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On average, 29 SIP projects are completed every quarter on Upwork.


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Average SIP Freelancer Feedback Score

SIP Upwork freelancers typically receive a client rating of 4.47.

Last updated: October 1, 2015

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Piyush Jain

Piyush Jain Agency Contractor

iOS, Android, Mobile, HTML5, Javascript, Angular

United States - Portfolio: 41

SIMpalm is a team of developers and designers in Washington DC area with extensive experience in mobile app and responsive web development. We have developers with iOS, Android, HTML5, Bootstrap, Angular JS, Javascript, Titanium, Phonegap, PHP, .Net, Parse, Amazon and Windows Azure experience. We also have designer in our team who can create the perfect wireframes and Graphical UI for your project before starting the development. We have delivered more than 250 projects in mobile and web domain in last six years. We have developed several applications for startups, financial, healthcare, automation, bluetooth integration, entertainment, education, productivity, emerging technology, B2B and B2B verticals. We would fully understand your project before starting working on it.

Associated with: SIMpalm

83% Job Success
$32.00 /hr
0 hours

Mehdi R.

Mehdi R.

Network Engineer

United Kingdom

Being an organized and disciplined person, I have a passion for system optimization, automation and orchestration. When I see all the systems are optimized, up and running, that is the day for me to celebrate. That is my motivation to look for new solutions and ideas to make my job easy and run my organisation's infrastructure flawless. As long as there is a problem there should be a solution for it and if you have not found the solution yet, chances are you are not looking good enough or you are looking at the wrong direction. Just be patient (but not lazy) and keep searching. ** I am the calm one who does not get frustrated and stressed under the pressure ** I am always in self-taught learning phase ** I look for new challenges otherwise I get bored ** Give me a system and I will make it run like a Mercedes

$75.00 /hr
0 hours

Christos D.

Christos D.

Independent Multimedia, Communications and Marketing Consultant

Canada - Tests: 10 - Portfolio: 18

Resourceful, Cooperative, Technology Orientated Multitasker and Motivated Self Starter with a Vast Amount of Customer Service, Sales and Technical Support Environment in a Call Centre (10+ Years) Setting and in Person. A Leadership Role Building and Maintaining a Strong, Loyal, Satisfied and Educated Customer Base. Acquired Unique Skills Dealing with People from a Variety of Cultural Backgrounds, Range of Ages and Diversity Needs. Languages: English (Native), Greek (Fluent) and Spanish (Beginner) Skill Strengths Organized and Innovative Approaches to Tasks Efficient & Productive Service with Quality & Measurable Outcomes Ambitious and Open Minded - Can Do Attitude, with a Smile! Understanding Internal/External Customer/Business Requests/Needs Evaluating Information and Providing - Best Fit Solutions Informing Clients about Additional Value Added and Benefits by Up & Cross Selling Products and/or Services Educating Clients about Alternative Time Saving Channels of Service/Information Promoting Our Brand Name and Business and/or Industry Troubleshooting and Problem Solving Instilling Confidence to Clients Proactive Attention to Details and Excellent Photographic Memory Well Developed Technological Knowledge, Processes and Practices.

$22.22 /hr
9 hours

James Addis

James Addis

All round technical chap

United Kingdom - Tests: 3

I am from a network environment mainly LAN and WAN networks I also have experience security testing wifi networks In the past I have worked with PBX's and other VOIP technologies including SIP trunks. Also experienced desktop support both hardware and operating systems such as Microsoft windows xp, vista, 7 and basic linux Setting up routers PPTP VPN and basic IPSec VPN Wireshark Microsoft office Wireless / wifi security testing "WPA. WPA2, WEP" Data entry Transcription

$13.33 /hr
0 hours

Kunal R.

Kunal R.

Web, Desktop & Mobile Application Developer

India - Portfolio: 5

Muster in Computer Applications, new in Windows & Web based software/App developer with 7 years of experience. Having sound knowledge and skill set of Multimedia & UI designing. Services offering - Windows (Desktop) & Web based software/App development, Website Development (Joomla, Drupal, Magento, HTML 5) Software UI designing, Whiteboard Video Ads Creation, Website Hosting Domain Registration Domain transfer DNS propagation CRM, SIP Protocol implementation (App based phone calling, Web to Phone calling) Few of the projects I have done successfully: (Software Development) (Software Development) (Website Development) (Website Development, CRM Development & Support) (Website Development, Hosting & Support, SIP protocol integration) (Hosting & Support) (Website Rededevelopment & Support)

$10.00 /hr
0 hours

Young J.

Developping in Asterisk,Expert at SIP,FFMpeg,VoIP,C,PHP,MySQL,

China - Tests: 3

Expert at the protocol of SIP,Engineer Senior Asterisk, Strong experience on the Develope of asterisk, VOIP system design,Voip app on Android,ffmpeg on Android. I can do anything in asterisk,because i have the ability to develop in the source of asterisk and have my produce of ippbx based asterisk. I also provide consulting service on system design/structure and solutions for SIP,VOIP,IMS.

$55.56 /hr
0 hours