CHAT Developer For company

Hi I am looking for a professional for a 6m, 1yr, or 2yr contract. He must have experience in chat applications. Security is very important in our app. Experience: - sendgrid -xmpp - [login to view URL] -twilio -stripe -middleware -mixpanel -collaboration with teams -scrum -angile development -security Please share your linkedin. Key attributes: -Customer satisfaction by early and continuous delivery of valuable software. -Welcome changing requirements, even in late development. -Deliver working software frequently (weeks rather than months) -Close, daily cooperation between business people and developers -Projects are built around motivated individuals, who should be trusted -Face-to-face conversation is the best form of communication (co-location) -Working software is the primary measure of progress -Sustainable development, able to maintain a constant pace -Continuous attention to technical excellence and good design -Simplicity--the art of maximizing the amount of work not done--is essential -Best architectures, requirements, and designs emerge from self-organizing teams -Regularly, the team reflects on how to become more effective, and adjusts accordingly