Senior Functional Tester (m/f/d)

Are you ready to take quality to the next level? At Sofico, we develop Miles, our future-proof platform designed to support the full business lifecycle of automotive finance, leasing, fleet and mobility companies worldwide.

Miles is built with flexibility at its core — from private lease and company car leasing to subscription-based mobility solutions, all managed within one powerful platform.

As a Senior Functional Tester, you are not just validating features — you are safeguarding quality, driving improvements, and shaping the way we test. You play a key role in ensuring our software meets the highest standards while collaborating closely with analysts, developers, and fellow testers across teams.

As a Senior Functional Tester, you are responsible for ensuring the functionality, reliability, and overall quality of new and existing features within Miles.

You will:

• Design, document and execute functional test scenarios and test cases

• Analyze business and functional requirements and translate them into structured test approaches

• Detect, document and follow up on defects in close collaboration with development teams

• Contribute to test automation initiatives and help improve automation frameworks

• Support integration, regression, and performance testing activities

• Collaborate with business analysts, developers, and product teams to ensure high-quality releases

• Safeguard QA standards, best practices and contribute to continuous improvement

• Take ownership of testing initiatives within your domain

As you grow further in this role, you will:

• Lead testing efforts across projects or domains

• Define and improve quality standards and testing strategies

• Mentor junior testers and share best practices

• Strengthen automation and performance testing capabilities within the team

Quality is your passion. You don’t just test software — you understand how systems work, how users think, and where risks might hide.

You combine analytical strength with strong communication skills and enjoy working in a collaborative, Agile environment.

We’d love to see the following aspects as well:

• Several years (5+ preferred) of experience in functional testing within an enterprise software product environment

• Proven experience testing complex platforms (ERP systems experience is a strong plus)

• Strong knowledge of test design techniques and structured testing methodologies

• Experience with test automation tools and frameworks

• Familiarity with integration testing and performance/load testing

• Strong analytical and problem-solving skills

• Ability to collaborate closely with both business and technical stakeholders

• Leadership mindset with mentoring capabilities

• Experience working in an Agile setup

• Fluent in English, as we are an international and multicultural company

• Adaptable and comfortable in an evolving environment

• Detail-oriented without losing sight of the bigger picture

• Proactive and solution-driven

• A clear communicator who can explain risks and findings effectively

• Continuously eager to learn and improve

• A team player who also takes ownership

• A competitive salary paid 14 times a year

• Full medical insurance covered by Sofico

• €10,46 daily meal allowance for every day worked

• Flexibility with adjustable hours and work-from-home options

• A sleek, modern office with excellent accessibility and amenities

• Tailored six-month onboarding with your own job coach

• Exciting team events: think after-work drinks, BBQs, and more