QA Engineer

Project overview

We are looking for a detail-oriented and experienced QA Engineer specializing in Internationalization (i18n), Localization (l10n), and Physical Device Testing.

In this role, you will champion product quality across a diverse ecosystem of global devices—including mobile phones, tablets, smart home systems, wearables, and health trackers. You will be responsible for ensuring that our products deliver an exceptional, culturally relevant, and visually flawless experience to users worldwide, validating everything from hardware compatibility and RTL UI layouts to backend string formatting and linguistic accuracy.

This role is based in our Warsaw office on a hybrid model (3 days in the office, 2 days remote).

• Conduct rigorous testing across multiple physical devices (iOS, Android tablets/phones, desktops, and Smart Home and Health Devices) to verify functionality, responsiveness, and UI layouts.
• Develop, update, and execute comprehensive test plans, functional test cases, and exploratory test scenarios for new features and bug fixes.
• Test applications across varying system versions, screen resolutions and hardware specs to identify device-specific issues.
• Identify, reproduce, and document detailed bug reports using tracking tools (Jira, Azure DevOps, Buganizer), including logs, steps to reproduce, screenshots, and video recordings.
• Perform thorough regression cycles before production releases to ensure core functionality remains stable.
• Validate that application architecture supports multi-locale enablement without code modification (e.g., Unicode/UTF-8 support, string externalization, hard coded string detection, bi- directional text like RTL, variable expansion, and locale-aware sorting/filtering)
• Verify translated UI elements across multiple languages for accuracy, context, and formatting compliance (e.g., date/time formats, currency symbols, address layouts, dynamic pluralization, and text truncation/wrap issues).
• Conduct pseudo-localization builds during early development cycles to catch hard coded strings, layout clipping, and character rendering errors early in the SDLC.
• Review UI for visual integrity across different screen sizes when localized strings expand or shrink; coordinate linguistic reviews with native-speaking linguists or translation agencies.
• Manage translation asset workflows using Translation Management Systems (TMS) such as Smartling, Phrase, Transifex, or Lokalise, integrating them with code repositories and build pipeline.
• Internationalization and Localization Experience
• Device Testing: Smart Home and Health including smartwatches, health trackers, smart displays, speakers, home security cameras, and camera doorbells.
• Hands-on experience in localization and Internationalization testing with a primary focus on mobile and physical device testing.
• Strong understanding of the Software Development Life Cycle (SDLC), Software Testing Life Cycle (STLC), and QA best practices.
• Ability to think & execute testing from a user’s perspective
• Technical i18n Knowledge: Strong understanding of character encoding (UTF-8, UTF-16), ICU standards, CLDR data, resource file formats (JSON, XML, .po, .strings, XLIFF), and Bidirectional (BiDi / RTL) layout handling.
• L10n Testing Best Practices: Hands-on experience identifying truncation, text overlap, line wrapping, and font rendering issues across various localized builds.
• Device Lab Familiarity: Hands-on experience testing on actual physical devices as well as cloud-based device testing platforms (e.g., BrowserStack, Sauce Labs, Kobiton).
• OS & Tool Knowledge: Solid understanding of iOS (TestFlight, Xcode logs) and Android (ADB, Logcat, APK installation) ecosystems and debugging utilities.
• API Tools: Basic familiarity with tools like Charles Proxy, Fiddler, Postman to inspect and debug device issues.
• Core QA Skills: Strong understanding of the Software Development Life Cycle (SDLC), Software Testing Life Cycle (STLC), and QA best practices.
• Basic understanding of test automation concepts or scripting to partner with automation engineers.
• Experience testing IoT devices, wearables, or specialized embedded systems.
• Familiarity with accessibility testing standards (WCAG, VoiceOver, TalkBack).
• Tooling Proficiency: Experience with Translation Management Systems (e.g., Smartling, Phrase, Crowdin, Transifex) and defect management platforms (Jira).
• Language Skills: Professional proficiency in English; fluency or native-level proficiency in additional languages is a strong plus.
• Core QA Expertise: Solid understanding of software testing methodologies, test planning, and manual/exploratory testing techniques.
• Methodologies: Strong understanding of Agile/Scrum development cycles and QA methodologies.
• Familiarity with regional regulatory, privacy, or cultural standards in key international markets (e.g., EMEA, APAC, LATAM).

Project details

• Start: ASAP
• Location: Warsaw, PL
• Rate: 85-95 EUR/h