Our Team
Pleased to meet you!Here at Chapman Bright, we share a passion for Marketing Technology (e.g. Marketo Engage). Mostly focused on B2B and B2B2C. We are true MarTech Fanatics. Stretching the limits in knowledge, experience and the successes we can achieve with our customers. Most of our customers are in software, high-tech, energy & utilities, business services, manufacturing, logistics, and commerce. We work with a large variety of marketing- and sales technologies, but Marketo plays a prominent role for us and our customers.
Diederik Martens
CEO & Founder
Jacques van Seeters
Principal Revenue Consultant & Partner
Katja Keesom
Principal Consultant
Arjen Segers
Senior MarTech Consultant
Bas van Buuren
Senior MarTech Consultant
Bert van der Zwaan
MarTech Consultant
Paul Slikkerveer
B2B Marketing Automation & Data Consultant
Frans Lakerveld
B2B Marketing Automation Consultant
Laura Iasonna
MarTech Trainee
Lot Schoonis
Office Manager

Diederik Martens
CEO & Founder - Chief Marketing Technologist
I’m passionate about marketing technology, marketing operations, and complex B2B sales. It’s my mission to help others succeed. After my last role as Head of World Wide Marketing Operations at Quintiq, I founded Chapman Bright, previously named SMOps. It was at Quintiq that my team was awarded the international Killer Content Award for our lead nurture strategy with Marketo Engage.
I have more than a decade of Marketo experience. I’m the chairman of the official Dutch Marketo user group since 2012. I’ve been named 6x to the Marketo Champion Elite Top-50. I’ve been among the first few to ever get Marketo user certified (MCE). Currently I’m a Marketo Certified Solutions Architect (MCSA).
Marketo Engage is just one of the many marketing technologies I’m experienced and/or certified in. E.g. I also have >10 years Salesforce experience and I’m Drift certified. And I have worked with many different types of technologies (e.g. TwenthyThree, RingLead, OneInsight, Survicate, SurveyMonkey, SugarCRM, MsDynamics, PowerBI, ON24, …)
Read my bio
Jacques van Seeters
Principal Revenue Consultant & Partner
I’m passionate about MarTech and Growth Hacking. Formerly founder and director of Energiedirect and Zon-IQ.
I bring decades of business growth and start-up mentallity to the table.
I have a several years of Marketo experience. And of course I’m certified at the highest level as Marketo Certified Solutions Architect (MCSA).
My LinkedIn Page
Katja Keesom
Principal Consultant
I enjoy combining an analytical mind, a passion for customer experience and a great imagination into delivering highly relevant Marketing activities. With more than 20 years of experience in different Marketing roles, I have gained a wealth of knowledge and experience in marketing analytics.
As (PRINCE2 certified) project manager, I have been involved in delivering several international projects.
Among the projects I delivered was a large international Marketo implementation with custom integrations. It is exciting to experience first hand how Marketing Automation opens up a world of possibilities to unlock data at scale, using that to enhance customer experience and increase the amount of quality leads. My Marketo expertise has been recognized by Adobe with their highest certification of Marketo Certified Solutions Architect (MCSA). In addition, I am a Marketo Community Advisor and have contributed to redeveloping the MCE exam.
My LinkedIn Page
Arjen Segers
Senior MarTech Consultant
In the past ten years I’ve been working in international marketing positions. Starting as a marketing & communications consultant at Utrecht University I progressively grew into my last position as marketing manager for a Los Angeles-based publicly listed company. Working out of Brussels, I have covered Benelux, Germany, United Arab Emirates and the Nordics, all with a major focus on demand generation.
Already Marketo Certified, I have experienced the added value of marketing technology myself when our sales teams frequently started hopping by my desk to share the business impact of joint marketing initiatives. By then it was clear that I didn’t want to limit that value to one organization.
After joining Chapman Bright I’ve been working as a Marketo Certified Solutions Architect on large accounts, such as DHL Express and Deloitte.
My Linkedin Page
Bas van Buuren
Senior MarTech Consultant
My passion is using data and technology as the fuel to make clear decisions, which helps companies to market themselves and provide customers a good experience.
The last years I worked in several types of companies from B2B to B2C, media agencies and large enterprises. Hence, I have gained a wide knowledge of several markets and products. Within my previous roles I’ve learned how to make use of and adopting (new) technology (e.g. several years with Marketo Engage), using data, setting up online marketing strategies and always try to keep room for innovation or ‘out of the box’ ideas.
As a Marketo Certified Solutions Acrhitect (MCSA), I will use my knowledge and experience for helping out companies with the digital part of marketing and sales strategies.
My LinkedIn Page

Paul Slikkerveer
B2B Marketing Automation & Data Consultant
When the world got rid of the millennium bug, I graduated from the Erasmus University. I started to work for a big Media company digitizing catalogs. Within this company I ended up in a consultative role. I love the direct interaction with clients because it showed our value in the context of the client’s workspace.
More than a decade later I moved into a marketing operation role, supporting B2B marketeers in various capacities. Not my father, but my manager swayed me to the “dark side”. “We’ll be industrializing marketing, she said” and given the “personalization is key” mantra, I couldn’t resist. After serializing the marketing practice we got the time for pioneering programs untypical for the marketing domain. These programs blurred the line between what is sales and marketing.
Fast forwarding another decade I feel like I have gone full circle. I started out with modelling data into flows to provide seamless integrations, now data again is at the frontline. Certified to work with Marketo and Eloqua my role as consultant gives me a unique view of adoptions and implementations of Marketing Automation.
My LinkedIn Page
Frans Lakerveld
B2B Marketing Automation Consultant
With over 7 years of experience in dynamic B2B marketing environments, I specialize in crafting marketing strategies for various products and sectors. My journey into marketing automation began at Quintiq, a B2B supply chain software company, where I witnessed the transformative impact of technology within a complex marketing and sales organization.
What truly excites me about marketing automation is how it can change the interaction between companies and their target audiences. It’s not just about technology; it’s about the impact that occurs when technology and the efforts of marketing and sales teams come together..
As a certified Marketo MarTech Consultant at Chapman Bright, I’m actively involved in optimizing the utilization of marketing technology within our client projects. Whether it’s sharing best practices or implementing solutions, I look forward to supporting your teams with hands-on training and expert advice.
My LinkedIn Page
Laura Iasonna
MarTech Trainee
Originally from the south of Italy, I have always been interested in communication theories and eager to discover different cultures.
That’s why, after completing my Master’s in Global Marketing and Communication, I have moved to the Netherlands to attend the Master’s in Media Innovation at Breda University of Applied Sciences. During those years, I have had the chance to blend my passion for marketing with innovative technologies.
I’m looking forward to start my career in MarTech for Chapman Bright: a start-up that promotes my values and supports my growth.
My LinkedIn page
Lot Schoonis
Office Manager
I’m the office manager at Chapman Bright. I want to ensure that everyone at Chapman Bright has the conditions to bring out the best in themselves. Don’t just think about basic things, such as an up-to-date administration or a tidy office with working internet and sufficient paper in the printer.
Because of my personal approach and my position as ‘spider in the web’ of the organization, I want to try to get that little bit extra about the wishes and requirements of my colleagues. I then fill this with a smile on my face, knowing that through me they have the possibilities to perform their work as well as possible.
I also coordinate company events and I’m responsible for HR matters.
In short, I want to unburden and facilitate my colleagues!