Executive Management Team

Tatu Ylönen

Tatu Ylönen,

Chief Executive Officer

After founding SSH Communications Security in 1995, he 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 with significant technical achievements:

  • Developed the SSH (Secure Shell) protocol for secure remote access and SFTP for file transfers.
  • Implemented the original free SSH client and server, which later became OpenSSH.
  • Developed patented NAT Traversal technology, which is now included in most major smartphones, computers, and 3G/4G telecom equipment.

Tatu has authored several IETF standards and NIST IR 7966, and is the inventor in 30+ US and international patents, including several essential patents on major telecommunications standards. Prior to his current role as Chief Executive Officer, Tatu has held various roles including COO and CTO, and is also a Board Member at the company.

Tatu holds a Master of Science degree from Aalto University, Finland.

Jussi Mononen

Jussi Mononen,

Chief Operating Officer

Jussi brings nearly 30 years of international high technology management, sales, and growth experience to SSH Communications Security. He is responsible for global sales and day-to-day operations of the company. He has worked for over 13 years internationally, mainly in the United States.

Jussi has been the CEO of several growth companies, including Ekahau Oy, Portalify Oy, and VDSL Systems Oy. He has also considerable experience from enterprise sales and marketing, M&A, management consulting, venture capital, and entrepreneurship.

Jussi holds a Master of Science degree in Corporate Strategy and International Marketing from the Helsinki University of Technology. He has undertaken further studies at UCLA and University of Helsinki. He is also a certified Strategic Product Manager.

Helena Kukkonen

Helena Kukkonen,

Chief Financial Officer

Helena brings more than 20 years of experience in financial and management accounting and reporting, as well as finance process and systems development to SSH Communications Security. She is responsible for financial management, treasury, human resources, corporate development and corporate governance. She also acts as 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 global large scale company, as well as global functional finance teams in Manufacturing and Supply Chain area, including mobile phones factories worldwide.

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

Matthew McKenna

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

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 re-joining 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

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.