Chef de projet Mobile Freelance

Je recherche un Chef de projet Mobile pour une mission démarrant au plus vite (nécessité de travailler en juillet et août), pour un client grand compte dans le secteur médical. Basé à Courbevoie avec des déplacements à prévoir.
Voici le descriptif de poste, en anglais, car il faut parfaitement maîtriser cette langue :

I need a dedicated Project Manager to follow-up on the mobile track from now until year-end (at least).
He/she will be responsible for the coordination of the development track, keeping the timelines and ensuring we deliver on the proposed scope. He/she will also be responsible for testing and preparation of the country by country roll-out, including process design, project follow-up and training.

• Skills
o Experience in software architecture (Data synchronisations, buffering, caching, …)
o Understanding of web and mobile technologies (XML, JSON, REST, Xcode, …)
o At least 1 year of experience in mobile, as PM and/or developer
o Good understanding of iOS and Android platforms
o Preferably experienced in managing applications across countries, covering multiple languages and as part of a multi-channel approach: app + web
o Min 3 years of experience in project management

• Personality / Other
o Independent worker
o Pro-active suggestion maker
o Able to work in an international context & fluent in English
o Experienced and assertive enough to challenge providers when needed
o Available to join us in our offices in Paris