Mariela Sánchez Fallas
Senior QA Engineer | QA Lead | Test Automation & Mobile Release Management | Playwright | API | Agile
Desamparados
Summary
Senior Quality Assurance Engineer with 8+ years of experience leading end-to-end QA processes across web, mobile, financial, and enterprise platforms. Proven track record establishing QA frameworks from scratch, driving automation initiatives, and managing mobile release approval processes. Experienced collaborating with cross-functional global teams to deliver high-quality products in Agile environments. Skilled in test automation, API validation, release management, and AI-assisted testing tools.
Overview
13
13
years of professional experience
3
3
Certifications
Work History
Senior QA Engineer
Encora
06.2023 - Current
- Responsible for the whole QA process for the migration of the site from one CMS to another.
- Work directly with the marketing team in order to review final assets, content, and constant updates needed on the client website.
Senior QA Engineer (Contractor)
Seso Labor
10.2024 - 03.2026
- Established and standardized the Quality Assurance (QA) process from scratch, implementing testing strategies and best practices in an organization with no prior QA structure.
- Coordinated QA activities across multiple cross-functional teams, working closely with managers to align testing efforts with project deadlines, priorities, and delivery timelines.
- Initiated and led the development of the Automation Testing Suite, leveraging automation and AI-driven tools such as Playwright and Cursor to improve testing efficiency and coverage.
- Owned the mobile application release approval process, ensuring quality validation, risk assessment, and successful deployment through end-to-end testing coordination.
- Managed testing efforts across multiple concurrent projects, including financial applications, onboarding flows, UI/UX (look & feel) enhancements, and API integrations.
QA Lead
Accenture
12.2021 - 06.2023
- QA Lead for AEM migration team.
- In charge of coordinating testing tasks with teams both in Costa Rica and the Philippines.
- Defect management and task management on Azure DevOps - Web and mobile testing.
- Responsive and cross browser testing.
- Currently leading the Costa Rica Automation Mavens Team.
QA Analyst
Fiserv
02.2018 - 12.2021
- QA Lead for Banking projects. In charge of coordinating resources in order to meet deadlines.
- Creation of test plan, test cases and reporting directly to the clients.
- Mobile testing for bank applications.
- Web testing for bank pages.
- Responsive and cross browser testing.
- In charge of Root Cause Analysis meetings in coordination with the development team.
- Defect management via TFS.
QA Automation Engineer
Fiserv
02.2020 - 12.2021
- In charge of the migration of manual test cases to Automated Script. (C#, Junit and Selenium).
- In charge of maintenance of the framework.
QA Analyst
Hangar
02.2017 - 02.2018
- In charge of the QA process of a complete account using Jira.
- Testing emails via litmus and on real clients.
- Testing of VEEVA presentations.
- In charge of planning all the testing processes of specific projects, working directly with the client to establish reasonable timelines for testing phases of projects.
- Creation of a process plan to ensure a more efficient system to avoid rework or Over time.
- Testing of mobile applications and web sites, both responsive and static.
- Testing of banners using Double click or in a direct staging link.
Web Developer
Accenture
03.2013 - 01.2017
- Develop web pages for iSales and iRep platform specifically for iPad. This for a pharmaceutical company which had all its products on a catalog on the red.
- Author AEM sites for different medical products and for a cable company catalog.
- Responsive sites that worked on Desktop, tables and mobile.
- Use of CSS3 and HTML to create page structure.
- Use of Bootstrap to ensure a better liquid design.
- Manage of CSS through Sass.
- Used to work with SVN while working on something at the same time as other team members.
QA Analyst
Accenture
01.2013 - 01.2017
- Be involved with the different cycles of the creation of specific projects.
- Received requirements, analyze them and set the scope for testing for each specific project.
- Develop test plan that will be followed on the complete testing process.
- Create specific test cases that ensure every section and requirement is properly tested without leaving anything behind.
- Be part of the different test runs (integration testing, functionality test, smoke test, regression test).
- Defect management directly with the client and through the HP Quality Center tool.
- Test applications created on Adobe AEM tool, given the technical knowledge in this area functional testing were applied focusing on the best solution to certain requirements, also a big part of the testing involved layout quality and a good cross browser performance.
Education
General Basic - undefined
Saint Michael School
01-2006
Bachelor in Secondary Education - undefined
Don Bosco Technical High School
01-2012
Computer Science Technician - undefined
Don Bosco Technical High School
01-2012
Skills
- Quality Assurance Strategy
- Test Automation (Playwright, Selenium, Cypress)
- Mobile Application Testing
- Release Management & Approval
- API Testing (Postman)
- Agile / Scrum Methodologies
- Cross-functional Team Leadership
- Regression & Functional Testing
- UI/UX Validation
- Defect Management
- Azure DevOps Jira HP Quality Center
- AI-Assisted Testing (Cursor)
- Web & CMS Testing (AEM)
Certification
ISTQB Fundamentals
Timeline
Senior QA Engineer (Contractor)
Seso Labor
10.2024 - 03.2026
Senior QA Engineer
Encora
06.2023 - Current
QA Lead
Accenture
12.2021 - 06.2023
QA Automation Engineer
Fiserv
02.2020 - 12.2021
QA Analyst
Fiserv
02.2018 - 12.2021
QA Analyst
Hangar
02.2017 - 02.2018
Web Developer
Accenture
03.2013 - 01.2017
QA Analyst
Accenture
01.2013 - 01.2017
General Basic - undefined
Saint Michael School
Bachelor in Secondary Education - undefined
Don Bosco Technical High School
Computer Science Technician - undefined
Don Bosco Technical High School
Telephones
+ 506 72232850
Personal Information
- ID Number: 1-1557-0562
- Date of Birth: 12/24/93