QA Software (Load & Performance) Test Engineer
Core
Design, execute, and analyze load, stress, and scalability tests for the ZONOS ecosystem (MDM, HES, APIs, streaming, databases) to identify bottlenecks and ensure system capacity before release.
Role type
Senior IC performance engineering specialist
Builds
Production-ready utility platforms and integration components for the energy management market
Domain
Energy management / Utility / IoT / Meter data management
Required skills
Load testing, stress testing, scalability testing, API testing, database query analysis, Kafka/streaming pipeline testing, distributed systems knowledge, microservices performance analysis, observability, scripting (Python/JavaScript/Groovy/Bash/Java), log analysis, metrics analysis
Preferred skills
AMI/smart metering systems, MDMS platforms, VEE validation, DLMS/COSEM concepts, large-scale device simulation, Kubernetes, CI/CD integration for performance tests
Technologies
JMeter, k6, Simulator, Mock server, Prometheus, Grafana, PostgreSQL, Oracle, Kafka, REST APIs, Kafka topics/partitions, JVM, containers
Responsibilities
Define realistic load profiles and test scenarios; Execute performance tests (load, stress, spike, failover); Analyze bottlenecks across APIs, databases, Kafka, and backend services; Monitor system metrics (CPU, memory, latency, queue depth); Prepare detailed performance reports with recommendations; Collaborate with QA, DevOps, and developers to define acceptance criteria.
Seniority
Mid-Senior, hands-on IC
