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Testbits Sdn Bhd • Kuala Lumpur, Kuala Lumpur, Malaysia
Role & seniority: Performance Tester (mid-level)
Stack/tools: JMeter (advanced test plans, scripting), LoadRunner (VuGen, Controller, Analysis), IBM Rational Performance Tester; HTTP/HTTPS, Web/API performance (REST/SOAP); CI/CD integration; APM tools; basic scripting (Groovy, Python, Shell)
Design, execute (load, stress, endurance) and analyze performance tests across integrated systems
Identify bottlenecks (CPU, memory, network, DB, APIs) and establish performance benchmarks; validate behavior under peak load
Collaborate with development, QA, infrastructure/DevOps; produce clear test reports with findings and recommendations
2+ years hands-on performance testing in large-scale, integrated Telco/complex systems
Proficiency with JMeter (test plans, correlation, parameterization, custom scripting), plus LoadRunner and IBM Rational Performance Tester
Strong understanding of HTTP(S), web/API testing, middleware/backend systems; experience with performance monitoring/APM; CI/CD experience
Analytical, troubleshooting, and problem-solving abilities; basic scripting (Groovy/Python/Shell)
ISTQB CTFL or equivalent
Experience in Agile/Scrum environments
Familiarity with third-party services and databases in integrated setups
Location & work type: Location – Telco domain (no specific city provided); Work type – not specified in description
We are seeking a skilled and self-driven Performance Tester to join our team in Telco domain. The Performance Tester will be responsible for designing, executing, and analyzing performance tests using tools such as JMeter to ensure that systems can handle high traffic, meet performance benchmarks, and remain stable under load. This role requires working independently, proactively identifying performance bottlenecks, and collaborating with cross-functional teams to optimize system performance. The ideal candidate has prior experience working on large-scale projects involving complex system integrations.
Requirements
Design and execute performance tests (load, stress, endurance) using JMeter, LoadRunner, and IBM Rational Performance Tester Analyse test results to identify performance bottlenecks (CPU, memory, network, database, APIs) Establish performance benchmarks and validate system behavior under peak load Collaborate with development, QA, infrastructure, and DevOps teams to support performance optimisation Prepare clear performance test reports with findings and recommendations Support performance testing across integrated systems (APIs, middleware, third-party services, databases)
Educational Background: Bachelor's degree in Computer Science, Information Technology, or a related discipline
Experience: At least 2 years of hands-on experience in performance testing, specifically using JMeter in complex and integrated Telco systems or similarly large-scale environments
ISTQB CTFL or equivalent certification Experience in Agile and Scrum environments is a plus
Candidates without hands-on experience in JMeter-based performance testing on large-scale or integrated systems may not be considered. Show more Show less