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System1 Group

System1 Group

Updated March 2025.

About System1 Group

Company Overview
System1 is The Creative Effectiveness Platform that drives growth for the world’s largest advertisers by harnessing the power of emotion. We help brands make confident creative decisions that deliver real business results. Our solutions, like Test Your Ad, Innovation, and Brand, lead the way in measuring emotional responses that drive impact. We value diversity, curiosity, and ambition, fostering a collaborative, high-performance culture. Our people are supported, coached, and given autonomy to shape both their careers and the business’s direction. At System1, we provide opportunities for professional development and growth, creating a thriving, inclusive environment for all.
Company Size 123 UK-based Employees
(Medium)
INDUSTRY Advertising & Marketing
CONNECT
System1 Group Head Office
London, United Kingdom
London, United Kingdom

Employee Demographics

Tenure
  • <2 years - 29%
  • 2-5 years - 33%
  • 6-10 years - 18%
  • 11-15 years - 10%
  • 16-20 years - 7%
  • Over 20 years - 3%

Company Culture at System1 Group

The employee experience below at System1 Group, compared to a typical company.

92% of employees at System1 Group say it is a great place to work*, compared to 54% of employees at a typical UK based company.
System1 Group
92%
Typical Company
54%
*Responses to the statement “Taking everything into account, I would say this is a great place to work.” vs. a typical UK company.

100%

People here are treated fairly regardless of their sexual orientation.

99%

This is a physically safe place to work.

98%

People here are treated fairly regardless of their race.

97%

I am treated as a full member here regardless of my position.

97%

Our customers would rate the service we deliver as "excellent."

Working at System1 Group

The System1 Exec team offsite: strengthening bonds, sharpening focus, and turning ideas into action for the year ahead.
We have many passionate runners dedicated to promoting wellbeing, supporting mental and physical health through fitness
Our founder, John Kearon, with the team at our company event, celebrating success and collective achievements
System1's London office is seriously pink, reflecting our bold, creative, and vibrant company culture
System1 Global Gathering 2024: Uniting teams worldwide to collaborate, innovate, and connect socially in person.

Best Workplaces Lists

Great Place To Work® is proud to recognise System1 Group on the following Best Workplaces Lists.

Interested in a career at System1 Group, or just want to know more?

To discover what sets System1 Group apart and explore relevant career opportunities, take a look at their website.

Visit Their Website

How to earn Great Place To Work Certification

Watch this pre-recorded 5-minute webinar to learn the process for earning Great Place To Work Certification™

Certification Webinar