Based in Poland, Michalek joins SIS after a six-and-a-half-year spell with Enterctive, where he was most recently country sales manager for Malta after previously serving as sales coach and reactivation sales agent.
Michalek also spent time working for online gambling brands LV Bet and Betcris.
“Starting a new role at any company can be a challenge, but my industry background means that in joining such a well-established supplier at the head of its field, I’m confident that I’m going to have all the tools at my disposal to achieve this,” Michalek said.
“Having such a comprehensive product offering, including market-leading Live Racing and rapidly growing numbers and competitive gaming products, means that I believe SIS will continue to maintain its impressive trajectory.”
SIS head of sales for the UK and Europe, Helen Ridley, added: “Bartlomiej joins us at an ideal time to enhance the increased delivery of our wide range of 24/7 betting content to our partners, including the recently launched CS:GO Competitive Gaming product which we believe will resonate with bettors in the UK and Europe.
“Making our market-leading, 24/7 solutions available to an ever-growing customer base requires safe, experienced hands and I have no doubt that Bart is the right person to achieve this.”
The addition of Michalek to the SIS team follows a series of appointments in recent months including Brenda Strickland as regulatory and business affairs manager and Sean Beirne as US commercial manager, both within its SIS Content Services Inc US-facing subsidiary.
Other recent appointments include Adam Conway as head of competitive gaming and Aiden Tracey as head of racing trading, while Julian Wheeler was named chief technology officer.
In addition, Joe Andrews was promoted to head of sales for Africa, Angel Calderon moved into the role of head of sales for Latin America and Iberia, and Helen Ridley a similar role within the UK and European team.