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Lead Performance Engineer (6 months)

VML Enterprise Solutions

Department: Technology

Expertise: Technology

Location: Poznań, Poland

Requisition ID: 8264 - 1

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.   

The Lead Performance Engineer plays a critical role in ensuring the performance, scalability, and reliability of our innovative platform project that provides holistic AI solutions to our internal and external audiences. This role demands a highly motivated and experienced individual with a deep understanding of performance testing methodologies, tools, and analysis. The Lead Performance Engineer will be responsible for driving the performance testing strategy, mentoring junior team members, and collaborating with cross-functional teams to identify and resolve performance bottlenecks. This individual will also be instrumental in researching and implementing new performance testing tools and techniques to continuously improve our performance engineering practices.

What you’ll get to do:

  • Project Leadership: Support and drive the direction of performance testing projects, focusing on the overall strategy and execution.
  • Test Planning & Modelling: Develop comprehensive performance test plans, including defining test scenarios, workload models, and success criteria.
  • Mentorship: Mentor and guide junior performance testers, providing technical guidance and fostering their professional development.
  • Tool Evaluation & Improvement: Analyse existing performance testing tools and processes, identify areas for improvement, and recommend/implement new tools and technologies.
  • Performance Scripting & Analysis: Define, create, and execute performance test scripts using JMeter and other relevant tools. Analyse test results, identify performance bottlenecks, and provide detailed recommendations to the development team for resolution.
  • Architecture & Component Analysis: Understand the application architecture, its various components, and their interactions to effectively identify potential performance issues.

What you should have:

  • Performance Testing Tools: Extensive experience with JMeter, K6 or Locust for load generation or other tools like LoadRunner.
  • Scripting Python: Including a good understanding of profiling, ability to review source code and recommend optimisations.
  • Agile Methodology: Experience leading within an Agile development environment.
  • Application Monitoring: In-depth knowledge of application monitoring tools such as Data Dog, Dynatrace, AppDynamics, or New Relic.
  • Performance Analysis & Root Cause Determination: Demonstrated ability to identify and diagnose performance problems, conduct root cause analysis, and recommend solutions.
  • Cloud & Linux Environments: Strong working knowledge of Linux and cloud platforms (AWS or Google).
  • Application Tuning: Experience tuning highly scalable applications, including optimising cache sizes, heap sizes, and other relevant configurations.
  • Real User Monitoring (RUM): Experience interpreting and analysing RUM statistics to understand real-world performance.
  • Load Forecasting & Resilience Assessment: Ability to forecast load for peak times, assess system resilience, and recommend improvements based on business needs.
  • Live System Analysis: Experience pinpointing performance issues in live production systems.
  • Backend Testing: Strong backend testing skills, including database knowledge (DB2, Oracle), SQL proficiency, and experience with DB Visualizer.

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

Bonus points if you have:

  • Performance Monitoring Setup: Experience setting up performance monitoring using Grafana, APMs, or other tooling.
  • Experience with Locust
  • E-commerce Expertise: Proven experience in performance testing and analysis of e-commerce applications, preferably with platforms like IBM WebSphere Commerce, SAP Hybris, or Magento.
  • Continuous Delivery Integration: Experience implementing performance testing in a continuous delivery environment.
  • Development Languages: Exposure to Java or PHP.
  • Frontend Performance Analysis: Experience with front-end page load analysis, profiling, and optimization using tools like WebPageTest, PageSpeed Insights, SpeedCurve, or sitespeed.io.

What we offer :

  • Salary depending on presented skills: 25 000 - 34 000 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. 

#LI-EMEA #LI-BD1  #LI-HYBRID #LI-AS1

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. 

When you click "Submit Application", this will send any information you add below to VML. Before you do this, we think it's a good idea to read through our Recruitment Privacy Policy. California residents should read our California Recruitment Privacy Notice. This explains what we do with your personal data when you apply for a role with us, and, how you can update the information you have provided us with or how to remove it.

When you click "Submit Application", this will send any information you add below to VML. Before you do this, we think it's a good idea to read through our Recruitment Privacy Policy. California residents should read our California Recruitment Privacy Notice. This explains what we do with your personal data when you apply for a role with us, and, how you can update the information you have provided us with or how to remove it.