Hire the Best Usability Testing Specialists
in Germany

Clients rate our Usability Testing specialists
Rating is 4.9 out of 5.
4.9/5
Based on 147 client reviews
Katarzyna N.

Berlin, Germany

$45/hr
5.0
27 jobs

๐Ÿ“ˆ Data informed (MA in Economics) + โค๏ธ User Obsessed (UX Certification) + ๐Ÿ‘ทโ€โ™€๏ธ 10+ years hands-on experience As a Product Manager with over 10 years of experience across D2C, SaaS, and two-sided platforms, UX Certification, and an MA in Economics, I work directly with founders, agencies, and cross-functional teams to guide products from discovery through launch and growth. I have led platform and integration initiatives for global health and wellness brands, hotel technology ecosystems, and marketplace environments, translating business challenges into clear roadmaps, delivery plans, and live features. I offer a balance of strategic thinking and hands-on execution to drive results. What I Help With Discovery & Optimisation โ€ข Customer & stakeholder interviews โ€ข Competitor and positioning analysis โ€ข UX audits & journey mapping โ€ข Conversion and funnel optimisation โ€ข Experiment design & rapid testing Product & Delivery โ€ข Roadmap definition & backlog structuring โ€ข Feature scoping & requirements (PRDs, specs, user stories) โ€ข Agile delivery & sprint leadership โ€ข Cross-team coordination (design, engineering, ops) โ€ข Go-to-market & launch planning Project & Operational Execution โ€ข Platform integrations & vendor coordination โ€ข Marketplace and booking flow builds โ€ข Process design & workflow optimisation โ€ข Stakeholder and partner management Real-life examples: - MedKitDoc (Germany): Took over a team weeks before a contract-critical deadline. Shipped the product on time and secured the key deal. - Amptify (USA): Repositioned a patient app into a complete B2B platform for medical professionals (teleclinic, booking, marketplace). This transformation contributed to Neurotone AI's acquisition. - Jay Shetty Genius (USA): Built onboarding and feature adoption through JTBD interviews and A/B testing. Built and managed an internal dev team. Managed migration of data and users to the new platform. - Marriott & Design Hotels (Germany): Integrated 100+ independent hotels into Marriott's global distribution ecosystem, leading onboarding, API integrations, usability testing, and training. Iโ€™ve collaborated with founders, doctors, hotel operators, and celebrities, translating vision into structured execution plans that teams can actually deliver against. Toolbox Jira โ€ข Confluence โ€ข Notion โ€ข Figma โ€ข Miro โ€ข GA4 โ€ข Hotjar โ€ข HubSpot โ€ข CRM systems โ€ข Booking engines โ€ข API integration workflows โ€ข CRS โ€ข Channel Manager โ€ข PMS I think strategically but execute operationally. If you're building, scaling, integrating, or fixing a digital product happy to jump in. Let's discuss how I can help with your product challenges and deliver results. Looking forward to hearing from you. Kasia

  • Usability Testing
  • Product Management
  • User Experience Strategy
  • UX Research
  • Research Interviews
  • Product Strategy
  • Software Integration
  • Agile Software Development
  • Product Roadmap
  • API
  • Product Backlog
  • Competitive Analysis
  • Web Accessibility
  • Qualitative Research
  • Project Management
  • Hospitality
  • Healthcare
  • Product Specification
  • Product Discovery
  • AI Product Management
Pooja D.

