Application Test Engineer

ELLIOTT MOSS CONSULTING PTE. LTD.; Penarth; On-site; GBP 40,000 - 60,000; Full time

Job summary

A consulting firm in Penarth is seeking an Application Test Engineer to design, execute, and lead performance testing initiatives for enterprise-scale applications. This role involves collaborating with architects, developers, and stakeholders to ensure system scalability and reliability. The ideal candidate will have hands-on experience in performance testing, familiarity with tools like LoadRunner and JMeter, and strong analytical skills. Mentoring junior testers and managing testing tools are also key responsibilities.

Qualifications

• Proven hands-on experience in performance testing and performance engineering.
• Strong expertise in performance testing tools such as LoadRunner, JMeter, NeoLoad, or Gatling.
• Proficiency in scripting and test development using Java, Python, or JavaScript.

Responsibilities

• Define and implement performance testing strategies, plans, and scripts.
• Collaborate with architects, developers, and stakeholders to identify performance requirements.
• Lead performance, load, stress, and endurance testing activities.

Skills

Performance testing

LoadRunner

JMeter

NeoLoad

Gatling

Java

Python

JavaScript

Analytical skills

Communication skills

Job description

We are looking for Application Test Engineer to design, execute, and lead performance testing initiatives for enterprise-scale applications. The successful candidate will work closely with architects, developers, and stakeholders to ensure system scalability, reliability, and performance meet business expectations.

Key Responsibilities:

• Define and implement performance testing strategies, plans, and scripts aligned with project requirements.

• Collaborate with solution architects, developers, and business stakeholders to identify performance requirements, SLAs, and KPIs.

• Lead performance, load, stress, and endurance testing activities across applications and platforms.

• Analyse test results to identify performance bottlenecks, scalability issues, and system constraints.

• Prepare and present detailed performance test reports, findings, and optimisation recommendations to technical and business teams.

• Manage performance testing tools, test environments, test data, and execution schedules.

• Support performance tuning efforts across application, database, and infrastructure layers.

• Mentor junior testers and coordinate with regional or global QA teams to ensure testing standards and best practices are followed.

Required Skills & Experience:

• Proven hands-on experience in performance testing and performance engineering.

• Strong expertise in performance testing tools such as LoadRunner, JMeter, NeoLoad, or Gatling.

• Proficiency in scripting and test development using languages such as Java, Python, or JavaScript.

• Solid understanding ofb>system architecture, application performance tuning, monitoring concepts.

• Experience working with performance metrics, monitoring tools, and log analysis.

• Excellent analytical, communication, and stakeholder management skills.

• Ability to work independently and collaboratively in a fast-paced project environment.