C# Developer in Test

Company: Trayport
Apply for the C# Developer in Test
Location: London
Job Description:

Overview

In this role, you will drive quality by building automated tests and advanced testing strategies, collaborating with cross-functional teams to ensure best user experiences. You will leverage AI-assisted tools to accelerate test script creation and integrate robust CI/CD practices. You’ll mentor peers, perform deep root-cause analysis, and contribute to architecture discussions to improve software quality at scale. This is a collaborative, growth-focused opportunity in a team that values innovation and knowledge sharing.

Responsibilities

  • Automate test cases using common coding standards; minimize manual testing
  • Create fast, reliable automated tests and investigate failures
  • Leverage AI tools (e.g., GitHub Copilot, ChatGPT) to accelerate test script generation
  • Improve or create CI/CD pipelines
  • Mentor other QEs on automation best practices
  • Perform root-cause analysis by inspecting source code when needed
  • Participate in software architecture discussions and contribute to user stories and acceptance criteria
  • Share product knowledge across the engineering team through knowledge sessions

Key requirements

  • 3+ years hands-on experience with C#, including unit and integration tests and mocking frameworks
  • 2+ years focused experience in API testing; automation framework development and maintenance
  • Experience with Docker and building/optimizing CI/CD pipelines
  • Familiarity with AI tools in development/testing lifecycle
  • Strong understanding of testing concepts, web technologies, RESTful APIs
  • Inquisitive and analytical mindset
  • Willingness to lead technical discussions
  • Rapid learner and adaptable to fast-moving issues
  • C# (unit & integration testing, mocking)
  • API testing
  • Automation framework development and scaling

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Posted: September 14th, 2026