Flex

Responsibilities:

 

• Manual testing of iOS, Web (frontend and backend), macOS, Android and Windows applications
• Identify software issues through testing procedures (functional, Ad-hoc, regression, smoke, integration, etc.)
• Report found software issues to bug tracking system and follow their life cycle
• Creating test reports
• Write and keep up-to-date test documentation: checklists, test cases, etc
• Constant communication and collaboration with development and product teams
• Propose solutions for quality improvement
  
  
   

Requirements:

 

• 2+ years of experience in testing mobile applications and Web
• Knowledge in bug tracking systems and experience in writing bug reports
• Experience in creating various test documentation using test management tools
• Knowledge of various testing types (e. g., functional, integration, regression, Ad-hoc)
• Basic knowledge of Xcode, DevTools, Postman, Charles proxy, Android Studio, Gitlab, etc
• Great analytical skills
• Excellent communication skills, both written and spoken, with the ability to collaborate effectively within cross-functional teams
• At least B2 English level

Your responsibilities will include:

• Migrating real-time communication in an Android SDK from WebSockets to WebRTC
• Integrating, stabilizing, and optimizing LiveKit-based real-time flows
• Troubleshooting and resolving low-latency audio and streaming issues
• Working on production-grade SDK code (not PoC-level implementations)
• Collaborating closely with the internal Android and backend teams to unblock critical technical challenges
• Acting as a senior technical contributor during an urgent delivery phase
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What we expect from you:

• Strong senior-level Android development experience with Kotlin
• Proven, hands-on experience with WebRTC in production environments
• Experience with LiveKit is a strong plus
• Deep understanding of real-time audio, networking, and streaming concepts
• Experience working with SDK-level code and complex integrations
• Ability to ramp up immediately and work independently with minimal guidance
• Strong problem-solving skills and a “firefighting/consultancy” mindset
• Good English communication skills (fluent enough for technical collaboration)
•  

What we offer:

• High-priority, urgent engagement with immediate impact
• Flexible consultancy-style collaboration (up to 80 hours initially, with possible extension)
• Fully remote setup with no geolocation restrictions
• Opportunity to work on complex, real-time communication challenges in a production environment
• Direct collaboration with experienced internal engineers