Performance Engineer (Frontend Focus)
Capgemini
Jersey City, NJ, United States
3 days ago
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Role details
Contract type
Contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
10 years minimum
Working hours
Regular working hours
Job source
Tech stack
Microsoft Azure
Cloud Computing
Profiling
Databases
Amazon DynamoDB
Apache JMeter
NoSQL
Site Reliability Engineering Practices
SQL Databases
Web Usability
Datadog
Link Control Protocol
+15 more
System Availability
Grafana
Gatling
Caching
Scalability Testing
AWS ECS
Front End Software Development
Functional Programming
Cloudwatch
Api Gateway
Splunk
New Relic (SaaS)
Appdynamics
Dynatrace
Network Optimization
Job description
- 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 fullstack performance visibility.
- Improve frontend performance and Core Web Vitals (LCP, FID, CLS, INP) through network optimization, resource compression, and rendering improvements.
- Conduct endtoend performance analysis across application, database, infrastructure, and cloud layers.
- Perform load, stress, soak, and scalability testing using JMeter, Gatling, K6.
Requirements
- Strong knowledge of RUM and APM tools - AppDynamics (preferred), New Relic, Datadog.
- Handson 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.
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