Lead ML Engineer, Consumer AI

Sandbar; New York (NY); On-site; USD 180,000 - 240,000; Full time

Job summary

Sandbar is seeking a tech lead to design self-aligned agentic experiences in Stream, guiding a focused team building a consumer product where personalization, privacy, and individual control are paramount. This is a hands-on lead role for a consumer product, not a platform or research role.

You will set the technical direction, build the end-user experience, and ensure the agent works for general customers.

Qualifications

• 6+ years in machine learning experience.
• Experience shipping ML-based products is required.
• Experience in large-language model evaluation and post-training is required.
• Experience in audio/voice ML is a plus.

Responsibilities

• Lead architecture, strategy, and tradeoffs for ML-based products.
• Design and improve user-facing model-based experiences, including agentic control, conversations, and info retrieval.
• Develop infrastructure to rapidly develop, evaluate, and deploy models.
• Optimize inference pipelines for latency, reliability, and concurrency.
• Collaborate with ML/AI engineers, infrastructure, designers, and cofounders on current and future products.

Skills

Machine learning

Shipping ML products

LLM evaluation & post-training

Audio/Voice ML

Production-grade software

Human-computer interaction

Technical leadership

Job description

Sandbar is seeking a tech lead to design self-aligned agentic experiences in Stream, guiding a focused team building a consumer product where personalization, privacy, and individual control are paramount. This is a hands-on lead role for a consumer product, not a platform or research role.

You will set the technical direction, build the end-user experience, and ensure the agent works for general customers.