Performance Engineer (Frontend Focus)

Proventus Metrics; Philadelphia (Philadelphia County); On-site; USD 130,000 - 165,000; Full time

Job summary

Proventus Metrics is seeking a seasoned Performance Engineer with a frontend focus to drive performance improvements across enterprise applications hosted in cloud-native environments. You will analyze bottlenecks, tune JVMs, and optimize rendering, caching, and data access paths while monitoring end-user experiences.

You will work with APM tools like AppDynamics, New Relic, and Datadog, as well as profiling tools and modern observability dashboards.

Qualifications

• Extensive experience in performance analysis and observability across enterprise applications.
• Strong expertise in diagnosing bottlenecks, tuning systems, and driving frontend and backend performance improvements in cloud-native environments.
• Proficient in using APM and profiling tools to deliver actionable optimization recommendations.

Responsibilities

• Conduct end-to-end performance analysis across applications, databases, infrastructure, and cloud platforms to identify gaps and optimization opportunities.
• Diagnose and resolve bottlenecks using APM and profiling tools (AppDynamics, Dynatrace, Datadog, JFR, YourKit).
• Optimize system performance through JVM tuning, analysis, thread management, query optimization, caching strategies, and microservices enhancements.
• Design and execute performance testing strategies (load, stress, soak, endurance, scalability) using JMeter, Gatling, and K6.
• Analyze performance metrics and deliver actionable recommendations to improve reliability, scalability, and user experience.

Skills

Performance analysis

Observability

Frontend performance

Cloud-native

Distributed systems

JVM tuning

Tools

AppDynamics

New Relic

Datadog

JFR

YourKit

Lighthouse

Chrome DevTools

K6

Gatling

JMeter

Grafana

ELK

Quantum Metric

CloudWatch

Job description

Performance Engineer (Frontend Focus)
Philadelphia, PA
Experience: 12 Years

Introduction

We are seeking a seasoned Performance Engineer with extensive experience in performance analysis, optimization, and observability across enterprise applications. The ideal candidate will bring strong technical expertise in diagnosing bottlenecks, tuning systems, and driving frontend and backend performance improvements in cloud-native environments.

Responsibilities

• Conduct end-to-end performance analysis across applications, databases, infrastructure, and cloud platforms to identify gaps and optimization opportunities.
• Diagnose and resolve bottlenecks using leading APM and profiling tools (AppDynamics, Dynatrace, Datadog, JFR, YourKit).
• Optimize system performance through JVM tuning, analysis, thread management, query optimization, caching strategies, and microservices enhancements.
• Design and execute performance testing strategies (load, stress, soak, endurance, scalability) using JMeter, Gatling, and K6.
• Analyze performance metrics and deliver actionable recommendations to improve reliability, scalability, and user experience.

Requirements

Required Skills & Expertise:

• Strong expertise in RUM and APM tools (AppDynamics preferred, New Relic, Datadog).
• Hands-on experience with AWS and Azure services (ECS, EKS, Lambda, DynamoDB, CloudWatch, API Gateway, ALB).
• Deep knowledge of SQL/NoSQL databases, query tuning, and distributed caching.
• Solid understanding of Core Web Vitals, browser performance optimization, rendering pipelines, and CDN tuning.
• Frontend performance analysis using Lighthouse and Chrome DevTools.
• Proficiency in performance scripting and automation (JMeter, K6, Gatling).
• Strong dashboarding and observability skills with AppDynamics, Quantum Metric, ELK, Grafana.
• Proven experience in performance engineering for distributed, cloud-native, and microservices-based applications.