Senior Performance Engineer

Role Overview

As a Senior Performance Engineer, you will ensure Nasuni’s Cloud File Data Services platform meets rigorous performance, scalability, and reliability standards at enterprise scale.

This role is ideal for engineers who:

• Thrive in distributed systems environments
• Enjoy diagnosing complex bottlenecks
• Prefer deep technical ownership over people management

This role is not intended for entry-level QA engineers or purely manual testers.

Level & Scope Definition

You will:

• Own performance validation strategy for a defined product domain
• Design and maintain automated performance test frameworks
• Define performance benchmarks and release criteria in partnership with engineering
• Lead root cause investigations for performance-related defects
• Mentor junior engineers in debugging and test design
• Influence architectural decisions through performance insights

You will not:

• Directly manage people
• Own company-wide performance strategy
• Operate solely as a test executor

This role requires high autonomy within your domain and strong cross-functional collaboration.

Responsibilities

• Architect and extend Python-based performance automation frameworks
• Design and execute load, stress, endurance, and scalability tests
• Build and scale performance testbeds across hypervisors and cloud environments
• Analyze system logs, telemetry, and metrics to identify bottlenecks
• Partner with development teams to define performance SLAs and testability requirements
• Integrate performance testing into CI/CD pipelines
• Conduct root cause analysis for performance regressions
• Mentor engineers on distributed systems validation practices

Qualifications

Must-Have Qualifications

• 5–8 years of experience in performance testing or test automation
• Strong Python programming skills
• Hands-on experience validating distributed systems
• Advanced Linux systems knowledge
• Experience designing and executing load/stress testing
• Experience working with CI/CD tools such as Jenkins or GitLab
• Experience using Git workflows

Preferred Qualifications

• Knowledge of NFS, CIFS, or file system protocols
• Experience with benchmarking tools such as SPEC SFS, VDBench, or FIO
• Experience configuring performance environments across hypervisors or cloud platforms
• Networking fundamentals (VLANs, routing, protocol tuning)
• Experience with Terraform or infrastructure-as-code tools

Ideal Qualifications

• Experience validating storage or file infrastructure products
• Experience debugging performance issues across multi-node distributed architectures
• Experience scaling performance environments to simulate enterprise workloads

Experience Guidelines

• 5–8 years total experience in software engineering, performance testing, or infrastructure validation
• 3+ years hands-on experience in distributed systems performance testing
• Demonstrated experience owning end-to-end performance initiatives within a product domain