Executive Management Team


Tatu Ylönen - Chief Executive Officer

Tatu Ylönen founded SSH Communications Security in 1995, grew the company to $20 million in sales and 190 employees in five years, and led the company to a public listing on NASDAQ OMX Nordic in 2000. He is an experienced entrepreneur and invented SSH (Secure Shell) and NAT Traversal. He also co-authored NIST IR 7966, guidelines for managing SSH keys. For more information, see his personal page.

Prior to his current role as Chief Executive Officer, Tatu Ylönen has held various roles in the company throughout the years, including CEO, CTO, and Chief Innovation Officer. He is also a Board Member and the largest shareholder of the company.

Tatu Ylönen holds a degree of Licensiate of Technology from Helsinki University of Technology (now Aalto University). He has previously founded several other companies and invested in a few; one of the other companies went public in 2014.


Jussi Mononen - Chief Operating Officer

Jussi is a seasoned growth company executive who has been CEO and founder of several venture-backed companies. He has nearly 30 years of management and consulting experience from international technology-intensive businesses with a sound understanding of strategy, communications, operations, processes, and critical success factors. He also has a strong track record in fundraising and M&A transactions.


Helena Kukkonen, Chief Financial Officer

Helena brings more than 20 years of experience in financial and management accounting and reporting, finance process, and systems development. She is responsible for financial management, treasury, human resources, corporate development, and corporate governance. She also acts as a secretary to the Board of Directors.

Prior to joining the company in September 2016, Helena held several senior financial management positions at Microsoft Corporation and Nokia Corporation. She headed finance and control functions on group and business unit level for a global large scale company, as well as global functional finance teams in manufacturing and supply chain area, including mobile phone factories worldwide.

Helena has a Master of Science in Economics degree from the University of Vaasa, Finland.


Matthew McKenna - Chief Strategy Officer and VP of Key Accounts

Matthew brings over 15 years of high technology sales, marketing, and management experience to SSH Communications Security and drives strategy, key account sales, and evangelism. His expertise in strategically delivering technology solutions that anticipate the marketplace has helped the company become a market leader. Prior to joining the company, Matthew served as a member of the executive management team of ADP Dealer Services Nordic and Automaster Oy, where he was responsible for international channel operations and manufacturer relations. In addition, he was responsible for key accounts including Mercedes-Benz, General Motors, and Scania CV. Before this, Matthew played professional soccer in Germany and Finland. Matthew holds a Bachelor of Arts degree in German from the University of South Carolina and an MBA from the Helsinki School of Economics and Business Administration.


Markku Rossi - Chief Technology Officer

Markku brings close to 25 years of software engineering and architecture experience to the company, is responsible for the global R&D, and directs the company’s technology strategy. Markku has extensive knowledge and experience with SSH Communications Security products, having served the company from 1998 through 2005 as a Chief Engineer, leading the contribution to the SSH software architecture. Prior to rejoining the company in 2015, Markku founded several companies such as Codento and ShopAdvisor, served as CTO at Navicore, Chief Architect at Nokia, and is currently member of the board at Codento and partner at Prominda Revolution. Markku holds a Master of Science degree in Computer Science from the Helsinki University of Technology (Aalto University) in Finland.


Kalle Jääskeläinen - VP, Enterprise Key Management

Kalle has over fifteen years of experience in information security services, R&D, and product management. As the VP, Enterprise Key Management, Kalle is responsible for delivering customer-driven and high-performance security solutions and services that protect our customers’ critical data and infrastructures. Kalle’s combination of extensive customer-facing experience and technical background is ideal for understanding the market and customers’ challenges, and how those can be resolved in enterprise environments. Kalle received his Bachelor of Science from the Vantaa Institute of Technology, Finland where he specialized in Telecommunication and Computer networks. Kalle carries a CISSP certification.