Senior Manual QA Engineer

September 23, 2026

Remote

Senior

Warsaw, Poland

Important before applying

This job has conditions that may affect your decision to apply

English is required · B1 level

Description

A PCI DSS certified payment gateway for online businesses is looking for an experienced Manual QA Engineer to expand the team. The role focuses on ensuring the quality and stability of the Cashier Widget across browser and mobile integrations. You will develop and maintain test documentation, run functional and regression testing, and test REST APIs in close collaboration with developers and analysts. The position is full-time remote with flexible working hours, based in Warsaw, Poland.

Responsibilities

Develop and maintain test documentation, including specifications, test cases and test plans for backend and frontend functionality
Perform functional and regression testing across web and mobile environments
Test REST APIs using tools such as Postman and Charles Proxy
Test user flows across web interfaces and mobile applications
Identify, document and track issues in the bug tracking system
Collaborate closely with developers and analysts throughout the development lifecycle
Prepare clear and detailed reports based on testing results
Participate in discussions around new features and suggest improvements to product quality and user experience

Requirements

At least 3 years of experience as a QA Engineer
Hands-on experience testing both backend and web frontend applications
Good understanding of the software development lifecycle, distributed applications and microservices architecture
Good knowledge of SQL
Experience testing REST APIs
Experience testing web applications across different browsers and devices
Strong communication and collaboration skills
English level B1 or higher
Russian level C1 or higher
Nice to have: experience testing embedded widgets and mobile integrations using WebView
Nice to have: experience testing fintech products with high requirements for data security and integrity
Nice to have: broad technical knowledge across web, backend, mobile and integration technologies

Conditions

Full-time remote work opportunities and flexible working hours
Private insurance
Additional 1 day off per calendar year
Sports program compensation
Comprehensive mental health programme
Free online English lessons with a native speaker
Generous referral program
Training, internal workshops and participation in international professional conferences

SQLREST APIPostmanCharles ProxyMicroservicesfintech / paymentsWebViewFintech

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