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Zellis
Building Capability at the Core of Payroll and HR Services
As a leading provider of payroll and HR solutions in the UK and Ireland, Zellis operates in a domain where accuracy, compliance, and service consistency are critical. Our engagement brought us into teams focused on strengthening internal problem-solving capabilities, improving process alignment, and supporting a culture of continuous improvement across operations. The commitment to excellence in delivery was matched by a clear intent to invest in scalable internal capability.
It was a privilege to work with professionals who brought diligence and purpose to every initiative. Their openness to structured thinking and collaborative improvement made this engagement both impactful and future-focused.
Testimonials for Benchmark Six Sigma
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Amalraj Nagaraj
Senior Associate – Data analysis & Visualization, RR Donnelley
Analytical Component Thorough and Insightful
“I was particularly impressed by the analytical component of the course, which was thorough and insightful.”
Lean Six Sigma Green Belt
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Nathiya
Senior Analyst, Computer Age Management Services (CAMS)
Clear and Straightforward Structure Facilitated Understanding
“The course was structured in such a way that all topics were clear and straightforward, which facilitated a deeper understanding of Six Sigma.”
Lean Six Sigma Green Belt
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Sonakshi Khuntia
Senior Team Lead, S&P Global
Exceptional Trainer with Noteworthy Teaching Style
“The trainer was exceptional. The knowledge and teaching style of Mr. Vishwadeep Khatri were particularly noteworthy.”
Lean Six Sigma Black Belt
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Sujay Tambaku
Vice President – Operations, Consul Neowatt Power Solutions Private Limited
Tough Topic Made Interesting in Great Session
“Great session! A tough topic handled in nice manner to make it interesting. Happy with overall Benchmark experience.”
Lean Six Sigma Green Belt
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Gaurav Agrawal
Senior Manager, Corning Technologies India Private Limited
Excellent Course Content with Insightful Training
“The course content was excellent and the training provided by the trainer was insightful.”
Lean Six Sigma Green Belt
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Balan Ramasamy. R
Sr.Engineer, Sanmina Corporation
Detailed Explanation of Green Belt Concepts
“The Green Belt concepts were explained in detail, showing me how to use these methodologies effectively in my organization.”
Lean Six Sigma Green Belt
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Udayakumar.K
Assistant Manger, Sanmina Corporation
Detailed Hypothesis Analysis Aided Application
“The segment on hypothesis analysis was detailed and insightful, aiding in the application of statistical analysis.”
Lean Six Sigma Green Belt
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Shweta Sharma
Associate Director, Covance
Excellent Teaching Method Made Concepts Easy to Grasp
“The teaching method was excellent, offering clear, controlled content that made it easy to grasp the concepts of Six Sigma.”
Lean Six Sigma Green Belt

