Senior API Quality Engineer - Cloud Testing

The Big Job Site; Aguascalientes; On-site; MXN 600,000 - 900,000; Full time

Job summary

Capgemini is seeking a Senior SDET / API Quality Engineer in Aguascalientes, Mexico to validate quality, reliability, and performance of cloud-native integration platforms and API-driven solutions. You will lead testing strategies for complex integrations, design automated API test frameworks in C#/.NET, and collaborate with global teams to ensure secure, scalable solutions.

The role emphasizes leadership in QA, test automation, and continuous improvement in agile environments, with exposure to

Qualifications

• Demonstrates strong expertise in API testing, C#/.NET automation, Postman, NUnit, and cloud-native architectures.
• 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.

Responsibilities

• 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.

Skills

API testing

C#/.NET automation

Postman

NUnit

Cloud environments

Tools

Azure

AWS

Job description

Capgemini is seeking a Senior SDET / API Quality Engineer in Aguascalientes, Mexico to validate quality, reliability, and performance of cloud-native integration platforms and API-driven solutions. You will lead testing strategies for complex integrations, design automated API test frameworks in C#/.NET, and collaborate with global teams to ensure secure, scalable solutions.

The role emphasizes leadership in QA, test automation, and continuous improvement in agile environments, with exposure to