Hire the Best Functional Testing Specialists
in Mexico

PERSONAL INFO * Single * Mexican * 44 years old CORE SKILLS AND EXPERTISE CONVERSATIONAL AI EVALUATION & PROMPT ENGINEERING * PROMPT GENERATION, OPTIMIZATION AND VALIDATION FOR LLMS * PROMPT EVALUATION USING STRUCTURED RUBRICS AND HUMAN FEEDBACK ALIGNMENT (RLAIF) * INSTRUCTION TUNING, FINE-TUNING SUPPORT, HALLUCINATION DETECTION, CONSISTENCY ANALYSIS * TASK DESIGN AND USER SIMULATION FOR MULTILINGUAL AI MODELS LLM AND NLP MODEL EVALUATION * EVALUATION AND SCORING OF LARGE LANGUAGE MODELS ACROSS MULTIPLE DOMAINS * BEHAVIORAL TESTING, OUTPUT COMPARISON, AND SAFETY/RED-TEAMING EVALUATION * UNDERSTANDING OF ZERO-SHOT, FEW-SHOT, COT, AND INSTRUCTION-BASED PROMPTING LINGUISTIC LOCALIZATION & CULTURAL ADAPTATION * NATIVE FLUENCY IN MEXICAN SPANISH AND PROFESSIONAL-LEVEL ENGLISH

Hello! I’m Abraham Ernesto Soriano Carreño — a flexible and tech-savvy Virtual Assistant and Project Manager with solid experience in e-commerce, travel project coordination, digital marketing, and data analysis. I’m based in Mexico and fully open to projects that involve both remote work and travel-based responsibilities. With over 9 years of hands-on experience, I’ve managed and scaled digital businesses, coordinated on-site projects, and supported clients through data-driven strategies and user-focused solutions. 🛒 E-commerce & Site Integration I build and manage online stores using platforms like PrestaShop, WordPress, and Wix, including DNS setup, hosting, design, and channel integration. I’ve launched and maintained multiple websites including: casanaumazunte.com – Vacation rental site with a direct booking engine cosmetic-nails.com – Product-based PrestaShop store impulsoshiva.com – Digital agency portfolio and service offering 🌍 Travel & Hospitality Projects I manage my own accommodation business in Mazunte, Oaxaca. This includes building direct booking websites with calendar syncs (Airbnb, Booking.com), OTA optimization, guest communication automation via WhatsApp, and digital advertising for seasonal promotions. 📊 Data & Web Analytics I have a background in systems engineering and software testing, with knowledge in tools like Selenium, Jira, and Postman. Recently, I’ve expanded my skills by connecting websites with tracking tools like Google Tag Manager, Google Analytics, and Facebook Pixel, enabling performance measurement and audience targeting across channels. 📣 Marketing & Content Creation I create social media and newsletter content using Canva, capcut, filmora, AI tools, and scheduling systems. I specialize in campaigns for hospitality and e-commerce, focusing on consistency, tone, and lead generation. ✈️ Travel-Ready & Multitasking I’m available for projects that require in-person visits, local coordination, or on-the-ground assistance, especially in Latin America. I enjoy combining my digital background with real-world execution, offering reliable, detail-oriented support. Bonus: With a personal interest and background in spiritual, gnostic, and mystical studies, I bring a calm, intentional approach to the way I work—seeking clarity, balance, and thoughtful communication in every task.

Nice to meet you all, my name is Jonathan Mercado. I'm a Senior Functional QA Tester with 5+ years of experience testing web applications, mobile apps, desktop software, banking systems, e-commerce platforms, and video games. I've completed 1,500+ hours of QA work on Upwork, including long-term testing projects, and have worked with both startups and established companies across different industries. My main focus is Functional and Manual Testing. I test products from a real user's perspective, explore different scenarios and edge cases, and provide clear, reproducible bug reports that help development teams quickly understand and resolve issues. What I can help you with: • Functional & Manual Testing • Exploratory Testing • Regression & Smoke Testing • Web Application Testing • Mobile App Testing (iOS & Android) • Desktop Application Testing • Cross-Browser & Cross-Device Testing • UI/UX and Figma Validation • Payment & Checkout Flow Testing • Test Case Creation & Execution • Bug Reporting & Documentation • Release and Production Validation I've tested products across a variety of industries and environments, including: • E-commerce and subscription platforms • Banking and financial systems • Payment and checkout flows • Web and mobile applications • Desktop applications • Video games • Healthcare platforms • AI/LLM-based products I'm comfortable working with Jira, Azure DevOps, TestRail, Testiny, BrowserStack, Figma, Chrome DevTools, BugHerd, Postman, SoapUI, and SQL databases, among other QA tools. I also have working knowledge of API testing, accessibility testing, and test automation with Playwright/TypeScript. While these aren't my primary specialization, they allow me to investigate issues beyond the UI when needed. What you can expect from me: ✓ Clear and reproducible bug reports ✓ Detailed testing of both happy paths and edge cases ✓ Strong attention to functional and UI details ✓ Clear communication with developers, designers, and product teams ✓ Experience working independently and within established QA teams ✓ A practical, user-focused approach to software quality Whether you need someone for a one-time testing cycle, release validation, or long-term QA support, I can adapt to your existing workflow and help make sure your product works as expected before it reaches your users.

