Performance Quality Engineer
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Job Description
Performance Quality Engineer optimizing performance for a microservices-based SaaS platform at 8am. Collaborating with various teams to ensure system reliability and performance metrics are met.
Responsibilities:
- Design and create performance test suites for multiple product teams against a microservices-based SaaS platform running on AWS.
- Operate and help maintain production-like environments for performance analysis, diagnosis, and regression testing.
- Analyze application and infrastructure logs to identify, isolate, and help root-cause performance degradations.
- Define, track, and report on performance KPIs (response times, throughput, error rates, resource utilization) and deliver trend analysis and projections to engineering leadership and product stakeholders.
- Use usage and trend data to identify capacity risks and provide recommendations before they impact customers.
- Collaborate with Platform Engineering, DevX, SDET, and Product teams to prioritize and validate performance improvements.
- Partner with Security QE on the overlap between performance and security risk.
- Identify and define nonfunctional performance tests for CI/CD pipeline gates (Integration, Regression, Post-Deployment).
- Contribute to performance engineering standards, runbooks, and best practices within the QE organization.
Requirements:
- 3+ years of hands-on performance testing and analysis on microservices-based, cloud-hosted (AWS) SaaS platforms.
- Strong analytical skills with a demonstrated ability to move from symptoms to root cause.
- Background in statistical analysis: trend modeling, interpolation, extrapolation, and capacity forecasting.
- Working knowledge of AWS (EC2, RDS, S3, ECS/EKS), Docker, and Kubernetes.
- Experience with performance testing tools (k6, Gatling, Locust, JMeter, or equivalent).
- Experience with observability platforms (Prometheus, Grafana, Datadog) and log aggregation (ELK Stack, CloudWatch).
- Scripting proficiency in Python or comparable language for test scenarios, data analysis, and light tooling.
- Comfortable working asynchronously across multiple time zones in a remote-first team.
- Fluent in English (written and spoken); Czech language skills are a plus but not required.
Benefits:
- Diversity, equity & inclusion at 8am.
- A strong team of people who are diverse in background, personality, talent and ideas.
- Ensuring a diverse and inclusive workplace.
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