What technologies does Firmhouse use?

Firmhouse uses DNSimple, Mailchimp Mandrill, MailJet, Postmark, Rackspace MailGun. View their full technology stack — including all 24 detected tools — on StackWho.

Who is the co-founder & CEO of Firmhouse?

Bob Jansen is the co-founder & CEO at Firmhouse. Get verified contact information on StackWho.

Where is Firmhouse located?

Firmhouse is based in Rotterdam, South Holland, Netherlands.

Firmhouse

firmhouse.com

information technology & services

firmhouse.com

Rotterdam, South Holland, Netherlands

11-50 employees

612000 revenue

LinkedIn Profile

About Firmhouse

subscriptions, recurring commerce, ecommerce, sustainability, productasaservice, technology, information & internet, logistics, apis, computer systems design and related services, b2c, sustainable growth, ai-powered lifecycle management, retail, business intelligence, local payments, customer retention, fraud protection, subscription management, product-as-a-service

Firmhouse's Tech Stack

Decision Makers at Firmhouse

1 contact

Bob Jansen

co-founder & CEO

b***@firmhouse.com Sign up to view

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24 technologies detected · 1 decision maker · Emails available

Sales Outreach Angle

HubSpot users typically run inbound-led sales motions. Products that integrate with HubSpot (email automation, CRM enrichment, ABM platforms) are natural fits.

Firmhouse's Position in the StackWho Database

• Firmhouse is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 2,034 companies in South Holland are in the StackWho database.
• 74,148 information technology & services companies are in the 11-50 employee range (same size as Firmhouse).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Firmhouse use?

Firmhouse uses DNSimple, Mailchimp Mandrill, MailJet, Postmark, Rackspace MailGun, Gmail, and 18 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Firmhouse?

StackWho has verified email addresses for 1 decision maker at Firmhouse. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Firmhouse directly for sales, recruiting, or partnerships.

What industry is Firmhouse in?

Firmhouse operates in the information technology & services industry, headquartered in Rotterdam, South Holland, Netherlands. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Firmhouse's contact data?

Yes. StackWho Pro members can export decision maker contact data for Firmhouse and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.