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.

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.

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.

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.