Dreieich, Germany

$10/hr
5.0
6 jobs

Senior Manual QA Engineer | Software QA Engineer| 7 Years of Experience in IT Industry Greetings Thanks for posting a job on Upwork platform. I have analysed and reviewed the job description carefully. I have around 6.5+ years of work experience as a QA in IT Industry. During this experience I have tested various websites and mobile applications. In Websites, I have performed below types of testing ๐Ÿงช Manual QA Expertise โ€ข Functional Testing โ€ข Regression Testing โ€ข UI/UX Testing โ€ข Integration Testing โ€ข Endโ€‘toโ€‘End Testing โ€ข Exploratory Testing โ€ข Crossโ€‘Browser Testing โ€ข Mobile App Testing (Android & iOS) โ€ข Usability Testing โ€ข Payment Gateway Testing โ€ข System & Acceptance Testing โ€ข Test Case Design & Execution โ€ข Defect Reporting & Management (Jira) โ€ข UAT Support โ€ข Responsive Testing โ€ข Requirement Analysis โ€ข Test Documentation (Test Plans, Test Cases, Reports, SOP Document, Use Cases, Confluence pages) I have great experience in using various tools of testing, some of them on which I have worked are listed below For Bug Logging : JIRA, TFS, Google Spreadsheet, Clickup For Test Cases : JIRA, Test Rail, Google Spreadsheet For Broken Link Checking : Web link Validator For Automation : Selenium IDE For API Testing: Postman, JMeter For Load/Stress Testing: JMeter For Documentation: Confluence Agile/Scrum Test Plans, Test Cases, Traceability Matrices SDLC & STLC ๐Ÿ† Key Achievements:- ๐Ÿ† Reached 100% Job Success in only one month by delivering reliable, detailโ€‘oriented QA work and exceeding client expectations from the very first projects. โญ 4+ 5-star reviews from satisfied clients โ€ข Delivered zeroโ€‘defect releases across multiple sprints โ€ข Improved test coverage by 30% through detailed test case design โ€ข Identified critical defects that prevented major production issues โ€ข Built reusable API test suites in Postman โ€ข Successfully tested eโ€‘commerce and mobile applications ๐Ÿ“ฑ Devices I Test On ๐Ÿ“ฑ Android: Samsung Galaxy S24 Ultra, Samsung Galaxy S21 Plus, Poco X4, RealMe GT Master Edition, OnePlus 9, OnePlus 8T, Samsung A18 ๐Ÿ“ฑ iOS: iPhone 16 Pro Max, iPhone 14 Pro Max, iPhone 14 Plus, iPhone 13 Pro Max, iPhone 11, iPhone XR ๐Ÿ’ป Desktop: MacBook Air, HP Pavilion X360, RealMe Book, Lenovo ThinkPad, Samsung Galaxy Book 4, Dell, IPad ๐ŸŒ Domain Expertise โ€ข Eโ€‘commerce โ€ข Mobile Applications โ€ข Order & Checkout Workflows โ€ข Payment Integrations โญ Why Clients Choose Me โœ” Strong defectโ€‘finding ability โœ” Clear communication & detailed documentation โœ” Fast turnaround with high accuracy โœ” Experience across web + mobile โœ” Reliable, detailโ€‘oriented, and qualityโ€‘focused โœ” Flexible availability across time zones Related Keywords: Manual Testing, API Testing, Web Testing, Mobile App Testing, Regression Testing, Cross-Browser Testing, Test Case Design, Jira, UI/UX Testing, End-to-End Testing, Functional Testing, Bug Reports, Quality Assurance, Payment Gateway Testing, iOS Testing, Android Testing, Test Plan, Usability Testing, User Testing, Software Testing, Manual QA, AI Testing, Chatbot Testing, Voice AI Testing, NLP Testing, Mobile App QA, Conversational AI, AI Model Evaluation, Reverse Testing, PWA Testing, Progressive Web App Validation, AI Apps Testing, Progressive Web Application, OpenAI, AI Apps, ChatGPT, Sora, Gemini, Generative AI, Chatbot I am committed to delivering errorโ€‘free, highโ€‘performing software and helping clients launch products that users trust and love. If you need a Software QA specialist who ensures smooth releases, zeroโ€‘defect delivery, and consistent quality, Iโ€™m here to support your project. Lets Hope in, Pooja

  • Software Testing
  • Manual Testing
  • Automated Testing
  • Regression Testing
  • Functional Testing
  • Jira
  • Atlassian Confluence
  • Sanity Testing
  • Mobile App Testing
  • Web Testing
  • Microsoft Excel
  • Microsoft PowerPoint
  • Salesforce Lightning
  • API Testing
  • TestNG
  • Selenium
  • Quality Assurance
  • Bug Reports
  • Test Case Design
  • Configuration Management
Dhanalakshmi R.

