Speech Algorithm Engineer

Speech Algorithm Engineer (Speech LLM / SpeechLLM)$200,000 - $300,000San Francisco, Hybrid 3x per week in officeFull time / Permanent

About the Role

This company is already profitable, growing fast, and used by over 1.5M professionals globally. Revenue is tracking at ~$250M in under three years. The product works and is highly marketable, the next step is making its speech system significantly more accurate across languages, industries, and real-world conversations.

We're hiring a speech algorithm engineer to improve speaker diarization and keyword recognition in productio. This is applied, high-impact work that ships.

What You'll Do

Improve speaker diarization and multi-language speech recognition accuracy in real customer conversations

Design and optimize hotword and terminology recognition systems for industry-specific use cases

Fine-tune and train large speech models on substantial audio datasets

Build clear evaluation frameworks to measure keyword accuracy and speaker separation performance

Compare open-source and commercial ASR systems and push performance beyond them

Work closely with product and engineering to deploy models into live systems used dailyWhat "Great" Looks Like

You've trained or fine-tuned speech models on large-scale datasets (not small research-only projects)

You understand how speech systems behave in noisy, real-world conditions

You've improved measurable production metrics (accuracy, diarization quality, keyword recall)

You can read research and turn it into working systems

You take ownership when performance drops

Notable: If your experience is limited to light experimentation or purely academic research without production exposure, this likely won't be a fit.

Why Join

Profitable company at ~$250M run rate

Hybrid San Francisco team building both hardware and AI systems

Real ownership and visibility, not one engineer in a large org

Global product scale and meaningful datasets

Clear growth path toward senior technical leadership as the audio function expands

Strong data security and compliance standards, this is enterprise-grade infrastructure