Platform Software Test Engineer at Telus Digital

Diego Klein

SDET & QA Automation Engineer

From fintech payment terminals to hotel platforms serving thousands of properties worldwide — I build the quality systems that make shipping feel safe. Framework architecture, CI/CD pipelines, and the culture to sustain them.

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About

Quality is a systems problem.

I'm Diego Gabriel Zuniga Klein — a QA and Test Automation Engineer with a software engineering background and a track record of building quality systems that scale. I've grown from mobile automation intern to leading QA strategy for global platforms, gaining depth across UI, API, and mobile testing along the way.

My work spans the full testing stack: designing BDD test architectures, building CI/CD pipelines alongside DevOps teams, mentoring junior engineers, and advocating for quality standards at the product level. I'm fluent in English, Spanish, and Portuguese — which means I collaborate effectively across distributed, international teams without friction.

I believe strong QA isn't just about catching bugs — it's about building the systems, habits, and culture that make them less likely to slip through in the first place. Whether I'm authoring a Cypress suite, reviewing automation PRs, or running an internal workshop for devs, I bring full ownership and clarity to every layer of the pipeline.

PlaywrightCypressRobot FrameworkPostmanJenkinsJavaPythonBDD
Diego Klein — QA & Test Automation Engineer
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Companies & Products Shipped
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Breaking Deployments Prevented
0%
Reduction in CI Noise
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CI/CD Pipelines Designed & Shipped

What I bring

  • UI, API & mobile test automation
  • CI/CD pipeline design & DevOps collaboration
  • BDD test architecture & documentation
  • QA mentorship & cross-team process leadership
Experience

Where I've worked

Platform Software Test Engineer

Telus DigitalRemote

Jul 2025 — Present

Leading quality engineering for a major international hotel franchise network spanning thousands of properties worldwide, embedded in a cross-functional, globally distributed team.

  • Established and scaled QA processes and best practices across the team, raising the quality baseline from day one
  • Conduct code reviews on automation PRs to enforce code quality, maintainability, and adherence to team standards
  • Deliver both manual and automated test coverage across a complex hospitality platform with thousands of global properties
  • Execute structured API test campaigns using Postman, aligned with company standards and project requirements
  • Partner with the Tech Lead in product meetings to surface process gaps and define long-term quality goals
  • Successfully advocated for expanded QA resourcing, presenting a compelling case to engineering leadership
  • All meetings, documentation, and communications conducted in English with international, cross-functional teams
PlaywrightPostmanJiraBDDCI/CD

Quality Assurance Mid III

Creare SistemasPorto Alegre, RS

Jul 2024 — Jul 2025

Owned QA strategy and automation tooling for a vehicle fleet management and video telematics platform, while driving team capability growth across testing practices.

  • Spearheaded the design and rollout of QA processes and automation standards across a fast-scaling engineering org
  • Co-designed CI/CD test pipelines in Jenkins with the DevOps team for both frontend and backend workstreams
  • Led Git workflow training sessions for the QA team, improving collaboration hygiene and reducing friction in code reviews
  • Mentored QA engineers on Cypress and modern testing tooling, accelerating the team's automation output
  • Owned PR reviews for automation code, driving consistent patterns and long-term maintainability
  • Built automated backend API test suites using Postman, following company-wide standards
  • Executed comprehensive manual test campaigns across a vehicle fleet management and video telematics platform
CypressJenkinsPostmanGitBDD
Featured ProjectIn Development

Capyba.ai

AI-First Personal Finance

Most finance apps give you data. Capyba gives you understanding. Built AI-first from the ground up, it turns your transaction history into a conversation — surfacing what actually matters about your money without requiring you to become a spreadsheet person.

AI-Powered Insights

Surfaces spending patterns, unusual charges, and savings opportunities in plain language — no charts to interpret, just answers.

Smart Categorization

Transactions are automatically understood and grouped with context — not just tagged by merchant name, but by what you actually spent on.

Conversational Finance

Ask anything about your money in natural language. Budget vs. actuals, end-of-month projections, or just 'am I spending too much on food?'

Next.jsTypeScriptOpenAISupabaseStripeTailwind CSS
Visit Capyba.aiPrivate repo
Capyba.ai dashboard — AI-first personal finance app
Projects

Featured work

Tools and systems I've built to push quality engineering forward.

El Sendero

Private Cabin Retreat

A landing page for a handcrafted cabin retreat tucked into the forests of Curacautín, Chile. Built to convert — direct booking, Airbnb integration, bilingual support, a photo gallery, guest reviews, and an FAQ section. Designed to feel as warm and intentional as the space itself.

Impact — Live product driving direct bookings for a 5-star rated property on Airbnb.

Next.jsTypeScriptTailwind CSSFramer MotionStripeVercel

API Sentinel

Contract Testing Tool

A lightweight API contract testing CLI written in Python that validates REST API responses against OpenAPI specifications, detects schema drift across environments, and integrates with Slack and PagerDuty for instant alerting. Production-tested across 3 microservices.

Impact — Prevented 15+ schema-breaking deployments from reaching production.

PythonOpenAPIFastAPIPactDockerSlack API

Quality Pulse

QA Metrics Dashboard

An internal analytics dashboard that aggregates test execution data, flakiness rates, coverage trends, and build success metrics across multiple CI pipelines. Gave QA and engineering leadership real-time visibility into quality health across the org.

Impact — Surfaced flaky tests responsible for 30% of CI noise; enabled targeted fixes.

Next.jsTypeScriptDatadog APIRechartsPostgreSQL
Skills

Tech stack

Organized by proficiency — not just presence on a resume.

Expert

—Used daily across multiple production projects
PlaywrightCypressPostmanBDD / CucumberSeleniumRobot FrameworkGitJira

Proficient

—Comfortable shipping production-grade work
JavaPythonJavaScriptTypeScriptJenkinsAzure PipelinesCI/CDSQLAgile / ScrumPactumJSAzure Test PlansAllure

Familiar

—Worked with in projects or personal exploration
ReactNext.jsNode.jsSwiftC++EspressoAndroid StudioFirebaseAzureNoSQLTestLinkDocker
Education

Background

Bachelor of Software Engineering

PUCRS — Pontifícia Universidade Católica do Rio Grande do Sul

Porto Alegre, RS, Brazil

Major in Software Engineering. Strong foundation in software architecture, algorithms, data structures, systems design, and agile project management — directly informing how I approach test strategy and automation architecture.

2019 — Ongoing

Apple Foundations Program

Apple

Built a mental health iOS app using Swift & SwiftUI. Studied UI/UX design principles and human-centred design thinking.

Jun 2019

Software Development Internship

DBServer

Built a Java Spring Boot task submission web app using Scrum, gaining early hands-on experience with full-stack development and Git.

Apr 2017 — Apr 2018

Contact

Let's build
something great.

Whether you're looking for a senior SDET to join your team, want to talk quality strategy, or just want to compare notes on testing frameworks — I'd love to hear from you.

Send me an email
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