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Team

Cohesion and trust

Our culture is rooted in transparency, so we are open with each other - with a strong bond as a result.

Who we are

  • We are small and we like it that way.
  • We choose to do one thing and do it right.
  • We apply Occam’s Razor in all our solutions.
  • We do something because it makes sense.
  • We treat others like we want them to treat us.

If all else fails, we flip a coin.

  • Sander Nagtegaal

    Sander Nagtegaal

    CEO and co-founder

    Sander is CEO and co-founder of Unless, the AI platform for customer success in Europe’s regulated sectors. He previously served as CTO at several other companies, like myTomorrows, Sumis, and Peecho - which he also co-founded.

    Living in the city center of Amsterdam, he trains every day in several different martial arts, and teaches a weekly kung fu class.

  • Marcel Panse

    Marcel Panse

    CTO and co-founder

    As a CTO and co-founder, Marcel leverages his experience as Chief Architect at Peecho and several other start-ups, like Albumprinter and myTomorrows.

    When he doesn't try to solve complex problems with elegant solutions, he loves to climb rocks or spend time with his family.

  • Ecesu Erol

    Ecesu Erol

    CXO

    As a CXO, Ecesu works at the intersection of marketing, sales, and product. She’s all about helping businesses deliver exceptional product experiences that delight their customers.

    She is passionate about diversity in tech and loves to spend time with a book and a cup of coffee.

  • Alexandre Moreau-Lemay

    Alexandre Moreau-Lemay

    Lead AI Engineer

    Alexandre is a software developer with a passion for creating innovative solutions and delivering quality software. Based in Arnhem, a city close to the stunning Veluwe nature reserve, he is inspired by the natural beauty that surrounds him and takes every opportunity to explore the outdoors.

    When he's not busy developing software, Alexandre enjoys landscape photography, hiking, and traveling.

  • Martijn Groot

    Martijn Groot

    Chief Commercial Officer

    Martijn, a long-time friend of Marcel and Sander, leads the commercial operations at Unless. He has previously played key roles in accelerating companies such as Tele2, Metro, Albelli, Peecho, and Recharge.

    He is a passionate, energetic, result-driven entrepreneur, and an engaged team-player who helps companies scale up rapidly.

  • Gray Lewis

    Gray Lewis

    Lead Fullstack Developer

    Gray is a full stack software engineer with a passion for building highly performant applications that feel great to use. He’s had a lifelong love of coding and has a long history working at startups.

    He was born in Pennsylvania, but spent most of his childhood living in Cairo, Egypt. His hatred for car-centric city planning brought him to the Netherlands for university, and he’s been living in Rotterdam ever since. Outside of software, Gray spends most of his time bouldering and making music.

  • Antonin Remy

    Antonin Remy

    Senior business development representative

    With extensive experience in GTM strategy, customer relations, and sales team management, Antonin is often described as a quiet force—thoughtful, social, and enthusiastic, always seeing projects through to success with an optimistic outlook.

    When he's not enthusiastically reaching out to leads, you can find him sipping a hot drink while reading a history book or cooking delicious dishes for his friends and family.

Frequently asked questions

The Unless leadership team includes CEO Sander Nagtegaal and CTO Marcel Panse, supported by leaders in customer experience, product, and commercial operations. Together they bring experience in building SaaS platforms, AI products, and enterprise solutions for regulated markets.

The Unless team has worked with financial institutions, insurers, pension providers, and other regulated organizations across Europe. This experience shapes how the platform handles privacy, governance, and integrations so that AI assistants can be deployed safely in high-stakes customer success environments.

The Unless team works with customers as long-term partners, helping them design, launch, and evolve AI use cases across acquisition, retention, sales expansion, and support. Product, success, and engineering specialists collaborate with customer stakeholders to align AI initiatives with business goals and compliance requirements.

Yes, Unless is supported by an advisory board of seasoned professionals from technology, finance, and marketing. Advisors include former leaders from organizations such as Google and Goldman Sachs, who provide guidance on strategy, governance, and scaling AI for customer success in regulated markets.

Unless promotes a culture that combines technical excellence with empathy for customers and front-line teams. The company focuses on building AI that fits into real workflows, supports human decision-making, and respects the constraints of regulated industries, rather than chasing novelty for its own sake.

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