Freelance Developer

at 4z.com (Anywhere)

Job description:

4z.com is looking for a motivated and experienced developer with the following profile for an immediate hire as a freelancer:

Engineer with knowledge of mathematics and analytic thinking.

We require not only coding skills but analytic thinking, experience in processing of large data sets, in optimization of algorithms. PhD or Master Degree in computer science and telecommunication is welcomed.

Programming/coding skills:
(Average of several thousand lines per project)
-Programming: C, C ++
-Scripting: bash, perl, python, PhP
-Databases: MySQL
-Administration of UNIX / Linux servers-Network knowledge: IP protocol (TCP / UDP), IP address / IP routing, sockets
-VoIP: SIP, Asterisk, FreeSWITCH, Kamailio-Traffic Analysis Tools: ngrep and wireshark
-Redundancy, cluster, cloud concepts
-Knowledge of DNS, IMAP, SMTP, LDAP, Dovecot

You will participate in all operational processed such as:
Analysis of the current network
Optimization of the network infrastructure
Generation of statistics
Analysis of network data
Development of fraud detection and prevention systems
Development of new monitoring systems
Comparison of various telephony systems and stress tests
Generation of large number of calls for stress tests
Comparison and diagnostic of various voip billing solutions
Benchmark of various voice and video codecs
Participation in the development of new services

You are:
-A motivated, organized, dynamic person with a common sense with an analytic thinking and fundamental knowledges.
-You have the ability to concentrate on the current project.
-The will to complete your projects is in your nature.
-You document your own work


Send your CV and motivation letter to
Put in the subject: [2'i58'1 developer] Name Surname

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Published at 09-05-2018
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