Senior Machine Learning Engineer - Automatic Speech Recognition (ASR)

Cresta is on a mission to turn every customer conversation into a competitive advantage by unlocking the true potential of the contact center. The company is looking for a Senior Machine Learning Engineer to advance model evaluation, measurement, and quality improvements, with particular emphasis on Automatic Speech Recognition (ASR) and downstream NLP systems. Requirements Design, implement, and maintain evaluation frameworks to measure model accuracy, robustness, latency, and real-world performance across ASR and NLP systems. Lead ASR quality improvement efforts, including error analysis, dataset curation, metric definition (e.g., WER and task-specific metrics), and model iteration. Analyze large-scale speech and text data to identify failure modes and drive targeted model and data improvements. Develop, train, and deploy machine learning models for speech recognition and downstream tasks such as classification, entity recognition, information extraction, and structured insight generation. Partner with applied research to translate experimental improvements into production-ready systems. Collaborate with product managers, platform engineers, and UX teams to align model quality metrics with customer and business goals. Optimize ML pipelines and evaluation workflows to operate efficiently and reliably at scale. Establish best practices for model validation, offline/online evaluation, and continuous quality monitoring in production. Benefits Comprehensive medical, dental, and vision coverage Flexible PTO Paid parental leave Retirement savings plan Remote work setup budget Monthly wellness and communication stipend In-office meal program Commuter benefits Originally posted on Himalayas