Hire the Best Localization Testing Professionals

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Rating is 5.0 out of 5.
5/5
Based on 138 client reviews
Abhimanyu B.

Gandhidham, India

$10/hr
4.9
348 jobs

Hello Visitor, Please hire me to translate Hindi articles or blog posts, test app usability, and file tax returns (we can discuss if you have a low budget compared to the prevailing rates). Get your work done with guaranteed quality and precision. I believe in adding value and not just doing the basic job every time! About Me: I am an experienced translator specializing in English to Hindi, Gujarati, and Bhojpuri languages. You can expect the highest quality work from me. In addition to translation, I have extensive experience as an Accountant, Internal Auditor, and Tax Consultant with over 8 years of working experience. I can also draft applications under the Indian Right to Information Act, 2005, and provide advice on Indian Consumer Laws, including drafting complaints. Beyond translation, I am proficient in tasks related to accounts, taxation, and audits. I have previously undertaken the following types of work: Data entry and typing (English, Hindi, Gujarati, Bhojpuri) Letter drafting Surveys Blog and article writing Indian accounting and tax-related matters Android app testing (manual, non-technical) Languages Known: English Hindi Gujarati Bhojpuri Mother Tongue: Bhojpuri My Hobbies: I enjoy reading and writing short opinions, helping others in various capacities, listening to Bollywood music, and surfing the internet.

  • Official Documents Translation
  • Official Correspondence Translation
  • Translation
  • Hindi
  • Legal Translation
  • English to Hindi Translation
  • English to Gujarati Translation
  • Financial Accounting
  • Internet Survey
  • Mobile App Localization
  • Communications
  • Internal Auditing
  • Bhojpuri
  • Immigration Document Translation
  • Zoho Books
Jan M.

Karlovy Vary, Czech Republic

$25/hr
5.0
387 jobs

Overview I help SaaS, technology, localization, and AI teams ship accurate, natural Czech content – and evaluate the quality of human, machine-translated, and LLM-generated language. Native Czech linguist | 10+ years of experience | 20,000+ Upwork hours | 350+ contracts | 99% Job Success | Top Rated My work goes beyond word-for-word translation. I specialize in localization, linguistic quality assurance, AI/MT output evaluation, and final human review for projects where accuracy, consistency, context, and compliance with detailed guidelines matter. Core services • English → Czech localization – apps, SaaS products, websites, UI, help centers, marketing and product content • LQA & MQM evaluation – error identification, categorization, severity assessment and linguistic QA • AI / LLM language evaluation – Czech output review, preference ranking, linguistic assessment and quality analysis • MTPE – professional post-editing of machine- and AI-generated translations • Proofreading & final review – accuracy, grammar, fluency, terminology, style and consistency • Terminology & style-guide compliance – termbases, client-specific language rules and consistency audits • Legal, financial & technical translation/review – high-accuracy content requiring careful human verification • Audiovisual localization & QC – subtitles, scripts and language quality review What I bring to your project ✓ Native-level Czech language judgment and strong English proficiency ✓ Extensive experience with long-term localization workflows ✓ Careful distinction between objective errors and stylistic preferences ✓ Strict compliance with terminology, character limits, tags, variables and formatting requirements ✓ Experience evaluating both human and AI-generated language ✓ Reliable communication, thorough QA and consistent delivery ✓ Ability to work independently as a Czech language owner or as part of a localization team Tools & formats CAT / localization: SDL Trados Studio, memoQ, Phrase, Smartcat, Crowdin, XTM Cloud, Wordbee, Xbench Formats & technical content: XLIFF, XML, JSON, HTML, spreadsheets, structured localization files, placeholders and variables I am particularly interested in ongoing Czech localization, LQA/MQM, AI language evaluation, linguistic data quality, terminology management and Czech language ownership. If you need more than a translator – someone who can translate, evaluate, review, standardize and take responsibility for Czech language quality – I would be happy to discuss your project.

  • Software Localization
  • Localization
  • English to Czech Translation
  • Website Localization
  • Czech
  • Translation
  • Proofreading
  • Linguistics
  • Machine Translation
  • Quality Assurance
  • AI Content Editing
  • Data Quality Assessment
  • Legal Translation
  • Technical Translation
  • Subtitling
Rodolfo R.

