IT Performance Specialist Job ID: JP054414

ITProposal • Brussels, Brussels • Posted June 26, 2026

About the Role

IT Performance Specialist

Location: Brussels (Hybrid)
Seniority: Senior / Expert

Mission

We are looking for an experienced IT Performance Specialist to support a major application modernization project and strengthen performance testing practices across the organization. The role combines hands-on performance testing, performance engineering, automation, and coaching of development and QA teams.

Key Responsibilities

Performance Testing

  • Define performance testing strategies based on non-functional requirements (NFRs).
  • Design, develop, and maintain performance test scripts using Apache JMeter and existing frameworks.
  • Execute load, stress, endurance, and scalability testing campaigns.
  • Monitor application and infrastructure performance metrics during test execution.
  • Analyze results, identify bottlenecks, and provide technical recommend...