.NET / API Quality Engineer
Confirmed on the employer's own hiring board on Oct 4, 2026. First seen by Alion on Oct 2, 2026. Capgemini scores B on the Alion truth index.
Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world.
Your Role
As a Senior SDET / API Quality Engineer, you will be responsible for validating the quality, reliability, and performance of cloud-native integration platforms and API-driven solutions. This role is suited for experienced quality engineering professionals with strong expertise in API testing, C#/.NET automation, NUnit, Postman, and cloud environments, who can independently drive testing strategies across complex integrations and business-critical systems.You will work closely with engineering, product, and platform teams to ensure seamless integration between internal and external systems, validate complex business logic, and contribute to a culture of quality, automation, and continuous improvement. As a senior team member, you will bring technical leadership, strong analytical capabilities, and a proactive approach to solving challenges in highly collaborative, agile environments.
Responsibilities & Scope
- Lead quality engineering efforts for API-first and cloud-native platforms, ensuring reliability, scalability, and seamless customer experiences.
- Design, develop, and maintain automated API test frameworks using C# (.NET) and NUnit, enabling efficient and data-driven testing practices.
- Validate complex REST API integrations, microservices, authentication mechanisms, and business workflows across distributed systems.
- Collaborate with global engineering teams to support integration and transformation platforms connecting internal and external partner ecosystems.
- Contribute to the delivery of secure, resilient, and high-performing solutions through comprehensive functional, integration, and end-to-end testing strategies.
- Participate in production monitoring and on-call support, helping maintain service stability and quickly resolve critical issues when needed.
- Drive continuous improvement initiatives by identifying risks, increasing automation coverage, and enhancing testing effectiveness.
- Work with modern cloud technologies, integration architectures, and digital platforms that support large-scale business operations.
- Partner with developers, architects, and stakeholders to champion a quality-first mindset throughout the software development lifecycle.
- Expand your expertise through exposure to innovative technologies, global collaboration, and continuous learning opportunities.
Your Profile
- Demonstrates strong expertise in API testing,C#/.NET automation, Postman, NUnit, and cloud-native architectures, delivering quality solutions with confidence and precision.
- Brings a customer-focused and problem-solving mindset, translating complex business requirements into effective testing strategies and measurable quality outcomes.
- Collaborates seamlessly across multidisciplinary and global teams, fostering trust, knowledge sharing, and collective success.
- Shows strong ownership, adaptability, and accountability, proactively addressing risks, supporting production environments, and driving continuous improvement.
- Applies analytical thinking and a passion for innovation to validate complex integrations, business logic, security requirements, and end-to-end system behaviors.
Job Description
As Test Automation Engineer, you are involved in the automated verification and validation of products made by engineers in a development process. Your technical and professional knowledge of Test Automation, programming, test environments and methodologies is solid. With your knowledge and experience with one or more test tools and test techniques, you can independently design and execute test automation solutions. You follow the latest developments in your field and you know what is going on.
Job Description - Grade Specific
As a Senior QA Automation Engineer, you are required to have experience working on different automation tools such as UFT and Selenium. In addition to developing and executing automation scripts, you are also expected to resolve technical issues wrt automation, provide input to improve effectiveness. You are also expected to mentor junior engineers.
What you’ll love
- Join global employee networks that promote engagement, development, and belonging.
- Access continuous learning through internal academies, certifications, and mentorship.
- Well-being hub and different wellbeing initiatives
Need to know
- Flexible Schedules: We support flexible working hours to accommodate different lifestyles, time zones, and family responsibilities.
- Career Development in Spanish & English: Training, certifications, and mentorship programs available in both languages to support bilingual growth.
About Capgemini
Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations.At Capgemini Mexico, we aim to attract the best talent and are committed tocreating a diverse and inclusive work environment, so there is nodiscrimination based on race, sex, sexual orientation, gender identity orexpression, or any other characteristic of a person. All applications welcomeand will be considered based on merit against the job and/or experience for the position.