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Performance Tester

Job Posted: 15 days ago

Salary: £ 450 - 500 / Day
Job Type: Contract
Location: Reading, Berkshire

Expire in: 13 days

Job Description

Role: Performance Tester
Work Model & Location: Hybrid - 2-3 day onsite in Reading
Duration: 6 Months+
The role involves validating system scalability, response time, throughput, and stability under real-world and peak load conditions to ensure business-critical billing processes operate without performance degradation.
Our client, working with a British multinational energy company who are a constituent of the FTSE 100 Index are seeking an experienced Performance Tester to support the Keystone transformation program, focusing on non-functional validation of billing systems, integrations, and dual run operations.
Your responsibilities:
  * Analyse performance testing requirements including user load, throughput, transaction volumes, and usage patterns
  * Prepare Performance Test Strategy and Test Plan aligned to program milestones
  * Design and develop performance test scripts using JMeter and/or LoadRunner
  * Execute load, stress, endurance, and volume testing
  * Monitor application performance using tools such as Dynatrace, AppDynamics, or Azure Monitor
  * Analyse results and identify bottlenecks and system limitations
  * Prepare performance reports and tuning recommendations
  * Manage performance defects through to resolution
  * Support dual run validation ensuring stable billing operations
  * Validate high-volume transactions across multiple integrated systems.
Your Profile
Essential skills/knowledge/experience:
  * 5–10 years of experience in Performance Testing / Non-functional Testing
  * Strong experience with JMeter, LoadRunner, or NeoLoad
  * Understanding of workload modelling and performance engineering concepts
  * Experience in Agile / DevOps environments
  * Experience in utilities or billing systems is highly desirable
Key Deliverables
  * Performance Test Strategy and Plan
  * Test Scripts and Workload Models
  * Execution Reports and Dashboards
  * Bottleneck Analysis and RCA
  * Performance Test Summary and Sign-off Report
Desirable skills/knowledge/experience:
  * Strong analytical and problem-solving skills
  * Excellent communication and stakeholder management
  * Ability to work in multi-vendor environments
  * Proactive risk identification and mitigation

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