Senior Performance Engineer-2026-APG-416

Location: Heerlen, Netherlands 
Hours: 32–40 hours per week
Experience Required: Minimum 6 years
Work Environment: Agile / DevOps

Role Overview

Seeking an experienced Performance Engineer to improve the speed, stability, scalability, and efficiency of digital applications. This role combines hands-on performance testing with strategic analysis and advisory responsibilities, contributing to high-quality user experiences across complex systems.

Key Responsibilities

• Design, execute, and analyze performance tests (load, stress, endurance)
• Develop and maintain performance test scripts
• Interpret performance data and provide actionable insights
• Identify root causes of performance issues and recommend improvements
• Define and implement performance testing strategies and best practices
• Evaluate system architecture and design from a performance perspective
• Collaborate with cross-functional teams including developers, architects, and product owners
• Support continuous performance improvement across multiple teams and systems
• Lead knowledge sharing and act as a subject matter expert

Required Skills & Qualifications

• Bachelor's or Master's degree in IT or related field
• Minimum 6 years of experience in performance engineering or similar role
• Strong knowledge of performance testing and monitoring tools
• Experience with programming/scripting languages
• Proven ability to analyze and resolve performance issues in complex environments
• Familiarity with web and mobile application technologies
• Experience working in Agile and DevOps environments
• Strong analytical and problem-solving skills
• Excellent communication skills with the ability to explain technical concepts clearly
• Ability to work independently and collaboratively across teams
• Fluent in Dutch and English (written and spoken)

Key Competencies

• Strategic and analytical thinking
• Leadership and mentoring abilities
• Adaptability across multiple teams and projects
• Strong stakeholder management and advisory skills
• Continuous learning mindset