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Performance Tester
Title: Performance Tester
Category: IT/Software Development
Job type: Permanent
Job status: Full Time
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Performance Tester


Performance Tester should possess strong analytical and problem-solving skills and have an eye for detail. We require a highly-motivated individual with well-developed interpersonal skills. You will be the Technical Performance Analyst in a specialist performance team working across Salmon’s broad client base.

You will be involved in the defining and creating performance scripts, executing the performance testing and then analysing, in detail, the results, and identifying problematic features and making recommendations to the wider team to resolve these.

This is a key role, responsible for the delivery and support of many high-profile eCommerce systems. The challenges you will face include different architectures, application components and their interaction.


Talented, enthusiastic, focused, eye for detail, professional. Keen to learn and find new ways of doing things. A team player who is proud of your work and wants to share with everyone! You like working in a fast-paced environment and are driven by the desire to improve the online purchasing experience for everyone, no matter what they are buying and from where!

The techy bit… we need you to be really great at:

5+ years’ experience in performance testing of eCommerce applications. 3+ years’ hands on experience of Performance test load generation tools, including JMeter. 1 years’ experience working within an Agile environment. 3+ years’ experience using Application Monitoring Tools including DynaTrace or AppDynamics. 3+ years hands on experience performance problem determination and root cause analysis. Very good knowledge and proven experience working on Linux and AIX environments. Experience tuning highly scalable applications, including reviewing configurations around cache sizes and heap sizes. Experience interpreting and analysing real user monitoring statistics. Experienced in load forecasting for peak times, and assessing likely resilience of systems as well as making recommendations on how to improve based on business needs. Experienced in pinpointing and resolving real time performance issues in live systems. Very good backend testing skills – conversant in databases (DB2, Oracle), SQL knowledge, use of DB Visualiser. Java expertise up to Architect level. Including profiling, ability to review java source code and recommend optimisations. Excellent interpersonal skills and a proven ability to collaborate with all stakeholders. Highly organized and owns their own deadlines, willing to go above and beyond what was promised to deliver quality service. Expertise in front end page load analysis and profiling and optimisation using Firebug/Pagespeed or other tools. Ecommerce platform expertise and experience performance testing and analysis on IBM WebSphere Commerce and SOLR search. Hands on experience analysing log files to make performance enhancement recommendations. Competent in logging identified issues, and tracking them through to resolution. If you know some of this even better!

Experience setting up performance monitoring using Grafana. Experience with other APM tools like New Relic Experience implementing performance testing in a continuous delivery environment. Scripting (Grinder, perl, awk etc) Competent in PHP Experience with Apache Tomcat, JBoss Experience with other load generation tools eg LoadRunner. eCommerce platform expertise and experience performance testing and analysis on Hybris, Magento and Intershop Salmon is an award-winning global digital eCommerce consultancy with operations in London, Amsterdam, Beijing, Melbourne and New Delhi. We’re part of the global WPP group and Wunderman Commerce.

Our aim is to define, design and deliver dynamic, high performance, state-of-the-art eCommerce sites for the world’s leading brands. We work for some of the best… Audi UK, Akzo Nobel, DFS, Halfords, Sainsbury’s, Selfridges, Staples, Ted Baker, Xerox and YOOX NET-A-PORTER GROUP.

Our Salmon DNA is what pulls us all together. We want to make our client happy. Our reputation is based on having the best people in the business, who are honest and straight talking and really want to understand not just our clients but their customers. We are passionate about the innovative approach we take in everything we do and we are proud of what our teams achieve. We show respect for all and trust and empower our people and we won’t settle for second best!

As our business grows, so we need to find new people who share our values, work ethic and DNA. We especially want to encourage more Women to join us and take a key role in shaping and moulding some of the best eCommerce sites in the world.
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