Senior Performance Engineer

Who We Are:

At VML, we are a beacon of innovation and growth in an ever-evolving world. Our heritage is built upon a century of combined expertise, where creativity meets technology, and diverse perspectives ignite inspiration. With the merger of VMLY&R and Wunderman Thompson, we have forged a new path as a growth partner that is part creative agency, part consultancy, and part technology powerhouse. 

Our global family now encompasses over 30,000 employees across 150+ offices in 64 markets, each contributing to a culture that values connection, belonging, and the power of differences.  Our expertise spans the entire customer journey, offering deep insights in communications, commerce, consultancy, CRM, CX, data, production, and technology. We deliver end-to-end solutions that result in revolutionary work. 

We are VML Enterprise Solutions - a group of talented engineers, tech experts, and creators who combine our passions and contribute to the IT world. You may know us better as Wunderman Thompson Technology – in 2024 we changed our name, but at the same time, we remained a great team of people who deliver our best. We design, build, manage and run complex technology platforms and help our clients to benefit from our work and creativity.   

Senior Performance Engineer needed to join our team on a permanent basis, here at VML Enterprise Solutions.

The opportunity:

The individual 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 VML Enterprise Solution’s broad client base.   

What you’ll get to do:

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. 

What you shoud have:

• Knowledge & experience in performance testing of eCommerce applications. 
• Solid experience Performance test load generation using JMeter. 
• Previous knowledge of working within an Agile environment. 
• Knowledge of Application Monitoring Tools such as DynaTrace, AppDynamics or NewRelic. 
• Hands on experience performance problem determination and root cause analysis. 
• Good knowledge and proven experience working on Linux and cloud (AWS or Google) environments. 
• Experience tuning highly scalable applications, including reviewing configurations around cache sizes and heap sizes. 
• Experience interpreting and analysing real user monitoring statistics (RUM). 
• 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 performance issues in live systems. 
• Very good backend testing skills – conversant in databases (DB2, Oracle), SQL knowledge, use of DB Visualiser or other tools. 
• Competent in logging identified issues and tracking them through to resolution. 
• Highly organized and owns their own deadlines, willing to go above and beyond what was promised to deliver quality service. 
• Excellent interpersonal skills and a proven ability to collaborate with all stakeholders. 
• Desire to learn and grow, the role will be constantly changing allowing exposure to different technologies and tools. 

You will collaborate with our UK project team, so we’ll need you to be available until 18:00 PL time.

Bonus points if you have:

• Ecommerce platform expertise and experience performance testing and analysis on IBM WebSphere Commerce, SAP Hybris or Magento and SOLR, Fredhopper or other search services. 
• Experience setting up performance monitoring using Grafana, APMS or other tooling. 
• Experience implementing performance testing in a continuous delivery environment. 
• Scripting (perl, awk, python etc.) 
• Exposure to Java or PHP 
• Experience with Apache Tomcat, JBoss 
• Experience with other load generation tools eg LoadRunner, CloudTest or NeoLoad  
• Experience in front end page load analysis and profiling and optimisation using Webpagetest, Pagespeed, Speedcurve, sitespeed.io or other tools. 

What we offer:

• Salary depending on presented skills: 21 800 - 30 000 PLN net on B2B contract
• Fully remote job as well as possibility to visit ourr offices in Poznań, Katowice and Bydgoszcz 
• Work equipment with delivery to your door 
• Opportunity to work with some of the most exciting brands around the world 

Please note that this job is a full-time position located in Poland, but the selection process will be conducted in English. 

Please send over your CV in English. 

We are a part of VML Enterprise Solutions. Learn more about our us on dedicated social media: Instagram VML Enterprise Solutions, our LinkedIn page and YouTube channel. 

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At VML, we are committed to fostering an all-inclusive work environment that is both rewarding and career-forward. Our Inclusion, Equity & Belonging initiatives, alongside the VML Foundation, reflect our dedication to giving back and making a positive impact in our communities and beyond. Our people are the heartbeat of our organization—creators, doers, innovators, makers, and thinkers—who drive not just marketing, but meaningful experiences that resonate in every action and interaction. 

VML is a WPP Agency. For more information, please visit our website, and follow VML on our social channels via Instagram, LinkedIn, and X. 

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