Android developer needed with C++ and Cryptography skills

$750-1500 USD

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将近 7 年前

$750-1500 USD

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Looking for a Mobile Cryptography developer for development, and implementation of security features and overall improvements to make the mobile application more secure, faster and more reliable. Currently we are in development of an end-to-end encrypted messaging application, however we are short handed and need a Cryptography, C++ and Java developer who can help us out at the moment. There are seven points which has to be developed and integrated within the messaging application. We will ask you to sign a NDA to be able to work on this application of course. We need help with; - Database speed, using ObjectBox database encryption. - Block option of Force Stop / Clear Cache in application. - Keep application + database always run on the background. - Do not allow Android to make temp screenshots. - Implement Voice (.wav) messages in application. - Implement File-Transfer API in application. - Change C# + Java coding into C++ coding for Login & Registration. When this goes well, we have many more jobs available regarding this application. Budget 1.000$ ready in one week.

Mobile App Development

项目 ID: 14212316

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活跃7 年前

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61威客以平均价$1,230 USD来参与此工作竞价

@Yknox

Hello I'm interesting your project very well I'm a Good C++, Java, Cryptography , Math, Algorithm expert. I m quite well experienced in these jobs. Let's go ahead with me I want to service for you continously. Thanks

$1,200 USD 在20天之内

4.9

(1124条评论)

9.5

@EliteSolution8

Hello, How are you today? After reading the details about the project, I have placed my bid to work with, and am available to discuss about the project in detail. So feel free to send me message to discuss more over chat. I am able to deliver error-free project and the same one what you want exactly in a timely fashion, and outstanding quality, so let's go together for your project and your success on business. You can also check my previous experience in freelancer here. https://www.freelancer.com/u/EliteSolution8.html I look forward to hearing from you Best regards, CaiHong.

$1,250 USD 在20天之内

5.0

(61条评论)

9.0

@HugeWave

Dear sir. I am a professional mobile app developer and have full experience for 6 years. I read your project description carefully and I can understand what you want. So now I can start your project and until you are satisfy, I will provide full service and do my best for you. Please contact me. I value my credit and will be kept the promise with you. I hope you agree my proposal and will be accomplish it quickly and quality so that you 're satisfy about it. Thanks very much.

$1,250 USD 在20天之内

5.0

(111条评论)

9.0

@TenStar718

Hello I have experience about Android and IOS app I have Fitness App,Ecommerce App,Chat App, School Management App,IPTV app,Tournament App, Photo Sharing App and Booking app also.. And Full experience about Google Map and other Google Services. i can also decompile any exisiting apk... if you have sample app, i will extract full source code and you can customize that app.. if you have interest contact me. thank you..

$1,184 USD 在20天之内

4.9

(276条评论)

8.8

@zhandong0217

How are you today? I am a full time mobile developer with 5+ good experience I can start your project from now on if we meet agreement. Please contact me for discussion, i am always ready to discuss about your project. If you select me , i will promise these points. - Daily Updating about the project. - Will keep deadline and high quality delivery. - Responsive app store submission guidance. - Bug free warranty If you are still hesitating to select me, please check my profile and reviews and ratings. https://www.freelancer.com/u/zhandong0217.html Hope to work with you for a long term. Regards.

$1,184 USD 在20天之内

5.0

(117条评论)

8.5

@ITWhiz4U

Hello, client. My number one priority is customer service and satisfaction! I can develop iOS and Android apps, server backend api and admin panel in PHP,MySQL and Website for the app. I have developed many applications involving various functionalities GPS, Photo and Video App, Getting/Uploading data from server(JSON), Google api, Facebook api , Messaging, News and many other implementations. I can provide you good quality work from design to publishing the app to stores. Long term maintenance after delivery, also. You will be satisfied by my work at each test step. I will deliver the app in time with perfect implementation of your app requirements. You will get free bug-fixing even after project completion. I would like to build a good relationship with you while working together. Please contact me and let's discuss the project in detail. Best regards.

$1,250 USD 在20天之内

5.0

(75条评论)

8.3

@vasundhara19

Dear Sir, We are working on Web, iPhone, iPad and Android, We have the large team of that skills with a designer. We have checked your requirement and we are interested in working on it, would like to see wire-frame for more detail. We ensure to give the best quality work, please check one time our profile it shows our talent and experience. We already developed 500+ apps/games for Android & iOS. Application, Game and Website development is our strength. Basically speaking, we are the people who develop with passion!

$1,052 USD 在15天之内

4.9

(132条评论)

8.4

@idragon712

Hello My name is Po. I have got your job posting for app developing. According to your job description, I have come to know that you are searching for an expert one. Recently I have successfully completed so many Mobile projects. For more information will you please visit my work history. Success is my main aim. And I have a strong belief that I will be able to satisfy you in this project. Hope I will be hired. I will be available more than 50 hours per week and able to start your project as soon as possible according to you. Thank you for your consideration. Best Regards, Po

$1,184 USD 在20天之内

5.0

(161条评论)

8.4

@alexhong

Hi I am a senior Android & iOS developer and have great interest in your job. I have been developing mobile app for more than 6 years and have rich experience in mobile app development so I can deliver what you want. I well known about C/C++, C# and have experience on Cryptography. I have sharp eye for design. I can analyse user's requirement in detail and write app from scratch and support to publish to play store. I have strong skill in software architecture and have extensive knowledge in integrating gradle libraries. Have full experience for project management and bug tracking using BitBucket or GitHub. I always write high performance, bug-free and well tested code. Looking forward to hear from you. Thanks.

