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Coderio | Software Company • Punta Del Este, Misiones, Argentina
Role & seniority
Stack / tools
C#/.NET (4.8 to 8), Selenium or Playwright (Page Object Model), API/REST automation, Azure DevOps (CI/CD, test gates), SQL
Optional: Docker, Load testing tools (k6, JMeter), Hangfire
Top 3 responsibilities
Design, maintain, and scale C#-based automation frameworks (UI, API, backend) with clean architecture and SOLID
Build/maintain API tests for legacy and modern services; validate business logic independent of UI
Own Quality Gate in Azure DevOps; integrate tests into CI/CD, configure pipelines for smoke and full regression, manage test results
Must-have skills
5+ years C# development with automation focus; maintainable automation code
Hands-on Selenium or Playwright for .NET; Page Object Model
API automation experience; REST, HTTP, auth, JSON
Azure DevOps pipelines integration (test execution, reporting, quality gates)
Solid SQL skills for test data & backend validation
Nice-to-haves
Load testing (k6 or JMeter)
Hangfire knowledge (programmatic job status)
Docker/containerization for test environments
Location & work type
Reside in Uruguay or Argentina
100% remote, remote-first company; autonomous, international collaboration
About Coderio
Coderio designs and delivers scalable digital solutions for global companies. With a strong technical foundation and a product-oriented mindset, our teams lead complex software projects from architecture to execution. We value autonomy, clear communication, and technical excellence. We work closely with international teams and partners, building technology that creates real impact.
🌍 More information: http://coderio.com
We are seeking a C#-centric Automation Engineer to play a key role in the modernization of mission-critical systems, supporting the migration from .NET Framework 4.8 to .NET 8 and from AngularJS to Angular 20. The role is focused on reducing regression risk by designing and owning a robust, scalable test automation framework across UI, APIs, and backend processes, with full responsibility for test quality and CI/CD integration in Azure DevOps.
It is required to reside in Uruguay or Argentina.
What You Can Expect (Responsibilities)
Design, maintain, and scale C#-based automation frameworks using Selenium or Playwright, applying clean architecture and SOLID principles. Build and maintain API automation tests for legacy (.NET 4.8) and modern (.NET 8) services, validating business logic independently from the UI. Own and manage the Quality Gate in Azure DevOps, integrating automated tests into CI/CD pipelines. Configure and optimize pipelines to run smoke tests on PRs and full regression suites on nightly builds, ensuring reliability and fast feedback. Validate backend and background processes through database queries and log analysis. Actively detect, debug, and eliminate flaky tests, ensuring stable and trustworthy pipelines. Handle complex asynchronous and dynamic behaviors using robust synchronization strategies.
Requirements
5+ years of strong C# development experience, with a developer-first mindset and ability to build complex, maintainable automation code. Deep hands-on experience with test automation frameworks using Selenium or Playwright for .NET, including solid use of the Page Object Model. Proven API automation experience, with strong understanding of REST principles, HTTP protocols, authentication, and JSON handling. Experience integrating automated tests into Azure DevOps pipelines, including test execution, result publishing, and quality gates. Solid SQL skills to prepare test data and validate backend transactions through database queries. Reside in Uruguay or Argentina.
Nice to Have
Load Testing using k6 or JMeter. Hangfire knowledge, including programmatic job status validation. Docker / Containerization experience for spinning up test environments.
Benefits
100% remote Long-term commitment with autonomy and impact Strategic, high-visibility role within a modern engineering culture Collaborative international team and strong technical leadership Career development and growth opportunities within Coderio
Why Join Coderio?
At Coderio, we value talent regardless of location. We are a remote-first company, passionate about technology, collaboration, and fair compensation. We provide an inclusive and challenging environment with real opportunities for growth. If building impactful solutions motivates you, we’re waiting for you. Apply now. \n
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