Upstream (YC S23)

upstream.do

Paris, Ile-de-France, France

1-10 employees

LinkedIn Profile

About Upstream (YC S23)

technology, information & internet, async decision-making, structured messaging, structured inbox, thread summaries, software as a service, information technology and services, team alignment, team collaboration, async communication templates, threaded conversations, task management, asynchronous workflows, channel organization, productivity tools, notifications control, internal communication best practices, context centralization, b2b

Upstream (YC S23)'s Tech Stack

9 technologies detected · 2 decision makers · Emails available

Sales Outreach Angle

AWS infrastructure signals engineering sophistication. This company likely evaluates cloud cost management, security tooling, observability, and developer productivity solutions.

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

• Upstream (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).
• 12,711 companies in Ile-de-France are in the StackWho database.
• 97,391 information technology & services companies are in the 1-10 employee range (same size as Upstream (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 August 2026.

Frequently Asked Questions

What technology does Upstream (YC S23) use?

Upstream (YC S23) uses Route 53, Gmail, Google Apps, Amazon AWS, Google Tag Manager, Mobile Friendly, and 3 more technologies. This data is sourced from StackWho's technology detection engine.

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

StackWho has verified email addresses for 2 decision makers at Upstream (YC S23). Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Upstream (YC S23) directly for sales, recruiting, or partnerships.

What industry is Upstream (YC S23) in?

Upstream (YC S23) operates in the information technology & services industry, headquartered in Paris, Ile-de-France, France. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Upstream (YC S23)'s contact data?

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