Senior AI Test Automation Engineer - Hybrid Madrid
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We are looking for the very Top Talent…and we would be delighted if you were to join our team!
More in details, UST is a multinational company based in North America, certified as a Top Employer and Great Place to Work company with over 35.000 employees all over the world and presence in more than 35 countries. We are leaders on digital technology services, and we provide large-scale technologic solutions to big companies.
What we look for?
We are looking for a Senior AI Test Automation Engineer to lead and evolve the test automation strategy for an advanced AI & MLOps platform. You will combine strong hands-on expertise in Python-based automation with the ability to design scalable frameworks and ensure quality across complex systems, including APIs, UIs, data pipelines, and AI/ML-driven components such as LLMs and RAG systems.
You bring a product mindset, end-to-end ownership, and experience working in Agile/SAFe environments, with a strong focus on quality engineering, reliability, and automation at scale. Exposure to AI/ML testing or a strong motivation to grow in this area is key.
Main tasks and accountabilities will be:
* Own the design, architecture, and evolution of the test automation framework for the AI & MLOps platform
* Define and implement scalable, reusable automation patterns (UI, API, data, BDD)
* Automate test cases using Python stack (Playwright, pytest, requests, pytest-bdd/Behave) applying clean code practices
* Design and execute AI/ML-specific tests (e.g., LLM evaluation, RAG validation, non-deterministic outputs)
* Integrate and orchestrate automated tests within CI/CD pipelines (GitLab), ensuring reliable execution across environments
* Provision and manage test environments using Docker and Kubernetes
* Plan and execute regression, smoke, and release test suites across DEV, INT, UAT, and pre-PROD
* Monitor execution quality, manage flaky tests, and ensure trustworthy test results
* Analyze defects, perform root cause analysis, and report issues with clear evidence in Jira
* Ensure full traceability from requirements to test execution and reporting
* Collaborate with cross-functional teams (ML Engineers, MLOps, Data Engineers, Product Owners)
* Act as Test Automation Ambassador, promoting best practices and guiding teams on tooling and strategy
* Ensure compliance with test policies, audit requirements, and data privacy standards
What do we expect from you?
* 5–7+ years of experience in test automation with strong hands-on Python expertise
* Proven experience designing and owning automation frameworks (not just writing tests)
* Solid experience with Playwright, pytest, API testing, and BDD frameworks
* Experience integrating automation into CI/CD pipelines (GitLab or similar)
* Knowledge of Docker and basic Kubernetes concepts
* Understanding of microservices, APIs, authentication, and distributed systems
* Exposure to AI/ML systems or strong interest in testing LLM-based and AI-driven applications
* Experience with test reporting, parallel execution, and flaky test handling
* Familiarity with Agile/SAFe environments and DevOps practices
* Experience with Jira and test management tools (e.g., Xray)
* Strong communication, ownership, and collaboration skills
* Awareness of security, data privacy, and working in regulated environments (finance, healthcare, etc.)
* Fluent English
Work Location
Hybrid position in Madrid (3 days at client´s office, Sol area, next to the underground).
Work Schedule
Full-time, 40 hours/week.
What can we offer?
23 days of Annual Leave plus the 24th and 31st of December as discretionary days!
Numerous benefits (Health Care Plan, teleworking compensation, Life and Accident Insurances).
`Retribución Flexible´ Program: (Meals, Kinder Garden, Transport, online English lessons, Health Care Plan…)
Free access to several training platforms
Professional stability and career plans
UST also, compensates referrals from which you could benefit when you refer professionals.
The option to pick between 12 or 14 payments along the year.
Real Work Life Balance measures (flexibility, WFH or remote work policy, compacted hours during summertime…)
UST Club Platform discounts and gym Access discounts
If you would like to know more, don’t hesitate to apply and we’ll get in touch to fill you in detail. We are waiting for you!
In UST we are committed to equal opportunities in our selection processes and do not discriminate based on race, gender, disability, age, religion, sexual orientation or nationality. xpzdshu We have a special commitment to Disability & Inclusion, so we are interested in hiring people with disability certificate.