Front end developer, javascript, html5, css, android Work, Jobs in Reading, Eng (with Salaries)

Senior Performance Tester
IT VALLEY (LONDON) LIMITED —Egham
- £40,000 - £52,000 a year
- Full-time
- Azure
- Sales
- Java
Quick apply
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Infotree Consulting Limited —High Wycombe
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Senior Performance Tester

IT VALLEY (LONDON) LIMITED
Egham

Quick apply

Job details

Permanent | Full-time
£40,000 - £52,000 a year

Qualifications

Azure
Sales
C#
LoadRunner
Test automation
Selenium
Performance testing
Java
Software quality assurance
JavaScript
Scripting
Scrum
APIs
Software testing
Agile
Jenkins
GitLab
Communication skills
Python

Full job description

Job ID: ITV/JUNE2026/02

Number of positions: 02

IT Valley (London) Limited is looking for a motivated and enthusiastic Senior Performance Tester to join our growing team. The ideal candidate will be responsible for identifying new business opportunities, building client relationships, and supporting the company’s sales growth. This role requires good communication skills, confidence in dealing with customers, and the ability to achieve sales targets.

Duties and Responsibilities:

· Design and manage the overall performance testing strategy for web and mobile applications, ensuring alignment with business and technical objectives.

· Define measurable performance benchmarks, SLAs, and success criteria in collaboration.

· Conduct load, stress, endurance, and scalability testing to evaluate application behavior under normal and peak traffic conditions.

· Validate application responsiveness, stability, and reliability to ensure optimal end-user experience.

· Prepare and present performance test results, risk assessments, and release readiness reports to leadership and clients.

· Plan and coordinate performance testing activities across sprint cycles and release schedules.

· Work closely with developers, architects, and business analysts to integrate performance requirements early in the development lifecycle.

· Analyze system architecture, infrastructure limitations, and integration dependencies to identify performance risks and capacity issues.

· Investigate bottlenecks related to application code, APIs, databases, network latency, or infrastructure constraints.

· Provide technical leadership to testing teams by reviewing deliverables, setting standards, and driving process improvements.

Act as the primary escalation point for critical performance-related concerns and support release decisions.
Promote continuous improvement by enhancing testing frameworks, methodologies, and automation practices.

Skills & Experience

· Extensive hands-on experience in performance testing of large-scale enterprise applications.

· Strong knowledge of performance engineering concepts including load testing, capacity planning, stress testing, and bottleneck analysis.

· Experience with automation frameworks and testing tools such as Appium, Selenium, Cypress, Espresso, XCUITest, or similar platforms.

· Strong programming/scripting skills in Java, Python, JavaScript, or C# for test automation and framework development.

· Experience integrating automated testing into CI/CD pipelines using tools such as Jenkins, GitLab CI, Azure DevOps, or equivalent.

· Solid understanding of distributed application architecture, APIs, databases, and system integrations.

· Hands-on experience with APM and monitoring tools such as Dynatrace, AppDynamics, Datadog, or similar solutions.

· Strong experience working within Agile/Scrum environments.

· Excellent analytical, troubleshooting, and problem-solving skills.

· Proven ability to mentor junior testers or lead performance testing teams.

Pay: £40,000.00-£52,000.00 per year

Work Location: In person

Quick apply

Refine Your Search

front end developer, javascript, html5, css, android jobs in reading, eng

Senior Performance Tester

Fitted Furniture sales designer

Senior Engineer, Investment Technology

Lead Consultant / Architect - Document Control and Engineering Information Management (m/f/d)

Digital Solutions Architect

Senior Software Consultant

Office Assistant and Receptionist

Software Engineering Manager

Senior Python Cloud Developer

Advanced Physiotherapist Practitioner

SharePoint Administrator

Application Architect

Contracts Manager

Senior Software Development Engineer

Plant Maintenance Fitter - Recycling

Senior Graphic Designer

Planning Lead

Senior Salesforce Software Engineer

Lead Web Developer - PHP/Laravel/Full Stack

Teamcenter Solution Architect

I want to receive the latest job alerts for front end developer, javascript, html5, css, android in reading, eng

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