SDET (Cards)

Job description

Our client is seeking a senior Software Development Engineer in Test (SDET) focused on Cards to design, implement, and maintain test automation that ensures robust, scalable delivery of card-related systems. You will work closely with cross-functional engineering teams to embed automated functional, integration, and performance testing into the development lifecycle and CI/CD pipelines. The role emphasizes hands-on coding in C# /. NET, building test frameworks for UI and APIs, supporting REST API migrations from legacy SOAP/WCF services, and validating system resilience through load and performance testing.

Responsibilities

- Create test case scenarios for improving test coverage using C# and. NET.

- Design, build, and maintain automation frameworks for UI, API, integration, and performance/load testing.

- Develop and execute automated test suites to validate functional and non-functional requirements.

- Develop comprehensive test strategies for REST API migrations from legacy SOAP/WCF services.

- Perform end-to-end testing of API workflows, including authentication and authorization flows.

- Validate OpenAPI/Swagger specifications against actual API implementations.

- Test adapter layer functionality between REST APIs and legacy SOAP/WCF services, ensuring backward compatibility during migration phases.

- Validate file-based interface translations and data integrity across systems.

- Perform regression testing on existing SCM and card-related functionalities throughout migration phases.

- Conduct integration testing with internal and external systems, including Presidio IVR systems.

- Validate OAuth 2.0 and MFA implementations across services.

- Integrate test automation into CI/CD pipelines using Azure DevOps, GitHub Actions, GitLab CI, or similar tools.

- Design and run load and performance tests to validate system resilience and scalability using tools such as JMeter or Gatling or LoadRunner.

- Create and maintain tools for test data generation, mocking, dependency control, and system observability.

- Collaborate with software development teams to promote testability, shift-left practices, TDD, and clean code architecture.

- Participate in code reviews for application and test code, providing actionable feedback on coverage and quality.

- Mentor engineers and QA team members in automation practices and support a culture of test-driven development.

- Instrument tests and systems for observability and monitoring to support debugging and performance analysis.

- Maintain and evolve automation to work reliably in containerized and cloud environments (Docker, Kubernetes, Azure/AWS/GCP).

Requirements

- 4+ years of experience in software test automation, SDET, or development roles.

- Strong programming skills in C# /. NET or a similar object-oriented language.

- Create and implement test case scenarios using C# and. NET to improve test coverage across application and integration flows.

- Hands-on experience building automation frameworks for UI testing using Cypress, Selenium or Playwright.

- Hands-on experience building API automation using tools such as Postman, REST Assured, SoapUI, or similar.

- Strong understanding of REST, SOAP, and WCF protocols and experience testing integrations between modern and legacy services.

- Experience testing OAuth 2.0 authentication flows and familiarity with MFA implementations.

- Knowledge of OpenAPI/Swagger specifications and experience with API documentation, contract validation, and validating specifications against actual API implementations.

- Experience with unit testing frameworks such as NUnit, MSTest, or xUnit.

- Hands-on experience building load and performance tests using JMeter or Gatling or LoadRunner.

- Experience integrating automation into CI/CD pipelines using Azure DevOps, GitLab CI, GitHub Actions, or similar..

- Experience working in Agile or Scrum development environments.

- Familiarity with containerized environments using Docker and Kubernetes and cloud platforms such as Microsoft Azure, AWS, or GCP.

- Experience participating in code reviews and providing feedback on test coverage and quality.

Nice to Have

- Background in cards, payments, fintech, health tech, or other regulated industries.

- Strong debugging skills in distributed system environments.

- Experience testing adapter layers, file-based interfaces, and backward compatibility across legacy and modern systems.

- Experience with IVR integrations, particularly Presidio IVR systems.

- Experience with observability and monitoring tools such as Application Insights, Datadog, or Splunk.

- Experience mentoring developers and QA engineers in automation practices

Engagement & Logistics

- Engagement Length:12 months or more.

- Time Zone: CST (9:00 to 5:00PM)

- Overtime Required: There may be some need for some over time hours depending on the amount of work, but it would be 1-2 hours for a couple of days at a time. The rate for those hours will be the same.

- Equipment: BYOD (Bring Your Own Device)

Selection process

- Meeting with Resilient Co. team.

- Technical interview

- Cultural FIT/ Prep call with CSM

- Project interview

- Client interview (Hiring Manager call)