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 O’Connor

Steve O’Connor

Managing Director

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

He designed the Honda Indycar engine and then led the engineering team on this engine which raced from 2003 winning eight Indianapolis 500 races and eight championships in 9 seasons. More recently Steve led the Race Engineering group to achieving six consecutive Indycar Manufacturer titles with Chevrolet. Working with race winning customers across multiple other race programs in other top level series.

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. Ilmor’s success is down to the very talented and dedicated workforce.


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.


Graham Langham

Chief Engineer - Racing

Graham first worked at Ilmor from 1987 through to 2003 on the successful Indy and F1 engine programs.

He then worked independently as a consultant to various categories of racing customers for several years and returned to Indycar racing in 2011/12. Graham then moved to a Supercar manufacturer, as Engine Manager in the Powertrain Group.

In August 2017 he returned to the Ilmor team at Brixworth.