Train and ship the speech, language, and conversation models that decide whether enterprise customers trust us with their calls.
- Engineering
- Bengaluru, India (Hybrid)
- Hybrid
- Full time

Apply now

About OneInbox
- We're putting voice at the heart of how enterprises actually run.
- We're the production-grade voice AI platform built for Japan and Asia-Pacific.
- We're handling millions of real calls every month — in Japanese, English, Hindi, and Arabic — for banks, real estate firms, and government services.
- Try OneInbox today.

Why we're hiring this role
- Voice AI in regulated enterprise contexts lives or dies on real production metrics — not benchmark scores.
- We have proprietary call data across multiple languages and verticals — and not enough hands on it.
- The next 12 months of model improvements directly determine our ceiling on enterprise expansion.

What you'll be doing

First 30 days
- Get hands-on with the current speech and conversation stack — ASR, TTS, intent, LLM orchestration.
- Set up your evaluation harness against real production call data,



not synthetic benchmarks.
- Identify the 3 highest-leverage model improvements based on customer-visible metrics.

First 60 days
- Ship a measurable improvement to one production-critical model.
- Define and own the evaluation pipeline that the rest of the team will trust.
- Reduce inference latency or cost on at least one hot path without dropping accuracy.

First 90 days
- Ship a second model improvement, this time in collaboration with engineering and product.
- Stand up a continuous training and eval loop that runs unattended.
- Document the model surface so the next ML hire ramps in half the time.

Who you are
- 3+ years of applied ML — speech, NLP, or LLM specialization preferred.
- Comfortable with PyTorch, Hugging Face, and modern training infrastructure.
- You've shipped ML to production and felt the difference between offline and online metrics.
- Strong instinct for when to fine-tune, when t

📌 Machine Learning Engineer (Bengaluru)
🏢 OneInbox.ai (Techstars '25)
📍 Bengaluru