What technologies does Upsiders use?

Upsiders uses Outlook, Microsoft Office 365, Mobile Friendly, Nginx, Google Tag Manager. View their full technology stack — including all 8 detected tools — on StackWho.

Who is the Partner en founder of Upsiders?

Frank Roos is the Partner en founder at Upsiders. Get verified contact information on StackWho.

Where is Upsiders located?

Upsiders is based in Rotterdam, South Holland, Netherlands.

Upsiders

Q: What industry is Upsiders in?

Upsiders operates in the marketing & advertising industry.

upsiders.nl

marketing & advertising

upsiders.nl

Rotterdam, South Holland, Netherlands

1-10 employees

LinkedIn Profile

About Upsiders

branding, identiteit, positionering, communicatie strategie, advertising services, customer engagement, content creation, activaties, brand strategy, merkrstrategie, campagneontwikkeling, city branding, strategisch advies, content management, stad branding, community engagement, lokale betrokkenheid, advertising and marketing, visuele identiteit, contentstrategie

Upsiders's Tech Stack

Decision Makers at Upsiders

1 contact

Frank Roos

Partner en founder

f***@roos-vandewerk.nl Sign up to view

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8 technologies detected · 1 decision maker · Emails available

Sales Outreach Angle

WordPress as a CMS signals a content-driven or SMB digital presence. SEO tools, hosting solutions, and page-builder plugins are natural fits for outreach.

Upsiders's Position in the StackWho Database

• Upsiders is 1 of 80,546 marketing & advertising companies tracked in StackWho.
• 80,503 marketing & advertising companies in our database have verified decision-maker emails (100% of the cohort).
• 2,034 companies in South Holland are in the StackWho database.
• 56,565 marketing & advertising companies are in the 1-10 employee range (same size as Upsiders).

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 Upsiders use?

Upsiders uses Outlook, Microsoft Office 365, Mobile Friendly, Nginx, Google Tag Manager, YouTube, and 2 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Upsiders?

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

What industry is Upsiders in?

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

Can I export Upsiders's contact data?

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