Our Team


Mario Illien

Mario Illien

Technical Director

Mario Illien was born in Switzerland. He trained as a technical draughtsman and went to work for Bonnier in 1971, helping to run an old McLaren. He was then hired by former racer Fred Stalder to modify a Chrysler-Simca four-cylinder engine for use in a Le Mans sports-prototype run by Stalder's Racing Organisation Course operation. This was used in Formula 2 in the mid-1970s at which time Illien had enrolled to study mechanical engineering at the famous Biel University Engineering School. He graduated in 1977 and joined the Mowag Company, designing diesel engines for tanks and armoured vehicles.

Mario had a passion for Motorsport and at 30 he went to work in the engine design department at Cosworth Engineering at Northampton in England. He spent the next five years designing and developing the company's engines, notably the DFY Formula 1 engine.
At the end of 1983 Illien and fellow Cosworth employee Paul Morgan founded Ilmor engineering along with Roger Penske. Mario took the position of Technical Director, leading the design of a succession of successful Indycar and F1 engines amongst other projects.


Steve Miller

Steve Miller

Managing Director

Steve started full time work in 1977 at a turbocharger manufacturer after graduating in Mech. Eng. from Loughborough University.

He joined Cosworth in 1985 to work on an F1 turbo engine, then picked up the Indy programme in 1987 and developed the existing engine, followed by the launch of two new engines which achieved many race wins and championships.

Moved to Ilmor in 1998 and built up a separate business unit from the larger F1 project, which was then bought out from Mercedes with the Ilmor name in 2005.

Since then, Ilmor has achieved many championships and race wins in every series they have been involved in, as well as diversifying into a number of other engine related markets for the skills.


Steve O’Connor

Steve O’Connor

Chief Engineer

Steve joined Ilmor in 1995 working on various aspects of the Mercedes Indycar and Formula 1 projects.

Designed the Honda Indycar engine and then led the engineering team on this engine which raced from 2003 winning 8 Indianapolis 500 races and 8 championships in 9 seasons.

Now Chief Engineer of the Racing side of Ilmor, Steve enjoys managing a very bright and talented group of design and development engineers, working on various projects including the current Chevrolet Indycar program which won 11 out of 15 races in 2012.

Joint winner of Louis Switcher award for Engineering Innovation and excellence in 2004 and 2012.


Ian Whiteside

Ian Whiteside

Chief Engineer of Advanced Projects

Ian joined Ilmor in 2002 having previously spent 13 years in the Automotive Consultancy industry working on Engine Development and EMS Calibration for a variety of production programs.

At Ilmor he has worked on a number of Racing and non-Racing projects before becoming Chief Engineer of the Advanced Projects group in 2011.


Phil Rogers

Chief Financial Officer

Phil joined Ilmor in July 2017.


Stephen Reynolds

Stephen Reynolds

Operations Manager

Stephen joined Ilmor in 2016 as Operations Manager and in this role Stephen is responsible for Manufacturing, Sales and the Logistics' activities of the business.

Prior to joining Ilmor, Stephen spent twelve years fulfilling roles in Product Development, Quality and Operation Management, specialising in the manufacture of EMS for the Automotive Aftermarket and Off highway OE.