What technologies does System One use?

System One uses Sendgrid, Gmail, Google Apps, MailChimp SPF, Microsoft Office 365. View their full technology stack — including all 20 detected tools — on StackWho.

Who is the Co Founder of System One?

Bartho Valk is the Co Founder at System One. Get verified contact information on StackWho.

Where is System One located?

System One is based in Berlin, Berlin, Germany.

System One

systemonesoftware.com

information technology & services

systemonesoftware.com

Berlin, Berlin, Germany

1-10 employees

LinkedIn Profile

About System One

web applications, software as a service, booking agencies software, music, productivity software, event planners, party planners, consumer internet, internet, information technology, data security, event planning, payment processing, integrations, agency software, data management, artist booking, team collaboration, software publishing, multi-language support

System One's Tech Stack

AI/ML

Decision Makers at System One

1 contact

Bartho Valk

Co Founder

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

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20 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.

System One's Position in the StackWho Database

• System One 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).
• 5,207 companies in Berlin are in the StackWho database.
• 97,391 information technology & services companies are in the 1-10 employee range (same size as System One).

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 System One use?

System One uses Sendgrid, Gmail, Google Apps, MailChimp SPF, Microsoft Office 365, Amazon AWS, and 14 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at System One?

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

What industry is System One in?

System One operates in the information technology & services industry, headquartered in Berlin, Berlin, Germany. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export System One's contact data?

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