Short History

  1. Co-founders Balint & Sami integrated Entrepreneur First's 11th cohort in London

    Balint Bertok + Sami Jazmati

  2. Started working on a Quantitative Product Testing tool

  3. Company officially incorporated

  4. First corporate client signed for a pilot

Our Team


Meet our small team that works hard on our great company.

Balint Bertok
Balint Bertok
Co-Founder & CEO

Balint is a deep technology enthusiast, with extensive experience in helping big brands launch new products through data-driven marketing. He launched a digital consulting firm called OptimAd.io in 2017 alongside Sami Jazmati. Wanting to pivot into a more scalable SaaS model, they joined Entrepreneur First's 11th cohort in London where they started building Quantest.
In his free time, Balint enjoys coding and debating the benefits of A.I.

Balint did his undergrad at ESSEC Business School, completed with postgraduate studies in Entrepreneurship at the University of Cambridge.


Sami Jazmati
Sami Jazmati
Co-Founder & CTO

Sami worked in data, software, and product for years before joining Balint to build OptimAd.io in 2017, where he spearheaded the A/B testing and the behavioural analysis efforts of the company. When it came to pivot into a pure software solution, he integreated Entrepreneur First's 11th cohort in London alongside Balint where they started building their quantitative product testing platform Quantest.

Sami did his master in Engineering at HEI with a specialisation in Computer Science, followed by his MSc in Applied Finance at ESSEC Business School.