Senior QA Engineer – API Testing

Location: Spain

Department: QA Team

We are a global technology consulting company specializing in IT solutions, cloud-based platforms, mobile and web applications, and training and support services. With over 14 years of experience and a multicultural team of more than 100 professionals, we deliver projects for highly complex industries such as pharmaceuticals, diagnostics, healthcare, and consumer goods.

At our company, we value international talent, diversity, flexibility, and a collaborative environment that fosters both professional growth and personal well-being.

About the role

At Nuvolar, we are looking for a Senior QA Engineer to join one of our healthcare projects, working on digital health solutions that support complex workflows and critical software platforms.

You will become part of a technical team responsible for ensuring the quality of a platform that manages sensitive healthcare information, integrations, and services within a complex digital health ecosystem.This role is a great opportunity for a QA Engineer who enjoys understanding complex products, defining quality strategies, designing meaningful test scenarios, and collaborating closely with developers and product teams to deliver reliable software.

As the first QA Engineer joining this product team, youll have the opportunity to shape how quality is built into the product from the early stages. Rather than joining an established QA function within the team, youll define testing strategies, introduce best practices, and help embed quality throughout the development lifecycle while working closely with developers and product stakeholders.

🧠 What You’ll Do

• Define and execute the QA strategy for backend services, APIs, integrations, and critical product workflows.
• Understand the product domain and translate business requirements into effective test scenarios.
• Design, maintain, and execute test plans covering functional testing, regression testing, integration testing, exploratory testing, and edge cases.
• Perform backend and API testing using tools such as Postman and OpenAPI/Swagger specifications.
• Validate REST APIs, data consistency, error handling, authentication flows, and integration scenarios.
• Work with relational databases such as PostgreSQL to validate data integrity and support testing activities.
• Contribute to test automation initiatives by maintaining and improving automated test suites.
• Analyse logs, traces, and system behaviour using monitoring and observability tools.
• Collaborate closely with developers, Product Owners, and technical stakeholders to identify risks early and ensure release readiness.
• Drive continuous improvement of QA practices and help establish quality standards within the team.

✅ What We’re Looking For

• Proven experience as a QA Engineer working on software products, backend services, REST APIs, or integration-heavy platforms.
• Strong experience with API testing using Postman, Swagger/OpenAPI, or similar tools.
• Experience creating, maintaining, or improving automated test suites.
• Solid understanding of QA methodologies, test design techniques, regression testing, exploratory testing, integration testing, and defect management.
• Experience working with relational databases and SQL to validate data integrity and application behaviour.
• Knowledge of cloud environments, ideally AWS, with a practical understanding of services such as DynamoDB, SQS/SNS, and Secrets Manager.
• Experience working with GitHub and CI/CD workflows, ideally GitHub Actions.
• AI literacy, including familiarity with AI-assisted tools, AI agents, or the practical use of AI to improve testing, automation, and documentation.
• Ability to understand complex technical environments, identify quality risks, and work collaboratively with developers and product teams.
• Experience working in Agile/Scrum environments.
• Professional level of English, both written and spoken.

Nice to have

• Experience working in healthcare, digital health, medical software, or other regulated environments.
• Previous experience with patient data, identity management, or clinical workflows.
• Knowledge of Spring Boot, Java, Maven, or Java backend ecosystems.
• Experience with Playwright.
• Experience replacing or modernising existing automation frameworks.
• Experience with contract testing, distributed systems, or end-to-end integration testing.
• Experience with Docker and containerised development or testing environments.

💜 Why You’ll Love Working at Nuvolar

• Flexible Work & Work-Life Balance: enjoy options to balance work and personal life, including every other Friday off.
• Remote Work: this is a fully remote position, giving you the flexibility to work from anywhere in Spain while staying closely connected with your team.
• Seniority Program: enjoy additional benefits and privileges as you grow with the company.
• Social & Team Budget: even though we primarily work remotely, we encourage team gatherings and activities, with a dedicated budget.
• Continuous Learning: access training, mentorship, and professional development opportunities.
• Growth Opportunities: participate in challenging healthcare technology projects, work with modern technologies, shape the QA strategy of a growing product team, and contribute to the evolution of quality engineering practices.

👥 The Hiring Process

1. Project & Role Introduction
A first conversation with one of our engineering team members to introduce the project, explain the role in detail, and answer your initial questions about the opportunity.

2. Technical Assessment
Youll complete a take-home QA challenge designed to evaluate your technical approach, testing strategy, and problem-solving skills.

3. Technical Interview
A discussion with our engineering team to review your assessment, explore your technical experience, and talk through real-world testing scenarios, technical decisions, and your way of working.

4. Cultural Fit Interview
A conversation with our Talent Acquisition team to learn more about your background, career goals, and what youre looking for in your next opportunity. Its also a chance for you to ask any remaining questions about Nuvolar, our culture, and the role.

5. Client Interview (if required)
Depending on the project, there may be a final conversation with the client to discuss the role, the team, and how youll collaborate within the project environment.

In our screening process, we prioritize verifiable signals of excellence, regardless of seniority. There are no preferential paths beyond what your application demonstrates, and we evaluate every candidate through the same process. Some people hold back because they feel they lack experience or have an “imperfect” CV. If you like the role and believe you could excel over time, don’t self-reject. All applications go through our careers page, which is the only way to be considered. If you pass our screening, you’ll be asked to complete one or more tests. 

🚀 Join a team where trust, growth, and purpose go hand in hand. Apply now and let’s build meaningful tech — together, from anywhere.

If you want to be aware of all of our latest updates, follow us via LinkedIn | Instagram | Glassdoor | Medium

Equal Opportunity Statement
Nuvolar Works is an equal-opportunity employer. We welcome and encourage applications from all backgrounds. We do not discriminate based on age, sex, gender, gender identity or expression, sexual orientation, family or marital status, disability, national origin, race, ethnicity, religion, or any other protected characteristic. Candidates with disabilities are encouraged to apply, and we are committed to providing an inclusive and accessible recruitment process. If you require any adjustments during the hiring process, please let us know.