Senior Application Developer

• At least 5 years experience in programming languages including Javascript (Angular.js and React/React Native), Java, C/C++, Objective-C as well as HTML5/CSS

• Webtool browser kits for various OS Environments (Webkit, V8, CEF)

• OS Programming Environments: Linux, Windows, Mac, and Mobile (iOS, Android) app development environment

• VPN and network security experience

• Networking, routing, and security

• Web Services (XML-RPC, REST)

• App UI design skills, on both desktop and mobile

We need a developer who is able to work with a high degree of autonomy (i.e. able to work and be innovative given general goals, with minimal supervision needed). Documentation skills are required – all work has to be properly documented for the rest of the team.

The ability to design usable, attractive user interfaces is needed (most of the work is on our client-facing interfaces).

We need knowledge of browser and app interaction (specifically single-signon, javascript-java bridging, intents and mime-types, cookie injection and other techniques)

The developer has to be familiar with change management software such as SVN and Git and Jira for issue tracking and reporting.

Networking and low-level TCP/IP experience is a must, most of the work will have to do with VPN, routing, NAT traversal, IP filtering and firewalls, etc. OpenVPN and general security/encryption experience would be preferable.

Also, we need someone who is able to create and execute unit testing and initial QA on apps, including creation of test plans and setting up test environments for our QA engineers.


The primary requirement for this position is an app developer that has worked on all four platforms (Windows, Mac OSX, iOS and Android). They should understand how to develop and deploy applications, as well as understanding the differences and limitations of apps on them.

Secondary requirements are:

• Webtool/webview/CEF experience (or other similar embedded browser platforms).

• Knowledge of networking specifically socket programming, TCP/IP stack, IP routing, subnets, gateways, http proxies

• Ability to do layout and UI design on apps, specifically user interactions, differences between the various platforms

• Experience with real-time notification systems (node.js, React, etc)

• Experience with deploying apps on the iTunes iOS/OSX store, Google Play Store, Microsoft App store, Amazon App store and other app platforms

“Nice to have” requirements are:

• VPN app experience, specifically OpenVPN servers and apps

• advanced app/browser interactions including cert injection, chrome apps, mime-types, browser intents

• Linux app experience, specifically working with UI such as KDE/Gnome/Unity and others

• Security experience, specifically PKI, encryption, [url removed, login to view] certificates, SSL, Deep Packet Inspection, packet analyzers such as Wireshark, etc.

• we are willing to consider developers with less than 5 years experience but no fresh grads or candidates with no app development experience.

Compétences : AJAX, Programmation C++, HTML, Java, Javascript

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Concernant l'employeur :
( 13 commentaires ) Stockholm, Sweden

N° du projet : #13255517

53 freelances ont fait une offre moyenne de 14 $ /heure pour ce travail


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16 $ USD / heure
(332 Commentaires)

Hi, I have gone through the description and glad to say that we have experience in developing Native Mobile App and we are confident to provide you the work you are looking for. We have a team of experience develo Plus

10 $ USD / heure
(114 Commentaires)

I have experience of iOS / Android development for 8 years. Special point in connecting devices with iphone such as apple watch ,iBeacon , obd2 elm327 .. etc. Image Processing with Camera dectection and OpenCV is als Plus

12 $ USD / heure
(124 Commentaires)

Hi, After reviewing the details the basic requirement is clear to us. But we have some questions regarding the functional flow of the App. So it would be great if you reply via chat in order to have a detail discuss Plus

10 $ USD / heure
(51 Commentaires)

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15 $ USD / heure
(42 Commentaires)

Hello, I am Tahsinul Alam, completed Masters in Software Engineering now working as one of the project manager in Java team of Workspace Infotech Ltd, software/Outsourcing firm located in Dhaka, Bangladesh. We have Plus

12 $ USD / heure
(33 Commentaires)

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12 $ USD / heure
(47 Commentaires)

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13 $ USD / heure
(17 Commentaires)

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22 $ USD / heure
(8 Commentaires)

Dear sir, thank you for posting project. We have been a software development team for 8 years experience in both front end and back end development technologies including advanced .Net, C# Programming, PHP CMS, PHP Fr Plus

12 $ USD / heure
(39 Commentaires)

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15 $ USD / heure
(105 Commentaires)

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8 $ USD / heure
(18 Commentaires)

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22 $ USD / heure
(41 Commentaires)

Hi Dear, I’ve reviewed your requirement and understood that you are looking for an experienced team of mobile application developers to work with you on your vision and convert into the reality. As we have the r Plus

12 $ USD / heure
(15 Commentaires)

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11 $ USD / heure
(17 Commentaires)

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15 $ USD / heure
(13 Commentaires)

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13 $ USD / heure
(32 Commentaires)

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8 $ USD / heure
(35 Commentaires)
12 $ USD / heure
(6 Commentaires)

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12 $ USD / heure
(2 Commentaires)