Dave Tamkun Email & Phone Number

San Francisco, Ca, Us

Boise, Idaho, Us

Implementing and Supporting Integration Technologies, including Confluent Kafka, MQSeries, IIB, and MIM across Azure, Linux, Windows, and zO/S platforms.

Hanover, Md, Us

San Francisco, California, Us

Created automated performance, baseline, and scalability tests for REST APIs using Jenkins, Python, JMeter, and New Relic.Created MongoDB cache warmup process leveraging performance tests for data retrieval and cache load.Identified internal and external performance bottlenecks, confirmed performance requirements met, and prevented performance defects in production via proactive, automated performance baseline tests.Mentored and coached offshore Devops team members on how to create and tune additional performance tests for critical endpoints.Point of contact for other projects starting their own performance baseline and scalability tests.

San Francisco, California, Us

Partnered with business stakeholders and product development managers, translating complex business requirements spanning 3 business domains, detailing technical stories for Plan Service development team, and eliminating risk of doubled or missed inventory purchases.Optimized end-to-end testing of new sizing and packing engine with legacy purchase order system by understanding system interactions and determining how to stage test scenarios.Automated PO generation troubleshooting, reducing resolution time by 98.5%.Created CI pipeline, test framework, and test strategy to add eCommerce products to Vendor Managed Inventory process, reducing vendor costs and enhancing DC inventory service levels.Built technical infrastructure via Chef, reviewing code, and signing-off delivered stories and test results. Configured SFTP-based integration to 3rd-party provider.

San Francisco, California, Us

Managed outsourced IT (Infosys and Covansys) in test development and execution across multiple products, orchestrating efforts and schedules from individuals and teams across the globe, overseeing test quality.Led implementation of 3 internal sizing / packing applications migrating from WebSphere / AIX to Tomcat / Linux, supporting 7 global markets and 250+ users.Oversaw testing and implementation of JDA Allocation for 2 international markets, partnering with global 3rd-party warehouse logistics teams to ensure process alignment with new data flows.Led onsite DC integration testing in Shanghai, China, supervising test execution and results. Coached and cross-trained integration support team, enabling offshoring.Improved integration error resolution time by 90% by automating the correction process.Implemented Oracle Retail Integration Layer for the Perpetual and Financial Inventory System, improving accuracy and timeliness of product inventory for 3 global brands.

San Francisco, Ca, Us

Installed, configured, and supported Retek Integration Layer (RMS/RCOM/RIB) for Retek Merchandising and Customer Order Management applications, writing custom integration software for Warehouse Management System / RIB integration in C++ to ship customer orders from the DC.Developed test and migration strategy, ensuring smooth migration of entire MQSeries Infrastructure through 2 separate data center moves to mitigate earthquake risks.Maintained MQSeries Integration infrastructure, linking eCommerce, Backend Order Processing, Bridal / Gift Registry, and Merchandising Systems on Windows, AIX, and AS/400 Platforms.Coached software development teams in best practice design and use of message-based integration, using MQSeries.

Atlanta, Ga, Us

Supported the company’s SAP Implementation by designing, building, and testing cross-platform application integration software using C++ and IBM MQSeries. This enabled the exchange of data between SAP and legacy systems on 3 different platforms.Coached internal software development teams on how to build applications using PowerBuilder and Coca-Cola’s application framework.