OSCAR LERMA FERNANDEZ
@oscarlermafernandez
Senior Quality Engineer specializing in performance engineering, test automation, and API testing at scale.
MexicoWhat I'm looking for
I’m a Senior Quality Engineer with 4+ years of experience in Performance Engineering, Test Automation, API Testing, Mobile Testing, and Enterprise Quality Assurance. At Accenture, I supported large-scale distributed systems across 35 interconnected applications, executing Load, Stress, Endurance, Scalability, and Volume testing with Apache JMeter—simulating workloads up to 10,000 TPS and validating 1M+ transactional records across multiple regions.
I also build automation that teams can trust and reuse. I developed 8 API-based utilities to improve test preparation efficiency, achieved up to 90% automation coverage on critical initiatives, and validated 200+ REST API endpoints. I perform bottleneck analysis and performance triage, administer 40+ Splunk/AppDynamics dashboards, and lead QA teams of 4–10 members while integrating automated execution into CI/CD pipelines.
Experience
Work history, roles, and key accomplishments
Supported performance engineering across 35 interconnected applications, running load, stress, and 96-hour endurance tests to identify stability and memory issues. Simulated workloads up to 10,000 TPS, validated 1M+ transactional records, and developed 8 API utilities to improve test preparation efficiency.
Designed and maintained web, mobile, and API automation frameworks using Selenium, WebdriverIO, and Appium, reaching up to 90% automation coverage on critical initiatives. Validated 200+ REST API endpoints and integrated automated execution into CI/CD pipelines while leading QA teams of 4–10.
Performed Salesforce functional testing and workflow validation, executing ~80 manual test cases per month. Validated configurations, business rules, sales workflows, and data integrity while supporting defect management, regression testing, and release validation.
Developed automated UI test suites for web, iOS, and Android, automating customer-facing workflows with Selenium, WebdriverIO, and Appium. Performed cross-browser, cross-device, and Flutter application validation, improving regression efficiency through reusable automation components.
Education
Degrees, certifications, and relevant coursework
Instituto Tecnológico de Durango
Bachelor of Science, Electronic Engineering
2015 - 2020
Earned a B.S. in Electronic Engineering at Instituto Tecnológico de Durango from 2015 to 2020.
Tech stack
Software and tools used professionally
Availability
Location
MexicoAuthorized to work in
Job categories
Skills
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