Lima, Peru · Based at Paysafe
David Lujan
Design → Automate → Optimize with AISenior QA Automation Engineer (SDET) specializing in test automation for web, API, and mobile applications — and in applying AI to generate, optimize, and maintain test coverage. A background in process diagnosis sharpens where and how I automate: I don't just script tests, I identify what's actually worth testing.
A Better Way to Ensure Quality
From running tests to leading the intelligent system that runs them
I design, improve, and lead an AI-powered system that autonomously plans, automates, runs, and documents tests. It also maintains a real-time, up-to-date knowledge base, connected via MCP to Jira, Confluence, databases, and AWS. My role focuses more on guiding this system than running it on a case-by-case basis.
What I Do
Professional Focus
My professional experience revolves around software quality, combining test automation with a background in development and UX. This mix has allowed me to adapt easily to different projects and teams.
Primary focus
QA Automation & AI-Augmented Testing
Designing and maintaining automated test frameworks for web, API, and mobile applications, and applying AI to optimize test design and reduce redundant coverage.
Supporting capability
Product Owner Collaboration
Contributing to product development through backlog refinement, story definition, and prioritization strategies that bridge QA and product perspectives.
Work
Portfolio
Here you’ll find a selection of projects where I apply automation, testing, and other technical solutions across different contexts. Each project reflects how I approach real problems and build practical solutions.
Automation
Send WhatsApp messages quickly
Automated messaging solution for rapid communication via WhatsApp.
Finance project
Stock market investment simulator
A simulator to model portfolio behavior and test investment strategies.
Finance project
Web scraping and football match prediction
Scraped live football data and built a prediction model around it.
Automation
Web Automation with Selenium, Gherkin, JUnit, Java and POM
End-to-end framework using Page Object Model and BDD principles.
Automation
Web Automation and API with Playwright and Python
Full automation suite for web and API layers using Python.
Automation
Web automation with Serenity BDD, Gherkin and Screenplay
Gherkin and Screenplay pattern for readable, maintainable test suites.
Investing
Self-directed portfolio
Outside of work I manage a long-term personal investment portfolio. My positions, history, and performance are public on eToro.