
Manual QA Engineer (Middle) ID51808
AgileEngine • Querétaro, Mexico
Role & seniority: Manual QA Engineer (mid-level)
Stack / tools: Web UI testing; Postman; CI/CD (Jenkins); TestRail (test management); Browser developer tools; JIRA; AGI/LLM concepts (prompt validation, evaluation metrics); OpenAI/Azure OpenAI/LangChain familiarity; GDPR/PII compliance awareness
Top 3 responsibilities
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Manually test web applications and AI-driven features; design and execute detailed test cases from requirements
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Validate AI-generated outputs (test prompts, summaries, recommendations) and verify AI behavior (consistency, contextual relevance, determinism)
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Perform API testing, participate in CI/CD quality gates, document defects, and maintain test artifacts in TestRail; collaborate with developers and QA on issues and fixes
Must-have skills
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2+ years manual testing experience; strong test design and defect reporting
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Proficiency with Postman and browser dev tools; UI testing know-how
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Understanding of SDLC/STLC, QA processes, and defect analysis
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Experience with TestRail; basic CI/CD awareness; agile ceremonies involvement
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Familiarity with AI/ML concepts, APIs, and evaluation metrics (precision, recall, hallucination rate)
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Good written/verbal English; ability to estimate tasks and communicate risks
Nice-to-haves
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SSO testing; experience in performance/load testing
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Location & work type: Flexible (remote and/or office options); hybrid/remote work available; part of an Agile team in a distributed environment
Full Description
AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.
WHY JOIN US If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!
ABOUT THE ROLE We are looking for a Manual QA Engineer to ensure the quality and reliability of web applications and AI-driven features in an Agile environment. This role is critical in validating user experiences, APIs, and LLM-powered functionality, safeguarding accuracy, compliance, and performance across releases. You’ll collaborate closely with engineering to strengthen testing practices, contribute to CI/CD quality gates, and elevate standards in both traditional and AI-focused QA processes.
WHAT YOU WILL DO
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Perform manual testing of web applications to identify bugs, glitches, and inconsistencies;
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Develop, maintain, and execute detailed manual test cases based on product requirements and specifications;
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Perform thorough cross-browser UI testing to ensure consistent behavior across Chrome, Firefox, Safari, Edge, etc.;
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Validate AI-generated test cases, summaries, and recommendations produced by integrated LLMs to ensure accuracy, completeness, and alignment with project requirements;
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Design and execute test scenarios to verify AI behavior, including prompt–response consistency, contextual relevance, and deterministic vs. non-deterministic outputs;
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Evaluate AI model quality using defined acceptance metrics (precision, recall, hallucination rate, duplication rate);
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Conduct manual API testing to validate request/response accuracy, error handling, and integration;
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Use TestRail to create, manage, and track test plans, test cases, and test execution results;
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Use Jenkins CI/CD pipelines;
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Report and document defects clearly using the bug tracking system (JIRA);
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Participate in daily stand-ups, sprint planning, and other Agile team meetings;
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Review user stories and acceptance criteria to understand the scope of testing;
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Estimate own tasks, report on risks to the team lead;
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Collaborate with developers and other QA team members to reproduce issues and verify fixes;
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Maintain and update test documentation as needed.
MUST HAVES
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2+ years of experience with manual testing;
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Basic understanding of methodologies and SDLC and STLC (Software Development and Testing Life Cycle) models;
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Knowledge of Testing and Quality Assurance Processes;
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Strong experience with Test Design activities to cover a set of product requirements;
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Knowledge of Test Design techniques;
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Knowledge of testing methodologies;
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Defect analysis skills and the ability to write detailed and useful defect reports with expected defect-fixing outcomes;
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Experience with Postman (API testing) and Browser developer tools;
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Experience with UI testing;
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Understanding of LLM evaluation principles, including prompt engineering, output validation, and model fine-tuning cycles;
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Familiarity with AI/ML concepts, APIs, and frameworks (e.g., OpenAI API, Azure OpenAI, LangChain);
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Knowledge of data protection and compliance standards for AI systems (GDPR, zero-data retention, PII anonymization);
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Experience with TestRail as a Test Management system (as a user, test execution is required);
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Basic understanding of CI/CD process;
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Upper-intermediate English level.
NICE TO HAVES
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Experience with SSO testing;
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Experience in Performance or Load.
PERKS AND BENEFITS
Professional growth: Mentorship, TechTalks, and personalized growth roadmaps.
Competitive compensation: USD-based pay with education, fitness, and team activity budgets.
Exciting projects: Modern solutions with Fortune 500 and top product companies.
Flextime: Flexible schedule with remote and office options.
Meet Our Recruitment Process
It includes main stages
- Application → Coding Challenge → Video Interview → Technical Interview or Interview with the Hiring Manager(s).
- Each step helps us understand your skills and overall fit.
- If it’s a match, you’ll receive an offer.