Lead SDET - Telecom Performance & Scalability

Vonage
Municipality of Madrid, Spain
5 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English

Job location

Municipality of Madrid, Spain

Tech stack

API
Agile Methodologies
Amazon Web Services (AWS)
Amazon Web Services (AWS)
Amazon Web Services (AWS)
Automation of Tests
Continuous Delivery
DevOps
Distributed Systems
JMeter
Session Initiation Protocols
Python
Regression Testing
Systems Architecture
TypeScript
Performance Testing
Grafana
Gatling
Ribbon (Software)
Scalability Testing
Amazon Web Services (AWS)
Integration Tests
Api Gateway
Kibana
REST
SDET
Microservices

Job description

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

Requirements

Do you have experience in System architecture?, * 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.

About the company

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.

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