Performance Tester

Solirius Consulting; Greater London; On-site; GBP 55,000 - 95,000; Full time

Benefits offered by this job

Competitive salary

Bonus scheme

Private healthcare insurance

25 days annual leave + bank holidays

Training & development opportunities

Enhanced parental leave

Job summary

Solirius Reply is seeking an experienced Non Functional Test Engineer in the UK to lead performance testing across API, UI, and front-end layers. You will develop and execute performance scripts, analyze results, and report to technical and business stakeholders.

The role emphasizes strong communication with client teams and the ability to manage multiple projects simultaneously. The ideal candidate has demonstrable NFT experience and proficiency with Gatling, JMeter or LoadRunner, with a focus

Qualifications

• Demonstrable experience in performance testing.
• Experience developing, executing and maintaining performance test scripts.
• Proficient with Gatling, JMeter or LoadRunner.
• Ability to manage multiple projects concurrently.
• Strong interpersonal and client-facing communication skills.
• Experience in NFT areas (Accessibility, Compatibility, Usability, Disaster Recovery) is a plus.

Responsibilities

• Work on performance testing across API, Front End and UI layers.
• Gather requirements from projects and clients and review NFRs.
• Develop, execute and report on performance tests to stakeholders.
• Identify and communicate test failures against NFRs.
• Conduct performance testing against Azure infrastructure and environments.
• Analyze NFRs to ensure clarity and testability.
• Communicate issues and risks to stakeholders promptly.

Skills

Performance testing

Non-functional testing

Gatling

JMeter

LoadRunner

Time management

Client collaboration

Communication skills

Tools

Gatling

JMeter

LoadRunner

Job description

Salary: £55,000 - 95,000 per year

Requirements:

• We are looking for experienced Non Functional Test Engineers with demonstrable experience in Performance Testing and Non Functional Testing.
• We require previous experience working as a performance tester/engineer.
• We require experience developing, executing, and maintaining performance test scripts, ideally using Gatling, JMeter, or LoadRunner.
• We require the ability to work on multiple projects at the same time and manage time effectively.
• We require good interpersonal skills and experience working with client teams or third parties.
• We require excellent written and spoken communication skills with the ability to engage successfully with team members and clients.
• Experience in other areas of NFT such as Accessibility, Compatibility, Usability, and Disaster Recovery would be beneficial.
• We will not consider candidates without demonstrable performance testing experience.

Responsibilities:

• We work on a variety of performance testing projects covering API, Front End, and UI-based performance testing.
• We gather performance test requirements through project and client engagement meetings and review NFRs.
• We develop performance test scripts.
• We execute and report on performance tests to technical and business stakeholders.
• We highlight any performance test failures against NFRs.
• We carry out performance testing against Azure infrastructure.
• We carry out performance test analysis.
• We analyse NFRs to ensure they are clear and testable.
• We ensure issues and risks are clearly communicated to relevant stakeholders in a timely manner.

Technologies:

• AI
• API
• Azure
• DevOps
• JMeter
• UX UI Design
• Cloud
• Support
• Security

More:

We are Solirius Reply, part of the Reply Group, a technology consultancy and digital transformation partner helping organisations solve complex challenges through strategy, design, engineering, and delivery. We work closely with public and private sector clients, including the Ministry of Justice, Department for Education, Ministry of Housing, Communities and Local Government, UEFA, the International Olympic Committee, and Mercedes-Benz. Our services cover the full digital delivery lifecycle, including architecture, engineering, delivery management, user-centred design, business analysis, data, DevOps, and AI. We offer a competitive salary, bonus scheme, private healthcare insurance, 25 days annual leave plus bank holidays, up to 10 days of development training per year, enhanced parental leave, paid fertility leave, pension, EAP with Help@Hand, gym membership benefits, cycle to work and electric vehicle schemes, flexible working, and annual away days/company socials. We are a collaborative and inclusive employer committed to equality, diversity, social mobility, and accessible recruitment, and we foster a culture where people can take ownership, innovate, and grow.

last updated 36 week of 2026