Member of Technical Staff - Post Training, Applied (Audio)

About Liquid AI

Spun out of MIT CSAIL, we build general-purpose AI systems that run efficiently across deployment targets, from data center accelerators to on-device hardware, ensuring low latency, minimal memory usage, privacy, and reliability. We partner with enterprises across consumer electronics, automotive, life sciences, and financial services. We are scaling rapidly and need exceptional people to help us get there.

The Opportunity

This is a rare chance to own applied post-training work end-to-end for audio workloads, adapting Liquid Foundation Models for customers who need speech and audio capabilities that run on-device under real-time constraints.

You will act as the technical bridge between customer requirements and model delivery for audio tasks. You will lead engagements from scoping through evaluation, with full ownership over how audio models are adapted and shipped. Between engagements, you will build reusable applied workflows and tooling that accelerate future delivery.

If you care about audio data quality, speech model evaluation, and making audio models actually work in production for real customers, this is the role.

What We’re Looking For

We need someone who:

• Takes ownership: Owns customer post-training projects end-to-end for audio workloads, from requirements through delivery and evaluation.

• Thinks end-to-end: Can reason across audio data pipelines, speech-text alignment, model adaptation, and evaluation as a connected system.

• Is pragmatic: Optimizes for model quality and customer outcomes over publications or theory.

• Thrives under constraints: On-device, low-latency, memory-limited audio systems excite you. You see constraints as design parameters, not blockers.

The Work

• Act as the technical owner for enterprise customer post-training engagements involving audio and speech workloads

• Translate customer requirements into concrete post-training specifications for ASR, TTS, and speech-to-speech tasks

• Design and execute data generation, preprocessing, augmentation, and quality filtering processes for audio corpora

• Fine-tune and adapt audio/speech models for customer-specific use cases, owning delivery from requirements through deployment

• Design task-specific evaluations for audio model performance (noise robustness, speaker variation, latency) and interpret results

• Build reusable applied tooling and workflows that accelerate future customer engagements

Desired Experience

Must-have:

• Hands-on experience with data generation and evaluation for ML model post-training

• Experience training or fine-tuning models using SFT, preference alignment, and/or RL

• Strong intuition for data quality and evaluation design

• Experience with speech or audio ML models (ASR, TTS, audio understanding, vocoders, or speech-to-speech systems)

• Proficiency in Python and PyTorch with autonomous coding and debugging ability

Nice-to-have:

• Experience with audio data pipelines at scale (preprocessing, augmentation, quality filtering)

• Experience delivering applied ML work to external customers with measurable outcomes

• Familiarity with on-device deployment under latency and memory constraints

What Success Looks Like (Year One)

• Independently owns and delivers enterprise post-training projects for audio workloads with minimal oversight

• Is trusted by customers as the technical owner for audio engagements, demonstrating strong judgment and delivery quality

• Has built reusable applied workflows or tooling that accelerate future customer engagements

What We Offer

• Real ML work: You will fine-tune audio and speech models, build audio data pipelines, and ship solutions to enterprise customers under real-time on-device constraints.

• Compensation: Competitive base salary with equity in a unicorn-stage company

• Health: We pay 100% of medical, dental, and vision premiums for employees and dependents

• Financial: 401(k) matching up to 4% of base pay

• Time Off: Unlimited PTO plus company-wide Refill Days throughout the year