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.