Senior Software Engineer in Test

Our Performance Load testing team operates on a hub-spoke model, with a core focus on deep understanding load generation systems, test data generation, and node.js and golang applications.

We partner with engineering teams from across all products and platforms at Auth0, working to create more accurate simulated load generation and data generation tests.

You'll be supporting specific teams with performance load coverage, load optimization and testing and ensuring our systems not only maintain their current high level of performance but continuously evolve and improve.

You will partner with other senior load testing engineers, and mentor more junior engineers, working to achieve a high level of team impact.

Programming Knowledge: Experience with a programming language like Node.js , TypeScript , JavaScript , or Golang is a requirement. We're looking for someone with a tester's mindset who can understand code, databases and data structures and collaborate effectively with our engineering teams to ensure high-quality software.

Experience with Databases: Have used databases such as MongoDb or SQL to store configuration or user data, understand tradeoffs between persistence and performance, and have used optimizations in these areas. Familiarity with indexes, query planners a plus. The ability to understand complex join queries and model datasets that leverage them.

Microservices & Kubernetes Exposure: High-level understanding of Kubernetes (K8s) and microservices architecture.

Public Cloud Experience: Familiarity with public cloud environments, AWS and Azure.

A "Developer" Mindset: You're passionate about digging into code, understanding system behavior, and proactively identifying areas for optimization.

Observability tooling experience: Experience using or implementing datadog, new relic, open tracing, open telemetry or similar request tracing tooling. Load testing tool experience with: Jmeter, Apache Bench, Artillery, etc. Linux and Containers: You have leveraged linux and containers in production in the past.

You have deep testing experience , 5+ years working with advanced load generation and analysis systems and tools.

You understand Agentic AI tools, Experience with tools like Claude, Gemini, CoPilot implementing agents, skills, workflows and integrating them into CI/CD pipelines, Git hooks and review processes.

High Scale, High Impact: Work on a global identity platform with millions of users, where your contributions will have a significant and immediate impact across our entire engineering organization.

Solve Complex Problems: Tackle challenging performance and resilience issues in a distributed, high-throughput environment.

Exceptional Growth Opportunities:

Access to conferences and ongoing learning.

Mentorship from staff and senior team members.

Exposure to low-level problems, infrastructure knowledge, microservices, and Kubernetes scheduling optimization.

Opportunities to go deep into areas that genuinely interest you, continuously expanding your skillset.

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