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João Carriço

@joocarrio

Performance Engineering specialist at Mastercard, testing Card Enrolment and Checkout payment services with JMeter and BlazeMeter.

Portugal
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At Mastercard, I test performance, load and volume for payment applications including Card Enrolment and Checkout, using JMeter and BlazeMeter. I analyze application performance with Dynatrace and contribute improvements to reporting and result interpretation.

At Valvoline Global Operations, I established and developed the Performance Engineering capability, creating the foundations for a scalable testing framework. I designed testing strategies and reusable assets, and introduced process and reporting improvements across projects.

Earlier, I delivered performance engineering and test automation for Caixa Geral de Depósitos and led non-functional testing initiatives at Altran Portugal S.A. Across enterprise and banking applications, I’ve worked on performance and load testing, automated functional test suites, and reporting that supports release decisions.

Experience

Work history, roles, and key accomplishments

Mastercard logoMA
Current

QA Specialist / Performance Tester Expert

Nov 2025 - Present (10 months)

Working remotely from Lisbon as part of Mastercard's global Performance Engineering organisation, collaborating with distributed engineering teams across the United States and India supporting large-scale payment platforms. Executes performance, load and volume testing using JMeter and BlazeMeter, validating microservices-based payment applications including Card Enrolment and Checkout services.

Valvoline Global Operations logoVO

Performance Engineering Consultant | Technical Lead

Jun 2024 - Oct 2025 (1 year 4 months)

Joined Valvoline Global Operations (Fortune 500) to establish and develop the organisation's Performance Engineering capability, designing the foundations for a scalable performance testing framework supporting business-critical applications. Designed Performance Engineering strategies, defining processes, best practices, reusable testing assets and non-functional testing approaches to support mul

CD

QA Specialist | Senior Performance Engineer

Caixa Geral de Depósitos

Jan 2021 - May 2024 (3 years 4 months)

Delivered Performance Engineering, Test Automation and Software Quality solutions for business-critical banking applications within Portugal's largest financial institution. Designed and executed performance, load and stress testing strategies for GUI and API-based applications, developing reusable testing assets and analysing application behaviour under realistic workloads.

AS

Performance Test Architect | QA Technical Lead | Test Manager

Altran Portugal S.A.

Feb 2016 - Dec 2020 (4 years 10 months)

Led non-functional testing initiatives across multiple enterprise clients, combining hands-on performance engineering with technical leadership, test strategy and process improvement. Designed performance testing approaches using JMeter, LoadRunner and other enterprise testing tools, supporting large-scale digital transformation programmes.

CI

Quality Assurance Engineer / Performance Tester

Crédito Agrícola - Serviços de Informação

May 2013 - Mar 2014 (10 months)

Delivered Performance Engineering activities for a major SEPA transformation programme, validating both legacy Mainframe systems and a new Third-Party Web Front-End before production deployment. Designed and executed Load, Stress and Performance Testing campaigns using HP LoadRunner across Mainframe and Web-based applications.

Education

Degrees, certifications, and relevant coursework

CC

CCP

Curso Formação de Formadores, Training of Trainers

2017 - 2017

Completed a Training of Trainers course.

HE

Hewlett-Packard

HP UFT Certified Tester, Software Testing

2016 - 2016

Official Hewlett-Packard training on HP-UFT (Unified Functional Testing).

TG

TSG - Testing Solutions Group

ISTQB Test Manager Training, Software Testing

2016 - 2016

Completed ISTQB Test Manager training.

IB

ISTQB – International Software Testing Qualifications Board

ISTQB Foundation Level Certified Tester, Software Testing

2014 - 2014

Earned the ISTQB Foundation Level certification.

IP

Instituto Superior Autónomo de Estudos Politécnicos

Graduation, Information Technology Management

2004 - 2008

Completed a 4-year graduation in Information Technology Management.

UV

Universidade de Évora

Graduation, Architecture

2003 - 2004

Started an Architecture graduation but did not complete the program.

NL

NIL – The New Institute of Languages

Extensive Learning, English

1997 - 2004

Studied English at basic, medium, advanced, and technical levels.

Tech stack

Software and tools used professionally

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