Lead Performance Tester, SDET

Vonage

Lead Performance Tester managing performance engineering strategy across cloud-native telecom platforms. Collaborating with teams and leveraging tools to ensure system performance and scalability.

Posted 4/14/2026full-timeRemote • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

AWSCloudDistributed SystemsEC2GrafanaJavaJenkinsJMeterKafkaMicroservicesPythonRabbitMQTypeScript

About the role

Key responsibilities & impact

Define and lead the performance engineering strategy across high-availability, cloud-native telecom platforms
Lead, train, and coordinate a distributed guild of SDETs
Design, develop, and evolve scalable backend performance frameworks using k6, Python, Java, or TypeScript
Implement and manage production traffic replay strategies
Own and drive performance, load, stress, endurance, scalability, and resilience testing
Validate real-time communication systems, event-driven architectures (Kafka, RabbitMQ)
Integrate performance testing into CI/CD pipelines
Leverage observability tooling (Grafana, CloudWatch, Coralogix, VictoriaMetrics, PMM)
Establish performance benchmarks, SLAs, SLOs, and error budgets
Collaborate with architecture and data teams to identify bottlenecks
Analyse and optimise performance across both legacy monolith systems and modern microservices architectures

Requirements

What you’ll need

Proven experience mentoring and coordinating testing efforts across large, distributed engineering teams
Strong hands-on experience with AWS cloud services (EC2, ECS, RDS, API Gateway)
Proven expertise in performance testing tools (specifically k6, along with JMeter or Gatling)
Hands-on experience with production traffic shadowing or replay tools (such as GoReplay)
Deep experience testing distributed systems, message brokers (Kafka, RabbitMQ), microservices architectures, and high-volume, low-latency APIs
Solid backend programming and scripting skills in Python, Java, or TypeScript
Strong understanding of system design, concurrency, throughput, latency, and fault tolerance principles
Experience implementing performance testing within CI/CD pipelines (Jenkins, GitHub Actions)
Hands-on experience with observability and monitoring tools (Grafana, Coralogix, PMM)
Experience working within Agile environments

Benefits

Comp & perks

Health insurance
401(k) matching
Flexible work hours
Paid time off
Remote work options

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

performance engineeringbackend performance frameworksk6PythonJavaTypeScriptperformance testingsystem designconcurrencyfault tolerance

Soft Skills

mentoringcoordinationcollaboration