Mattermost

Secure Collaboration for Technical Teams

mattermost.com

HQ: Palo Alto, CA, USA; Remote

51-200

B2B

Company research

Public company, workplace, funding, and market signals

Updated Jul 29, 2026

Overview

Mattermost is a remote-first, open-core secure collaboration and AI automation platform for mission-critical work, especially in government, defense, and critical infrastructure. Public sources describe it as founded in 2015 (though some directories list 2016), headquartered in Palo Alto, and built for self-hosted, private-cloud, and air-gapped deployments.

Primary product

Mattermost secure collaboration platform (Channels/Playbooks/Agents with enterprise and sovereign deployment options)

Founded

2015

Headquarters

2100 Geng Road, Suite 210, Palo Alto, California 94303, USA

Team size

51-200 employees

Work style

Remote

Industry

Software Development

Sub-industry

Business instant messaging / collaboration software

Offices

Palo Alto, California, USA — 2100 Geng Road, Suite 210

Reston, Virginia, USA — 11921 Freedom Drive, Suite 550

Canberra, Australia — 15 Moore Street

Toronto, Canada — 200 Bay St, North Tower Suite 1200

Tokyo, Japan — Shibuya Dogenzaka Tokyu Building 2F-C

Amsterdam, Netherlands — Piet Heinkade 55

Stockholm, Sweden — Olof Palmesgata 29, 4th Floor

London, UK — News Building, 3 London Bridge Street

Business model

open-core software

self-hosted enterprise subscriptions

single-tenant cloud-managed SaaS

seat-based annual licensing

commercial support and paid enterprise tiers

Funding

Stage

Series B

Total raised

$73.6M

Latest round

Incubator/Accelerator · Nov 2023

Series B

Jun 2019 · Y Combinator Continuity

$50M

Series A

Feb 2019 · Redpoint Ventures

$20M

Seed

Feb 2017 · S28 Capital

$3.5M

Accelerator/Incubator

Aug 2012

$120K

People & investors

Leadership

Ian Tien

CEO & Co-Founder

Corey Hulen

CEO of Mattermost Federal, Inc. & Co-Founder

Adam Enterkin

Chief Revenue Officer

Jason Blais

VP Product & NATO Alliances

Pavel Zeman

SVP Engineering & Security

Daniel Schalla

VP Infrastructure & Security

James Mullins

VP Sales, EMEA & APAC

Matt Mandrgoc

VP Sales, US Federal Sales

Leigh Dow

Chief Marketing Officer

Lane McFarland

Chief People Officer

Kendra Niedziejko

Chief Financial Officer

Nirosha Ruwan

VP Legal

Linda Dalenberg

VP Corporate Controller

Investors

Battery Ventures

Flexcap Ventures

HNVR Technology Investment Management

Redpoint Ventures

S2 Capital

S28 Capital

Small Business Innovation Research Awards

World Economic Forum Global Innovator Community

Y Combinator

Work & culture

High-trust, remote-first, results-focused, documentation-heavy, and open-source oriented; the company emphasizes courtesy, transparency, ownership, and earning trust.

Work style

Remote

Compensation

No public salary bands were found. Public recruiting materials emphasize transparent leveling, 360-style performance reviews, flexible hours, and remote-first work; disclosed pay-related signals are home-internet and professional-development reimbursements.

Benefits

remote-first work

flexible hours

$50/month home internet reimbursement

up to $500/year professional development reimbursement

reimbursement for flexible office space

Product & market

Pricing

Seat-based annual subscriptions for paid tiers (Professional, Enterprise, Enterprise Advanced), with free evaluation/entry options and self-hosted or cloud-managed deployment choices.

Differentiators

—open-core and customizable source code
—self-hosted, private-cloud, and air-gapped deployment options
—data sovereignty and compliance focus
—built for mission-critical / defense / critical infrastructure workflows
—deep integrations and workflow automation
—single-tenant and on-prem deployment control
—supports secure collaboration plus AI automation

Technology

React

PostgreSQL

Linux single-binary deployment

Kubernetes

Docker

Terraform

Jira

GitHub

Prometheus

Grafana

Elasticsearch / OpenSearch

Azure Blob Storage support

Webhooks and APIs

Open source / open-core codebase

Customers

U.S. Department of Defense / Platform One

Air Mobility Command (USAF)

Türk Telekom

CERN

Max Planck Digital Library

RTE (France's grid operator)

Wikimedia Deutschland

Competitors

Slack

Microsoft Teams

Rocket.Chat

Scale & contact

Estimated revenue

$20M-$30M

Estimated monthly visits

290.1K

Traffic estimate as of Jun 2026

info@mattermost.com 650-866-5518

Signals & risks

Layoff

Feb 2023

Employee-reported layoff at Mattermost that reportedly affected about 30 employees, or roughly 15% of the company; sourced from TrueUp.

Source

Latest news

Mattermost and Virtru Partner to Deliver Zero Trust Data Protection for National Security and Mission-Critical Operations

GlobeNewswire · Jul 2026

Announced a zero-trust data protection integration that applies persistent file protection inside Mattermost workflows for national security and mission-critical operations.

Mattermost and Virtru Partner to Deliver Zero Trust Data Protection for National Security and Mission-Critical Operations

Markets Insider / GlobeNewswire · Jul 2026

Mattermost announced a partnership with Virtru to add persistent Zero Trust data protection for files shared in Mattermost workflows, aimed at national security and mission-critical operations.

Mattermost Launches Professional Certification for Engineers Operating Mission-Critical Communications Infrastructure

Mattermost Newsroom · Jul 2026

Mattermost launched a new Professional Certification tier after hundreds of engineers completed its initial technical certification program.

Mattermost v11.9: Channel-Level ABAC Policies, Ranked Attributes, Program Masking & More

Mattermost Blog · Jul 2026

The v11.9 release added deeper ABAC controls, ranked attributes, program masking, and Azure Blob Storage support.

Mattermost, archTIS, Arqit, and Whitespace Deliver Integrated Operational Collaboration Capability for Defence

Mattermost · Jun 2026

Announced an integrated, AI-enhanced operational collaboration capability for defense ministries, NATO allies, and coalition partners.

Jobs and careers at Mattermost

14 jobs at Mattermost

Senior Account Executive - Federal (US ARMY)

On-site

Sales

United States

2d ago

On-site

Full-time