Lead SDET – Telecom Performance & Scalability
Location: Work from Home - Spain
Department: Apps BU Engineering
Join Vonage and help us innovate cloud communications for businesses worldwide!
What You Will Do
Design, develop, and maintain scalable automated test frameworks using Python and TypeScript ( Playwright)
Build and execute end-to-end, API, integration, and regression test suites
Lead performance, load, stress, scalability testing, and chaos engineering across high-availability telecom platforms
Validate real-time communication systems and event-driven architectures
- Test and verify cloud-native applications deployed within AWS environments
- Ensure systems meet performance, resilience, scalability, and availability standards
- Integrate automated testing into CI/CD pipelines to enable continuous delivery
- Collaborate with Engineering, DevOps, and Product teams within Agile ceremonies
- Identify performance bottlenecks, architectural risks, and quality gaps early
- Contribute to the continuous improvement of QA processes and engineering standards
What You Will Bring
• Strong experience testing telecommunications or CPaaS platforms
• Proven hands-on experience with AWS cloud services (e.g., EC2, ECS/EKS, Lambda, RDS, API Gateway, S3)
• Strong automation development skills in Typescript and Python.
• Solid experience with performance testing tools (e.g., JMeter, k6, Gatling)
• Experience testing distributed systems, microservices, and high-throughput APIs
• Strong understanding of QA principles within Agile/Scrum environments
• Experience embedding testing into CI/CD pipelines
• Strong analytical and problem-solving capability
• Ability to work effectively within distributed/global teams
• Excellent working knowledge of SIPp (Session Initiation Protocol), including hands-on experience generating high volumes of SIP calls for load, stress, and scalability testing.
- Experience working with Ribbon Communications telecom infrastructure, including SBC configuration, SIP routing validation, and performance testing within carrier-grade environments.
Required
Demonstrable hands-on automation experience in Python and TypeScript
- Proven experience testing cloud-native systems deployed on AWS
- Proven experience performing performance and scalability testing
- Experience working in Agile engineering environments
- Strong understanding of API and integration testing
- Solid understanding of system architecture and non-functional testing principles
- Experience with observability tooling. Familiarity with tools like Grafana and Kibana.
- Familiarity with RESTful APIs.
What Is Required for the application?
- Updated CV highlighting relevant telecom, AWS, automation, and performance experience
- Summary of automation frameworks and tools previously used
- Details of performance testing experience (tools, scale, environments)
There’s no perfect candidate. You don't need all the preferred qualifications to make a valuable impact on our team. Our employees and customers come from diverse backgrounds, so if you're passionate about what you could achieve at Vonage, we'd love to hear from you.
To learn how we process your personal data during the recruitment process, please refer to our Privacy Notice.
Who we are:
Vonage is a global cloud communications leader. And your talent will further help brands - such as Airbnb, Viber, WhatsApp, and Snapchat - accelerate their digital transformation through our fully programmable-based unified communications, contact center solutions, and communications APIs. Ready to innovate? Then join us today.
Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.
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