A specialist Salesforce consultancy built for direct, senior-led delivery.
SummitFlow Consulting B.V. is an independent Salesforce consultancy based in the Netherlands, founded by Marc van Rossum. It exists for organisations that want direct access to senior architectural expertise — without the overhead or unnecessary account-management layers of a large implementation firm.
Marc van Rossum
Founder and senior architectural lead.
Marc founded SummitFlow after a career spanning Big Four consulting and enterprise Salesforce delivery. He is a certified Salesforce Application Architect with specialist credentials across platform architecture, development lifecycle, data, sharing, Agentforce and Data 360. He leads every engagement personally and remains directly involved from initial scope through delivery — bringing in trusted specialists only where an assignment genuinely needs the extra capacity or expertise.
Salesforce Partner · Select tier
A consistent senior lead, supported by the expertise the assignment requires.
Every engagement has a consistent senior architectural lead — Marc van Rossum — who stays directly involved and accountable from initial scope through delivery. Where additional capacity or specialised expertise is required, he brings together a small, trusted team of experienced consultants and developers around the assignment, rather than routing work through account-management layers.
Independent
SummitFlow is not tied to a systems integrator, a reseller margin or a fixed methodology. Recommendations are made on technical merit.
Clearly accountable
Every engagement has a clearly accountable senior lead who remains involved from initial scope through delivery. Additional specialists are introduced deliberately and work within the agreed architecture and delivery approach.
Practical
The goal is a solution your team can run and extend, not a showcase of every feature the platform offers.
Organisations with real Salesforce complexity.
SummitFlow works best with mid-sized and larger organisations that are implementing Salesforce, running a multi-cloud landscape, integrating it into a broader technology estate, or trying to understand why an existing implementation isn't delivering what was promised. If that describes your situation, an introductory call is the right next step.
Plan an introduction
Tell me about the platform, the problem and the timeline. I'll respond directly, usually within one business day.