Create a Tinder-like iPhone & Android application

Our company Overword, based in Paris and specialized in language exchange is looking for senior developers to help us create/resume a Tinder-like iOS/Android application previously started by another team and about 70% completed. A longer-term relationship for support and further developments will be studied upon satisfaction. Objective: Provide our community of language learners an app to help them find language partners more easily. Instead of matching on profile photos like on Tinder, people browse answers given in the language they're learning, match and can chat if they consider the answer provided helpful. Wireframes, designs, mockups are already available. Previous source code also if helpful. Complete project will be shared after agreement and NDA signature. - Technical skills: Java, PHP, Google Cloud Platform - App features (many are already implemented if you can take over the existing code): Login / Signup, User registration form, Contribute section, Practice section, Review practice questions, Translation of content wherever needed - Google Translate API integration, Chat with matched user, View all matches and chats, Gamification (Points system), Settings, View and Edit profile, Search functionality, Notification icon to view all new matches, new chats, Push notifications, Feedback, Privacy policy, Terms of service, Logout, Deactivate account, App language support - English and French, Other backend requirements, Edit questions at backend (Add, edit, remove questions to ask users), View members: name, date joined, last login, email, birthdate, View feedback from members: name, date and comment, Notification: send a global notification to all users, Distance based profile filtering, Purchase Credits, etc. - External platforms used: FB Login, Applozic, AdMob - Budget: 3K$-5K$ - Delay: under 3 months - Answer with detailed quote and past achievement is required by May, 10th.