David Winters Email & Phone Number

Menlo Park, CA, US

San Mateo, CA, US

• Architect of the Data Science and Engineering team that has developed a data platform on top of Apache Spark and Hadoop that supports the GoPro Internet of Things (IoT) for their consumer cameras and applications.
• Primary developer of a streaming data ingestion pipeline that is implemented using Spark Streaming, Kafka, and HBase. Responsibilities include the design, implementation, unit testing, load testing, tuning, deployment.
• Developed a streaming framework that supports dynamically generated DDL schemas which allows the publishers of the events to control their own schemas. This framework is used for all streaming and batch ingested data.
• Migrated all longterm storage of data from HDFS to S3; eliminating the maintenance and cost required for running multiple HDFS clusters. Event data is streamed directly into S3.
• Developed a schema-less dynamically-attributed user profile database using HBase and Hive that supports reporting through Tableau dashboards.
• Spearheading strategic POC projects such as Druid, Kubernetes, and leading move from EC2 instances to containers.

San Francisco, California, US

• Key contributing developer to software engineering team that developed a real-time transactional relational database on top of Hadoop.
• Expertise in system profiling to identify performance bottlenecks and making the related code and configuration changes to maximize overall system performance.
• Improved ingestion rate of the bulk write subsystem by 5X in performance through monitoring and analysis of load tests.
• Single-handedly developed and delivered the first web UI admin console on top of the Splice Machine Hadoop RDBMS. Features included visualization of SQL query plans and general health of the cluster. Built entire app.
• Extensive experience in tuning SQL queries for customers during time-crunched POC’s.
• Extensive experience with the three major Hadoop distributions (Cloudera, MapR, and Hortonworks).

Cupertino, California, US

• Led the development, program management, and technical web publishing teams responsible for the back end of Apple’s Global Online Store (http://store.apple.com).
• Managed a complex multi-million dollar development budget for one of the highest traffic commerce sites in the world.
• Hands-on manager who rolled up his sleeves and contributed code, delivering a production application to manage capitalized and operational budgeting.
• Experienced in managing and coordinating both full time and contingent workforces on the same engineering team.

San Jose, CA, US

• Directed teams responsible for the development and quality assurance of all front end and back end e-commerce features on the most profitable photo sharing web site (http://www.shutterfly.com).
• Identified and implemented best practices and improvements to agile development processes to improve project launch estimation, time to market, and site quality.
• Provided direct agile coaching and mentoring to team leaders.
• Managed technology roadmap and capacity planning, including coordination with key company stakeholders.
• Managed a multi-million dollar development budget, including vendor management.

San Mateo, California, US

• Directed teams responsible for continuously delivering front end and back end features on the largest and most profitable comparison shopping e-commerce website (http://www.nextag.com/), which receives greater than 2.
• Project managed key revenue generating software projects for the company. Direct experience serving as the ScrumMaster and leading all Scrum meetings and activities.
• Responsible for training and mentoring members of the Scrum team including ScrumMasters, product owners, team members, and external team members such as business stakeholders and senior level management.
• Starting with an inexperienced team built a motivated, collaborative, and highly productive team through hiring and coaching.
• Owned project tracking and reporting of progress and activity on software development and release. Setup projects and milestone reporting in Agile tracking systems (Jira GreenHopper and ScrumDo).
• Dealt personally with resolving team conflict and gaining consensus to team goals to remain on target. Mentored and trained team members in the transition to the Scrum framework.

• Managed the engineering teams, comprising a staff of 18 people, responsible for Blue Martini's Relationship Marketing, Business Intelligence, and Clienteling enterprise product lines that were used by several top.
• Responsible for release delivery, continuous automated build and unit test system, bug tracking system, version control system, and build tools. This included support of four geographically separated development teams.
• Created project plans and tracked project status through Microsoft Project. Coordinated twice weekly project status meetings with three geographically separated teams.
• Took significant ownership of the product requirements process and worked closely with customers and prospects, along with product management and sales, to define and refine product requirements.
• Routinely involved in technical support and customer escalations, understanding customer issues, setting expectations, and managing customer issues to resolution.
• Frequently involved in sales and implementation cycles, providing technical guidance.

• Technical lead and architect for Blue Martini's Contact Center product, one of the first web-based call center products with full quick key support. Contact Center allowed CSR's to support B2B and B2C customers by.
• Provided mentoring to engineers on design, implementation, and enhancement of enterprise applications.
• Main contact and owner for all technical issues involving technical support, quality assurance, technical publications, and product management teams.
• Architect for Blue Martini's B2B Commerce API. Modules included: Account Management, Lead Generation, Product Catalog, Contract Pricing, Order and Payment Processing, Personalization, Promotional Pricing, Product.
• Spent significant time on-site with clients resolving implementation issues.

Milpitas, CA, US

• Designed, developed, and deployed custom web applications for external clients. [Tags: Perl, Java, JSP, Apache, Oracle]
• Designed and built data warehouses and reporting systems for external clients. [Tags: Perl, C, Shell Scripts, Oracle, Crystal Reports]
• Spent time on site with customers for requirements gathering, training, and deployment.

Milpitas, CA, US

• Designed, developed, and deployed custom web applications, data warehouses, and reporting systems for internal clients. [Tags: Perl, C, Shell Scripts, Oracle, Sybase]