Senior Performance Engineer

About Avaya

Avaya is an enterprise software leader that helps the world’s largest organizations and government agencies forge unbreakable connections.

The Avaya Infinity™ platform unifies fragmented customer experiences, connecting the channels, insights, technologies, and workflows that together create enduring customer and employee relationships.

We believe success is built through strong connections – with each other, with our work, and with our mission. At Avaya, you'll find a community that values your contributions and supports your growth every step of the way.

Learn more at https://www.avaya.com

Job Information

Job Code: 00194007

Job Family: Research and Development

Job Function: Software Engineering

Role Overview

We are looking for a Senior SDET specializing in Performance Engineering in a cloud-native Azure environment. This role focuses on driving scalability, reliability, and performance validation across distributed microservices systems. The candidate will design automated performance frameworks, build simulators and mocks, define KPIs, and partner with engineering, architecture, and SRE teams to ensure production-grade resilience. 

Key Responsibilities

• Design and implement end-to-end performance and load testing strategies for microservices-based systems
• Build custom simulators, traffic generators, and mocks for complex system dependencies
• Define, measure, and track performance KPIs (latency, throughput, error rate, saturation, scalability limits)
• Develop fully automated performance test frameworks integrated into CI/CD pipelines (Jenkins, GitHub Actions, GitLab)
• Execute load, stress, spike, endurance, and chaos testing
• Collaborate with architects, developers, product owners, and SRE teams to optimize system performance
• Analyze bottlenecks across application, database, and infrastructure layers
• Work closely with Azure services (AKS, compute, storage, networking) for performance tuning
• Implement observability using Prometheus, Grafana, and APM tools
• Optimize Redis caching, database queries (MariaDB, MySQL, etc), and messaging systems
• Support resilience engineering and chaos testing (Chaos Monkey or equivalent)
• Drive RCA for performance issues and production incidents
• Contribute to capacity planning and scalability strategy

Required Skills

• Strong experience in performance testing tools (K6, JMeter, Gatling, and creating custom frameworks) 
• Proficiency in scripting (Python, C#, Java, or similar) 
• Deep understanding of distributed systems and microservices architecture 
• Hands-on experience with Kubernetes (AKS preferred) 
• Strong knowledge of Azure cloud ecosystem 
• Experience with CI/CD and DevOps practices 
• Understanding of SRE principles (SLI/SLO, error budgets) 
• Experience with observability and monitoring tools 
• Strong database performance tuning expertise

Preferred Skills

• Experience in contact center / SaaS platforms 
• Exposure to Kafka, RabbitMQ 
• Knowledge of AIOps, AI-driven testing and anomaly detection 
• Experience building custom performance tools or simulators 

Experience

Education

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Applicants must be currently authorized to work in the United States without the need for visa sponsorship now or in the future.

Avaya is an Equal Opportunity employer and a U.S. Federal Contractor. Our commitment to equality is a core value of Avaya. All qualified applicants and employees receive equal treatment without consideration for race, religion, sex, age, sexual orientation, gender identity, national origin, disability, status as a protected veteran or any other protected characteristic. In general, positions at Avaya require the ability to communicate and use office technology effectively. Physical requirements may vary by assigned work location. This job brief/description is subject to change. Nothing in this job description restricts Avaya right to alter the duties and responsibilities of this position at any time for any reason.