QA Engineer (Manual, Mobile) $$$$

LITSLINK is looking for a QA Engineer (Manual) to join a long-term project focused on building a privacy-first secure mobile messenger.

You will work on a complex product with a strong focus on security, real-time communication, and multi-device consistency, where QA is an integral part of the development process.

Project

• Secure mobile messenger (iOS & Android)
• End-to-end encryption by default
• Multi-device support
• Real-time messaging and calls
• On-device AI features

Format

• Remote
• Part-time (≈20h/week)
• Long-term

Responsibilities

• Perform manual testing of mobile applications (iOS & Android)
• Validate critical flows: authentication, messaging, calls, multi-device sync
• Test real-time features under different network conditions
• Identify edge cases and нестандартні сценарії
• Perform API testing and basic network inspection
• Participate in regression testing before releases
• Collaborate with QA Lead and engineers

Requirements

• 3+ years of experience in mobile QA (iOS & Android)
• Experience testing complex mobile applications
• Experience with API testing (REST, Postman)
• Experience with network tools (Charles / proxy)
• Experience testing real-time features (chat / sync / notifications)
• Strong attention to detail and analytical thinking
• Upper-Intermediate+ English

Nice to have

• Experience with WebRTC / VoIP testing
• Understanding of security / encryption basics
• Experience with messaging / fintech / security products
• Experience with real devices testing
• Basic understanding of test automation

Why join

• Work on a security-focused product
• Complex real-time system, not just UI testing
• Opportunity to grow in security and mobile domain
• Flexible part-time format