Research Engineer

Phonic • San Francisco, CA

6d • Onsite

About The Position

As a Research Engineer at Phonic, you'll sit at the intersection of cutting-edge ML research and production engineering, working directly on the core systems that make Phonic's voice AI feel genuinely human. You'll design, train, and iterate on models across the voice stack (speech, audio, language, and beyond), while also building the infrastructure and tooling needed to move fast from research idea to deployed product.
This is a role for someone who thrives in ambiguity, moves with urgency, and takes full ownership of problems. You'll work closely with researchers and product engineers in a high trust, in-person environment in our SF office to push the frontier of what voice AI can do.

Requirements

• Hands-on experience in ML research or research engineering, industry or PhD-level academia
• Proficiency in Python and PyTorch (or JAX), and the ability to implement models cleanly from papers
• Experience running ML experiments end-to-end: data processing, training, evaluation, and iteration
• Comfort in fast-moving, ambiguous environments - defining the problem is part of the job
• The ability to clearly explain what you tried, what worked, and why

Nice To Haves

• Research experience in speech, audio, or language modeling (ASR, TTS, LLMs, codec models)
• Familiarity with diffusion, flow matching, or autoregressive generative models
• Experience with distributed training, quantization, or inference optimization
• Competitive programming or olympiad background

Responsibilities

• Design, implement, and iterate on models across the voice stack from audio and speech to language and beyond
• Build the training pipelines, evaluation frameworks, and tooling that let us experiment and iterate quickly
• Translate research results into production-grade systems alongside our engineering team
• Form hypotheses, chase down interesting results, and take ownership over the problems you work on

Benefits

• 💸 Top-tier compensation: in order to get the best talent, we provide salary and equity that recognize your skillset
• 🥗 Meals: free breakfast, lunch, and dinner provided in the office
• 🩺 Healthcare: Comprehensive health, dental, and vision
• 🤝 We have regular off-sites and team celebrations
• 👵 401(k) – Let us help you plan for the future. We’ve got you covered.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: Ph.D. or professional degree