Senior Performance Engineer (on-site)

Location: Hybrid position based in Luxembourg (50% non-negotiable on-site presence required).

Eligibility: Only citizens of the European Union will be considered for this position. Not eligible for blue-card holders.

Company Overview

Infatuated is a web, consulting, and software development company. We are a passionate group of problem solvers who thrive on turning complex ideas into elegant digital solutions. With years of experience and a commitment to staying at the forefront of technology, we are your trusted partner in web and software development.

Role Description

We are looking for experienced a Senior Performance Engineer to drive end-to-end performance improvements across a complex, enterprise environment for a European Institution in Luxembourg. This is a full-time role with a requirement to be on-site 50% of the time.

Key Responsibilities

• Establish/document performance baselines; uncover and remediate bottlenecks across client→backend paths; run load testing; contribute to capacity planning.
• Build a standard tooling approach for measurement, monitoring, and reporting; produce clear technical docs and partner with infra/app/database/network stakeholders.

Environment (you’ll touch)

• Network & Edge: Cisco network devices, Fortinet firewalls, F5 load balancers.
• Systems: RHEL (core), Windows Server.
• Apps (IBM & Web): IBM FileNet, BAW (Business Automation Workflow), Case Manager, WebSphere, Apache.
• Infra: Network, storage, Nutanix.

Tooling & Methods

• System: iostat, vmstat, htop.
• DB (Oracle): OEM, AWR, tkprof, SQL trace.
• App/Load: JMeter, web application monitoring.
• Monitoring (advantage): Nagios (incl. webinject live checks).
  

Qualifications

• 8+ years in systems/application performance engineering with strong Linux performance tuning & scripting; proven work across complex enterprise stacks listed above.
• Clear communicator; structured documentation; collaborates with Business/DDS/DBA/NETWORK/INFRA/SaaS teams; excellent English.

Benefits

• Competitive salary with performance-based incentives.
• Opportunities for professional growth and certification support.
• Work on meaningful, high-impact digital infrastructure initiatives.
• Join a diverse and collaborative work environment in Luxembourg.

Keywords: Systems Performance, RHEL, Windows Server, Cisco, Fortinet, F5, IBM FileNet/BAW/Case Manager/WebSphere, Apache, Nutanix, JMeter, OEM, AWR, tkprof, SQL trace, Nagios, webinject.