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Manual QA Engineer (Middle) ID51808

AgileEngine Querétaro, Mexico

remote
Posted Feb 25, 2026Apply by Mar 27, 2026

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

  • Manually test web applications and AI-driven features; design and execute detailed test cases from requirements

  • Validate AI-generated outputs (test prompts, summaries, recommendations) and verify AI behavior (consistency, contextual relevance, determinism)

  • 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

  • 2+ years manual testing experience; strong test design and defect reporting

  • Proficiency with Postman and browser dev tools; UI testing know-how

  • Understanding of SDLC/STLC, QA processes, and defect analysis

  • Experience with TestRail; basic CI/CD awareness; agile ceremonies involvement

  • Familiarity with AI/ML concepts, APIs, and evaluation metrics (precision, recall, hallucination rate)

  • Good written/verbal English; ability to estimate tasks and communicate risks

Nice-to-haves

  • SSO testing; experience in performance/load testing

  • 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

  • Perform manual testing of web applications to identify bugs, glitches, and inconsistencies;

  • Develop, maintain, and execute detailed manual test cases based on product requirements and specifications;

  • Perform thorough cross-browser UI testing to ensure consistent behavior across Chrome, Firefox, Safari, Edge, etc.;

  • Validate AI-generated test cases, summaries, and recommendations produced by integrated LLMs to ensure accuracy, completeness, and alignment with project requirements;

  • Design and execute test scenarios to verify AI behavior, including prompt–response consistency, contextual relevance, and deterministic vs. non-deterministic outputs;

  • Evaluate AI model quality using defined acceptance metrics (precision, recall, hallucination rate, duplication rate);

  • Conduct manual API testing to validate request/response accuracy, error handling, and integration;

  • Use TestRail to create, manage, and track test plans, test cases, and test execution results;

  • Use Jenkins CI/CD pipelines;

  • Report and document defects clearly using the bug tracking system (JIRA);

  • Participate in daily stand-ups, sprint planning, and other Agile team meetings;

  • Review user stories and acceptance criteria to understand the scope of testing;

  • Estimate own tasks, report on risks to the team lead;

  • Collaborate with developers and other QA team members to reproduce issues and verify fixes;

  • Maintain and update test documentation as needed.

MUST HAVES

  • 2+ years of experience with manual testing;

  • Basic understanding of methodologies and SDLC and STLC (Software Development and Testing Life Cycle) models;

  • Knowledge of Testing and Quality Assurance Processes;

  • Strong experience with Test Design activities to cover a set of product requirements;

  • Knowledge of Test Design techniques;

  • Knowledge of testing methodologies;

  • Defect analysis skills and the ability to write detailed and useful defect reports with expected defect-fixing outcomes;

  • Experience with Postman (API testing) and Browser developer tools;

  • Experience with UI testing;

  • Understanding of LLM evaluation principles, including prompt engineering, output validation, and model fine-tuning cycles;

  • Familiarity with AI/ML concepts, APIs, and frameworks (e.g., OpenAI API, Azure OpenAI, LangChain);

  • Knowledge of data protection and compliance standards for AI systems (GDPR, zero-data retention, PII anonymization);

  • Experience with TestRail as a Test Management system (as a user, test execution is required);

  • Basic understanding of CI/CD process;

  • Upper-intermediate English level.

NICE TO HAVES

  • Experience with SSO testing;

  • 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.
Manual TestingWeb ApplicationsAI-driven FeaturesAgile EnvironmentAPI TestingLLM FunctionalityCross-browser UI TestingTestRailJIRAPostmanJenkins CI/CDPrompt EngineeringModel EvaluationSDLCSTLCTest Design

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