Bietigheim, Germany

$20/hr
4.0
7 jobs

AI Speech Data Collection & Audio Recording Specialist | Script Creation, Editing & QA | Tamil, English, German I am an experienced AI Speech Data Collection and Quality Assurance Specialist with expertise in multilingual audio recording projects, script creation, script correction, and linguistic quality review in Tamil, English, and German. I support AI training, speech recognition, voice assistant, NLP, and language technology projects by delivering high-quality speech data and recording-ready scripts that meet client requirements. Services I Offer: โœ“ Audio Utterance Recording (Tamil, English, German) โœ“ AI Speech Data Collection Projects โœ“ Script Creation for Audio Recording Tasks โœ“ Creative Writing and Prompt Generation on New Topics โœ“ Script Editing and Correction โœ“ Grammar, Spelling, and Linguistic Review โœ“ Speech Data Validation and Quality Assurance โœ“ Audio Recording Quality Checks โœ“ Localization and Content Adaptation โœ“ Recording Instruction Review and Compliance Check Languages: โ€ข Tamil โ€“ Native Speaker โ€ข English โ€“ Professional Proficiency โ€ข German โ€“ Professional Working Proficiency Expertise: Creating natural and engaging utterances for AI speech training Developing scripts across various domains and topics Generating conversational, formal, and scenario-based dialogues Correcting and optimizing scripts for recording quality Reviewing audio recordings for pronunciation, clarity, and compliance Ensuring linguistic accuracy and consistency Supporting multilingual speech and language data projects Speech Data Collection Project - Created and reviewed recording prompts for speech collection projects involving native speakers. Ensured: Natural conversational flow Correct grammar and punctuation Recording-friendly sentence structure Compliance with client requirements AI Voice Training Scripts Prepared scripts for voice and speech recognition systems, including: Read speech prompts Conversational dialogues Scenario-based utterances Domain-specific vocabulary Tools: Microsoft Excel Microsoft Word Google Sheets Google Docs Localization Platforms QA and Annotation Tools Why Work With Me? 10+ years of experience in Testing and Quality Assurance Strong attention to detail and accuracy Experience with speech data collection and audio recording projects Fast turnaround and reliable communication High-quality deliverables tailored to client requirements I am committed to delivering accurate, natural, and high-quality speech data, scripts, and linguistic reviews that help improve AI and voice-enabled technologies.

  • Software Testing
  • Test Results & Analysis
  • Test Case Design
  • Test Execution
  • Test Plan
  • Test Requirements
  • TestRail
  • Customer Support
  • Google Docs
  • Bug Tracking & Reports
  • Project Management
  • Google Sheets
  • Tamil
  • Tamil to English Translation
  • English to Tamil Translation
  • Administrative Support
  • Process Improvement
  • Client Management
  • Data Collection
  • Report Writing
Manahil J.

Cottbus, Germany

$5/hr
5.0
9 jobs

I'm a QA and UI/UX specialist with experience in manual testing, bug reporting, and usability analysis. I help ensure software quality through detailed testing and user-centered design feedback. Skilled in tools like JIRA, SQL, HTML/CSS, and Figma. I focus on clear communication, reliability, and delivering results that improve product performance and user experience.

  • Software Testing
  • Software QA
  • Alpha Testing
  • Beta Testing
  • Quality Assurance
  • UI/UX Prototyping
  • Selenium
  • Front-End Development
  • Figma
  • Adobe Creative Suite
  • Adobe XD
  • QA Testing
  • Test Case Design
  • Bug Fix
Juan Esteban A.

