Jeff Leyser

Experience

• 

  Zillow Group

  Director, Site Reliability Engineering

  Aug 2020 - Mar 2024

  Zillow’s mission is to help more people get home — with speed, certainty and ease.

  • Saved enterprise an average of $1.2M a year in AWS costs each by delivering multiple large-scale migrations on time and on budget and unified cost management and budget for a multimillion AWS spend.
  • Achieved attrition rate under 5% and an employee engagement score of 100% following integration of 5 disparate SRE/DevOps teams to support and standardize SRE across engineering.
  • Developed and allocated a $12M annual budget and another $500K in software licenses reporting directly to the VP of Technology and Operations
• 

  Zillow Group

  Sr. Engineering Manager, DevOps

  Jan 2017 - Aug 2020

  • Led a team of 10 Infra/DevOps engineers in supporting the Zillow Integrated Transaction Business, contributing to over $1 billion in annual revenue.
  • Pioneered the migration of key operational components from on-prem to AWS, significantly improving infrastructure scalability and reliability.
  • Managed the consolidation of DevOps and SRE teams across various product lines into a unified structure, enhancing operational efficiency.
  • Implemented agile processes and rigorous engineering practices within a largely AWS-based ecosystem, significantly impacting project delivery and product development.
• 

  Zillow Group

  DevOps Engineer

  Jul 2016 - Jan 2017

  • Supported 50 software engineers as the first public cloud engineer in the organization.
  • Developed all new CI/CD pipelines, migrated services, and provided day-to-day support to the engineering teams.
  • Migrated 150 services that supported $1B in annual revenue from on-premises to AWS without any downtime or revenue disruption.

• BSR Software

  DevOps Engineer & Consultant

  Jan 2009 - Jul 2016

  Independent DevOps Contractor

  • Re-architected and re-deployed multiple client sites for an e-commerce PaaS provider; migrated from a VMWare-based enterprise architecture to AWS cloud architecture.
  • Improved uptime and performance of a large Django based infrastructure for an SaaS non-profit client, moving key pieces from traditional on-prem systems to AWS with no disruption.
  • Built and expanded a Linux-based infrastructure for a technology startup, completing infrastructure engineering to grow from a server in a closet serving 5 people, to a 6-rack data center serving 100+ employees.