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Joppy Linkedin · Posted yesterday

Performance Engineer

Spain

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Indexed description

One of the companies we partner with at Joppy is looking to hire a Performance Engineer passionate about driving the performance of web applications through systematic testing, optimization, and a collaborative approach.


🎯 Responsibilities

  • Conduct regular performance, load, and stress tests on web applications to ensure compliance with defined SLAs.
  • Analyze frontend performance using modern tools such as Lighthouse, WebPageTest, Dynatrace, and browser developer tools.
  • Identify performance bottlenecks across frontend, APIs, and infrastructure; recommend and implement improvements.
  • Collaborate with developers, testers, architects, and business stakeholders to integrate performance testing into CI/CD pipelines.
  • Document test strategies, scenarios, and results with clear, tailored reporting for both technical and non-technical audiences.
  • Champion a performance-first culture by coaching teams and embedding performance testing early in development lifecycles.
  • Monitor production environments using real-user monitoring (RUM) and synthetic testing solutions.
  • Proactively identify risks and potential degradations in application performance.
  • Support troubleshooting of performance-related incidents across multiple system layers.


🛠️ Requirements

  • Bachelor’s degree in Computer Science, Information Technology, or a related field.
  • 2–4 years of experience in performance testing, ideally in banking or financial services.
  • Strong knowledge of performance testing tools (e.g., JMeter, Gatling, LoadRunner, k6).
  • Experience with frontend monitoring frameworks and developer tools.
  • Proficiency in scripting and test automation (JavaScript, Python, or similar languages).
  • Familiarity with CI/CD environments such as Jenkins, GitLab CI, or Azure DevOps.
  • Solid understanding of web technologies (HTML, CSS, JavaScript, React/Angular).
  • Knowledge of performance optimization techniques including lazy loading, caching, CDN, and minification.
  • Understanding of backend/API dependencies and their impact on frontend performance.
  • Familiarity with cloud and containerized environments (Docker, Kubernetes).
  • Excellent communication and reporting skills, with the ability to engage confidently with technical and business stakeholders.
  • Strong problem-solving skills, able to work both independently and collaboratively in an international context.


➕ Nice to have

  • Experience in the banking sector or secure, regulated environments.
  • Exposure to synthetic monitoring and observability solutions (e.g., New Relic, AppDynamics, Elastic APM).
  • Knowledge of accessibility, security, and compliance standards for frontend applications.


About Joppy

Joppy es una plataforma de reclutamiento tecnológico construida para developers por developers.

✅ No se requiere CV. Solo di lo que sabes y lo que quieres.

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