Fundraising Fox
/Companies
Sign in

Tandem

DefunctYC S19

San Francisco, US · Founded 2018 · 10 employees · 17 known investors

Find your way into Tandem

Sign up to see every warm intro you have to Tandem

  • Paths you didn't know you had: your email and LinkedIn already hold routes to the Tandem team. We find them for you
  • 2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
  • Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Sign up with GoogleAlready have an account? Log in

Tandem provides software that gives remote teams visibility into each other's availability and current work context, with integrated communication tools for instant messaging, screen sharing, and video calls.

Also known as Cryptagon, Inc. · Tandem Communications, Inc · Tandem (formerly Wisp) · Wisp · Wisp, Tandem (formerly Wisp)

Enterprise SoftwareFuture of WorkSaaSCollaborationUnited States of AmericaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (S19)

Tandem was founded in 2018 by Rajiv Ayyangar, Bernat Fortet Unanue, and Tim Su.

RARajiv Ayyangar
Rajiv AyyangarFounder2018–2022Rajiv Ayyangar is CEO at Product Hunt. He previously served as CEO and co-founder of Tandem, a remote team collaboration platform; earlier roles include product manager at Delectable and data scientist at Aviate (acquired by Yahoo). He holds a degree in Bioengineering from Princeton.
BFBernat Fortet Unanue
Bernat Fortet UnanueFounderuntil 2022Bernat Fortet Unanue founded Restoration Scope, which builds operational data systems for nature restoration and reforestation projects, working with organizations including One Tree Planted, One Acre Fund, and Living Carbon across Africa, South America, and North America.
TSTim Su
Tim SuFounderuntil 2022He has previously built products focused on organization and team collaboration.
VC
Vivy ChaoTechnical Recruiter
AKAkash Kashyap
Akash KashyapSenior Software Engineer / Product Manager2021–2022Founder at Dialtone

Investors · 17

Abstract VenturesreportedSan Francisco · $250K – $750K

How we know: Y Combinator's founder network · Not right? Tell us

AccelreportedPalo Alto · $500K – $100M

How we know: funding news · press coverage · Y Combinator's founder network · Not right? Tell us

Andreessen HorowitzreportedMenlo Park · $500K – $50M

How we know: Y Combinator's founder network · Not right? Tell us

Firebolt Ventures Management Company, LlcreportedPalo Alto

How we know: Y Combinator's founder network · Not right? Tell us

General CatalystreportedSan Francisco · $30M

How we know: funding news · press coverage · Not right? Tell us

ICON FoundationreportedZug

How we know: Y Combinator's founder network · Not right? Tell us

James Beshara FundreportedVenice

How we know: Y Combinator's founder network · Not right? Tell us

LINE Venturesreported

How we know: Y Combinator's founder network · Not right? Tell us

Liquid VenturesreportedSan Francisco · $250K – $5M

How we know: Y Combinator's founder network · Not right? Tell us

Shasta VenturesreportedMenlo Park · $250K – $6M

How we know: the VCSheet dataset · Not right? Tell us

Shasta Venturesreported

How we know: Y Combinator's founder network · Not right? Tell us

Shrug CapitalreportedSunnyvale · $100K – $3M

How we know: Y Combinator's founder network · Not right? Tell us

SV AngelreportedSan Francisco · $150K – $20M

How we know: Y Combinator's founder network · Not right? Tell us

Thrive CapitalreportedNew York · $500K – $25M

How we know: press coverage · Not right? Tell us

Twenty Two VenturesreportedPalo Alto · $50K – $250K

How we know: Y Combinator's founder network · Not right? Tell us

Worklife VenturesreportedWalnut · $500K – $2M

How we know: Y Combinator's founder network · Not right? Tell us

The YC application· Summer 2019 batch

▶ Demo Day video — watch on YC ↗

Founder mafia

4 people who came through Tandem went on to found or lead other companies.

Rajiv AyyangarFounderFounded Tandem +1Akash KashyapSenior Software Engineer / Product ManagerFounded DialtoneBernat Fortet UnanueFounderFounded TandemTim SuFounderFounded Tandem

Related companies · 10

BetterUpBetterUp provides an AI-powered coaching and professional development platform that helps organizations support employee growth and wellbeing. The platform serves enterprises and their employees through behavioral science-backed coaching and talent management tools.
SliteSlite provides a knowledge base platform designed for team collaboration and information organization. In 2025, the company expanded into AI-powered search and workflow automation through its Super product.
AsanaAsana is a collaborative work management platform that helps teams align work to goals, coordinate tasks, and automate processes using AI-powered workflows. The platform serves organizations of all sizes seeking to improve productivity, visibility, and execution across teams and departments.
CocoonCocoon provides technology to simplify leave management for employees and employers, handling leave compliance, insurance claims, and payroll administration in the United States.
SimpplrSimpplr provides an employee experience platform that consolidates internal communications, information sharing, and collaboration tools into a single workspace, helping organizations improve employee engagement and productivity across distributed teams.
QuoQuo is a cloud-based business communication platform that provides a modern phone system for small businesses to connect with customers and manage relationships. The product targets small business owners who need professional communication tools to scale operations and compete effectively.
AtlassianAtlassian offers a teamwork platform combining project planning, knowledge management, and AI orchestration tools for teams and their AI agents. Its products help organizations plan, execute, and deliver work at scale.
BeeperBeeper is a unified messaging app that consolidates popular messaging services into a single cross-platform interface. It supports Android, iPhone, iPad, ChromeOS, macOS, Windows, and Linux, with optional paid features for power users managing multiple accounts.
BlinkBlink provides a unified mobile communications platform designed for frontline workers who lack traditional corporate email and desk access. The platform enables two-way communication, content management, and collaboration for distributed workforces across industries like healthcare and retail.
MemoMemo is a communication platform designed for professionals seeking focused, intentional messaging as an alternative to email and chat tools. It emphasizes high-value messages to reduce noise and help users reclaim time from constant notifications.

Companies working in the same space as Tandem.

Legal entities · 2

corporate structure
Cryptagon, Inc.
Tandem Communications, Inc

In the news

Tandem sketches out a remote-friendly hybrid work future – TechCrunchtechcrunch.com · Apr 2022Fresh out of Y Combinator, Tandem lands millions from Andreessen Horowitz – TechCrunchtechcrunch.com · Aug 2019

Frequently asked questions

What does Tandem do?
Tandem provides software that gives remote teams visibility into each other's availability and current work context, with integrated communication tools for instant messaging, screen sharing, and video calls.
Who founded Tandem?
Tandem was founded by Rajiv Ayyangar, Bernat Fortet Unanue, Tim Su in 2018.
Who are Tandem's investors?
Tandem's investors include Y Combinator, Abstract Ventures, Accel, Andreessen Horowitz, Firebolt Ventures Management Company, Llc, General Catalyst, ICON Foundation, James Beshara Fund and 9 more.
Where is Tandem headquartered?
Tandem is headquartered in San Francisco, US.