> Djinni

QA Engineer

Mantah

company:Outsource

api testingsqlmanual testingperformance testingtest planningtest design

reactphpgo

englishB2

experience3+ years

domainFintech

> full description

Mantah is looking for a QA Engineer to join an international project focused on API and integration testing for a financial services organization.

Customer — an international organization operating in the financial and protection services domain, providing customer-oriented solutions across multiple business areas and markets. The company focuses on digital capabilities, operational excellence, and technology-driven service innovation.

Project — a solution that develops and maintains an integration layer enabling seamless communication and reliable data exchange between core systems and multiple external platforms, supporting critical business processes.

Working schedule: from 9:00 AM to 6:00 PM CEST.

Technology stack: APIs, web applications, backend services, SQL, databases, enterprise integration patterns, React, PHP, Go, AI-assisted testing tools.

Responsibilities:

Ensuring backend systems reliability and performance through functional and non-functional API testing;
Owning the end-to-end quality of web and backend platforms;
Creating, maintaining, and executing test plans and test cases across multiple browsers and platforms;
Testing new features and providing actionable feedback to development and IT teams;
Contributing to test strategies for API and integration testing;
Analyzing and troubleshooting issues, documenting findings, and working with relevant teams on their resolution;
Identifying opportunities to improve software quality and optimize API testing processes.

Requirements:

3+ years of commercial experience in software testing;
Strong experience creating API requests, reviewing API documentation, and designing comprehensive test scenarios covering functional, non-functional, performance, and reliability aspects;
Hands-on experience designing and executing test strategies for APIs, integrations, and database-level validations;
Strong understanding of backend systems, databases, SQL, and system architecture fundamentals;
Experience with test planning, design, and execution for both frontend UI and backend services;
Solid understanding of enterprise integration patterns and workflows;
Hands-on experience testing modern web applications and eCommerce platforms;
Familiarity with Spec-Driven Development and AI-assisted delivery practices;
Hands-on experience with AI tools such as Claude for generating and reviewing test scenarios, test cases, automation scenarios, and QA documentation;
Ability to critically evaluate AI-generated outputs, identify gaps and edge cases, and ensure alignment with business requirements;
Experience using AI to improve testing efficiency while maintaining high-quality standards;
English level — Upper-Intermediate or higher.

Will be a plus: