Tester

Experis; Greater London; On-site; GBP 41,000 - 45,000; Full time

Job summary

Experis is seeking a Tester to join our UK team for a 12-month engagement in Manchester or London, with approximately three days onsite per week (some weeks may be five days). The role focuses on designing and executing performance tests, analysing results, and driving improvements across enterprise applications.

The ideal candidate will have extensive performance testing experience, proficiency with JMeter, and familiarity with CI/CD practices, agile delivery, and service-based architectures.

Qualifications

• Experience performing performance testing on enterprise-scale applications.
• Ability design and execute load, stress, volume, endurance, and scalability tests.
• Experience analysing performance metrics and making tuning recommendations.

Responsibilities

• Design, develop, execute, and maintain performance test plans and scenarios.
• Collaborate with Business Analysts and client teams to understand requirements.
• Analyse application performance and identify bottlenecks and capacity issues.
• Develop automated performance test scripts and frameworks.

Skills

Performance testing

Load testing

Stress testing

Endurance testing

Scalability testing

REST APIs

Tools

JMeter

Cucumber

JIRA

Confluence

Job description

ROLE TITLE: Tester

LOCATION: Manchester or London (3 days per week on site with some weeks 5 days)

LENGTH: 12 months

SALARY: £41,000 to £45,000 per annum

5 Years UK Residency AND based in UK

Role Overview

We are actively looking to secure a Tester to join Experis. Experis Consultancy is a Global entity with a well-established team with over 1000 consultants on assignment across 20 clients globally. Our UK operation is growing and has very aggressive plans for expansion over the coming years. We form part of the Manpower group of companies that turn over $20 billion a year collectively. Experis UK have partnerships with major clients across the UK spanning multiple industries; our approach is a very personal one, with both our clients and our own employees. We are passionate about training, technology and career development.

Key Responsibilities

• Design, develop, execute, and maintain performance test plans and test scenarios.
• Collaborate with Business Analysts and client teams to understand functional and non-functional requirements.
• Analyse application performance and identify bottlenecks, capacity issues, and areas for optimisation.
• Develop automated performance test scripts and frameworks.
• Execute load, stress, endurance, and scalability testing activities.
• Produce detailed performance test reports and provide recommendations for improvement.
• Support defect investigation and resolution activities alongside development teams.
• Contribute to test planning, estimation, and assurance activities throughout the delivery lifecycle.
• Work within Agile delivery teams, participating in ceremonies and continuous improvement initiatives.
• Ensure testing activities align with HMRC quality standards, security requirements, and programme objectives.

Mandatory Skills & Experience

Performance Testing

• Strong experience in Performance Testing within enterprise-scale applications.
• Proven experience designing and executing:
• Load Testing
• Stress Testing
• Volume Testing
• Endurance Testing
• Scalability Testing
• Experience analysing performance metrics and tuning recommendations.

Testing Tools

• Strong hands-on experience with JMeter for performance and load testing.
• Experience using Cucumber for Behaviour-Driven Development (BDD) and automated testing.
• Experience with JIRA and Confluence for test management, defect tracking, and documentation.

Technical Skills

• Good development and scripting experience in Java.
• Experience working with REST APIs and service-based architectures.
• Understanding of test automation principles and frameworks.
• Experience investigating application logs and performance monitoring data.

Cloud Technologies

• Experience working within AWS environments.
• Familiarity with AWS tooling and cloud-based application architectures.
• Understanding of performance considerations within cloud-hosted systems.

Desirable Skills

• Experience within HMRC, Government, or wider Public Sector programmes.
• Knowledge of customs, border, taxation, or regulatory systems.
• Experience with CI/CD pipelines and DevOps practices.
• Familiarity with containerisation technologies such as Docker and Kubernetes.
• Experience with monitoring and observability tools.
• ISTQB Certification or equivalent testing qualification.