SDET + C# + AWS

Improving; México; Remote; MXN 60,000 - 110,000; Full time

Job summary

Improving is seeking a QA Automation Engineer to design and implement automated test frameworks for C#/.NET services, APIs, and data processing on AWS.

You will build integration and end-to-end tests, verify data integrity, and optimize test coverage while aligning with CI/CD pipelines and backend system reliability. The role emphasizes scalability, performance testing, and debugging across application, database, and infrastructure boundaries.

Qualifications

• Strong software engineering and test automation background.
• C#/.NET development experience, ideally with backend services or test infrastructure.
• Hands-on experience creating test frameworks and supporting tools for backend systems.
• Experience testing APIs, background services, asynchronous systems, or distributed processing applications.
• Solid experience with integration, system, and performance testing.
• Experience validating relational database behavior and system resilience.
• Experience testing applications in AWS or comparable cloud environments.
• Strong debugging skills across application, database, and infrastructure boundaries.
• A focus on backend and system-level testing rather than front-end/UI automation.

Responsibilities

• Design automated test frameworks and harnesses for C#/.NET services, APIs, and processing components on a platform that handles large-scale data and file processing in AWS
• Build integration and end-to-end tests covering file ingestion, processing state, metadata, and completed results
• Develop load, stress, concurrency, scalability, and performance tests
• Validate database interactions, data integrity, state transitions, and transactional behavior
• Design failure tests for retries, timeouts, unavailable dependencies, interrupted processing, and recovery
• Verify that concurrent processing never loses, duplicates, stalls, or mishandles work
• Build mocks, simulators, test services, test data generators, and regression suites
• Analyze failures using logs, database state, metrics, diagnostics, and AWS operational data
• Integrate automated testing into CI/CD and improve testability and instrumentation

Skills

C#/.NET

Backend testing

Test automation

API testing

AWS

Docker

Tools

AWS

Docker

Job description

Improving is committed to building a great place to work by cultivating an environment that fosters professional and personal relationships. We value open communication, personal growth, and shared rewards, which result in sustainable success.

Voted "best place to work" numerous times, Improving strives to create and maintain a culture that exemplifies teamwork, excellence, and fun! We believe this kind of culture encourages both the inspiration and the motivation to achieve amazing things.

• Design automated test frameworks and harnesses for C#/.NET services, APIs, and processing components on a platform that handles large-scale data and file processing in AWS
• Build integration and end-to-end tests covering file ingestion, processing state, metadata, and completed results
• Develop load, stress, concurrency, scalability, and performance tests
• Validate database interactions, data integrity, state transitions, and transactional behavior
• Design failure tests for retries, timeouts, unavailable dependencies, interrupted processing, and recovery
• Verify that concurrent processing never loses, duplicates, stalls, or mishandles work
• Build mocks, simulators, test services, test data generators, and regression suites
• Analyze failures using logs, database state, metrics, diagnostics, and AWS operational data
• Integrate automated testing into CI/CD and improve testability and instrumentation

What You'll Bring

• Strong software engineering and test automation background
• C#/.NET development experience, ideally with backend services or test infrastructure
• Hands-on experience creating test frameworks and supporting tools for backend systems
• Experience testing APIs, background services, asynchronous systems, or distributed processing applications
• Solid experience with integration, system, and performance testing
• Experience validating relational database behavior and system resilience
• Experience testing applications in AWS or comparable cloud environments
• Strong debugging skills across application, database, and infrastructure boundaries
• A focus on backend and system-level testing rather than front-end/UI automation
• Nice to have: testing large-scale file ingestion or highly concurrent database-backed systems; AWS compute, storage, and monitoring; Docker and containerized applications; Autodesk, CAD, point-cloud, 3D model, or other engineering-data processing systems

Improving welcomes people from all backgrounds and walks of life, and this is reflected in our largely diverse community of Improvers. Improving is proud to be an equal opportunity employer and is committed to providing equal opportunities for all employees and applicants. Improving recruits, hires, trains, promotes, compensates, and administers all personnel actions without regard to race, color, religion, sex, sex stereotyping, pregnancy (which includes pregnancy, childbirth, and medical conditions related to pregnancy, childbirth, or breastfeeding), gender, gender identity, gender expression, national origin, age, mental or physical disability, ancestry, medical condition, marital status, military or veteran status, citizenship status, sexual orientation, genetic information, or any other status protected by applicable law.

About Improving

Improving is a modern digital services company dedicated to positively changing the perception of the IT professional. We offer innovative solutions through consulting, software development, and training to help thousands of our clients achieve new heights in a competitive and ever-changing market.

As our company continues to grow, we are looking for enthusiastic thought leaders to join our team. Improving has a unique mix of passionate professionals who strive to grow and thrive in new ways. We are committed to establishing and maintaining an inclusive culture that allows all Improvers to bring their authentic selves to work each day. This is why we work hard to build inclusion and diversity in our workplace, so we can all do amazing things and succeed together.