Efraín R. Email & Phone Number

San Francisco, Ca, Us

Austin, Texas, Us

* Defined technical direction and led implementation of several key greenfield projects within the core freelancer marketplace, resulting in a highly available and reliable system supporting 100k daily active users.* Collaborated with ML engineers and data scientists to improve the accuracy of the speech models used to generate transcripts for customer media files in Rev.AI, and to use data from AI-generated transcripts to improve job listings for our human freelancer pool, leading to faster delivery times and improved quality of work for both human and machine transcription.* Architected and implemented an improved grading workflow process that improved the quality of delivered work while preserving our standard turnaround time for customers.* Provided insight and guidance on technical issues and decisions to Engineering and Product managers. * Mentored teammates to get them up to speed with understanding our architecture and helped them build the skills needed to advance in their career.

Austin, Texas, Us

* Led efforts to significantly tune many high-traffic SQL Server database queries and procedures that are crucial to the freelancing marketplace, yielding about 50% on average in performance gains.* Helped define the technical vision of an automated payout system with a cross-functional team that eliminated laborious manual processes to issue payments to tens of thousands of freelancers. Drove the architecture and implementation of several core aspects of the process, including the ability to use multiple payout providers, decoupling payout account information from user information in the database, and administrative support for handling failed payouts.

Odenton, Maryland, Us

* Developed a mobile application on iOS and Android for one of the largest insurance consortiums in the Caribbean, Grupo Universal, enabling access to their services to more than 800,000 customers. Worked on in-app services such as roadside assistance, healthcare coverage, provider search, claims and online payments. Developed in .NET using Xamarin Forms.

* Defined project architecture, oversaw the implementation of development tools to use in our client projects, and of improvements in coding practices such as source control and unit testing.* Developed admin UI and public-facing site to manage and present content and statistics related to the progress of the Dominican Republic towards accomplishing the UN’s Millennium Development Goals.* Developed site used by several government institutions to register and track their required budget for Congress approval as delineated by Dominican law.

Santo Domingo, Distrito Nacional, Do

* Contributed to development of internal CRM Application that covered enterprise processes to manage inventory, customers, payments.* Contributed to development of a mobile web platform used by company field technicians for repairs and customer service.

Basking Ridge, Nj, Us

* Created and executed test plans for internal applications, communicated with software engineers to report bugs through Verizon’s internal ticketing system.* Queried Oracle SQL databases and Solaris server logs as part of the QA process.* Built automated regression tests using HP QuickTest Pro.