Vanderbuild is a GTM engineering agency. We find your future clients through outbound, combining data, AI and human insight and we orchestrate the CRM data underneath, so qualified leads land in your pipeline and stay clean, segmented and ready to close. Founded by Mateusz Sekta, our team builds systems across the full customer journey, from first touch to expansion.
The work splits into two parts.
Outbound - volume campaigns, micro campaigns and signal-based campaigns, from market and data analysis through to reaching decision makers, validating sales hypotheses and booking meetings.
CRM data automation - we clean, update and enrich your CRM, implement data orchestrators, score and segment leads, and connect inbound data with automated outbound
We are Clay Cup Vice Champions, ranked #2 globally and #1 in Europe in GTM engineering. In 2025 we launched 250+ outbound campaigns and have built 50+ revenue engines across DACH, CEE, Benelux, the Nordics, the Baltics, UK and US markets. Every system runs inside your accounts, so when the engagement ends the work stays with you.
Vanderbuild is a B2B GTM engineering agency that becomes your outbound & gtm engineering sales department - building outbound campaigns and GTM engines that turn your total addressable market into qualified meetings.
