performance testing exposure.
• Load testing familiarity with Gatling, Artillery, or comparable: enough to script a realistic traffic scenario against an API and read what the results are telling you.
• A working understanding of how a React Native build actually reaches a device: TestFlight, Play internal testing, over-the-air updates.

ABOUT US

DevBorn connects U.S. companies with top engineering talent from Argentina and Uruguay, with a strong focus on long-term, high-quality placements. For nearly a decade, the company has specialized in staff augmentation and staff-to-hire services, delivering senior engineers, QAs, DevOps, designers, and PMs who work in U.S.-compatible time zones. With over 150 successful placements and a 90% contractor retention rate, DevBorn emphasizes cultural alignment, English proficiency, and immediate productivity. Engineering leaders at startups and scale-ups trust DevBorn to build and extend their teams across a wide range of modern technologies and roles.