Senior Performance Test Engineer: Scale & Optimize Web Apps

Intellibee; Sacramento (CA); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Long-Term Stability

Comprehensive Health Coverage

Future Planning

GC Assistance

Job summary

IntelliBee is seeking a Senior Performance Test Engineer to lead performance testing for Sacramento-based web applications and APIs. You will design, execute, and optimize load, stress, and endurance tests using JMeter, build realistic workload models, and validate results against defined SLAs.

The role requires hands-on testing, deep analysis of performance metrics, and collaboration with DevOps, architecture, and database teams to drive performance improvements and ensure reliability.

Qualifications

• Experience with JMeter for performance testing and load testing.
• Ability to develop realistic workload models using transaction volumes and concurrency.
• Experience in identifying performance bottlenecks and conducting root-cause analysis.

Responsibilities

• Strong hands-on experience with Apache JMeter for performance, load, and stress testing.
• Develop, parameterize, and maintain performance test scripts for web applications and APIs.
• Develop realistic workload models using transaction volumes, throughput, concurrency, pacing, and peak-load patterns.
• Execute load, stress, scalability, concurrency, and long-duration endurance testing (12 hours minimum).
• Analyze performance data: response times, percentiles, throughput, error rates, and resource usage.
• Identify bottlenecks, perform root-cause analysis, support tuning and retesting.
• Test integrated systems and interfaces under concurrent and peak workloads.
• Validate results against SLAs and acceptance criteria.
• Document test scenarios, results, defects, and supporting evidence.
• Collaborate with development, architecture, DevOps, database, infrastructure, and interface teams.

Skills

JMeter

Workload modeling

Hands-on test execution

Bottleneck analysis

API/web performance testing

Performance metrics analysis

Tools

AWS CloudWatch

API Gateway

ECS

RDS/SQL Server

Git

CI/CD pipelines

Job description

IntelliBee is seeking a Senior Performance Test Engineer to lead performance testing for Sacramento-based web applications and APIs. You will design, execute, and optimize load, stress, and endurance tests using JMeter, build realistic workload models, and validate results against defined SLAs.

The role requires hands-on testing, deep analysis of performance metrics, and collaboration with DevOps, architecture, and database teams to drive performance improvements and ensure reliability.