Purpose 

The Performance Test Lead will own and drive the performance testing strategy for our IoT & SCADA platform. This role is responsible for designing and executing load, stress, and endurance tests across on-premises and Microsoft Azure environments to ensure the platform can handle high-volume IoT data, real-time SCADA operations, and enterprise-scale workloads while meeting performance, scalability, and reliability requirements. 

Duties and Responsibilities 

• Design performance testing strategies, test plans, KPIs, SLAs, and performance models for IoT ingestion, SCADA polling, dashboards, alerting, and reporting. 
• Configure performance test environments that replicate on-premises and Azure production environments. 
• Develop and maintain performance test scripts using JMeter, k6, Locust, Gatling, or similar tools. 
• Simulate large-scale workloads, including 10,000+ device connections, MQTT/OPC UA traffic, high-frequency sensor data, and SCADA HMI activity. 
• Integrate automated performance tests into Azure DevOps CI/CD pipelines. 
• Monitor and analyze system performance using Azure Monitor, Application Insights, Log Analytics, Grafana, and similar tools. 
• Identify bottlenecks and analyze CPU, memory, database latency, IoT Hub throttling, network performance, and end-to-end latency. 
• Prepare performance reports, capacity recommendations, and SLA pass/fail results for engineering teams and client stakeholders. 
• Work closely with developers, DevOps, and infrastructure teams to improve application, database, and cloud performance. 
• Support UAT, major releases, client deployments, and post-release hypercare. 
• Establish performance testing standards, templates, processes, and best practices for the organization. 
• Ensure performance testing is conducted safely, particularly when working with systems connected to live OT/SCADA environments. 

Qualifications/ Requirements of the job 

• 5+ years of experience in performance testing, with proven experience designing performance strategies and not only executing test scripts. 
• Strong hands-on experience with JMeter, k6, Locust, Gatling, or similar performance testing tools. 
• Experience testing cloud-native, hybrid, and enterprise-scale systems, preferably in Microsoft Azure environments. 
• Understanding of IoT and SCADA systems, including device telemetry, MQTT, OPC UA, PLCs, real-time dashboards, and time-series data. 
• Experience working with high-volume or high-cardinality data and real-time performance requirements. 
• Strong analytical and troubleshooting skills, with the ability to interpret logs, metrics, and traces to identify root causes. 
• Experience with performance monitoring and observability tools. 
• Strong communication and reporting skills, with the ability to present technical findings to both technical and non-technical stakeholders. 
• Experience with Azure IoT Hub and Azure Data Explorer or similar time-series databases. 
• Knowledge of Kubernetes, Docker, and Terraform for performance test environment setup. 
• Familiarity with OT networks, PLCs, and industrial communication protocols. 
• Experience integrating performance testing into Azure DevOps. 
• ISTQB Performance Testing certification. 
• Microsoft Azure Administrator or Azure Solutions Architect certification.