[Hiring] Senior QA Engineer @RYZ Labs

Role Description

Remote from Argentina or Uruguay. This is a 6-month contract role with the possibility of extension. Ryz Labs is looking for a Senior QA Engineer to join one of our client's teams. 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

• Execute manual and exploratory test passes against web and mobile releases, working from acceptance criteria, designs, and your own curiosity about where things break.
• Use browser developer tools (console, network, elements, application storage, device emulation) as a first-line diagnostic tool, not just to confirm a bug but to narrow down where it lives.
• Debug our 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.

Qualifications

• Browser developer tools: Comfortable in the developer console, able to read JavaScript errors, inspect failing network requests, check status codes and headers, poke at local/session storage, and emulate device viewports.
• React Native application debugging: Experience testing and debugging a React Native app on real iOS and Android devices as well as simulators and emulators.
• Test automation ownership: Designed and built automated test suites from scratch, not just extended someone else's.
• API testing with Postman or comparable tools: Familiarity with 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.
• Strong communication: Clear writing, explaining reasoning, asking questions, and closing the loop.
• CI/CD integration: Experience wiring automated tests into a pipeline (GitHub Actions or comparable).
• AI-assisted workflows: Actively using AI tooling in day-to-day work.

Requirements

• Experience with browser developer tools.
• Experience debugging React Native applications.
• Experience in test automation ownership.
• Experience in API testing with Postman or similar tools.
• Basic SQL knowledge.
• Familiarity with observability tooling like Datadog.
• Strong communication skills.
• Experience with CI/CD integration.
• Experience with AI-assisted workflows.

Benefits

• Remote work flexibility.
• Opportunity for contract extension.
• Work with cutting-edge technologies.
• Autonomy and efficiency in your role.
• Opportunities for learning and growth.
• Challenging projects with a team of professionals.

Company Description

RYZ Labs is a startup studio built in 2021 by two lifelong entrepreneurs. The founders of RYZ have worked at some of the world's largest tech companies and some of the most iconic consumer brands. They have lived and worked in Argentina for many years and have decades of experience in Latam. Our teams are remote and distributed throughout the US and Latam, using the latest technologies in cloud computing to create scalable and resilient applications.

• Customer First Mentality: Every decision should be made through the lens of the customer.
• Bias for Action: Urgency is critical; expect accelerated timelines.
• Ownership: Step up if you see an opportunity to help.
• Humility and Respect: Be willing to learn and treat everyone with respect.
• Frugality: Being cost-conscious helps us do more with less.
• Deliver Impact: Get things done efficiently.
• Raise our Standards: Always look to improve processes and expectations.