Sebastian Rymarz

CEO & Co-founder, Heyday
San Francisco, California,United States
Find Sebastian Rymarz's Email
Find Sebastian Rymarz's Phone

Who Is Sebastian Rymarz?

Total Experience17 years
CompanyHeyday
CountryUnited States

Sebastian Rymarz is a seasoned entrepreneur and executive with a rich background spanning traditional finance and modern technology. He is the Co-founder and CEO of hey (formerly Zync), a financial technology company dedicated to building the business and banking backbone for the creator economy. Before embarking on his entrepreneurial journey with hey, Sebastian served as the Chief Business Officer at Fundbox, where he played a pivotal role in scaling the B2B fintech platform. His career began on Wall Street, where he honed his financial acumen as an investor at the global private equity firm TPG and as an investment banker at Goldman Sachs. This diverse experience has equipped him with a unique perspective on building and scaling innovative companies at the intersection of finance and technology.

Sebastian Rymarz LinkedIn pageCompany Website

How Did Sebastian Rymarz's Career Path Shape Their Journey?

Sebastian Rymarz's work history includes a series of influential roles in various companies. Here is a detailed list of his professional journey:

Heyday - CEO & Co-founder(2020 to Present)
Fundbox - Chief Business Officer(2017 to 2020)
TPG Sixth Street Partners - Vice President(2011 to 2014)
Sageview Capital - Associate(2009 to 2011)
Goldman Sachs (Investment Banking Division) - Analyst(2007 to 2009)

What Are Sebastian Rymarz's Key Achievements?

Co-founder & CEO of hey

Co-founded and leads hey, a financial platform designed to empower creators by providing them with tools for banking, tax management, and business incorporation. He successfully led the company through a significant seed funding round to accelerate its mission.

Leadership in Fintech at Fundbox

As Chief Business Officer at Fundbox, a leading B2B fintech company, he was instrumental in driving the company's growth, strategic partnerships, and overall business strategy, contributing to its significant scaling.

Successful Career in High Finance

Established a distinguished career in finance, starting as an investment banker at Goldman Sachs and later as an investor at TPG, one of the world's leading private equity firms, where he evaluated and managed large-scale investments.

What's Sebastian Rymarz's Educational Background?

Bachelor of Science, Engineering Physics

University of Illinois Urbana-Champaign

Buying Intent Signals for Sebastian Rymarz

Highperformr Signals uncover buying intent and give you clear insights to target the right people at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance

Company Overview

Heyday
Total employees35
HeadquartersSan Francisco
Founded2021

Heyday is an AI-powered research assistant and knowledge management tool designed to enhance human memory. Operating as a browser extension, it automatically saves and organizes web pages, articles, and documents that users view. When a user conducts a Google search or writes a new document, Heyday intelligently resurfaces relevant content from their past browsing history, helping them connect ideas, recall information, and build upon their existing knowledge without manual organization.

Company Website
Heyday Funding Information
Unknown - Total Funding Raised
$6.5M - Most recent funding amount
2 - Number of funding rounds
17 Aug, 2022 - Latest funding round
Lead Investors:
Spark Capital
Gradient Ventures
Abstract Ventures
Converge
Packy McCormick

Highperformr's free tools for company research

Find contact info

Get verified emails, phone numbers, and LinkedIn profile details

Find similar contacts

Discover contacts with similar roles, seniority, or companies

Perform deep contact research

Uncover insights like skills, work history, social links, and more

Discover, research and enrich contacts with Highperformr — Smarter, Faster

Explore contacts in-depth — from verified emails and phone numbers to LinkedIn activity, job changes, and more — all in one powerful view.

Highperformr AI helps you surface the right people and enrich your CRM with live, accurate contact insights so your teams can connect faster and close smarter.

  • Track signals like job change, promotion, and LinkedIn activity
  • Enrich contacts with verified email, phone, and social data instantly
  • Automate enrichment and updates with powerful workflows
  • Sync enriched contact info directly into your CRM and tools

Thousands of contacts — including decision-makers, influencers, and ICP matches — are just a search away.

Intent Signals

Buyer intent signals

CRM Enrichment

Contact Enrichment

Workflows and tasks

Workflows and tasks

Integrations

Integrations

Thousands of companies, including, are just a search away.