Description

As a Senior Performance Engineer for Proton VPN, you will focus on enhancing the service's speed and reliability. This role involves analyzing performance metrics, developing testing systems, and collaborating with teams to ensure optimal user experiences across various platforms.

Requirements

• •5+ years of experience in performance engineering or systems QA
• •Knowledge of network protocols (TCP/IP, UDP, TLS, WireGuard)
• •Proven ability to analyze latency, throughput, and stability metrics
• •Proficiency in Python or similar scripting language, or Rust/C/C++
• •Familiarity with network emulation and simulation tools
• •Experience with monitoring and observability stacks and CI/CD pipelines
• •Cross-platform experience with Linux, macOS, Windows, Android, and iOS
• •Analytical and methodical, yet creative in solving complex performance problems
• •Comfortable working with uncertainty and non-deterministic conditions
• •Collaborative mindset, able to work across client, infrastructure, and data teams
• •Strong communication and documentation skills in English

Tasks

• •Define and drive performance measurement and analysis
• •Optimize Proton VPN’s end-to-end performance
• •Design and own the performance framework
• •Define metrics and KPIs for user experience
• •Develop distributed testing systems for network conditions
• •Continuously measure and analyze performance across platforms
• •Identify bottlenecks and regressions in performance
• •Collaborate with teams to optimize protocol handling and connection setup
• •Create dashboards and reports to track performance health
• •Set up automated alerts for global performance monitoring
• •Contribute to resilient connectivity strategies
• •Mentor others and promote a data-driven performance culture

Tools & Technologies

Benefits