Senior QA Engineer

Jobgether SRL; España; On-site; EUR 75,000 - 110,000; Full time

Benefits offered by this job

Senior IC role

Product squad ownership

AI-assisted QA tooling

Cross-team collaboration

European-based flexibility

Job summary

Jobgether SRL in Spain seeks a Senior QA Engineer embedded in a product squad responsible for quality strategy, automation, performance, and integration in high-risk fintech domains.

The role goes beyond execution, owning architecture, quality gates, and challenging testing problems, while mentoring engineers and collaborating with product and engineering from the earliest stages.

Qualifications

• 5+ years of QA engineering experience in a software product environment.
• Ability to write production-quality tests in Java, Python, or JavaScript for CI.
• Deep API testing experience: REST, contract testing, and JSON schema.
• Hands-on performance and load testing experience.
• Strong Java backend understanding and test design for distributed systems.
• Autonomy with limited QA management and cross-team influence.
• Fintech/payments domain experience preferred.
• Familiarity with Pact or equivalent contract testing tools.
• Mobile testing with Espresso or Appium is a plus.
• Experience in AI-assisted QA workflows and mentoring.

Responsibilities

• Embed within an engineering squad as a core technical contributor.
• Define and refine acceptance criteria with Product Owners.
• Own test architecture and strategy across unit, integration, and E2E tests.
• Lead performance and load testing, deriving actionable improvements.
• Own Definition of Done and quality gates for releases.
• Design and maintain automated test suites for CI environments.
• Triage failures, distinguish flaky tests from regressions in high-risk areas.
• Mentor QA engineers and raise automation standards.
• Contribute to broader QA initiatives and tooling decisions.
• Drive strategic QA initiatives like contract-testing or AI-assisted workflows.
• Leverage AI/LLM tooling for test generation, data, and regression analysis.

Skills

Test automation

API testing

Java

Python/JavaScript

Performance testing

Mentoring

Fintech domain

Contract testing

AI-assisted QA

QA architecture

Tools

Pact

Espresso

Appium

Job description

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior QA Engineer based in Spain.

This is a senior individual-contributor role embedded directly within a product squad working on complex, high-risk technology domains.

You’ll act as the squad’s technical authority on quality, shaping test strategy, automation, performance, and integration practices.

The role goes beyond test execution, giving you ownership of architecture, quality gates, and the most challenging testing problems.

You’ll work closely with engineering and product teams from the earliest stages, challenging ambiguity before development begins.

You’ll also contribute to broader QA standards, mentor engineers, and lead initiatives that improve testing across the wider organization.

The environment values technical depth, autonomy, continuous improvement, and practical use of modern AI-assisted QA tooling.

It’s an opportunity to make a meaningful impact on reliable, high-scale financial technology as a senior technical leader without moving into management.

Accountabilities

• Embed fully within an engineering squad, participating in sprint planning, daily standups, reviews, retrospectives, and other ceremonies as a core technical contributor.


• Define and refine acceptance criteria with Product Owners, identifying ambiguity and quality risks before implementation begins.


• Own the squad’s test architecture and strategy, determining how unit, integration, contract, and end-to-end testing work together and identifying coverage gaps.


• Lead performance and load testing, establishing baselines, evaluating throughput and concurrency limits, and translating findings into actionable engineering improvements.


• Own the squad’s Definition of Done and quality gates, serving as a final internal quality check before releases progress to staging or production.


• Design, maintain, and improve automated test suites that remain reliable, readable, maintainable, and effective within CI environments.


• Triage complex test failures and distinguish flaky tests from genuine regressions, particularly across high-traffic, high-risk, or highly integrated areas.


• Mentor QA Engineers within the squad and across the wider QA community, raising standards around automation, test design, and engineering practices.


• Represent the squad in broader QA initiatives and contribute to chapter-wide standards, tooling decisions, onboarding resources, and testing practices.


• Take ownership of a strategic QA initiative, such as a contract-testing framework, performance-testing toolkit, testing discipline, or AI-assisted test generation workflow.


• Actively leverage AI and LLM tooling for test case generation, synthetic data creation, regression triage, documentation, and other areas where automation can accelerate QA work.

Requirements

• 5+ years of QA engineering experience in a software product environment, with demonstrated ownership of testing strategy for complex technical domains.


• Strong test automation engineering skills, with the ability to write production-quality tests in Java, Python, or JavaScript and build stable, maintainable suites that run effectively in CI.


• Deep experience with API testing, including REST APIs, contract testing, integration testing, HTTP semantics, and JSON schema validation.


• Hands-on experience with performance and load testing, including designing tests, interpreting throughput and concurrency results, identifying bottlenecks, and translating findings into engineering action.


• Strong experience working in Java-based backend environments, with the ability to understand application architecture, read Java code, and create tests that accurately reflect system behavior.


• High level of technical autonomy and confidence operating without a dedicated QA manager, with the ability to make sound quality decisions and represent QA practices across teams.


• Proven ability to mentor other QA engineers, improve engineering standards, and lead through technical expertise rather than formal authority.


• Experience in fintech, payments, or digital financial services is strongly preferred, particularly where reliability and correctness are critical.


• Familiarity with contract testing tools such as Pact or equivalent approaches within microservices environments is a strong advantage.


• Mobile testing experience, particularly Android, using tools such as Espresso or Appium, or structured manual testing supported by regression frameworks, is beneficial.


• Experience contributing to a QA chapter, guild, community of practice, or internal training program is valued.


• Familiarity with AI-assisted QA workflows, including LLM-based test generation, regression analysis, and synthetic test data creation, is a plus.

Benefits

• Opportunity to work as a senior technical individual contributor with substantial ownership and influence.


• Full integration into a product squad, with a direct role in engineering decisions and product delivery rather than functioning as a downstream QA resource.


• Opportunity to shape testing standards, architecture, tooling, and quality practices beyond your immediate squad.


• Strong platform for technical leadership and mentoring without requiring a transition into people management.


• Exposure to complex, high-scale fintech and digital financial services systems where software quality has a direct customer and business impact.


• Opportunity to lead organization-wide QA initiatives and introduce improved testing disciplines and tooling.


• Flexible European-based working environment with collaboration across international engineering teams.


• Opportunity to work with AI-assisted testing and modern QA automation practices as part of an evolving engineering environment.