Senior Test Engineer & Performance Testing Specialist

Version 1 Group; Greater London; Hybrid; GBP 55,000 - GBP 75,000; Full time

Job summary

A leading technology services provider in Greater London is seeking a Senior Test Engineer – Performance Testing Specialist. The ideal candidate should have over 3 years of experience in performance testing with tools such as JMeter and Gatling. Responsibilities include driving performance testing strategies and mentoring engineers. The company offers extensive benefits, including financial wellbeing schemes, flexible/remote working options, and strong career progression opportunities. Join them to make a meaningful impact in performance engineering.

Benefits

Quarterly Performance‑Related Profit Share Scheme

Flexible/remote working

Educational assistance

Gym Discounts

Wellbeing schemes

Qualifications

• Minimum 3 years' experience in a senior testing role.
• Strong hands-on experience with performance testing tools.
• Experience building or enhancing automated test frameworks.

Responsibilities

• Drive performance testing across multiple projects.
• Design, execute, and analyze performance tests.
• Develop and maintain performance and automation test frameworks.

Skills

Performance testing

Collaboration

Analytical skills

Automation frameworks

Cloud environments experience

Tools

JMeter

Gatling

k6

Dynatrace

Grafana

App Insights

CloudWatch

Job description

Senior Test Engineer – Performance Testing Specialist

• Full-time
• Department: Digital, Data and Cloud

Version 1 has celebrated over 28 years in Technology Services and continues to be trusted by global brands to deliver solutions that drive customer success. Our expertise enables our customers to navigate the rapidly changing Digital-First world we live in. We foster strong partnerships with leading technology giants including Microsoft, AWS, Oracle, Red Hat, OutSystems, Snowflake, ensuring that our customers are provided with the highest quality solutions and services.

We’re an award-winning employer reflecting how our employees are at the very heart of Version 1 and what we do:

• 10+ years as a Great Place to Work in Ireland & UK
• Best Workplace for Women in the UK & Ireland by GPTW
• Best Workplace for Wellbeing in the UK by GPTW

We’re a core values driven company, we hire people who share our values, and we reward those who display and foster them, it’s deeply embedded within our DNA. Invest in us and we’ll invest in you!

Are you a passionate performance engineering expert looking to make a real impact? We’re looking for a Senior Test Engineer to join our team and take ownership of performance testing across a diverse range of projects.

In this role, you will define and drive performance testing strategies, lead hands‑on test execution, and provide clear insights that shape high‑quality software delivery. You’ll collaborate with developers, architects, and product teams to ensure performance and non‑functional requirements are embedded from design through to release.

You will also play a key role in uplifting our test practice—mentoring engineers, improving frameworks, and integrating performance testing into CI/CD pipelines and quality gates.

What You’ll Do

• Drive performance testing across multiple projects, including load, stress, soak, and scalability tests.
• Design, execute, and analyze performance tests, identifying risks early in the SDLC and providing clear, actionable insights.
• Develop and maintain performance and automation test frameworks including version control and code quality practices.
• Collaborate with engineering and product teams to embed non-functional requirements.
• Integrate performance testing into CI/CD pipelines, release processes, and quality gates.
• Communicate test strategies, results, and recommendations clearly to stakeholders.
• Mentor testers and contribute to enhancing our performance testing capability.

Qualifications

• 3+ years’ experience in a senior testing role with ownership of test delivery.
• Strong hands‑on experience with tools such as JMeter, Gatling, k6, with ability to explore and adopt other tools as required.
• Experience building or enhancing automated/performance test frameworks.
• Solid understanding of the SDLC and Agile/DevOps environments.
• Practical exposure to AI‑assisted testing tools.
• Excellent analytical and communication skills with ability to work independently and collaboratively.
• SC eligibility or clearance.
• Experience designing automation frameworks from the ground up.
• Strong all‑round testing knowledge with exposure to exploratory, functional, non‑functional, integration, and acceptance testing.
• Experience with cloud environments such as AWS or Azure.
• Familiarity with observability tools like Dynatrace, Grafana, App Insights, CloudWatch with experience defining and building dashboards with DevOps teams.
• Experience mentoring or contributing to a testing practice.

Why Version 1?

At Version 1, we believe in providing our employees with a comprehensive benefits package that prioritises their wellbeing, professional growth, and financial stability.

• Share in our success with our Quarterly Performance‑Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits.
• Strong Career Progression & mentorship coaching through our Strength in Balance & Leadership schemes with a dedicated quarterly Pathways Career Development programme.
• Flexible/remote working, Version 1 is tremendously understanding of life events and people’s individual circumstances and offer flexibility to help achieve a healthy work life balance.
• Financial Wellbeing initiatives including: Pension, Private Healthcare Cover, Life Assurance, Financial advice and an Employee Discount scheme.
• Employee Wellbeing schemes including Gym Discounts, Bike to Work, Fitness classes, Mindfulness Workshops, Employee Assistance Programme and much more. Generous holiday allowance, enhanced maternity/paternity leave, marriage/civil partnership leave and special leave policies.
• Educational assistance, incentivised certifications, and accreditations, including AWS, Microsoft, Oracle, and Red Hat.
• Reward schemes including Version 1’s Annual Excellence Awards & ‘Call‑Out’ platform.
• Environment, Social and Community First initiatives allow you to get involved in local fundraising and development opportunities as part of fostering our diversity, inclusion and belonging schemes.

And many more exciting benefits… drop us a note to find out more.