Tim O'Brien Email & Phone Number

Bentonville, Arkansas, Us

Coordination and execution of overall approach to Cloud FinOps along with peer organizations across all pillars including Global Tech Finance, Strategy, and Technology Platforms in addition to Walmart's customer-facing pillars such as Omnichannel, International, and Sam's Club.Monitoring and supporting relationships with cloud service providers and SaaS vendors in areas related to Generative AI, shared investments, overall rate optimization, with a focusing on the intersection cloud strategy, financial, and legal topics.Developing shared strategies with partner organizations through the FinOps Foundation to define common approaches to cost reporting (FOCUS) and helping to establish shared best practices across the industry.

Bentonville, Arkansas, Us

Coordinating department-wide strategy for cloud cost savings across key pillar focus areas including Customer Experience, End-to-end Fulfillment, Stores & Associates, Transportation, Catalog, and Global Marketplace.Collaborating with Global Technology Platform, Internal Strategy, and Technology Finance to establish baseline standards and metrics for efficiency and cloud forecasting, and driving technical research across several departments with a focus on increasing efficiency of Data Platforms supporting both analytical and transactional data workloads.

Bentonville, Arkansas, Us

Managed several teams providing SRE, DevOps, and Release Management support across areas of Walmart's US Omni including Fulfillment, Replenishment, Enterprise Item & Inventory, Stores & Associates, in addition to Operational Support teams with a focus on Omnichannel Supply Chain Systems (OSCS)Managed the relationship between Global Technology Platform (GTP) and US Omnichannel for critical upgrade and resiliency programs including a target migration of workloads from off-premise (public) to on-premise (private) as well as a focused effort to upgrade systems to the latest releases of Kafka and Cassandra.Led teams across both US and India offices to establish standards and best practices for reliability and provide 24/7 support and response during critical incidents and events supporting eCommerce in addition to Walmart's extensive network of Fulfillment Centers, Distribution Centers, and stores.

Bentonville, Arkansas, Us

Refined multi-cloud strategy across private data centers and public cloud providers. Grew Capacity, Cost, and Demand Governance groups in Walmart Global Tech's Global Platform area allowing all markets to depend on capacity while achieving greater efficiency. Introduced multi-cloud cost reporting and refined Walmart's approach to tagging to align with organizational models. Managed the creation and operation of a data lake leveraging AirFlow, GCS, and BigQuery, Looker, React, and Python to ingest cost, capacity, and operational data from over 40 data sources driving daily decisions on cost, capacity, and efficiency. Supported contract negotiations and long-term planning as Walmart migrated workloads between private and public cloud providers.Introduced a FinOps-driven approach to realize Sam's #9 - "Control your expenses better than your competition."

Bentonville, Arkansas, Us

As part of Strati, I was responsible for overall cost management across public and private cloud infrastructure and capacity planning efforts across private cloud and multiple public cloud providers. Established cloud capacity and cost management efforts during Walmart's Constellation effort to migrate workloads from Openstack on private cloud to Azure and GCP.

Bentonville, Arkansas, Us

2018: Transitioned to Strati Cloud Engineering: responsible for overall cost management across public and private cloud infrastructure and capacity planning efforts across private cloud and multiple public cloud providers. Established cloud capacity and cost management efforts during Walmart's Constellation effort to migrate workloads from Openstack on private cloud to Azure and GCP.2016: Led a multi-team effort to migrate Walmart's .com property to HTTPS-only while working closely with Infosec to support the initial implementation of bot mitigation. Supported production deployment strategy and phased rollout for Walmart's Electrode (React) migration. Led holiday readiness effort for walmart.com Black Friday and Cyber Monday readiness and production support through 2016.2015: Developed a scalable production deployment architecture for Walmart.com (USGM) and played a central role in delivering Pangaea's front-end (Atlas) architecture through multiple phased releases to mitigate the risk of launching a new platform over several years.

Bentonville, Arkansas, Us

2014: Started to drive DevOps and deployment architecture for Pangaea's front-end architecture Atlas across 2014 and 2015 ultimately becoming responsible for rearchitecting Walmart's approach to deployment and builds to migrate to a Spring-based, Java front-end supporting an end-to-end service-based architecture. This effort involved working with teams across Global Products and Supply Chain to stand up and introduce telemetry systems such as Splunk and define new strategies for managing and routing traffic between data centers in support of Holiday..2013: Upgraded Walmart.com from Tomcat 5 to Tomcat 7 to improve performance and stability for Holiday 2013. Adapted and grappled with a massive legacy build spanning several technologies including everything from Perl, Maven, Make, Gradle, M4 templates, Ant, and CVS to deploy the last platform upgrade for Walmart's legacy e-commerce platform.Conducted performance audit and optimization process for Walmart.com systems in preparation for Holiday 2013.

Covered Science, Technology, Open Source, and Government for O'Reilly Media. Started an "experimental" team of technologists assembled in 2008 to bring a technical perspective to news coverage on topics relevant to the O'Reilly audience.Featured Interviews for O'Reilly Media: * Representative John Culberson (R-TX) on Science Policy, * Dr. Brian Cox on CERN, * Lawrence Lessig on Internet Privacy, * Craig Newmark on Internet Freedom.Contributed to O'Reilly Radar and wrote a survey of e-Commerce and payment technology that focused on digital wallets and currency for PayPal in 2010.

Sebastopol, Ca, Us

I wrote a series of books for O'Reilly over the period of 2004 to 2007. Including "Maven: A Developer's Notebook", "Jakarta Commons Cookbook". I also co-authored "Harnessing Hibernate".

New York, Ny, Us

Bsee, Electrical Engineering

High School Diploma

Education record