Work4

work4.io

San Francisco, California, United States

51-200 employees

LinkedIn Profile

About Work4

social media, recruiting, human resources, social recruiting, recruiting automation, hr reporting, hr software, candidate sourcing, hr tech, technology, enterprise software, software, information technology, software development, management consulting services, data analytics, plateforme recruteur, retail, recrutement dans l'hôtellerie-restauration, automatisation du sourcing

Work4's Tech Stack

Other

CloudFlare Hosting

Cloudflare DNS Google Apps Rackspace MailGun Remote

Email

Gmail

AI/ML

Decision Makers at Work4

2 contacts

Damien Szczyt

CTO

d***@seiza.co Sign up to view

Pierre Prat

Head of Sales

p***@seiza.co Sign up to view

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7 technologies detected · 2 decision makers · Emails available

Sales Outreach Angle

Work4 is a technology company. Software vendors, dev tools, and SaaS platforms find technology companies like this highly receptive. Use StackWho to identify the right decision-maker (CTO, VP Eng, or Head of Product) and reach out with a stack-specific pitch.

Work4's Position in the StackWho Database

• Work4 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).
• 53,147 companies in California are in the StackWho database.
• 13,765 information technology & services companies are in the 51-200 employee range (same size as Work4).

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

Frequently Asked Questions

What technology does Work4 use?

Work4 uses Cloudflare DNS, Rackspace MailGun, Gmail, Google Apps, CloudFlare Hosting, Remote, and 1 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Work4?

StackWho has verified email addresses for 2 decision makers at Work4. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Work4 directly for sales, recruiting, or partnerships.

What industry is Work4 in?

Work4 operates in the information technology & services industry, headquartered in San Francisco, California, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Work4's contact data?

Yes. StackWho Pro members can export decision maker contact data for Work4 and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.