Senior QA Engineer (mobile)

We’re building Tonkeeper, the leading non-custodial wallet in the TON ecosystem, helping users and developers discover dApps and DeFi tools. Tonkeeper Team has also created TON API, the largest platform on TON, and Tonviewer, a top explorer for tracking transactions, tokens and NFTs. With Tonkeeper Mobile, Tonkeeper Pro, TON API and Tonviewer, we make it easy to explore and grow on The Open Network

Our team has plenty of experience in building products for mass adoption, and high-load services, as well as in applying innovative technologies in cryptography and blockchain.

We are looking for a Cross platform QA Engineer to expand our QA team and ensure the quality and stability of mobile releases.

You will be responsible for the end-to-end quality of a mobile & web application, working closely with other QA's. This includes ownership of functional, regression, and integration testing, maintaining regression test coverage, and proactive production monitoring to identify and mitigate user-critical issues.

Responsibilities:

• Lead initiatives to improve overall product quality.

• Proactively monitor product health and detect user‑critical defects before they escalate.

• Champion UI/UX quality: review the app regularly and collaborate with Design to deliver a best‑in‑class user experience.

• Benchmark competitor products and adopt proven user flows.

• Partner with Support: triage user reports, prioritize issues, and communicate resolutions promptly.

• Perform functional, regression, and integration testing to ensure release quality.

• Identify, log, and analyze bugs, providing clear, reproducible steps, impact assessment, and environment details.

• Create and maintain regression test cases.

• Hunt for vulnerabilities and abuse/fraud vectors; work with the team to design and verify protective controls.

• Critically review specs and planned features; surface ambiguities, risks, and edge cases early and drive clarification.

Requirements:

• 4+ years of hands-on experience in quality assurance for mobile or complicated web applications.

• Practical experience with blockchain products (wallets, transactions, dApps).

• Proactive mindset with a strong product-focused approach and attention to user impact.

• Experience testing cross-platform applications.

• Experience collaborating with Customer Support teams to triage, prioritize, and resolve user-reported issues.

• Ability to validate implementations against design mockups and work closely with Design teams to ensure UI/UX consistency.

• Strong communication and stakeholder management skills.

• Experience with continuous production monitoring tools to detect, analyze, and respond to live issues.

Why it is a fantastic opportunity:

• Our business is growing at an exponential scale.

• Non-bureaucratic management that focuses on results.

• Regular performance reviews to assess your progress.

• Remote setup with access to our hubs in Dubai, Yerevan, London and Belgrade.

• Compensation for medical expenses.

• Provision of necessary equipment.

• Employees get access to the most advanced AI models via mira.tg.

• 20 working days of paid vacation annually.

• 11 days off per year.

• 14 days of paid sick leave to support your health and recovery when needed.

• Access to internal conferences, English courses and corporate events.