$1,250 USD 在20天之内

5.0

(101条评论)

8.4

@LiangXiaoJin

Dear client, how are you? I am a C/C++ programmer and mathematician. Please check my "Profile & Work List" and tell me details if my skill is in your concern. Looking forward to your response. Thanks.

$1,200 USD 在10天之内

5.0

(73条评论)

7.4

@yashtechsolution

Hello, I Am full time available on work. I have viewed your requirements and found our self the most appropriate for the project Please share all the requirement details across to me So i can go through it and start working on it. I am having more than 5 years of experience in mobile application almost all area of mobile & web development whether it is Android Phone / Tablet / New Generation Android Device or iPhone/iPad, Hybrid Apps or Any technology (PHP/CMS/Hybrid Apps etc) My previous similar development experienced worked on the Social Media, Dating, Property Portal,Taxi booking, Book Order and Delivery, Fitness,Finding restaurant by near by location, Classified(Buy & Sell), Multi Vendor eCommerce application I built 100+ apps in android and iPhone,iPad with webadmin panel and website Being an honest person I do my work with sincerity which develops very good relation with customer Looking forward to your response Regard Alina Developer Thanks

$1,000 USD 在20天之内

4.7

(112条评论)

7.7

@rightbigboss

Hello, I am an Expert and Experienced Developer. I have read your project description and its very clear to me. I am 1000% confident for the project. I have ever done similar project. Even you can check my Reviews and Ratings . I am perfect developer for your project. Expecting your quick and +ve reply.. Thank You.

$1,000 USD 在20天之内

4.9

(47条评论)

6.7

@webbookstudio

Hello, my name is Michael. I represent Ukrainian based IT-company Webbook Inc that provides services in the IT-sphere for international business. We were carefully reviewing the requirements of the job description, so our devs can work on Your project without delay. We have years of working on projects related on any available CMS, from "scratch" with core php and php-frameworks(Yii/Yii2, Laravel, CodeIgniter), JavaScript, jQuery, AJAX, HTML5, CSS3, Bootstrap, javascript-frameworks, 3d desidg, graphic design etc. However, I shall discuss about the requirements and functionalities in details to have a better understanding about time frame and price. We are glad to chat with You and discuss all in details. Contact us and we will reply immediately. Waiting for Your reply! Best regards, Webbook team

$1,200 USD 在20天之内

5.0

(8条评论)

6.4

@king18yat

1.) I shall communicate daily and shall provide daily work updates. 2.) I shall provide 1 year support.

$1,500 USD 在33天之内

5.0

(32条评论)

6.2

@reddysir2016

Experts from IIT India ‘Dedicated Developer Service’ gives you access to Single or team of Dedicated Developers / Programmers, exclusively working for you on your projects at our software development outsourcing center in India. In short, it helps minimize the costs involved in establishments and development activities with contracting and highly specialized staff, located in a low-cost Indian environment. Reduced costs of development will help achieve a lower price of your products/ services and better, competitive position in the market for your company. An offshore software application development company, Experts from India having a range of Skills available in our In-house staff: Dedicated: Android Developer, IOS Developer, Website Developer, ECommerce developer, PHP Developers, ASP.NET Developer, ASP Programmer, Web Designer, VB/VB.net Developer, Admin Staff and more… Thanks & Regards IT HEAD Development Team

$1,250 USD 在20天之内

4.4

(7条评论)

5.9

@anirbanbanerjee

Hi, I was going through your project specs and I have some questions to ask you. Are you available to have a quick chat now? Thanks and Best Regards KD

$1,138 USD 在40天之内

5.0

(4条评论)

5.0

@jonyahmed105

Dear client I am highly interested to do this project. I will make you happy.I don’t need any upfront or milestone payment. Pay me when you will happy. Looking forward. Thanks

$1,250 USD 在20天之内

4.0

(13条评论)

5.0

@SilentStarMagic

Hi, I am a serious developer who aims to provide high quality services. If you contact me, we can discuss more things detail and will be achieved with each other's purpose. Good luck for your business…

$1,250 USD 在20天之内

4.3

(13条评论)

4.5

@DevoirTechsoft

We have done big and complex projects with quality and most of our business comes with repeat hires because of that, so looking forward to build a long term working relationship with you. Let’s have a chat session!!! We are having expertise team to give you very good support. Best regards Divyansh DVS

$1,250 USD 在20天之内

5.0

(5条评论)

4.1

@Dilipjaipur

Hello, We are working through freelancer since 7+ years. We have ranking in top 2700 on freelancer.com and we hope it will give you an idea about our work quality and dedication to work. You will be safe while working with us. We have dedicated in house team for WordPress, PHP, CakePHP, Bootstrap, Magento, HTML, CSS, JavaScript, Jquery, AJAX, MySQL, PHP framework, API's, PSD to HTML, Logo/banner design, SQL, JSP, ASP.NET, .NET, App Developer, App Designer, Apache, Websites Design and Development, Web Application Development, E-commerce Website Development, Marketplace Development, Web Portal Development, Custom Software and Plug-in Development, Web Applications Testing, Android Mobile App development, Game development, Unity3D, HTML, Multiplayer and all other IT skills. We will provide you proper proposal and time after you send us message as we can attach any document through PMB only. Please see our portfolio https://www.freelancer.com/u/Dilipjaipur.html?page=portfolio Final price and time we can only quote once complete discussion with you. Thanks

$1,250 USD 在20天之内