Performance Engineer - Hybrid

LGT Digital Factory; Madrid; Presencial; EUR 40.000 - 55.000; Jornada completa

Descripción de la vacante

A leading digital technology firm in Madrid is seeking a Performance Engineer to enhance operational efficiency through performance testing and optimization. The role requires a Bachelor's degree and 2–4 years of experience in performance testing, ideally from the banking sector. Key responsibilities include conducting tests, analyzing performance issues, and collaborating with development teams. This position offers an opportunity to work with modern tools and a motivated team in a dynamic environment.

Servicios

State-of-the-art development tools

Flexible working environment

Collaborative team culture

Formación

• 2–4 years of experience in performance testing, ideally in the banking sector.
• Proficient in scripting and test automation using JavaScript or Python.
• Strong knowledge of performance testing tools and frameworks.

Responsabilidades

• Regularly conduct performance, load, and stress tests on web applications.
• Analyze frontend performance and identify bottlenecks for improvement.
• Collaborate with developers and stakeholders to integrate performance testing.

Conocimientos

Performance Testing

Load Testing

Front-end Monitoring

Strong Analytical Skills

Educación

Bachelor’s degree in Computer Science or Information Technology

Herramientas

Jenkins

GitLab CI

Azure DevOps

New Relic

Docker

Kubernetes

Descripción del empleo

At LGT Digital Factory we are searching for Performance Engineer for our Barcelona Office.

LGT is committed to developing and operating modern and cloud native applications with the primary goal of enhancing operational efficiency and creating great client experience.

LGT Digital Factory (DiF) acts as a strategic nearshore partner to implement state-of-the‑art client and employee IT front ends. To fulfill this mission, we interact closely with LGT business and IT units and third‑party vendors.

You can expect state‑of‑the‑art development tools and best‑in‑class DevOps processes.

Together with a young, highly motivated team you will build and run the DiF WindTunnel for performance engineering.

Are you excited about joining our engineering team that helps the bank to systematically test existing and new solutions (we call it our Performance Engineering WindTunnel)? Are you motivated to take ownership and contribute to building high‑performing frontend solutions in a banking environment?

We are looking for a Performance Engineer with focus on performance testing and optimization who combines technical expertise with strong analytical skills and a passion for problem‑solving. Performance Testing & Optimization

Regularly conduct performance, load, and stress tests on web applications to ensure compliance with defined SLAs.

Analyze frontend performance using modern tools (e.g., Identify performance bottlenecks across frontend, APIs, and infrastructure, and recommend improvements.

Collaboration & Quality Assurance

Work closely with developers, testers, architects, and business stakeholders to integrate performance testing into CI / CD pipelines.

Document test strategies, scenarios, and results with clear reporting tailored to both technical and non‑technical stakeholders.

Contribute to building a performance‑first culture by coaching teams and embedding testing early in the development lifecycle.

Monitoring & Incident Management

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.

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.

Performance Engineering Expertise

Strong knowledge of performance testing tools (e.g., Experience with frontend monitoring frameworks and developer tools.

Proficiency in scripting and test automation (JavaScript, Python, or similar).

Familiarity with CI / CD environments (Jenkins, GitLab CI, Azure DevOps).

Solid understanding of frontend‑oriented development, including

Web technologies (HTML, CSS, JavaScript, React / Angular).

Performance optimization techniques (lazy loading, caching, CDN, minification).

Backend / API dependencies and their impact on frontend performance.

Cloud and containerized environments (Docker, Kubernetes).

Experience in the banking sector or with secure, regulated environments.

Exposure to synthetic monitoring and observability solutions (New Relic, AppDynamics, Elastic APM).

Knowledge of accessibility, security, and compliance standards in frontend applications.

About LGT Digital Factory

LGT Digital Factory was initiated as a project in 2022 to drive the digital transformation of LGT Private Bank by designing and managing innovative digital tools and seamless user experiences. Our mission is to simplify and enhance how clients interact with the bank in their day‑to‑day activities.

As a wholly owned subsidiary of LGT Private Bank Group, LGT Digital Factory (Spain) S.L. operates exclusively for the group’s companies. LGT Private Bank, headquartered in Liechtenstein, is the largest privately‑owned international private banking institution, specializing in wealth management services for high‑net‑worth individuals, families, and institutional clients. Together, we form part of the LGT Group, a global leader in financial services.

If you're looking to contribute to meaningful digital innovation within a respected and globally connected organization, LGT Digital Factory offers a unique opportunity to make an impact.