Americana, Brazil

$18/hr
5.0
110 jobs

Need Brazilian Portuguese that sounds natural, accurate, and ready for a real Brazilian audience? 🇧🇷😁 I specialize in Brazilian Portuguese localization, proofreading, subtitle adaptation, AI dubbing review, and linguistic QA for apps, games, videos, and digital content. With 100+ completed projects, $60K+ earned, and 100% Job Success on Upwork, I help international clients turn translated or AI-generated content into polished, natural Brazilian Portuguese. My work goes beyond literal translation. I make sure the final content sounds authentic to Brazilian users while respecting the original meaning, tone, context, timing, character limits, placeholders, tags, and formatting requirements. What I can help you with: • English → Brazilian Portuguese Localization • Proofreading & Linguistic QA • AI Dubbing Review & Playback QA • Subtitle Translation & Adaptation • SRT Review & Synchronization • Transcript Accuracy Review • Speaker Diarization • MTPE & AI-Generated Translation Review • App, Game & UI Localization • Marketing & Digital Content Localization • Brazilian Portuguese Content Adaptation • Character & Timing-Constrained Adaptation I also have hands-on experience reviewing AI-dubbed content, adjusting pacing, improving unnatural dialogue, checking synchronization, fixing transcription issues, and adapting sentences to fit the available speaking time without losing meaning. Over the years, I have worked with apps, mobile games, fitness and wellness content, YouTube videos, interviews, podcasts, marketing campaigns, UI strings, educational materials, and corporate content. My professional background also includes experience at multinational companies such as Honda and Bosch, which helped me develop strong attention to detail, reliability, communication skills, and experience working with structured processes and international teams. If you need Brazilian Portuguese content that is accurate, natural, polished, and ready for publication, I can help.

  • Software Localization
  • Localization
  • English to Brazilian Portuguese Translation
  • Proofreading
  • Subtitle Localization
  • Subtitles
  • Translation & Localization Software
  • Video Game Localization
  • Web App Localization
  • Quality Assurance
  • Brazilian Portuguese to English Translation
  • Linguistics
  • Audio Transcription
  • Machine Translation
  • Content Localization
  • Editing & Proofreading
Tarek R.

Cairo, Egypt

$20/hr
5.0
64 jobs

With over 9 years of experience in software testing and business analysis, I help clients deliver high-quality, reliable software that meets both business and user expectations. My background combines hands-on QA expertise, business analysis skills, and internationally recognized certifications. In addition to project work, I am also a software testing instructor. I’ve trained over 300,000 students worldwide through Udemy and private bootcamps, teaching ISTQB certificates preparation, manual testing, Test Automation, and performance testing. This teaching background means I can communicate clearly, explain complex issues simply, and document processes in a structured way — skills that directly benefit my QA work with clients. 🎓 Certifications ✅ Project Management Professional (PMP) ✅ CAPM® – Certified Associate in Project Management ✅ ISTQB Advanced Level Test Manager ✅ ISTQB Advanced Level Test Analyst ✅ ISTQB Artificial Intelligence Tester ✅ ISTQB Test Automation Engineer ✅ ISTQB Performance Testing Specialist ✅ ISTQB Mobile Application Tester ✅ ISTQB Agile Technical Tester ✅ ISTQB Agile Tester ✅ ISTQB Automotive Software Tester ✅ ASTQB IoT & Mobile Tester ✅ ISTQB Foundation Level Certified Tester ✅ BCS Certified Business Analyst Technical Skills: My practical experience encompasses several industry-leading tools and technologies: ✅ Agile Project Management: Jira ✅ Test Case Writing: Zephyr Scale ✅ API Testing: Postman ✅ Performance Testing: Apache JMeter ✅ Test Automation: Selenium WebDriver & TestNG 🛠 Technical Skills • Agile Project Management: Jira, Azure DevOps • Test Design & Management: Zephyr Scale, Qase.io, TestRail, Testlodge • API Testing: Postman • Performance Testing: Apache JMeter • Automation Testing: Selenium WebDriver, TestNG 📱 Device Coverage (Real Physical Devices) • iOS/iPadOS: iPhone 13 Pro Max, iPhone 14 Pro, iPhone X, iPad Mini 6th Gen, iPad Pro 12.9” • Android: Samsung Galaxy A52s 5G, Samsung Galaxy A53 5G, Samsung Galaxy M11, Galaxy A32, Huawei Y9 Prime, Xiaomi Poco X5 Pro, Realme C17, Redmi 10C This allows me to test apps across multiple devices, screen sizes, and OS versions, ensuring accurate results. 🚀 What I Deliver • Comprehensive test strategies and execution for web, mobile, and desktop apps • Bug detection and detailed reporting with reproduction steps, screenshots, and videos • End-to-end QA coverage including functional, regression, performance, and automation • Business analysis support to align testing with project goals and user needs • Clear communication and reporting thanks to my teaching background I am passionate about ensuring not just high-quality software, but also seamless, user-friendly experiences. If you need a reliable QA partner who brings both technical expertise and teaching clarity, let’s connect and make your project a success.

