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About the Role
We are seeking a Senior Software Development Engineer in Test (SDET) to build and enhance the infrastructure essential for reliable, scalable testing. This hands-on role focuses on test environments, CI/CD pipelines, containerized infrastructure, and test data management, aiming to improve environment provisioning, test data dependability, and automated feedback speed and actionability.
Responsibilities
- Design, build, and maintain reliable test infrastructure for automated integration and end-to-end testing.
- Develop repeatable approaches to provisioning, configuring, and tearing down test environments, including ephemeral environments.
- Work hands-on with Docker and Kubernetes to support containerized applications and their testing dependencies.
- Improve consistency across local, CI, and shared test environments.
- Partner with infrastructure and development teams to diagnose issues involving application configuration, service connectivity, container workloads, and environment readiness.
- Build practical tooling that helps engineers create, use, and troubleshoot test environments with less manual intervention.
- Own and improve approaches to creating, seeding, validating, refreshing, and cleaning up test data.
- Build repeatable data setup workflows that support reliable, isolated test execution.
- Work with SQL and MongoDB to investigate data issues and establish appropriate test datasets.
- Apply privacy-aware practices to test data, including sanitization or masking of sensitive information and the use of synthetic data.
- Address data dependencies and contamination between tests to reduce inconsistent results and improve reproducibility.
- Build, maintain, and troubleshoot automated testing workflows in CI/CD pipelines.
- Integrate environment provisioning, readiness checks, test data setup, test execution, and cleanup into delivery workflows.
- Implement meaningful quality gates that provide timely feedback without creating unnecessary delivery friction.
- Improve execution speed and reliability through appropriate parallelization, test isolation, resource management, and failure diagnostics.
- Make failures easier to investigate through useful logs, reports, and retained diagnostic artifacts.
- Distinguish application defects from test, data, pipeline, and environment failures, and address their underlying causes.
- Develop maintainable automation and supporting tools using Python and Pytest.
- Extend shared fixtures, reusable modules, and test utilities that help engineering teams write dependable tests.
- Support API, integration, and browser-based automation where needed, including Playwright.
- Collaborate with developers and other SDETs to introduce testability considerations early in design and implementation.
- Evaluate tools pragmatically, choosing solutions that meet the team’s needs without unnecessary complexity.
- Take ownership of improvements from problem definition and design through implementation, adoption, and ongoing maintenance.
- Help define the technical direction for test infrastructure and test data management.
- Document environment workflows, troubleshooting practices, and technical decisions.
- Mentor teammates through code reviews, pairing, and practical guidance on automation and infrastructure.
- Communicate trade-offs clearly and prioritize improvements that have a measurable impact on engineering productivity and confidence in releases.
Requirements
- Significant hands-on experience as an SDET, quality engineer, or software engineer working on test infrastructure and automation, with demonstrated senior-level ownership.
- Direct experience building and troubleshooting test environments and CI/CD pipelines.
- Practical experience with Docker and Kubernetes, including configuring workloads and investigating failures in containerized environments.
- Experience provisioning and maintaining non-production environments, managing application configuration, and supporting dependent services.
- Strong working knowledge of SQL, MongoDB, and test data management, including data setup, validation, isolation, and cleanup.
- Experience integrating automated testing into platforms such as GitHub Actions, CircleCI, or Jenkins, and familiarity with deployment workflows.
- The ability to debug problems across code, pipelines, infrastructure, configuration, and data.
- Sound engineering judgment: you build maintainable solutions, understand trade-offs, and avoid over-engineering.
- A collaborative, self-directed approach and the ability to turn ambiguous problems into practical improvements.
- Thoughtful use of AI-assisted development tools, with ownership of the code you submit and the ability to explain, validate, and refine generated output.
- Building ephemeral or on-demand test environments.
- Managing sensitive test data, including PII sanitization, masking, or synthetic data generation.
- Working in a startup or smaller engineering team where you owned infrastructure and tooling directly.
- Infrastructure-as-code and repeatable environment provisioning.
- API and integration testing, Playwright-based browser automation, or performance and load testing.
Skills
- Python
- Pytest
- C#
- SQL
- MongoDB
- Docker
- Kubernetes
- GitHub Actions
- CircleCI
- Jenkins
- Playwright
- AI-assisted development tools
Location
- Toronto
Work Type
- Full-time
Experience Level
- Senior
Salary/Compensations
- $80,000 to $130,000
Benefits
- Stock options
About the Company
- Air-tek is a Canadian-based software company offering a powerful suite of innovative products that have already captured a significant share of a massive global market.
- With strong product-market fit, demand is growing rapidly.
- Our diverse team is united by a passion for solving complex problems, a drive to innovate, and a commitment to reshaping the passenger-centric travel industry.
- Headquartered in Toronto, our inclusive culture is built on trust, collaboration, product excellence, and continuous personal growth.