> Markdown version of [/jobs/ext/1937550-senior-performance-engineer-k6-ci-cd-docker-observability](https://www.wearedevelopers.com/jobs/ext/1937550-senior-performance-engineer-k6-ci-cd-docker-observability). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Performance Engineer (K6) - Ci/Cd, Docker & Observability - **Company:** Erni - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Automation of Tests, Continuous Integration, Strategies of Testing, TypeScript, Datadog, Performance Testing, Docker - **Published:** August 5, 2026 - **Apply:** https://www.buscojobs.com.es/senior-performance-engineer-k-6-ci-cd-docker-observability-en-madrid-ID-365488830 ## About the Role You will design and implement load tests using k6, and contribute to CI/CD pipelines, observability tooling, and testing automation. The role requires strong JavaScript/TypeScript skills, Docker, and English proficiency, with hybrid work in Barcelona, Spain. #J-*****-Ljbffr ## Description ERNI is seeking a performance testing expert to ensure the reliability of a large-scale laboratory platform through modern testing strategies and automation.You will design and implement load tests using k6, and contribute to CI/CD pipelines, observability tooling, and testing automation.The role requires strong JavaScript/TypeScript skills, Docker, and English proficiency, with hybrid work in Barcelona, Spain.#J-*****-Ljbffr ## Related Videos - [Continuous testing - run automated tests for every change!](https://www.wearedevelopers.com/videos/190-continuous-testing-run-automated-tests-for-every-change) - [Do TypeScript without TypeScript](https://www.wearedevelopers.com/videos/327-do-typescript-without-typescript) - [Debugging in the Dark](https://www.wearedevelopers.com/videos/1658-debugging-in-the-dark) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Software Engineering Social Connection: Yubo’s lean approach to scaling an 80M-user infrastructure](https://www.wearedevelopers.com/videos/1583-software-engineering-social-connection-yubo-s-lean-approach-to-scaling-an-80m-user-infrastructure) - [Frontend Performance Testing in practice](https://www.wearedevelopers.com/videos/8-frontend-performance-testing-in-practice) ## Related Articles - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front)