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Performance Engineer (Frontend Focus)

Proventus MetricsJersey City, NJ🇺🇸United StatesPosted 18 Aug 2026

Why This Role Stands Out

This role offers a fantastic opportunity to significantly impact enterprise application performance and reliability, working with cutting-edge observability tools and SRE principles. You'll thrive here if you have extensive frontend performance engineering experience and a passion for optimizing user experiences and system resilience. Apply now to elevate your career with Proventus Metrics!

Quick Overview

Work Type
On Site
Level
Mid Senior

Job Description

Performance Engineer (Frontend Focus)

Location: Onsite – New Jersey Client: Capgemini / Comcast Experience: 10+ Years

Role Overview

We are seeking a seasoned Performance Engineer with a strong focus on frontend performance engineering. Experience with SRE principles is highly preferable. The ideal candidate will drive service reliability, optimize frontend performance, and enhance observability across enterprise applications using modern monitoring and profiling tools.

Key Responsibilities

  • Ensure high availability and resilience of services, applying SRE practices (SLI/SLO/SLA definitions, error budgets, toil reduction).

  • Identify and resolve systemic reliability issues through architectural improvements.

  • Develop and enhance observability dashboards using AppDynamics, Grafana, ELK, Splunk, OpenTelemetry.

  • Establish performance KPIs, monitor trends, and set proactive alerting mechanisms.

  • Implement distributed tracing and full‑stack performance visibility.

  • Improve frontend performance and Core Web Vitals (LCP, FID, CLS, INP) through network optimization, resource compression, and rendering improvements.

  • Conduct end‑to‑end performance analysis across application, database, infrastructure, and cloud layers.

  • Perform load, stress, soak, and scalability testing using JMeter, Gatling, K6.

Required Skills

  • Strong knowledge of RUM and APM tools – AppDynamics (preferred), New Relic, Datadog.

  • Hands‑on experience with Cloud platforms (AWS – ECS/EKS, Lambda, DynamoDB, CloudWatch, API Gateway, ALB; Azure).

  • Expertise in SQL/NoSQL databases and caching strategies.

  • Solid understanding of Core Web Vitals, browser performance, rendering pipelines, and CDN optimization.

  • Proficiency with frontend profiling tools (Lighthouse, Chrome DevTools).

  • Strong experience in performance scripting (JMeter, K6, Gatling).

  • Dashboarding and monitoring skills with AppDynamics, Quantum Metrics, ELK, Grafana.

Candidate Strengths

  • Frontend Performance: Strong

  • Performance Tuning: Very Strong

  • Load Testing: Very Strong

  • Observability: Strong

  • SRE Fundamentals: Preferable

Skills

DynamoDB
SQL
API Gateway
AWS
ELK
New Relic
Splunk
Azure
CDN
Datadog
Gatling
Grafana
JMeter
k6

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