Senior Researcher

About the role

AssemblyAI builds voice AI models and provides tooling for large-scale speech applications. This role joins a team of researchers and engineers responsible for foundational speech models, training, fine-tuning, and supporting production-ready systems.

What you'll do

• Research and develop methods to advance Speech AI
• Improve data quality and build tooling to surface issues
• Analyze production model accuracy and build evaluation harnesses
• Collaborate with researchers and engineers to productionize research prototypes
• Modernize model architectures and inference stacks
• Identify and fix performance bottlenecks across the training stack

What they're looking for

• Hands-on experience training or adapting frontier speech or multimodal language models
• Disciplined in measurement and analysis, skeptical of unexplained improvements
• Interest in the full pipeline from data to deployment
• Deep expertise in core area with ability to expand across domains
• Enthusiasm for building and sharing tools for performance analysis
• Strong Python skills

For applicants in Nigeria

• Location is listed as Remote; the listing does not specify country or time-zone constraints beyond generic remote wording
• The listing does not state a specific timezone requirement; confirm during interview
• The listing does not specify contractor vs employee status
• Pay currency or range is stated as a U.S. salary range for the function; regional adjustments may apply, confirm during interview
• No visa or work-authorization notes are stated; confirm eligibility during interview