  • Localization Testing
  • Software Testing
  • Test Case Design
  • Web Testing
  • Black Box Testing
  • Mobile App Testing
  • API Testing
  • Functional Testing
  • Jira
  • Usability Testing
  • Mobile App Localization
  • Selenium WebDriver
  • Postman
  • Apache JMeter
  • Zephyr
  • Agile Software Development
  • Bug Reports
Minahil S.

Lahore, Pakistan

$7/hr
5.0
27 jobs

I am a Senior QA Engineer with 6+ years of hands-on experience in software quality assurance and end-to-end project monitoring. I thrive in fast-paced, high-pressure environments and rapidly master complex products to ensure they launch with confidence. What I Deliver ✅ Design & execute comprehensive testing strategies tailored to your product ✅ Monitor & validate system and software functionality across all touchpoints ✅ Guarantee that your offerings are fully functional and market-ready ✅ Advise on best practices and optimizations throughout testing and bug-fixing cycles ✅ Collaborate with development teams to craft test plans and uncover edge-case bugs Core QA Services 1.Functional & Regression Testing 2.GUI & Usability Testing 3.Performance & Load Testing 4.Installation & Configuration Testing 5.System & Integration Testing 6.Application Security Assurance Testing 7.Localization Testing 8.User Acceptance Testing (UAT) Industry Expertise I have delivered maximum test coverage and quality assurance for: 1.E-Learning Platforms 2.Fitness Apps 3.Online Ordering Systems 4.Hospital & Healthcare Management 5.Hotel & Flight Reservation Systems 6.Real Estate Portals 7.Recruitment & Job Platforms 8.Dating Apps 9.Social Networking Portals 10.AI Chatbots 11.Matrimonial websites and applications 12.Sports marketplace 13.AI Fashion Styling Apps 14.Fertility Tech / FemTech 15.Wellness Platforms Bug Tracking & Project Management Tools Jira · ClickUp · Trello · Asana · Basecamp · Bugzilla · BugHerd · Ghost Inspector Testing Devices iOS: iPhone 12 Pro, iPhone 13 Pro Max, iPad (7th Gen) Android: Samsung Galaxy A72 Desktop: Windows 10 PC, MacBook Air Why Work With Me? I don't just find bugs—I prevent them. My approach combines meticulous manual testing with efficient automation strategies to reduce your time-to-market while safeguarding user experience. Whether you need a quick smoke test or a full regression suite, I adapt to your workflow and deliver actionable, detailed reports that your developers will actually use.

  • Jira
  • Regression Testing
  • User Acceptance Testing
  • Trello
  • Functional Testing
  • Mobile App Testing
  • Bug Tracking & Reports
  • Usability Testing
  • API Testing
  • Project Management
  • Cypress
  • Google Sheets
  • ClickUp
  • Agile Software Development
  • Load Testing
Ying C.

Fair Lawn, New Jersey

$36/hr
5.0
193 jobs

- Native Chinese speaker based in US. Extensive experience in general and technical translation between English and Chinese - Had interpreted 600+ hours of business conversations over audio and video - Completed 140+ translation projects which span across different fields such as app/website/product/marketing materials/brochure localization for various companies including travel/leisure, jewelry industry, beauty industry, financial industry, health/fitness, IT industry, digital marketing. Also have experience in assisting AI in natural language learning/processing, video transcription, speech training, etc.. - Experience with various online CAT platforms - Worked for a multi-national company which has operations in China and other regions. Helped transition it into English speaking world - Worked with leading American investment banks for several years and in addition to professional IT service, also provided professional service in proofreading contents in Chinese which are distributed to its clients. - 14+ years of experience in IT industry specializing in Quality Assurance, leading teams across regions while working with leading US corporations - Led a global QA team and involved in various testing on a research platform which consists of 100+ applications including desktop, mobile and web-based applications while working with a top US investment bank. Portfolio size $1M+ annually - Very thorough and committed to deadlines. I am here to help you reach your goals.

  • Software Localization
  • Software QA
  • General Transcription
  • Functional Testing
  • English to Mandarin Chinese Translation
  • Regression Testing
  • Chinese to English Translation
  • English to Chinese Translation
  • Mandarin Chinese to English Translation
  • QA Management
  • Live Interpretation
  • Translation
  • Technical Translation
  • Translation & Localization Software
  • Business Translation
  • Web Testing
  • Mobile App Testing
  • Startup Company
  • Test Management
  • Bug Tracking & Reports

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