Middle/Senior Python Developer (offline)

PortaOne, a company created by Ukrainians in 1997, is now a global software developer for modern telecommunications.
The PortaOne platform, PortaSwitch, is a fundamental part of the business infrastructure for more than 470 service providers and telecommunications companies in ~ 90 countries.

Application domain
VoIP Softswitch/PBX (back-to-back user agent, IVR)

Required Skills/knowledge:
• 5+ years of experience in software development
• Python: 3+ years of experience with Python system programming
• Development environment: Unix/Linux
• Good coding techniques: re-usability of code, code optimized for performance, ability to work with legacy code, code refactoring techniques
• Strong understanding of network technologies and protocols (TCP/UDP, NAT, DNS, IPv4/IPv6) Good knowledge of OOP, OOD principles
• Good written English is a must; good spoken English is a plus
As a plus:
• Experience with VoIP/VoLTE, SIP, RADIUS, Diameter, PBX, WiMAX, Cisco
• Knowledge of SIP, Radius, Diameter protocols, WebRTC technology
• Experience with GIT/Gerrit

Soft skills:
Ability to work independently to devise and execute a plan of action, professional discipline, ethics, ability to follow rules and standards. Respect for others, continuous learning, initiative, teamwork, analytical thinking, improvement and innovation, flexibility

Responsibilities:
• Participate in low-level design reviews
• Code new software components from start to finish with minimal instruction
• Participate in code reviews of own and others' work
• Document low-level designs based on high-level specifications

We offer:
• Professional Development— experienced colleagues who are ready to share knowledge
• We provide solutions to 470 operators from 90 countries. In the modern world, our product is necessary, and this means that you will be in business, with interesting challenges and a stable income
• Each of our projects is different
• We have high standards of programming and continuous improvement of processes, without unnecessary bureaucracy
• Paid vacation and sick leaves
• Competitive salary in USD
• Team buildings and corporate events
• Cozy office in the city center with lots of delicious benefits and a relaxed, friendly environment

About PortaOne

Founded in 1997 as a project team within Telenor
Incorporated in 2000 in Vancouver, Canada
Privately owned
Employees: ~300
over 50% in technical support
1/3 in project management, software design and development, quality assurance and testing

Company website:
http://www.portaone.com