Performance Test Engineer - k6 & TS/JS (Hybrid)

ERNI; Madrid; Híbrido; EUR 55.000 - 75.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Certifications covered

Private health insurance

Sick leave covered

Wellbeing support

Gym discounts

Flexible remuneration

Referral bonuses

Vacation days

Language courses

Descripción de la vacante

ERNI seeks an experienced performance engineer to help ensure the reliability of a large-scale laboratory platform. You will design and run realistic performance scenarios using k6, JMeter or Gatling, and drive automation across the full platform stack.

We offer a hybrid work model in Madrid with regular mentoring and growth opportunities within a collaborative team. If you enjoy building scalable testing strategies and improving observability, ERNI welcomes your application.

Formación

• 4+ years of experience in performance and load testing using k6, JMeter or Gatling.
• Strong programming skills with JavaScript/TypeScript and experience with Python and/or Java.
• Experience building CI/CD pipelines with GitHub Actions and working with Git based pull request workflows.
• Hands on experience with Grafana, Prometheus, Loki, Tempo or equivalent observability platforms to analyze system behavior.
• Design realistic performance scenarios and testing strategies based on architecture and business flows.

Responsabilidades

• Design and execute performance tests and load scenarios for complex systems.
• Maintain containerized environments and internal libraries; automate executions via GitHub Actions.
• Analyze logs, metrics and traces to identify bottlenecks and regressions; optimize system performance.

Conocimientos

Performance testing

Load testing

k6

JavaScript/TypeScript

Python/Java

GitHub Actions

CI/CD pipelines

Observability tooling

Grafana

Prometheus

Loki

Tempo

Herramientas

Git

Docker

Descripción del empleo

ERNI seeks an experienced performance engineer to help ensure the reliability of a large-scale laboratory platform. You will design and run realistic performance scenarios using k6, JMeter or Gatling, and drive automation across the full platform stack.

We offer a hybrid work model in Madrid with regular mentoring and growth opportunities within a collaborative team. If you enjoy building scalable testing strategies and improving observability, ERNI welcomes your application.