Platform Software Test Engineer at Telus Digital

Diego Klein

SDET & QA Automation Engineer

I design and build test automation systems that give engineering teams the confidence to ship at speed — from framework architecture to CI/CD quality gates.

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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
4+
Years in QA Engineering
5
Companies & Products Shipped
3
Languages Spoken Fluently
3+
QA Pipelines Built in CI/CD

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
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

Tools and technologies I use to build reliable, maintainable quality systems.

Test Automation

PlaywrightCypressSeleniumRobot FrameworkEspressoGoogle Test

Languages

JavaJavaScriptPythonC++SwiftSQL

API & Backend Testing

PostmanPactumJSREST APIsMSSQLDBeaverNoSQL

CI/CD & DevOps

JenkinsAzure PipelinesCI/CDGitGitHubCloud Computing

Methodology

BDDCucumberAgileScrumFunctional TestingOOP

Frontend & Mobile

ReactNext.jsNode.jsjQueryCSSAndroid Studio

Tools & Platforms

JiraTestLinkAzure Test PlansFirebaseAzureDBeaver

Languages Spoken

EnglishSpanishPortuguese
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.

Email

diego.klein.work@gmail.com

LinkedIn

/in/diegozklein

GitHub

/diegozklein