Performance Tester (freelance)

Performance Tester (freelance)

Performance Testing | Apache JMeter | UI & API | Web & Mobile | Load/Stress/Endurance | Java Scripting | CI/CDOne of our clients is looking for a freelance Performance Tester with strong UI automation and API testing skills. The role is based in Mechelen.
They are seeking a highly experienced performance testing specialist who can design, script, execute and analyse performance tests across web, mobile and API-based applications. The ideal consultant combines strong technical expertise with a proactive mindset and excellent communication skills.Practical details:Start date: February 2026 (asap)
Duration: Outcome 2026 with possible extension (3 months confirmed)
Regime: Fulltime
Location: Mechelen
Office days: Monday & Thursday

Key Responsibilities

Script end‑to‑end UI user flows for web and mobile applications using Apache JMeter.

Design, develop and execute comprehensive performanc...