C++ Test Engineer

As a Software Engineer focused on test framework development, you will evolve and extend an existing automated testing framework used across a latency‑sensitive C++ algorithmic trading platform. Your work will enable engineering teams to validate complex behaviour deterministically, improve developer feedback loops, and raise overall software quality.

• Type: Contract
• Day Rate: Competitive (inside IR35)
• Hybrid Working (3 days onsite in Waterloo)
• Contract Length: 1+ year

Responsibilities

• Design, implement, and enhance an automated testing framework for C++ services.
• Extend existing test infrastructure to support deterministic, reliable testing of complex logic.
• Build reusable test harnesses, fixtures, and utilities to isolate business logic from external dependencies.
• Integrate automated tests into CI/CD pipelines to provide fast, actionable feedback to developers.
• Support teams in turning defects, incidents, and requirements into stable regression tests.

Required Skills

• Strong C++ and Python software engineering experience in complex codebases.
• Proven experience building or extending automated test frameworks or developer tooling.
• Hands‑on experience with C++ unit testing frameworks (e.g. GoogleTest, GoogleMock, Catch2).
• Solid understanding of concurrency and asynchronous programming, and how to test such systems deterministically.
• Experience using mocking or dependency injection techniques.
• Familiarity with CI/CD pipelines and integrating automated testing into build workflows.

Preferred Skills

• Experience working on low‑latency, distributed, or high‑reliability systems.
• Exposure to deterministic replay, simulation environments, or performance testing.
• Familiarity with test orchestration frameworks such as Testplan (or equivalent).
• Understanding of observability concepts such as structured logging, tracing, and metrics.

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