Hyron assumes her new role with immediate effect.

She will be responsible for leading the consortium of IT partners to design, build and operate the massive, mission critical IT infrastructure and solutions that will support the London 2012 Games.

The IT systems provided will process the accreditation badges for the 250,000 members of the Olympic Family; manage staffing rotas as well as delivering the results to the world in less than a second.

Patrick Adiba, the executive vice president for the Olympic Games at Atos Origin, said: “Michèle’s appointment represents a major milestone in our preparations for the London 2012 Games.

"Her commitment, determination and passion for delivery together with her extensive experience of working on Olympic and Paralympic Games projects will serve her well, as she leads the 3,000 strong IT team to ensure the successful delivery of the London 2012 Games."

Gerry Pennell, CIO at LOCOG, said: “We are delighted to welcome Michèle to London.

"We look forward to working with Atos Origin and drawing on its experience and expertise to ensure the successful delivery of the London 2012 Games."

Hyron has been involved in the Olympic Games project with major Events since 1999, including being chief integrator for the 2004 and 2008 Olympics.

Previously, she served as project manager for Atos Origin Energy Division in Grenoble, France.

She was part of the team who delivered the world’s first computerised nuclear plant control system.

Hyron graduated from Ecole Polytechnique Feminine in France with a degree in Computer Science.

She said: "I am delighted to be in London and look forward to sharing my previous experience to ensure that the London 2012 Games are a success.

"In our role as Worldwide IT Partner Atos Origin will integrate, manage and secure the vast IT system that relays results, events and athlete information to spectators and media around the world, and will ensure that technology plays an even greater role in helping to stage the low carbon Games."

Jean-Benoît Gauthier, technology director of the International Olympic Committee, said: “As the IT Partner to the Olympic Games since 2001, Atos Origin has consistently met our expectations and has delivered the IT systems and infrastructure at each Games on time and within budget.

"The success of each Olympic Games relies and depends on knowledge and experience being transferred from previous Games to help keep costs down and to lower risk, so we are delighted that Michèle, who has almost 10  years of Olympic Games experience, is leading the technology team for London 2012."

Hyron will lead a team that will ramp up from eight today to several thousand during the London Games themselves.

The team will include employees from Atos Origin, the technology partners, Lundon 2012, as well as volunteers.

It will implement and protect the technical infrastructure for all competition and non-competition venues.

Between now and the opening ceremony of London 2012,  this combined team will deploy more than 1,000 servers, 10,000 PCs and 4,000 printers and will roll-out the latest security monitoring solution to filter and prioritise potential IT security risks to the services, ensuring the team is immediately notified and can react quickly to any unusual or unexpected activity.

It will also conduct more than 200,000 hours of testing to ensure that it is prepared for as many scenarios as possible.