A Flutter full stack developer needed to add message encryption to a social messaging App

About us:

A startup project in the Bay area, California

Job details:

We have a team of developers in India who are developing a social messaging App with flutter for Android, iOS and Web (PWA). You will join the team to make user’s messages encrypted on user’s phone before sending out to the backend and decrypted on the recipient users’ phones so they can see the messages. User messages could be text, image, voice and video and live voice/video conversation which can be recoded and deliver to users after the conversation. User might have more than one device such as a phone and tablet.

We want to make sure user’s identifiable and private data is secured and private so that even App Admin can’t read user’s private data in the backend. The App should comply with the US HIPAA health data guidelines and be compatible with the Europe GDPR. The user identification protocol should be password-less based on FIDO standards.

Our team have developed the essential parts of APP such as messaging, backend data modeling, backend functions, push notifications and live voice/video conversation. We are looking for a flutter full stack developer who would be responsible to add encryption and key management to the Android, iOS and Web (PWA) Apps. The job including testing and developing related functional user GUI for exceptional user experience.

The project will be implemented in three phases:

1. Add FIDO compatible user identification

2. Add user's messages encryption

3. Add encryption to live voice/video and related recordings and transcripts.


- Previous encryption experience

- Previous experience with developing APP which are compatible HIPAA and GDPR

- Previous experience with FIDO user identification standards and developing APP compatible with FIDO.

- Front-end tech experience in Flutter and push notifications

- Back-end tech experience in firebase, firestore and Node.js

- Written and verbal English communication skills

- Work effectively with a team of professionals

Skills: Android, iPhone, Encryption, Flutter, Web Security

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About the Employer:
( 0 reviews ) Milpitas, United States

Project ID: #25862123

12 freelancers are bidding on average $558 for this job


Hello, As i check this app is based on audio, video and text chat system app same like a encrypted messaging app. we need to develop a encrypted messaging app or some additional features and functions such like all t More

$500 USD in 30 days
(99 Reviews)

Hello , I hope everything is good there! I will help you to design and develop the perfect social messaging app and based on your idea i will work and deliver the job on time line. I saw your post recently and i am More

$500 USD in 7 days
(16 Reviews)

Dear client, Thanks for this wonderful opportunity! I have done a lot of mobile apps and backend successfully, it's honestly a piece of cake for me. Below, You can see some of my proud app links, here. I have developed More

$500 USD in 7 days
(8 Reviews)

Hi There, Hope you are doing well. I have reviewed your job posting “A Flutter full stack developer needed to add message encryption to a social messaging App ” We can implement your following requirements More

$500 USD in 7 days
(13 Reviews)

Flutter app experts here. we check your core requirment and have some query need to clarify before start the development. looking for your reply. thanks.

$700 USD in 25 days
(9 Reviews)

Hello,I have build a similar project in my past experience so I have experience in your project, I am a full stacking developer, I have worked many Application, I will provide you initial features which you require wit More

$401 USD in 7 days
(6 Reviews)

hello mate I've read your description carefully that I can developed your andorid & IOS application. I assure you get good quality from my side. It would be great if you share your complete project details with me. I More

$500 USD in 7 days
(20 Reviews)

i, thanks for your job posting. I have just read your job description carefully, and I am very interested in your job. As a full stack mobile app developer, I have the skills you are looking for. I have 2+ years of exp More

$1000 USD in 20 days
(5 Reviews)

Hi JayMtz How are you? I am pleasure to apply in your project. I am an experienced Native and Hybrid app developer. familiar with Java, Android SDK, swift, react native and flutter. [login to view URL] More

$500 USD in 7 days
(0 Reviews)

Hello, I have checked The requirement and understand that as well. I have created SIMILAR in past. Do you want to see the DEMO ??? Can will send you ?? Thanks.

$500 USD in 7 days
(0 Reviews)

I am a full-time Full Stack Freelance having 7+ years of experience and have team working on Web App Developer-Designer (Specialising in CRM, ERP, Ecommerce, Website Developing & Designing, Android Apps, Ios Apps, web- More

$500 USD in 7 days
(0 Reviews)

Hello Sir, I, as an application developer, have noticed that you require an expert Flutter developer for your project that needs to be completed. With adequate experience I think I am fit for this job because I can de More

$600 USD in 10 days
(0 Reviews)