Performance Tester

Solirius Reply; Greater London; Hybrid; GBP 50,000 - 70,000; Full time

Benefits offered by this job

Bonus Scheme

25 Days Annual Leave + Bank Holidays

Development training

Enhanced Parental Leave

Fertility Leave

Contributory Pension

Employee Assistance Program

Flexible Benefits Allowance

Cycle to Work

Flexible Working

Away Days/Company Socials

Job summary

Solirius Reply is seeking experienced Non Functional Test Engineers for a permanent role, focusing on performance testing across API, Front End and UI domains for public and private sector clients.

Applicants must have demonstrable NFT experience; those without a performance testing background will not be considered. The role offers flexible working arrangements and opportunities for development within a Deloitte-Backed technology partner network.

Qualifications

• Experience as a performance tester/engineer on previous roles.
• Experience in developing, executing and maintaining performance test scripts.
• Ability to work across API, Front End, and UI performance testing.

Responsibilities

• Work on performance testing projects covering API, Front End and UI performance testing.
• Gather performance test requirements via project and client meetings and review NFRs.
• Develop, execute and maintain performance test scripts.
• Execute and report on performance tests to technical and business stakeholders.
• Highlight performance test failures against NFRs.
• Carry out performance test analysis.
• Analyse NFRs to ensure they are clear and testable.
• Communicate issues/risks clearly to stakeholders.

Skills

Performance testing

NFR testing

Gatling

JMeter

LoadRunner

API testing

Front End testing

UI testing

Client collaboration

Communication

Tools

Gatling

JMeter

LoadRunner

Job description

Please note: This role requires candidates who hold an active Security clearance or have previously been security cleared

About Us:

Solirius Reply, part of the Reply Group, is a technology consultancy and digital transformation partner that helps organisations solve complex challenges through strategy, design, engineering, and delivery.

We work closely with our clients to deliver secure, accessible, user-focused services that evolve with their needs. By combining deep technical expertise with people-centred design, we create solutions that deliver meaningful, lasting impact.

Our consultants partner directly with client teams, embedding into organisations to understand their goals, challenges, and users. This collaborative approach enables us to deliver tailored solutions that drive measurable outcomes across public and private sectors.

Past and present clients include the Ministry of Justice, Department for Education, Ministry of Housing, Communities and Local Government, UEFA, International Olympic Committee, and Mercedes-Benz. Our services span the full digital delivery lifecycle, including architecture, engineering, delivery management, user-centred design, business analysis, data, DevOps, and AI.

We operate as a collaborative and inclusive organisation that empowers our people to take ownership, innovate, and develop their expertise. As an equal opportunities employer, we are committed to encouraging equality, diversity, and social mobility, while creating opportunities for our teams to work on meaningful projects that deliver lasting impact

The Role:

We are looking for experienced Non Functional Test Engineers with demonstrable experience in Performance Testing and Non Functional Testing to join us on a permanent basis and assist with the running of our performance testing projects. You will be involved in overall NFT as well as API testing, Front End testing and UI based performance testing on behalf of both our public and private sector clients.

Those not from a performance testing background, or without demonstrable experience in performance testing, will not be considered for this role.

Key Responsibilities:

• Working on a variety of performance testing projects covering API, Front End, and UI based performance testing
• Gathering performance test requirements through project and client engagement meetings and reviewing NFRs
• Developing performance test scripts
• Executing and reporting on performance tests to technical and business stakeholders
• Highlighting any performance test failures against NFRs
• Carrying out performance test analysis
• Perform analysis of NFRs to ensure they are clear and testable
• Ensure any issues or risks are clearly communicated to relevant stakeholders in a timely manner

Key Skills/Experience:

• Experience of working as a performance tester/engineer on previous roles
• Working on multiple projects at the same time and able to manage time effectively.
• Experience of developing, executing and maintaining performance test scripts, ideally using Gatling (preferred), Jmeter or LoadRunner.
• Good interpersonal skills and experience of working with client teams or third parties.
• Experience in others Areas of NFT such as Accessibility, Compatibility, Usability, Disaster Recovery etc would be beneficial
• Excellent communication skills, both written and spoken, with an ability to successfully engage with team members and clients

What We Offer:

• Bonus Scheme
• 25 Days Annual Leave + Bank Holidays
• Up to 10 days allocated for development training per year
• Enhanced Parental Leave
• Paid Fertility Leave (5 Days)
• Contributory Pension
• EAP with Help@Hand
• Flexible Benefits Allowance
• Cycle to Work and Electric Vehicle schemes
• Flexible Working
• Annual Away Days/Company Socials

Diversity and Inclusion

As an equal opportunities employer, we are committed to creating a work environment that supports, celebrates, encourages and respects all individuals, where all processes are based on merit, competence and business needs.

Encouraging high social mobility is really important to us. We foster an inclusive culture by welcoming different perspectives, enabling equitable opportunities and promoting open dialogue. This commitment is reflected in initiatives such as our gender diversity group and our focus on mental health and wellbeing. Whatever stage you are at, you will find an environment where you can thrive.

Should you require further assistance or require any reasonable adjustments to be put in place to better support your application process, please do not hesitate to raise this with us.

As a Disability Confident employer, we are committed to ensuring our recruitment process is accessible and inclusive, enabling all candidates to demonstrate their skills, experience and potential.