Senior Performance Testing Engineer, Onebrief

• You’re an experienced performance engineer who thrives on data, automation, and continuous improvement
• You understand that performance isn’t just a test at the end — it’s a culture that’s built into design, code, and delivery from day one
• You enjoy collaborating with engineers, architects, and DevOps teams to identify bottlenecks, improve observability, and scale systems efficiently
• You’re motivated by impact, eager to contribute to a high-performing team, and excited by Onebrief’s mission to empower military staff with world-class software
• 7+ years of experience in performance testing and engineering
• Strong hands-on experience with k6, including scripting, scenario modeling, and analysis
• Proficiency in JavaScript/Typescript for k6 scripting
• Experience with Grafana, Prometheus, InfluxDB, or similar monitoring and metrics tools
• Strong understanding of HTTP, REST, WebSockets, and microservices architectures
• Solid experience integrating performance tests in CI/CD pipelines (GitHub Actions, GitLab CI, or Jenkins)
• Experience with cloud environments (AWS, Azure, or GCP) and distributed load testing setups
• Excellent analytical, troubleshooting, and communication skills
• You are obsessed with creating value for real users
• You are ambitious, scrappy, and a creative problem-solver
• You learn quickly, work iteratively, and naturally seek collaboration
• You approach your work with integrity, intellectual honesty, and low ego
• You communicate frankly, clearly, and succinctly
• You thrive as a self-starter, embracing autonomy and ambiguity

Desirable

• We’re looking for a Senior Performance Testing Engineer to lead the design, development, and execution of our performance and scalability testing strategy
• You’ll partner closely with Product and Engineering teams to ensure our mission-critical platform is reliable, performant, and ready to scale with our rapidly growing user base
• In this role, you’ll define what “performance quality” means at Onebrief, contributing to frameworks, metrics, and automation that allow us to understand and improve system performance continuously
• You’ll introduce best practices around performance testing, help integrate them into CI/CD, and mentor others in data-driven performance engineering
• This is a foundational role that will shape how we think about performance, reliability, and quality as we scale our product and infrastructure
• Lead performance testing strategy, planning, and execution using k6 (open-source and cloud)
• Design and implement robust, reusable, and parameterized performance test scripts in Typescript
• Simulate realistic load, stress, and soak test scenarios across APIs, web applications, and microservices
• Analyze results to uncover bottlenecks and performance issues across front-end, backend, and database layers
• Partner with Developers, DevOps, and Architects to integrate performance objectives into the CI/CD pipeline
• Work with stakeholders to define and maintain performance SLAs and ensure adherence across environments
• Collaborate with the Quality Enablement team to evolve our performance observability, tooling, and metrics strategy
• Mentor engineers on performance testing best practices, code efficiency, and scalability principles
• Present detailed reports and insights that guide product and infrastructure improvements