Don Yantzi
Distinguished Engineer @Varis
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WORK HISTORY
Distinguished Engineer @Varis
As an early engineering team member at the startup Varis, I led the architecture, design, and implementation of its B2B eProcurement application on Azure Cloud, enabling enterprises to streamline purchasing workflows at scale.• Built scalable, cloud-native services using Golang, Kubernetes (K8S), PostgreSQL (SQL), CosmosDB (NoSQL), EventHubs, and Kafka delivering high availability and performance for critical purchasing functions.• Designed and built REST APIs in Golang and event-driven services with Azure Event Hubs to support real-time order processing and system integrations.• Automated infrastructure and deployments with Terraform and GitHub Workflows, improving developer velocity, reducing errors, and ensuring operational reliability.• Led the adoption of AI tools for software engineering, enabling developers to use AI for coding, testing, and understanding existing systems.• Mentored engineers across teams in career and skills growth through one-on-one mentoring, design reviews, architecture guidance, and best practices in operational excellence.
EDUCATION
Western University
Masters, Computer Science
Western University
Bachelor of Science (Honours), Computer Science
SKILLS
ABOUT DON YANTZI
Over my career I have served as a Distinguished Engineer and Senior Principal Technical Program Manager, consistently driving technical strategy and delivering complex systems end-to-end. I have always been hands-on as either a software engineer or program manager with deep expertise in designing and building large-scale, distributed systems and e-commerce platforms. I bring deep expertise across the entire software development lifecycle — from requirements definition and technical design through implementation, deployment, and operational excellence. This breadth allows me to deliver resilient systems that not only meet business needs but also scale and perform reliably in production. My experience spans both global enterprises (Amazon, IBM) and startups (Varis, InVision), giving me the ability to balance long-term scale with rapid innovation.Signature accomplishments include:• Designed and implemented a B2B eProcurement application on Azure Cloud, enabling enterprises to streamline purchasing at scale.• Rolled out Amazon Alexa Calling and Messaging in 13 countries, building resilient cloud infrastructure and global communication services.• Implemented and scaled business pricing and bulk ordering and fulfillment for Amazon Business, supporting growth into a multi-billion-dollar marketplace.I thrive in environments that demand innovation, scalability, and technical depth. My goal is to continue contributing as a Principal or Distinguished Engineer, solving hard engineering challenges, building systems that scale, and mentoring engineers to grow technical excellence across teams.
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