Senior/Staff Machine Learning Engineer

Note

The job is a remote job and is open to candidates in USA. Cresta is an enterprise AI platform born out of the Stanford AI Lab that transforms how Fortune 500 companies operate their contact centers. The Staff Machine Learning Engineer builds scalable ML and NLP systems, including LLM, RAG, evaluation, and agentic AI workflows, and integrates them into enterprise applications.

Responsibilities

• Build and optimize agentic AI workflows that enable users to dynamically interact with and refine outputs from ML systems
• Research and implement advanced ML and NLP techniques, including transformer-based models, embeddings, and retrieval-augmented generation
• Develop evaluation frameworks to assess accuracy, robustness, and usability of ML/LLM models in production environments
• Design, train, and deploy machine learning models for tasks such as classification, entity identification, information extraction, retrieval, topic discovery, and structured insight generation
• Architect and optimize RAG pipelines for grounding LLMs with enterprise data to ensure accuracy and reliability
• Collaborate with engineers, UX designers, and product managers to integrate AI-driven capabilities into Cresta’s platform
• Optimize ML pipelines and data processing systems to operate efficiently at scale

Skills

• Master's or Ph.D. in Computer Science, Machine Learning, AI, or a related field
• 5+ years of hands-on experience building and deploying ML models in production
• Strong knowledge of ML frameworks and NLP libraries (e.g., PyTorch, TensorFlow, Hugging Face, spaCy, NLTK)
• Solid experience with modern ML techniques including transformer architectures, embeddings, retrieval systems, and large-scale model training
• Experience designing and deploying Retrieval-Augmented Generation pipelines for enterprise use cases
• Familiarity with evaluation and benchmarking frameworks for ML/LLM models
• Strong passion for AI-driven innovation, with a proven ability to deliver impactful, production-grade solutions

Benefits

• We offer Cresta employees a variety of medical, dental, and vision plans, designed to fit you and your family’s needs
• Paid parental leave to support you and your family
• Monthly Health & Wellness allowance
• Work from home office stipend to help you succeed in a remote environment
• Lunch reimbursement for in-office employees
• PTO: 3 weeks in Canada
• Compensation for this position includes a base salary, equity, and a variety of benefits.

Company Overview

• Cresta is a $1.6B enterprise AI platform born out of the Stanford AI Lab, transforming how Fortune 500 companies run their contact centers. It was founded in 2017, and is headquartered in Palo Alto, California, USA, with a workforce of 201-500 employees. Its website is https://www.cresta.com.

Company H1B Sponsorship

• Cresta has a track record of offering H1B sponsorships, with 3 in 2026, 9 in 2025, 6 in 2024, 2 in 2023, 10 in 2022, 4 in 2021, 3 in 2020. Please note that this does not guarantee sponsorship for this specific role.