Are you ready to ensure the performance of a large‑scale laboratory platform through modern testing strategies and automation? Join our expert team to work on a laboratory platform ecosystem, contributing to the development of scalable performance testing capabilities for complex systems. You will apply your knowledge of k6, JavaScript/TypeScript, Docker, GitHub Actions and observability tools to validate production‑scale workloads while improving testing automation and reliability.

At ERNI, you are never just a number. Even if you work on an external project, you will feel part of the team and always supported.

How do we make this happen?

We provide supportive mentorship through a manager, a godparent to help with practical and administrative aspects during your first six months, and a mentor who will guide your onboarding and career progression. Regular one‑on‑ones and a development plan help you set short‑, medium‑ and long‑term goals.

What You Will Bring

- 5+ years of experience in performance and load testing using k6, JMeter, Gatling or similar tools.
- Strong programming skills with JavaScript/TypeScript and experience with Python, Java, SQL, Docker and TestContainers.
- 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.
- Ability to define testing strategies, mentor other engineers and work autonomously in complex environments.
- Professional working proficiency in English required.

You will be responsible for designing and implementing realistic performance testing scenarios while building reusable tooling and containerized testing environments.



You will automate execution through CI/CD pipelines, analyze metrics and bottlenecks using observability platforms, contribute to testing strategy, mentor another engineer and continuously improve the performance testing ecosystem.

What if the project ends?

We work on a wide variety of projects, technologies and sectors, allowing you to keep growing in different environments. If a project ends or you feel ready for a new challenge, we will find another opportunity that aligns with your professional development.

Our working model

We ask you to be available for key meetings but trust you to deliver quality work within a 40‑hour workweek. The model is hybrid: we usually go to the office two days a week, depending on the project and team, while valuing flexibility elsewhere.

You Will Also Enjoy

- We cover your certifications and reward technical achievements up to €1,500.
- Private health insurance.
- Full coverage for sick leave.
- Free emotional, legal and family support.
- Gym discounts or sports compensation.
- Versátil remuneration for meals, transport, childcare and other categories.
- Referral bonuses: up to €6,000 per candidate and €5,000 per client.
- 23 working days of vacation.
- Free language courses: English, Spanish, Catalan and German.

And the salary?

We will discuss it during the first call. If it is important to you, feel free to ask.

Would you like to become an ERNIan? Apply now!

ERNI is a Swiss software engineering company leader in building complex, customised software solutions. We create digital solutions that connect the physical world (devices & connectivity) with the digital one. Our teams prioritize a clean and secure software lifecycle, and we focus on high‑impact solutions across multiple industries including health‑tech, smart devices, gaming and more.

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📌 Senior performance testing engineer – k6 - pharma industry (Cataluña)
🏢 Erni
📍 Cataluña