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Kenneth Perez

@kennethperez

Senior QA Engineer validating a retail loss-prevention platform across database, API, backend, and UI layers.

Bolivia
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On a retail loss-prevention platform used by major US retailers, I validate data and business logic across database, API, backend, and UI layers. I’ve caught significant defects before production, including one that would have made a process run more than 20 times longer than expected.

I review user stories and acceptance criteria before implementation, then use SQL Server and Postman to trace data flow and check backend-to-UI consistency. I also investigate complex behavior across components, reports, logs, and overnight batch processing.

At Jalasoft, I tested Android, iOS, and web CRM applications. I planned and executed test cases, investigated customer complaints, and led product demonstrations and user acceptance testing for groups of about 50 users.

Earlier, I tested healthcare and university CRM products at Digital Harbor and Jalasoft, and monitored servers supporting Western Union money-transfer operations. I also built static websites with Jekyll and WordPress, and I’m currently learning Playwright through introductory tests for a sample website.

Experience

Work history, roles, and key accomplishments

UC
Current

Senior QA Engineer

US retail loss-prevention software company

Feb 2022 - Present (4 years 9 months)

Test a complex, data-intensive loss-prevention platform used by major US retailers, processing millions of transactions daily across database, API, backend, and UI layers. Review user stories and acceptance criteria, validate data and business logic using SQL Server and Postman, and coach QA colleagues on complex features.

EP

Independent Web Development

Entrepreneurial projects

Jan 2012 - Dec 2022 (10 years 11 months)

Built static websites with Jekyll and WordPress sites on a LAMP stack, using Bitbucket repositories to avoid dedicated server costs.

DH

QA Engineer

Digital Harbor

Sep 2016 - Mar 2017 (6 months)

Performed QA for a healthcare formulary application used by physicians in California, planning testing against product specifications and tracking quality metrics. Temporarily took on Scrum Master duties, coordinating a cross-functional team and guiding QA teammates.

JA

Quality Engineer

Jalasoft

Sep 2014 - Sep 2016 (2 years)

Tested a CRM platform for US university faculties, applying black-box testing, building and reviewing test plans, and verifying fixes with developers. Estimated testing effort and suggested process improvements during the transition from Waterfall to Agile.

Education

Degrees, certifications, and relevant coursework

Universidad Técnica Nacional logoUN

Universidad Técnica Nacional

Associate's Degree, Computer Software Engineering

2011 - 2015

Associate's Degree in Computer Software Engineering from Universidad Técnica Nacional, Costa Rica, completed from 2011 to 2015.

Tech stack

Software and tools used professionally

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