An extensively experienced Quality Assurance Specialist, that brings a vast range of skill-sets to any given environment. The ability to engage effectively with stakeholders from many different sectors. Fluent in both English and Spanish, allowing me to converse across many different levels and audiences. With advanced SEO skills and knowledge, I can bring a committed and dedicated work ethic to any organisation. As a Manual and Automation Test Expert, I created the company's test suites, workflow test cases and worked closely with the development managers primary on the company's flagship products. Among custom software testing tools, I utilized the suite of software from Smart Bear and Crossbrowsertesting.com. My test suites ran over 14,000 variants, and helped the company maintain a high degree of quality during regular software releases.

Hello, If you read my profile I wanna thank you and also make you aware that my Job Success isn't based on my capacities and qualities, it's because I've offers that clients never finalize and I haven't had a job offer this year, so if you wanna give a chance to work with you I'll let you know that you won't regret it. Now please keep read my profile thank you. What I offer: Software Testing website and apps, Bug reporting (detailed bug reporting include screenshots or video), Technical Documentation. I have a B.A. in Software Engineer with more than 6 years of experience. Over that time my experience have grow to different web, mobile, and desktop applications related to various domains on different platforms. My core competency is manual testing and IU/UX test. I have strong communication and interpersonal skills to communicate with clients fluently. In between my skills are: - Test web and mobile applications - Developing of QA documentation (Test cases) - Execute test cases - Bug reporting (detailed bug reporting include screenshots or video) - Bug Tracking and Reporting with JIRA, Trello, Asana or Meistertask. - Requirement analysis - Software design based on UML and Sequence diagrams - Writing use cases - Writing test cases - Writing user and technical manuals - Web design - Web apps and software testing - Functional testing of apps My goal is to increase my knowledge with new and challenging projects. Also I have experience in writing compelling and appropriate user and technical manuals. My native language is Spanish but I can easily communicate in English, I can work in both languages. Actually I've more than five years active at Upwork, available right now to start working when you need it.

Performance Tester Engineer 18+ years Tools: Load Testing Tools: LoadRunner, Performance Center, JMeter, Gatling, Locust, K6, Load UI, LoadImpact and Neoload. Monitoring Tools: New Relic, Dynatrace, App Dynamics, SumoLogic, Splunk and Datadog. Load Testing Cloud SaaS: Flood.io Blazemeter, Octoperf, RedLine13. Automated Testing - QTP/UFT, BTP, TAM, Soap UI, Selenium, Playwright and Puppeteer. Defect Tracking - HP ALM, QC, Jira. • Experience in performance (Load/Stress/Endurance/Capacity/Failover) testing, Application Performance Management (APM) in Testing environments. • Highly experienced in extensive Performance Test Lifecycle which includes Profiling (static & dynamic analysis), and load test analysis for JVM memory/CPU/Mem/Threads/GC and tuning the application servers and database servers. • Experienced in Performance Risk Analysis, Performance Test Strategy & Planning, Capacity Planning & Review Non-functional Requirements. • Well experience in Performance Testing (Load/Stress/Endurance) using tools like LoadRunner, PC, Stormrunner, JMeter, Blazemeter, Load UI and Neoload. • Hands-on experience in Static & Dynamic Analysis and monitoring Tools like dynaTrace, Introscope, Sitescope, Cloudwatch, JProbe, VisualVM, New Relic. POC with Service Virtualization using ITKO LISA. • Collaborating the different teams (Developers, Architects, Leads, SMEs, Business/Domain Experts/ Managers) for the Performance Management Approach and mitigating the performance risks with a preemptive approach.