Senior Software Engineer in Test (Python)
Jobs at Align Technology | Align Technology Careers
·Feb 24, 2026
- Location
- EMEA-Spain
- Type
- Full-time
- Department
- Engineering
- Seniority
- Senior
- Experience
- 8+ years
- Education
- Master
- Visa
- Not sponsored
Description
Senior Software Engineer in Test (Python)
Department: Research & Development
Employment Type: Full Time
Location: EMEA-Spain
Description
Align Technology Inc. is a global leader in the development of innovative medical technologies. The company is best known for its groundbreaking product, Invisalign—a device that enables people to achieve a perfect smile in a simple and aesthetic way, without traditional braces.
Today, we are developing cutting-edge, technology-rich products such as the Invisalign system for teeth alignment and iTero scanners, helping dental professionals achieve optimal clinical outcomes and offer their patients advanced, effective treatment options.
Our headquarters is located in Silicon Valley, USA. Since 2004, our Madrid R&D office has been focused on developing CAD applications for orthodontics. Working closely with colleagues in the United States (San Jose and Raleigh) and Costa Rica, our team is responsible for integration of next-generation AI-powered software for digital medical devices.
We are expanding our QA department and looking for Senior Software Engineer in Test. This role involves testing complex 3D CAD applications, APIs, AI-powered tools and user interfaces, as well as their integration with other systems.
Why You'll Love Working With Us:
We are expanding our QA department and looking for Senior Software Engineer in Test. This role involves testing complex 3D CAD applications, APIs, AI-powered tools and user interfaces, as well as their integration with other systems.
Why You'll Love Working With Us:
- Cross-Functional Collaboration: Be part of a dynamic, multiregional development organization that utilizes a broad set of technologies and tools. You'll have the opportunity to interact and share experiences with colleagues from various countries and cultures.
- Diverse Testing Responsibilities: Our SQA team is responsible for testing multiple back-end applications, with a primary focus on a system which automatically implements text-based Doctors’ requests in digital treatment plan. You'll engage in both automated and manual testing, develop test design, dataset management and support automation framework activities.
- Flexible Methodologies: We use a mix of Waterfall for long-term planning and Scrum for short-term projects. Our automation frameworks, primarily Python-based (using pytest), run on both cloud (AWS) and on-premise infrastructure.
Key Responsibilities
Responsibilities
- Design, execute test plans for our software and related APIs, conduct test cases review.
- Develop and maintain automated tests using out Python-based automation frameworks.
- Validate AI-driven features and algorithms integrated into the application.
- Prepare, manage, and curate datasets for AI model training and testing.
- Analyze test results and work closely with developers to resolve issues.
- Estimate testing scope, plan & monitor testing for projects
- Prepare test documentation (test strategy, test plans, RTM)
- Work with bugs throughout their lifecycle
- Set-up CI for feature branches
- Support and optimize test regression
- Clarify use-cases with internal users
- Lead testing of team features through path-to-production flow
- Collaborate with cross-functional teams to ensure seamless integration of AI components.
- Contribute to continuous improvement of QA processes and tools.
Skills, Knowledge & Expertise
Requirements
- Bachelor or a master’s degree in computer science or related
- 8 years of professional SQA experience
- 2+ years hands on experience in test automation
- At least a year of experience as SQA in ML/AI area
- Excellent analytical skills and ability to write detailed test cases
- Desire to release product with good quality and ability to find defects
- Strong Python skills
- Experience in non-functional testing
- User experience with Git
- English: Upper intermediate.
Nice to have
- Familiar with generative AI technics
- Familiar with C++
- SQL querying skills
- Experience with AWS
Skills
PythonAWSSQLGitScrum
