Cresta · 9 hours ago
Senior Machine Learning Engineer
United States
Full-time
Remote
Senior Level
5+ years expCresta is on a mission to enhance customer conversations through AI and human intelligence. The Senior Machine Learning Engineer will design and develop advanced machine learning systems, focusing on building agentic AI workflows and evaluating model performance in real-world applications.
Artificial Intelligence (AI)Intelligent SystemsMachine LearningNatural Language ProcessingTelecommunications
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
Qualification
Required
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
Company
Cresta
Cresta uses artificial intelligence to assist sales and service agents in the quality of customer service.
201-500 employees
H1B Sponsorship
Cresta has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (9)
2024 (6)
2023 (2)
2022 (10)
2021 (4)
2020 (3)
Funding
Current Stage
Late StageTotal Funding
$276MKey Investors
Qatar Investment Authority,World Innovation LabTiger Global ManagementSequoia Capital
2024-11-19Series D· $125M
2022-03-17Series C· $80M
2021-03-31Series B· $50M
Leadership Team
Ping Wu
CEO
Tim Shi
Co-Founder, Board Member
Recent News
Global Venturing
2026-01-21
cresta.com
2026-01-21
2026-01-21
Company data provided by crunchbase