Role & seniority: Senior Performance Tester (two roles) within Testing Centre of Excellence (TCoE); senior-scale resource supporting multiple strategic projects.

Stack/tools: Performance testing and non-functional testing; LoadRunner ( hands-on 5+ years ); non-functional test scripts; test plans; tool evaluation and setup; collaboration with Technical Architecture, Infrastructure, and Tools teams.

Top 3 responsibilities

Define approach for non-functional testing; design, develop, and maintain load/stress/performance tests; create detailed Performance Test Plans.
Execute tests, analyze results, log defects, and manage retesting to closure; maintain non-functional test script repository; plan and report on performance activities.
Evaluate and configure performance testing tools; support performance engineering activities; assist in walkthroughs/inspections of procedures.

Must-have skills

ISTQB Foundation certification
5+ years’ experience as a Performance Tester
5+ years’ hands-on LoadRunner experience
BTech in Information Technology (or equivalent)
Strong non-functional testing experience in complex environments
Ability to work across multiple projects; strong analytical, documentation, and stakeholder skills

Nice-to-haves

Experience with broader performance engineering activities
Experience in multi-project environments and cross-functional teams
Ability to contribute to knowledge-sharing and skills transfer

Full Description

We are seeking two experienced Senior Performance Testers to support multiple strategic projects currently in execution across the organization. These initiatives span areas such as business separation, digitization, generation turnaround, distribution, and commercial transformation. The successful candidates will form part of the Testing Centre of Excellence (TCoE), a centralized testing function within Group IT that provides independent, specialist testing services to ensure the delivery of high-quality software solutions. Testing resources will be assigned across multiple projects, playing a critical role in improving delivery timelines, system performance, and overall software quality.

Key Responsibilities

The Senior Performance Tester will be responsible for, but not limited to, the following

Performance & Non-Functional Testing
Analyze and understand non-functional requirements
Define the approach and methodology for non-functional testing
Produce detailed Performance Test Plans
Design, develop, and maintain load, stress, and performance test cases and procedures
Develop and maintain non-functional test scripts
Execute performance tests and analyze results
Log defects and manage retesting through to closure
Maintain the non-functional test script repository
Plan, execute, and report on all performance-related testing activities within assigned projects
Support broader performance engineering activities as required
Tools & Environment Management
Evaluate, select, and recommend appropriate performance testing tools
Set up, configure, and manage the performance testing tool suite
Work closely with Technical Architecture, Infrastructure, and Tools teams
Support walkthroughs and inspections of load and stress test procedures

Requirements Minimum Requirements ISTQB Foundation certification Minimum 5+ years’ experience as a Performance Tester Minimum 5+ years’ hands-on experience using LoadRunner BTech in Information Technology or an equivalent qualification Strong experience in non-functional testing within complex environments Ability to work across multiple projects simultaneously Willingness to be based onsite at MWP, Johannesburg Training & Knowledge Sharing Participate in TCoE knowledge-sharing sessions Contribute to skills transfer and continuous improvement initiatives within the testing team

Key Competencies Strong analytical and problem-solving skills Excellent communication and stakeholder engagement skills Ability to work independently and within cross-functional teams Strong documentation and reporting capability Attention to detail and commitment to quality delivery