Senior QA Engineer, AI-Driven Fintech Platform

Cross River; Laza; Presencial; EUR 55.000 - 75.000; Jornada completa

Descripción de la vacante

Cross River is seeking a Senior QA Engineer to join our Card Processing team. You will design and build quality systems that keep our payment platform reliable at scale, with AI tooling guiding the process and engineers owning their tests.

You will own sensor strategy, validate test intent against business requirements, and raise the overall quality bar for the team as we push for faster delivery with safety and compliance in mind.

Formación

• 5+ years in software engineering with a strong focus on quality and testing (equivalence partitioning, boundary analysis, risk-based prioritization).
• Proficiency in Go (or willingness to learn) and test-design thinking matters over syntax.
• Demonstrated AI fluency—use AI assistants daily, know when they're wrong, and when not to rely on them.
• Experience testing RESTful APIs and event-driven systems.
• Familiarity with CI/CD pipelines, containerisation, and infrastructure-as-code.

Responsabilidades

• Design and implement layered quality sensors across our CI/CD pipeline—from static analysis to AI-driven code review passes.
• Improve and maintain E2E test suites for critical payment flows (authorisation, clearing and settlement, tokenisation, 3D Secure).
• Review PRs for test intent alignment—ensuring AI-authored and human-authored code meet the same quality bar.
• Identify test coverage gaps and prioritise them by risk (customer impact, regulatory exposure).
• Build load testing and performance validation frameworks.
• Collaborate with the team on quality strategy—raise the bar, not gatekeep it.
• Explore chaos engineering approaches to validate system resilience.
• Contribute to audit-trail thinking—ensuring generated diffs and suppressed checks are traceable.

Conocimientos

Go language

Test design

REST APIs

CI/CD

Analytical thinking

Herramientas

Datadog

New Relic

Elasticsearch

Grafana

Descripción del empleo

Cross River is seeking a Senior QA Engineer to join our Card Processing team. You will design and build quality systems that keep our payment platform reliable at scale, with AI tooling guiding the process and engineers owning their tests.

You will own sensor strategy, validate test intent against business requirements, and raise the overall quality bar for the team as we push for faster delivery with safety and compliance in mind.