Key responsibilities:

• Explore, test, and enable VoIP, FoIP, Telephony components as needed.
• Enable and integrate carrier sip PSTN connecting in to the RingCentral network.
• Interop testing and turn-up of carrier SIP peering trunks.
• Design and grow HA carrier configurations with carriers and RingCentral VoIP components.
• Diagnose, trouble shoot, resolve service issues related to VoIP and FoIP telephony platforms and applications.
• Responsible for maintaing call routing logic that incorporates Least Cost Routing.
• Participate in shared on call support rotation.
• Apply and audit security vulnerabilities of VoIP components.
• Study trends, and participate in scaling adjustments for capacity of components, resources and sessions.
• Work with Engineering teams to collaborate on solutions and approach for persistence issues.
• Use vendor portals and internal tools to track capacity.

Requirements:

• A desire and  passion for working with new products and ideas to create proof of concept configuration and solutions.
• An assertive attitude to take initiative in seeking out solutions for problems to optimize performance and automation.
• Analytical approach to troubleshooting and problem solving that is strong in isolation triage and correlation.
• Team and cooperative work ethic and approach.
• Understands business requirements capture and prioritization.
• Explore solutions to problems with consideration of full sense of ownership.
• Ability to interact with cross functional teams including Network, Engineering, Development, Marketing Support, NOC at technical and business level.

Skills and working experience with:

• Empirix - Hammer.
• QoS and Network optimization and experience related to VoIP and FoIP.
• Sipp call generator.
• Sip protocol - trunks, user agents, registration, sdp, rtp .
• Soft switches such as Kamailio OpenSer.
• Border Controller - Natpass;Acme Packet .
• Media Resources - Convedia.
• Experience with FOIP & T.38.
• MySQL db - schema, stored procedures and functions, create, insert, alter, grant, query.
• Oracle db - schema and queiries.
• SVN- check in, check out, export, merge.
• Linux - redhat, centos administration experience.
• Scripting - bash,php, perl.
• Windows 2003 server and up.
• TCPIP stack and Networking knowledge.
• Deep log diving and interpretation - grep, ngrep.
• Wireshark - pcap tcpdump experience.
• Working with carriers for ordering, managing and managing Voice services for  local, Tollfree, and International inbound and outbound voice services.
• Global PSTN dialplans and call routing.
• Experience with global PSTN trunking, carrier network knowledge terminology.
• Experience with Access Control, Port and Protocol filtering, methods related to firewalls and network control points.

Conditions:

• Well coordinated professional team.
• Cutting edge technologies, interesting and challenging tasks, dynamic project, great opportunities for self-realization, professional and career growth.
• Corporate training programs, English language courses.
• Business trips and further work in foreign branch offices (including H1-B U.S., Philippines, China).
• Job placement and payment of salary take place according to the labor code.
• Individual and team bonuses.
• Sick leaves 100% paid.
• 28 day vacation 100% paid in accordance with the current salary.
• Medical assistance (voluntary health insurance, dental insurance, office doctor).
• Great working conditions, modern business center, cycle parking, equipped kitchens, tea, coffee, soft drinks and sweets.
• Corporate events, trips, sports.
• Office in 10-minute walk from the subway.
• Nonresident applicants granted Relocation Bonus and help in finding accommodation in St. Petersburg.