Performance Test & API Automation Engineer

October 9, 2026

Remote

Senior

Île-de-France, France

Description

A Performance Test & API Automation Consultant is sought to strengthen software quality and application performance activities. The role works closely with the Test Lead and technical teams to improve the reliability, performance and robustness of critical application flows. The mission spans performance, load and scale testing as well as test automation with a backend focus, within a rich technical environment of multiple application services.

Responsibilities

Design and execute performance, load and scale-up tests
Define injection scenarios representative of the different platform usages
Implement and automate load campaigns with k6 and/or JMeter
Test end-to-end flows and services across the whole application chain
Analyze campaign results to identify bottlenecks, capacity limits and fragile points
Use monitoring and observability tools, notably Datadog
Set up and maintain dashboards to track performance indicators
Contribute to capacity planning to anticipate volume growth and load peaks
Design and develop automated test scenarios
Automate complex functional and transactional flows and interactions with the different services and APIs
Make automated tests reliable and industrialize them
Ensure maintainability, reusability and robustness of scripts
Contribute to improving the existing automation framework and practices

Requirements

Bac+5 level education (Master's degree)
Minimum 7 years of experience as a QA
Minimum 4 years of experience in performance testing and API automation
Mastery of k6
Good knowledge of JMeter and Datadog
Ability to build end-to-end (E2E) flows
Experience creating monitoring and performance dashboards
Knowledge of APIs and service-oriented architectures
Good interpersonal skills and ability to work with varied technical stakeholders

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