The People Behind the Platform
Our leaders bring deep domain expertise across military, intelligence, and mission-critical operations—with decades of combined experience at organizations like Microsoft, Cisco, Oracle, Ripjar, Check Point, and the U.S. Department of War.
One Team, One Mission
We are one team united in enabling sovereign, secure collaboration and AI-powered automation for the organizations that protect nations and critical systems worldwide.
Executive Leadership
Ian Tien
CEO & Co-Founder
Leads Mattermost, Inc. global parent company delivering sovereign collaboration, automation and AI solutions for national security and critical infrastructure enterprises. Former product leader for Microsoft Office and OneDrive with a dozen patents in Microsoft technologies. Engineering degrees from the University of Waterloo and Cornell University; Stanford MBA. U.S.-Canada dual citizen.
LinkedIn
Corey Hulen
CEO, Mattermost Federal, Inc. & Co-Founder
Leads the U.S. federal subsidiary serving Department of War and intelligence community customers. CTO Emeritus and Co-Founder of Mattermost. Founded Tempo AI (acquired by Salesforce); former Microsoft Office engineering manager and architect. Holds 30 patents in Microsoft technologies. U.S. citizen.
LinkedIn
Adam Enterkin
Chief Revenue Officer
Leads global revenue organization. Former Global CRO for world's leading sovereign communications business at BlackBerry (NYSE: BB; TSX: BB), headquartered in Waterloo, Canada. Led BlackBerry's transformation to global software business, with NATO-certified, BSI-approved solutions trusted by G7. London-based for 7 years building international operations. Earlier career at SAP (Walldorf, Germany) & Citrix. U.S. citizen.
LinkedInGo-to-Market Leadership
James Mullins
VP Sales, EMEA & APAC
Based in London, UK. 30+ years selling into international government, military, and intelligence organizations, as well as financial services, telecommunications, and oil & gas. Prior leadership roles at Ripjar (global threat detection), SS8, Narus (network intelligence), and Equiis Technologies — deep expertise in security and intelligence technology markets across NATO-allied and Five Eyes nations.
LinkedIn
Shigeru Harasawa
General Manager, Mattermost Japan KK
Based in Tokyo. 25+ years in enterprise technology with leadership roles at Oracle, DataRobot (Japan Country Manager), IBM, Netezza, and DataStax. Leads Japan market entry and JSDF engagement — key to Indo-Pacific defense modernization and "assured cooperation" with allied forces.
LinkedIn
Devanesan "Moses" Moses
VP Customer Enablement & Success
25+ years in cybersecurity post-sales leadership (Claroty, Cybereason, Check Point). Leads global Technical Account Management, professional services, support & partner enablement — maximizing customer value, adoption, and retention for defense, intelligence, and critical infrastructure customers worldwide.
LinkedIn
Leigh Dow
Chief Marketing Officer
25+ years driving GTM strategy across cybersecurity, physical security, and defense within national security, technology and global growth. Began on Capitol Hill in the U.S. Senate shaping policy, advancing into government affairs at Intel, leading initiatives across the Dept. of State, immigration, and labor programs. Led global marketing and $1B sales channel at Honeywell Aerospace. VP Global Marketing at Identiv (physical/digital security).
LinkedInProduct, Engineering + Security Leadership
Jason Blais
VP Product & NATO Alliances
Based in Helsinki, Finland. 10+ years in enterprise B2B collaboration for IT, DevOps & security teams. Leads product strategy and NATO alliance partnerships, aligning platform capabilities with defense, cybersecurity, and critical infrastructure mission requirements across allied nations.
LinkedIn
Pavel Zeman
SVP Engineering & Security
Based in Atlanta, Georgia, USA. 25+ years building and scaling products and engineering organizations at Microsoft (security-focused, multiple patents), Red Canary, and MobileIron (through IPO). Owns platform engineering, security, infrastructure, DDIL/edge architecture, and sovereign AI integration.
LinkedIn
Daniel Schalla
VP Infrastructure & Security
Based in Cologne, Germany. SANS-trained security leader and international speaker. Member of the European Cyber Security Organisation (ECSO). Works with NATO on Locked Shield and other cyber defense exercises. Leads strategic CSP alliances with Microsoft, Oracle, Google, and AWS.
LinkedInGlobal Operations Leadership
Lane McFarland
Chief People Officer
15+ years scaling people operations and talent strategy in cybersecurity and enterprise technology. Previously VP People Operations at Flashpoint (threat intelligence); earlier, Director of People Operations at Risk Based Security (acquired by Flashpoint). Experienced in hiring, developing, and retaining staff with security clearances. Ensures Mattermost attracts top-tier national security and critical infrastructure talent across a global, remote-first workforce.
LinkedIn
Kendra Niedziejko
Chief Financial Officer
25+ years in finance at high-growth technology companies. Most recently Chief Accounting Officer at MNTN, Inc.; previously CFO at xMatters, Inc. Earlier career includes key roles in the IPOs of OpenTable and E-LOAN. Leads financial operations, FP&A, strategic planning, and growth objectives across Mattermost's global entities.
LinkedIn
Nirosha Ruwan
VP Legal
Two decades of leadership across legal, public sector, and business operations. Former attorney at Latham & Watkins and Cleary Gottlieb. Manages corporate legal, compliance, IP, and international subsidiary governance across Mattermost's global entities serving defense, intelligence, and critical infrastructure markets.
LinkedIn
Linda Dalenberg
VP Corporate Controller
Experienced finance operator with prior roles at MNTN, Everbridge/xMatters (supported $240M M&A), and Kovarus. Owns accounting, financial reporting, payroll, and NetSuite administration — critical to FP&A rigor and investor due diligence readiness.
LinkedInGet to Know Us Better
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