Hire the Best Software QA Testers
in Brazil

Hi, I'm Ludmila Ivo, your go-to QA tester and problem-solver! I love breaking things (in a good way) to make sure they work perfectly. With a sharp eye for detail, I dig deep into apps and platforms to uncover bugs, spot areas for improvement, and ensure a smooth user experience. Here’s what I bring to the table: ✅ QA Testing & UX Insights – I test web and mobile apps across different industries (games, education, social media, e-commerce, finance, and more). If there's a flaw, I'll find it! ✅ Translation & Localization – English ⇄ Brazilian Portuguese translations with a natural, culture-friendly approach. ✅ Tech-Savvy & Detail-Oriented – Experienced with tools like Jira, Trello, Notion, Slack, HubSpot, and more. ✅ Payment Systems Expertise – Familiar with Brazilian methods like PIX, boleto, Mercado Pago, and PayPal. I’m proactive, curious, and always looking for ways to improve the user experience. Let's work together to make your project better! 🚀

Manual QA Tester from Brazil focused on games, websites, and mobile/desktop applications. Experienced in identifying bugs, usability issues, interface inconsistencies, navigation problems, and performance issues across different platforms. I have experience with exploratory testing, functional testing, UI/UX validation, and detailed QA reporting with screenshots, reproduction steps, and clear feedback to help improve product quality and user experience. I also create organized reports and help teams identify problems efficiently while maintaining clear communication and attention to detail throughout the testing process. I’ve worked with different workflows and always pay close attention to quality, deadlines, and user experience.

QA Tester and Product-oriented freelancer with experience in web and mobile app testing, AI chatbot evaluation, prompt review, and structured bug reporting. I help teams improve product quality by testing user flows, identifying bugs, reviewing AI-generated responses, and documenting issues in a clear and actionable way. My background in technology, product analysis, and software testing allows me to evaluate not only whether something works, but also whether the experience makes sense for the user. I can help identify unclear flows, missing information, edge cases, language issues, and opportunities to improve the product experience. My main areas of support include: ▪ Manual testing and bug reporting for web and mobile applications ▪ AI chatbot testing and LLM response evaluation ▪ Prompt review and improvement suggestions ▪ Portuguese language quality checks for AI-generated content ▪ Functional testing focused on user flows, usability, and edge cases ▪ Test case creation and structured QA feedback ▪ Clear bug reports with reproduction steps, severity, screenshots, and recordings ▪ Data organization, internet research, and document formatting I am organized, detail-oriented, and easy to work with. I communicate clearly, take deadlines seriously, and always aim to make the process smoother for my clients. If you need someone who can test carefully, evaluate AI responses, improve prompts, document issues clearly, and bring a product-minded perspective to QA tasks, I’d be happy to help. Currently available for AI chatbot testing, prompt review, app testing, bug reporting, functional testing, QA support, and ongoing freelance projects.

I am a QA professional in transition with over 7 years of experience in legal analysis, fiscal auditing, and business process management, now focused on helping companies improve the quality and reliability of their web applications. My background gives me a strong eye for detail, process validation, and clear documentation, which I apply directly to software testing. I combine manual testing with the foundations of test automation, always aiming for structured, repeatable, and well documented testing. Experience with manual testing for web applications Knowledge of test case design, bug reporting, functional and regression testing API testing using Postman and Insomnia Initial experience with test automation using Cypress, Playwright, and CodeceptJS Familiar with Jira and agile workflows Strong analytical skills and attention to detail from legal and tax auditing work Used to validating processes, identifying inconsistencies, and organizing evidence and documentation Clear and objective communication of findings to non technical stakeholders

With 97+ completed projects and $10K+ earned on Upwork, I bring hands-on QA testing experience across mobile and web platforms; iOS, Android, and desktop. I specialize in functional testing, regression testing, exploratory testing, and localization QA. I test on real devices (not emulators), which means bugs I catch are bugs that actually affect your users. My device lab: • Android 10 – Xiaomi Redmi 8 • Android 14 – Motorola Edge 30 • Android 16 – Samsung Galaxy A16 5G • Android 16 – Xiaomi Poco F8 Pro • iOS 26.5 – iPhone 12 • iPadOS 26.5 – iPad 11th Gen • Windows 11 – Laptop • Smart TV – WebOS & Android TV Beyond testing, I’m also a native Brazilian Portuguese speaker and professional EN↔PT-BR translator, which makes me especially valuable for localization testing and translation QA on apps targeting Brazilian users. I also contribute to AI training projects, evaluating LLM responses, writing prompts, and assessing content quality with a tester’s eye for detail.

Hi, I'm Augusto. I'm a 7th-semester Software Engineering student based in Brazil. I combine a developer's analytical mindset with native Portuguese fluency to handle Technical QA, AI Evaluation, and Localization projects. I bridge the gap between language and logic. If you need someone who understands the critical difference between text meant for translation and a JSON key that will break your application if touched, you are in the right place. "Augusto provided critical feedback enabling the team to improve much faster... I fully recommend hiring him." — Philip R., Indie Game Developer Here is what I bring to your team: 1. AI Data Evaluation & RLHF (PT-BR) I stress-test conversational models (LLMs and Voice Bots) to find edge cases. Instead of just logging "it sounds weird," I provide clear, reproducible error traces for prompt adherence, logic flaws, and unnatural phrasing in Portuguese so your engineers can actually fix the model. 2. Technical Translation & Localization I localize software and API documentation while strictly respecting code syntax, variables (like {{userName}}), and tags. I also deliver perfectly synced .SRT files for devlogs and technical tutorials using industry-standard terminology. 3. Game QA & Playtesting Bringing over 20,000 hours of gaming experience, I provide high-level feedback on game mechanics and balancing. More importantly, I deliver dev-ready bug reports focusing on UI/UX clarity, input lag, and hitboxes with clear reproduction steps. My Background: Education: 7th-Semester Software Engineering Student. Languages: Native Brazilian Portuguese | Fluent English (C1). Tools: Git, VS Code, Subtitle Edit, Jira, Bug Tracking Systems. Send me a message with a quick overview of your project, and let's get to work.