QA Engineer – Embedded & Audio Quality

CSHARK is looking for a QA Engineer to join a project focused on developing on-device audio and speech products for an international client. This role is essential for ensuring that the client’s SDK performs optimally on target devices and that the generated voice output meets high standards of naturalness, intelligibility, and quality.

Key responsibilities

• Conduct performance testing of embedded SDKs on target devices, focusing on latency, resource usage, and overall system stability.
• Evaluate speech quality by assessing intelligibility, naturalness, speaker identity, and potential audio artifacts.
• Implement and automate objective metrics such as PESQ, ViSQOL, STOI, and WER to maintain high quality standards.
• Design and execute subjective listening tests and perform detailed analysis of the gathered results.
• Set up and utilize acoustic test rigs to ensure repeatable and accurate measurements during the testing process.

Requirements

• Proven experience in QA for embedded, mobile, or audio-focused software environments.
• Practical knowledge of industry-standard speech and audio quality metrics like PESQ, ViSQOL, STOI, or WER.
• Experience in organizing and conducting perceptual evaluations or listening tests.
• Solid understanding of acoustic measurement setups and a keen ear for detail.
• Fluency in English to facilitate clear communication with research and engineering teams.

What we offer

• A fully remote position working on a long-term project for a global technology client.
• The opportunity to work with cutting-edge on-device audio technology integrated into real consumer devices.
• Collaboration with a team of experienced engineers and direct interaction with the client’s R&D department.
• Stable cooperation with CSHARK, supported by dedicated delivery and people teams throughout the project lifecycle.