Manual QA Engineer

THIS OPENING IS AVAILABLE FOR CANDIDATES IN LATIN AMERICA NOT LIMITED TO ONLY MEXICO.

Sonatafy Technology headquartered in Scottsdale Arizona is an award-winning nearshore software development company with a strong reputation. We have a dedicated in-house team of engineers offering end-to-end software solutions and supporting client development through staff augmentation. Catering to companies of all sizes and industriesincluding some of the worlds largest brandsSonatafy Technology is a trusted provider of nearshore enterprise-level cloud and mobile application software development services.

We are seeking a Senior Manual QA Engineer with strong experience testing SaaS products across multiple platforms. This role will be responsible for driving quality across all products by executing thorough manual testing validating API-driven behavior and partnering closely with engineering product and design teams. While this position is not tied to a specific domain or product experience testing modern JavaScript-based web applications and backend APIs is essential.

Key Responsibilities

Execute manual testing across multiple SaaS products including functional regression smoke and exploratory testing.
Validate API-driven functionality including request/response payloads data integrity error handling and edge cases.
Analyze product requirements user stories and acceptance criteria to create clear and effective test scenarios.
Identify document and track defects with clear reproduction steps expected results and supporting evidence.
Perform end-to-end testing of complex user workflows spanning UI APIs and backend logic.
Collaborate closely with developers product managers and designers to clarify requirements and prevent defects early.
Participate in sprint planning backlog refinement and release validation from a QA perspective.
Perform cross-browser and cross-device testing for modern web applications.
Support release readiness by validating fixes verifying regressions and signing off on production deployments.
Advocate for quality best practices and help standardize manual QA processes across teams and products.

Required Qualifications

5 years of experience as a QA Engineer with a strong focus on manual testing of SaaS or web-based applications.

Validate API driven functionality including REST and GraphQL APIs by testing queries mutations response structures error handling and data integrity.

Solid understanding of software testing principles QA methodologies and defect lifecycle management.

Hands-on experience testing applications built with JavaScript-based frontends and modern web technologies.

Ability to read understand and reason about JavaScript code to support testing and debugging efforts.

Experience working in Agile/Scrum environments and collaborating within cross-functional teams.

Proficiency using bug tracking and project management tools (e.g. Gitlab Jira Asana).

Strong analytical and problem-solving skills with exceptional attention to detail.

Clear verbal and written communication skills including the ability to document issues precisely and concisely.

Performing manual frontend testing while capturing screen recordings with clear narration to document user flows edge cases and defects for reproducibility and knowledge sharing

Producing structured test documentation and defect reports derived from recorded test sessions leveraging AI tools to support regression testing onboarding and continuous improvement

Nice to Haves

Exposure to automated testing tools or frameworks (Playwright Cypress or similar).
Familiarity with CI/CD pipelines and release workflows.
Experience testing mobile-responsive web applications or native mobile apps (iOS/Android).
Knowledge of cloud-based platforms such as AWS.
Experience working in distributed or nearshore engineering teams.

Why Work with Sonatafy

At Sonatafy youll join a community of highly skilled engineers across Latin America supporting innovative U.S.-based teams. Youll work in a fast-moving client-first environment where quality and collaboration matter. We offer competitive compensation a remote-first lifestyle and opportunities to grow your career across multiple industries and technologies.

If you have reached this point and feel you are our ideal candidate its time for you to apply! Please submit your resume in English.

Recruitment Scam Notice

Sonatafy recruitment communications will only come from @ email addresses. We do not request fees sensitive financial information or conduct hiring solely through online forms without interviews. If you receive a suspicious message contact us at .

Required Experience:

Senior IC