Looking for a job

Radu Costin

@raducostin

Message

I test SaaS web and mobile products, with deep payments QA experience and practical Playwright automation experience.

Romania

Message

What I'm looking for

I'm looking for remote B2B or contract QA engagements where I can test SaaS web and mobile products, strengthen release readiness, and contribute to payments, subscriptions, API, and automation quality.

At Kahunas.io, I perform end-to-end QA for a UAE-based SaaS platform across web, iOS, and Android. I own functional, smoke, regression, exploratory, and release testing for production workflows.

I'm the go-to QA for payments and subscriptions, testing Stripe and PayPal scenarios across coach and client flows. I investigate customer-reported issues, reproduce defects, document evidence in Jira and Linear, and retest fixes before release.

I create and maintain Playwright/Typescript smoke automation for critical deployment flows using Page Object Model and AAA patterns. I also test APIs through Postman and GraphQL, often validating responses before frontend implementation is available.

Previously, I delivered manual QA across short-term web and mobile client projects at Quality Verified. I've independently owned QA for features, supported onboarding, and received Employee of the Month recognition for identifying a platform-wide data persistence defect.

Experience

Work history, roles, and key accomplishments

Current

QA Engineer

Current

Kahunas.io

Aug 2023 - Present (3 years 1 month)

Performed end-to-end QA across web, iOS, and Android for a UAE-based SaaS product, including functional, smoke, regression, and exploratory testing. Investigated customer-reported issues, collaborated with cross-functional teams, and served as the go-to QA for payments and subscriptions.