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PortaOne is a leading global software developer for modern telecoms. The company’s billing (B/OSS & OCS) and switching (SBC & Class 4/5) products enable telecommunication service providers and carriers to run a broad line of retail, enterprise, SME, and wholesale services on a single integrated software platform.
6 сентября 2019

Middle/Senior Python Software Engineer (вакансия неактивна)

Киев, Львов, Сумы, Чернигов

Необходимые навыки

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

Будет плюсом

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


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


• 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

О проекте

PortaOne creates software solutions enabling telecommunication service providers and carriers to offer multiple voice, data, and converged services on a single platform named PortaSwitch.
PortaOne products are built around a converged carrier-grade billing platform combined with a class 4-5 SIP softswitch and media applications for conferencing, IVR and unified messaging.
Our billing is RADIUS based and compatible with major SBC and media gateway vendors. It can process real time prepaid and postpaid charges for voice and video calls, Internet connectivity, MVNO and IPTV services, WiFi/WiMAX access, data and faxes, or one-time events such as SMS or a pay-per-view movie.
PortaSwitch is a unified platform for telecommunication service providers, wholesale carriers, ISP, MVNO and NGN operators for unifying voice, messaging, and data traffic within a single converged network.
PortaSwitch provides various prepaid, postpaid, retail and wholesale telecommunication services, including calling cards, Vonage- and Skype-like services, CLEC type services, MVNO & MVNE, ISP, WiMAX & WiFi and much more. It includes 2 main components:
PortaBilling, a business and operation support system (B/OSS) designed for telecommunication service providers to manage end-to-end telecom service networks.
PortaSIP is a clusterable and highly scalable SIP softswitch of class 4 and class 5 with media application that plays IVR (voice prompts). It offers a variety of both advanced class 5 features for hosted IPPBX or IP Centrex services as well as the majority of functionality normally attributed to session border controllers (SBC).