09/28/2026 updated

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Principal AI Architect | Generative AI, Agentic AI & LLM Systems

Calgary, Canada
Only remote
Ph.D. Computer Science, University of Windsor, Ontario, Canada (2015-2019)
Calgary, Canada
Only remote
Ph.D. Computer Science, University of Windsor, Ontario, Canada (2015-2019)

Profile attachments

Resume - Yi Zhang - June 2026.pdf

About me

Principal AI Architect & Researcher at CAIS (GenAI): built CAISey, led org-wide agent framework. Ex-Five9 NLP lead: 272% AI revenue growth in 2024; GenAI pipeline to 2x ARR. 10+ yrs research-to-production. NLMatics: millions of docs, 100x speedup. Led teams across US, Canada, India.

RAGMachine LearningNatural Language ProcessingSolution ArchitectureLarge Language ModelsGenerative AI
Generative AI & Agentic Systems
Expertise in agentic AI, AI agents, large language models (LLMs), and Retrieval-Augmented Generation (RAG), including productizing RAG solutions and proposing LLM serving, fine-tuning, and customization pipelines for multiple products.

Natural Language Processing (NLP)
Deep knowledge in NLP research and engineering, including leading core NLP development, improving end-to-end accuracy from 72% to 95%, architecting PDF boundary detection, and implementing state-of-the-art NLP models.

Solution Architecture & Cloud Infrastructure
Proficiency in performance analysis and tuning, Linux, Docker, Kubernetes, GCP, Azure, and AWS, with experience architecting unified AI agent frameworks and scalable platforms capable of processing millions of documents.

Machine Learning & Applied Research
Extensive experience leading R&D for ML algorithms, managing prediction and training pipelines, and translating emerging technologies into production features with measurable business impact.

Leadership & Team Management
Proven ability in team management, mentoring research scientists and ML engineers across the U.S. and Canada, cross-functional collaboration, and onboarding new hires.

Enterprise AI Strategy & Business Development
Experience partnering with executives including CTOs and VPs to expand enterprise AI capabilities, accelerate AI adoption, and deliver measurable revenue growth across SaaS, fintech, and contact-center AI domains.

Document Intelligence
Hands-on experience with DocIntel algorithms, layout analysis, and end-to-end accuracy improvement for document intelligence systems.

Academic Research & Publications
Extensive publication record in network embeddings, NLP, academic paper classification, and social network analysis in top-tier conferences and journals including CIKM, IJCAI, and Scientometrics.

Training & Course Design
Design and delivery of DL, NLP, and GenAI courses aligned with Ontario Private Career College standards, including bootcamp instruction and mentoring students on career development.

Experience

Professional experience10+ years
Freelancer since2022

Languages

EnglishNative speaker

Project history

Machine Learning Specialist - Principal Architect and Researcher

CAIS
Partner with AI Engineering leadership and the CTO to expand enterprise AI capabilities. Lead CAISey, CAIS's first AI agent for alternative investments. Architect a unified AI agent framework. Advise Customer Success on AI adoption opportunities and contribute to internal AI training and mentoring of engineers and researchers.

Course Designer, Instructor

WeCloudData
Delivered GenAI onboarding/training programs and designed DL, NLP, and GenAI courses aligned with Ontario Private Career College standards. Lectured and mentored students on bootcamp projects and career development.

Senior Manager - NLP Team

Five9 Inc.
Partnered with the CTO and VP of AI & IVA to scale department-wide AI capabilities. Accelerated AI adoption contributing to 272% AI revenue growth in 2024. Led POCs across AI, ML, NLP, GenAI, and RAG; managed research scientists and ML engineers across the U.S. and Canada. Translated emerging technologies into production features and mentored engineers.

Staff Applied Scientist - NLP

Five9 Inc.
Served as the first and only staff-level scientist in the organization. Delivered a GenAI clustering pipeline contributing to 2x ARR. Productized RAG solutions and proposed LLM serving, fine-tuning, and customization pipelines for multiple products. Proposed zero-shot classification solutions for contact-center use cases.

Senior AI Applied Research Scientist

ServiceNow - Advanced Technology Group
Led R&D for core DocIntel algorithms and owned prediction and training pipelines. Implemented layout analysis and improved end-to-end accuracy and usability. Collaborated across ML platform teams; interviewed, mentored, and onboarded new hires.

Head of Engineering, President of NLMatics Canada Corp.

NLMatics
Defined the product roadmap with the CEO/advisors and translated client needs into engineering requirements. Managed in-house and offshore engineering teams across the U.S., Canada, and India; led SOC 2 security compliance. Architected solutions and mentored software/research engineers across R&D. Built the full platform from scratch to process millions of documents with a 100x speedup.

Lead NLP Researcher

NLMatics
Led core NLP development, improving end-to-end accuracy from 72% to 95%. Architected PDF boundary detection with color-coded features and bridged R&D/Engineering execution.

NLP Research Engineer

NLMatics
Benchmarked and implemented state-of-the-art NLP models and refactored the core NLP engine.

Visiting Research Scientist (SOSCIP Project)

Chan Zuckerberg Initiative
Proposed embedding algorithms for large-scale health-domain data and worked on academic ranking and author-name disambiguation.

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