What technologies does sizeless (YC S23) use?

sizeless (YC S23) uses Gmail, Google Apps, Mobile Friendly, Google Workspace, Looker. View their full technology stack — including all 34 detected tools — on StackWho.

Who is the Co-Founder of sizeless (YC S23)?

Roger Belsunce is the Co-Founder at sizeless (YC S23). Get verified contact information on StackWho.

Where is sizeless (YC S23) located?

sizeless (YC S23) is based in San Francisco, California, United States.

sizeless (YC S23)

sizeless.co

information technology & services

sizeless.co

San Francisco, California, United States

1-10 employees

LinkedIn Profile

About sizeless (YC S23)

software development, information technology & services

sizeless (YC S23)'s Tech Stack

AI/ML

Backend

Phoenix

Project Management

Monday.com

Decision Makers at sizeless (YC S23)

1 contact

Roger Belsunce

Co-Founder

r***@sizeless.co Sign up to view

Unlock full contact details including verified emails and LinkedIn profiles

Upgrade to Pro

34 technologies detected · 1 decision maker · Emails available

Sales Outreach Angle

React-based front-ends indicate a modern web engineering stack. Developer tools, component libraries, testing frameworks, and design systems are relevant sales angles.

sizeless (YC S23)'s Position in the StackWho Database

• sizeless (YC S23) 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.
• 97,391 information technology & services companies are in the 1-10 employee range (same size as sizeless (YC S23)).

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 sizeless (YC S23) use?

sizeless (YC S23) uses Gmail, Google Apps, Mobile Friendly, Google Workspace, Looker, Tailscale, and 28 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at sizeless (YC S23)?

StackWho has verified email addresses for 1 decision maker at sizeless (YC S23). Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach sizeless (YC S23) directly for sales, recruiting, or partnerships.

What industry is sizeless (YC S23) in?

sizeless (YC S23) 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 sizeless (YC S23)'s contact data?

Yes. StackWho Pro members can export decision maker contact data for sizeless (YC S23) and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.