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Machine Learning Engineer (Evals and Voice Models)

Aircall.io, Inc. · San Francisco Office

Machine Learning Engineer (Evals and Voice Models) is open at Aircall.io, Inc. in San Francisco Office. The posting gives a salary of $181K - $250K. Posted on Sep 15, 2026, and still on Aircall.io, Inc.’s careers page when we last checked, on Nov 14, 2026.

About the role

Design and document comprehensive evaluation frameworks for Aircall’s AI agents across voice, chat and messaging. Train and fine-tune voice models (TTS, ASR, speech-to-speech) using production and synthetic data, iterating on architecture, data mix, and training strategy to improve accuracy, naturalness, and latency. Assess AI generated solutions across training pipelines, experimentation setups, debugging…

The opening lines of the posting. The rest is on Aircall.io, Inc.’s careers page.

Hiring at Aircall.io, Inc.

Aircall.io, Inc. has 88 open roles right now, 1 of them remote. Most are in Engineering, Sales & Business Development and Marketing & Community. The median advertised salary across its roles with a published range is $195K. See all its roles

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