Top Upwork Freelancers

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  1. Juan Pablo Lorenzetti

    System Enginner

    Belize - Last active: 26 days ago - Tests: 2

    i have more than 10 years experience in the telecommunication field. (mostly in small companies, a 1 man IT dept.) Skills on: 1. administering and setting up platforms for services (prepaid cards, IVR, sms, etc) 2. developing software to perform tasks and/or provide services. 3. Strong background developing using open source software for different tasks/services. 4. Web development using php/javascript (jquery, etc) 5. strong knowledge in the linux OS and its tools (automating tasks, bash scripting,etc) 6. strong knowledge in the C/C++,pyhton,perl,java. 7. Integration of platforms/services. Latest projects of the past 3 years (list is too long otherwise): 1. Implemented a AAA, using open source software, for a 3G WCMDA network. 2. Implemented a company PBX with more than 150 extensions, interconnected to the PSTN with personalized scripts for the various dept within the company. 3. Implemented a 15+ call center using a virtual PBX, using open source software, the call center did not have infrastructure, the physical PBX was located at an operator and the agents used mobiles to receive calls, all features were implemented such as queues, welcome message, email sent to agents for missed calls, voicemail, after hour annoucement, etc etc 4. Implementation of different protocols to interconnect with various elements within a telecom network, such as MML interfaces for service provisioning, smpp to provide sms based services, radius/diameter to provide real time charging, etc etc 5. etc

    $16.67 /hr
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  2. Thomas Rectenwald

    AWS and Linux Engineer

    United States - Last active: 8 days ago

    I have 15 years of working in IT. My core specialization is Amazon Web Services (AWS) for which I have achieved all three associate level certifications, as well as the Solutions Architect professional certification. I am also highly skilled in Linux/Unix administration, along with virtualization platforms such as Citrix XenServer and VMware ESXi. I'm well versed in scripting and development with a variety of languages, including Python, PHP, Bash, SQL, and JSON. In addition to technical skills, I place a high value on documentation and take great care and pride in delivering exceptional results.

    $44.44 /hr
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  3. Hanley Hansen

    Hanley Hansen

    Web & Mobile Application Developer

    United States - Last active: 5 months ago - Tests: 3

    Web and mobile application developer focusing primarily in development on the LAMP stack, Python/Django, and on iOS and Android development. I develop web applications to interface with financial applications written in C++. Technology enthusiast who loves to learn about everything and anything. Fluent in English and Spanish.

    $50.00 /hr
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