Senior Performance Test Engineer

PERFORMANCE TEST ENGINEER / PERFORMANCE ENGINEERING LEAD Location: Singapore Industry: Telecommunications / Technology We are partnering with a leading technology-driven telecommunications organisation that is rapidly scaling its digital initiatives and platforms. We are looking for an experienced Performance Test Engineer / Performance Engineering Lead to take ownership of performance testing and drive application and service performance improvements across large-scale systems. This is an excellent opportunity to work with modern technologies, large-scale platforms and cross-functional engineering teams while making a direct impact on application performance, reliability and user experience. KEY RESPONSIBILITIES - Take ownership of existing performance test scripts and frameworks currently managed by vendors. - Design, schedule and drive end-to-end performance testing activities. - Define performance testing strategies, scenarios, workload models, test environments, expected results and success criteria. - Design and implement processes to improve the efficiency, reliability and execution time of performance tests. - Establish and track application and service performance metrics, NFRs and SLOs. - Build capacity and load models in collaboration with Architecture and Engineering teams. - Analyse performance test results, identify bottlenecks and work with engineering teams to drive performance improvements. - Collaborate closely with Engineering, QA, Architecture and Product stakeholders to align performance objectives. - Establish effective ways to track, measure and report the results and effectiveness of performance test runs. - Provide performance insights and recommendations to improve application scalability, stability and user experience. - Support performance triage, release governance, performance sign-off and release-blocking decisions where required. - Communicate performance test outcomes and recommendations to both technical and non-technical stakeholders. - Drive continuous improvement of performance engineering standards, practices and processes. MUST-HAVE SKILLS & EXPERIENCE LOAD MODELLING & PERFORMANCE ENGINEERING - Strong experience defining Non-Functional Requirements (NFRs) and Service Level Objectives (SLOs) with Architecture and Engineering teams. - Experience building capacity and workload models based on business and technical requirements. - Strong understanding of open vs. closed workload models and their application in performance testing. PERFORMANCE TESTING TOOLS - Strong hands-on experience with one or more of k6, JMeter, Gatling or LoadRunner. - Proven experience executing performance tests at real production-like scale, including distributed load generation. - Strong experience in correlation, parameterisation and complex performance test scripting. OBSERVABILITY & APM - Hands-on experience with one or more observability/APM platforms such as: Dynatrace, AppDynamics, New Relic, Grafana, Prometheus, Splunk, ELK or OpenTelemetry. - Ability to use application and infrastructure telemetry to identify, isolate and troubleshoot performance bottlenecks. CLOUD & PLATFORM - Strong understanding of cloud-native and distributed application environments. - Experience with Docker/containers and Kubernetes. - Good understanding of load balancers, queues and distributed systems. - Experience with protocols and technologies beyond REST, such as gRPC, WebSockets and messaging/queue-based systems. TECHNICAL LEADERSHIP - Experience establishing or significantly improving a performance testing/performance engineering practice. - Ability to define engineering standards, testing methodologies and best practices. - Experience mentoring engineers and building high-performing technical teams. - Strong ability to drive continuous improvement in performance testing efficiency, reliability and execution time. STAKEHOLDER MANAGEMENT & RELEASE GOVERNANCE - Strong experience working with Engineering, QA, Architecture, Product and other stakeholders. - Ability to communicate performance results and recommendations effectively to non-technical audiences. - Experience managing performance triage, release sign-off and performance-related release blocking decisions. - Strong ability to establish KPIs and report on performance trends and improvement.