Senior Quality Engineer (QA)

September 19, 2026

Office

Senior

Madrid, Spain

Important before applying

This job has conditions that may affect your decision to apply

Office-only work

Description

Frontiers is rebuilding its Publishing Platform around a manuscript-first architecture with embedded AI agents, replacing legacy systems with modular, scalable services. As a Senior Quality Engineer you will work independently to embed quality across the whole development lifecycle, shifting testing left and building validation into CI/CD rather than validating only at the end. You will own release-readiness decisions, use production signals to close the loop, and coach the wider team on testing practices and the effective use of AI tools.

Responsibilities

Drive validation strategy independently, deciding what to test, at what level and how, starting before development begins
Define test scenarios covering key flows, edge cases and risk areas
Challenge non-functional requirements such as performance, reliability and security
Build and maintain automated tests (API, integration, end-to-end) running continuously in CI/CD
Own release-readiness calls and post-release checks, using production signals such as errors, logs and metrics
Coach the team on testing practices, shared quality ownership and effective use of AI tools
Contribute to the wider Quality Engineering community and standards

Requirements

5+ years in Quality Engineering / QA, with experience defining validation strategy independently
Strong systems thinking and ability to spot risks and failure points across component interactions
Experience with API testing (REST Assured, Postman)
Experience with integration and end-to-end testing
Hands-on CI/CD-integrated test automation
Experience with performance testing (k6, JMeter)
Comfortable working with minimal oversight and making risk trade-off calls
Curiosity about AI-assisted testing tools
Nice to have: contract testing (Pact), Playwright, BDD, large-scale migrations
Nice to have: comfortable reviewing pull requests and contributing to test code when needed

Conditions

Office presence is prioritised with in-person collaboration, plus adjustments where needed per company policy
Extra wellbeing days on top of the annual leave allowance
Up to 3 paid volunteering days each year
24/7 confidential Employee Assistance Programme covering wellbeing, mental health, legal and financial support
Learning and development support via the Frontiers Learning Hub
Competitive local benefits, country dependent, such as healthcare and pension/retirement provision

REST AssuredPostmank6JMeterCI/CDacademic publishingPactPlaywrightBDD

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