API Test Infrastructure Engineer

ZERORISK

API Test Infrastructure Engineer building and maintaining automated API testing infrastructure for engineering teams. Responsible for design, tooling, and continuous validation of API tests.

Posted 4/23/2026full-timeRemote • 🇮🇪 IrelandMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

DockerGraphQLJenkinsPython

About the role

Key responsibilities & impact

Design, build, and maintain a robust, automated API testing infrastructure that can be spun up reproducible across local, CI, and production-mirror environments.
Develop and maintain a shared library of reusable test utilities, fixtures, helpers, and patterns for use across engineering teams.
Own the containerization strategy for test environments using Docker (and related tooling), ensuring tests run consistently and reliably regardless of where they execute.
Integrate the testing infrastructure into existing CI/CD pipelines, including test reporting, alerting, and failure triage workflows.
Continuously evaluate and introduce new tools, frameworks, and practices that improve the reliability, speed, or coverage of the infrastructure.
Build and maintain a suite of automated integration tests that validate the behavior of third-party and external API-based tools the organisation depends on.
Design monitoring and alerting strategies that detect regressions or unexpected changes in external API behavior as early as possible.
Collaborate with internal teams to understand integration requirements and translate them into automated, continuously-running test scenarios.

Requirements

What you’ll need

Python scripting: strong scripting ability with experience writing clean, maintainable, production-quality Python code used in test tooling and automation frameworks.
API standards: solid understanding of REST, GraphQL, and related API conventions including request/response life-cycles, pagination, error handling, and versioning.
API security: practical knowledge of API-level security concepts including authentication (OAuth 2.0, API keys, JWT), authorization patterns, and how to validate security controls through tests.
Automated testing: experience designing, building, and maintaining automated test suites; familiarity with frameworks such as pytest, and an understanding of test architecture (unit, integration, contract, end-to-end).
Containerization: hands-on experience with Docker to create reliable, reproducible test environments; experience with Docker Compose or similar tooling for orchestrating multi-service test setups.
CI/CD integration: experience integrating automated tests into CI/CD pipelines (e.g. GitHub Actions, GitLab CI, Jenkins) including test reporting and gating strategies.

Benefits

Comp & perks

A high-impact role with clear ownership of a critical engineering platform.
Close collaboration with engineering teams across the organisation.
The opportunity to shape how quality and testing are practiced at scale.
A culture that values engineering craft, automation, and continuous improvement.

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Hard Skills & Tools

PythonAPI testingautomated testingDockerpytestCI/CDRESTGraphQLAPI securitytest architecture

Soft Skills

collaborationproblem-solvingcommunication