Gransebieth, Germany

$25/hr
5.0
23 jobs

Looking for a reliable and detail-oriented QA Engineer who can help you deliver a product with confidence? Iโ€™m here to help. Iโ€™m a Manual QA Tester with 4+ years of experience testing both web and mobile applications, helping businesses improve product stability, usability, and customer satisfaction. I specialize in identifying critical issues early, ensuring smooth releases, and delivering clear testing documentation that supports fast development cycles. โœ… What I Bring to Your Project ISTQB Certified: โœ” Certified Tester Foundation Level โœ” Certified Tester Advanced Level Technical Test Analyst โœ” Certified Tester AI Testing โœ” Certified Tester, Testing with Generative AI ๐ŸŸฉStrong experience across multiple industries: e-commerce, healthcare, real estate, finance, education, and more ๐ŸŸฉExpertise in black-box testing, regression testing, compatibility testing, usability testing, and API testing ๐ŸŸฉSkilled with industry tools like Postman, Jira, TestRail, BrowserStack, LambdaTest, Xray, and ContentStack ๐ŸŸฉStrong bug reporting skills with clear reproduction steps and documentation ๐Ÿ”ฅ Key Strengths โœ” Thorough test case creation and execution โœ” Detailed defect tracking and reporting โœ” API validation and testing using Postman โœ” Cross-browser & cross-device testing โœ” Reliable communication and smooth collaboration with remote teams ๐Ÿ’ปTesting Devices Available ๐Ÿ“ฑSamsung Galazy S26 Ultra ๐Ÿ“ฑSamsung Galaxy Tab S11 Tablet ๐Ÿ“ฑiPhone 14 Pro ๐Ÿ“ฑiPhone 16 Pro ๐ŸŒ Languages Native Spanish | Fluent English | Conversational German ๐Ÿš€ Letโ€™s Work Together If you need a QA professional who delivers high-quality testing, clear reports, and consistent results, feel free to message me. Iโ€™d love to learn more about your project and help you launch with confidence.

  • Software Testing
  • Software QA
  • API Testing
  • Functional Testing
  • Desktop Application Testing
  • End-to-End Testing
  • Manual Testing
  • Test Execution
  • Test Case Design
  • Smartphone
  • Mobile QA
  • QA Testing
  • QA Software & Testing Tools
  • QA Engineering
Oleksandr Y.

Vreden, Germany

$25/hr
5.0
5 jobs

I identify UX issues and bugs that reduce conversion in mobile apps and websites. If users drop off, abandon flows, or get confused โ€” I pinpoint exactly where, why, and how to fix it. Iโ€™m a product-focused QA Engineer who tests apps like a real user. I analyze onboarding, booking, checkout, and other critical flows that directly impact retention, conversion, and revenue. In my recent UX audits (including e-commerce and booking flows), I identified friction points that can reduce conversion by up to 5โ€“15%. This directly impacts user retention, conversion, and revenue. What I do: โ€ข UX audits (conversion-focused) โ€ข Real user journey testing โ€ข Friction & drop-off analysis โ€ข Bug detection with business impact Platforms: โ€ข iOS, Android, Web Tools: โ€ข Jira, Postman, Charles Proxy I donโ€™t just test โ€” I help you understand why users leave and what to fix. If your product loses users โ€” I will show you exactly where, why, and how to fix it to improve conversion.

  • Usability Testing
  • Manual Testing
  • Mobile App Testing
  • Test Case Design
  • Regression Testing
  • Exploratory Testing
  • Cross-Browser Testing
  • API Testing
  • Quality Assurance
  • Functional Testing
  • Jira
  • Postman
  • Product Testing
  • Localization Testing
  • User Acceptance Testing
  • Web Testing
  • GUI Testing
  • iOS
  • Android Studio
  • Apple Xcode

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