# Senior QA Engineer (Native Apps)

> Alex Staff Agency · Slovakia (Remote) · — · Posted 2026-04-13

**Workplace:** remote

## Description

We are looking for a **Senior QA Engineer** to join a stable American EdTech corporation that has been a market leader since the 1990s. You will be responsible for ensuring the quality of high-traffic native applications (iOS, Android, and Desktop) used by millions of users worldwide.

We need a fundamental engineer who understands client-server architecture, can dive deep into microservices, and isn't afraid to analyze logs to find the root cause of an issue.

**Key Details:**

-   Long-term B2B contract with a US-based entity.
-   100% Remote (GMT 0 - GMT+2 zone).
-   Russian/Ukrainian for internal communication; English for documentation and syncs with the US office.
-   70% Manual / 30% Automation.

### **Responsibilities**

-   Perform end-to-end testing of native iOS, Android, and Desktop applications.
-   Validate complex client-server interactions, including data synchronization and offline modes.
-   Conduct deep-dive debugging using Charles Proxy, Xcode, Android Studio, and Linux CLI.
-   Analyze backend logs (Kibana, Grafana) to investigate distributed system issues.
-   Maintain and extend the existing automation framework using Ruby and RSpec.
-   Collaborate closely with US-based product teams and local developers in an Agile environment.

## Requirements

**\-** 5+ years in QA, with a strong focus on **Native Mobile** applications.

**\-** Strong understanding of HTTP, REST API, JSON, and microservices.

**\-** Proficiency with sniffing tools (Charles/Fiddler) and mobile debugging (ADB, Logcat).

**\-** Experience with any automation stack and a willingness to work with **Ruby**.

**\-** Familiarity with Linux command line and Docker.

**\-** Upper-Intermediate English or higher

## Benefits

**\-** Join a team where the average engineer tenure is 5+ years.

\- Work on a product that impacts millions of students and educators.

\- Access to modern tools and a highly technical engineering culture.

**\-** Budget up to **$3,500** per month.

## Apply

[Apply at Alex Staff Agency](https://apply.workable.com/alex-staff-agency-careers/j/2BB0C30C31/apply)

---
Powered by [Workable](https://www.workable.com)