Executive Director
EveryMatrix
2026 – Present
CEO Games
EveryMatrix
2024 – 2026
Chief Commercial Officer
EveryMatrix
2019 – 2024
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Stian Hornsletten
Executive Director
EveryMatrix
Stian Hornsletten is the co-founder and the Executive Director at EveryMatrix, a leading B2B iGaming technology provider. He has more than two decades of experience in the online gambling sector, and he co-founded EveryMatrix in 2008 with Ebbe Groes. Under his leadership, the company grew from a startup into a global powerhouse with over 1,000 employees and clients in 30+ regulated markets.
Career
Major Achievements
Hornsletten was one of the main drivers for the conceptualization and launch of SlotMatrix, EveryMatrix’s B2B casino content aggregator. This standalone product prides itself on being the world’s largest library of games (over 22,500 titles), accessible by operators via a single integration.
During his time serving as the CCO, Hornsletten secured landmark government contracts for EveryMatrix. These include partnerships with Norsk Tipping (Norway’s state lottery) and Veikkaus (Finland).
Hornsletten was also leading the company’s efforts in winning the public tender to power the online sportsbook and casino for the Hungarian national lottery company (Szerencsejáték) in 2023. EveryMatrix beat 24 other contenders, offering the integration of the national lottery company and its sports betting brand TippmixPro with the award-winning OddsMatrix sportsbook platform and data feeds.
Awards & Recognition
Stian Hornsletten’s leadership over the years has led to EveryMatrix receiving consistent industry acclaim. The company received the Casino Software Supplier of the Year award for its CasinoEngine product at the EGR B2B Awards (2024). EveryMatrix was also the recipient of the Multi-Channel Supplier of the Year award at the SBC Awards (2024).
Additionally, his focus on product excellence helped EveryMatrix become the first iGaming supplier to secure the WLA Safer Gambling certification in 2023.
Career Highlights
Before starting EveryMatrix with Ebbe Groes, Hornsletten co-founded BetOnBet in 2001, an online betting exchange and operator. His experience with managing a B2C operator gave him unique insight into the major pain points of existing software options. This experience served as a major inspiration for his main projects at EveryMatrix.
Hornsletten is credited with the strategic vision for CasinoEngine, a productivity platform that allows operators to manage bonusing, gamification, and lobby management across multiple vendors from a single back office.
In February 2024, Hornsletten voluntarily transitioned from Group CCO to CEO of the Games division, highlighting his desire to return to product innovation. In that role, he focused specifically on growing the company’s proprietary game studios (Armadillo Studios, Spearhead Studios) and its third-party aggregation.
Hornsletten holds a degree in Computer Science, which has proved invaluable in bridging the gap between developers and business clients.
Frequently Asked Questions
Q: Who is Stian Hornsletten?
A: Stian Hornsletten is one of the founders of EveryMatrix. He has served in several executive roles after founding the company with Ebbe Groes, including CEO, Executive Chairman, Executive Director, and Chief Commercial Officer.
Q: What is Stian Hornsletten’s current position at EveryMatrix?
A: Stian Hornsletten’s latest position within EveryMatrix is Executive Director, starting from February 2026. Before that, he served as CEO of the Games division from February 2024.
Q: How did Stian Hornsletten start EveryMatrix?
A: He co-founded EveryMatrix with Ebbe Groes, following his seven-year tenure at BetOnBet (which he also co-founded). Given his experience with inefficient operator software at the time and his background in Computer Science, he wanted to build flexible, API-driven solutions to address the pain points he faced while running BetOnBet.
Q: What company did Stian Hornsletten run before EveryMatrix?
A: Stian Hornsletten was the co-founder and Managing Director of BetOnBet, an online betting operator, from 2001 to 2008.
Q: Does Stian Hornsletten own EveryMatrix?
A: EveryMatrix is still privately owned. As one of its co-founders, Stian Hornsletten remains a key stakeholder in the company, but he is not the exclusive owner of EveryMatrix.
