Sr UC/ VOIP Engineer-Philadelphia, Pennsylvania

Sr UC/ VOIP EngineerLocation: Philadelphia, PennsylvaniaPosition Type: ContractWork Status: US Citizen/Green CardRate: DOE (C2C/W2/1099)Essential Functions:Responsible for design, configuration, and support of a resilient (clustered) IP based PBX across two data centers.Participate / Lead multi-discipline design teams to provide solutions and capacity planning of equipment and VoIP infrastructure including trading turretsDesigns, develops, configures and sustains engineering support of VoIP network interfaces to the PSTN including; IP SIP switch, Application Server, Media Gateway, and Session Border ControllersProvide Tier 3 team escalation and interface with vendors to resolve all issues as requiredResponsible for researching emerging technologies with respect to unified communications to address client business needs and requirements.Responds to issue escalation and service interruption as a confident technical leader.Provide Operation Support on & off hours, build and/or upgrade support.Develops standard configurations, procedures and guidelines for selecting, installing and deploying integrated solutions and platforms within the VoIP environmentKeep abreast of industry and technology trends, available products and services in support of IP Telephony / CollaborationCreate design documentation including "as built" documents, design summaries, migration plans, and Visio diagrams as appropriate.Maintains effective external relationships with vendors, consultants, and service providers; leverages these relationships to ensure that the best fit solutions and resources are available to the firm.Essential Qualifications:7 – 10 years of experience in engineering and supporting large, carrier grade, multisite network deployments.In depth experience with Cisco Unified Communications Manager v10.55 years experience with switch translations, session management, session border controllers, SIP Lines/Trunks, and media gateways5 years experience with Unity Voicemal, Jabber, Webex, and VCS Expressway3 – 5 years experience deploying and supporting collaboration tools using integrated voice, video, and data architecturesExperience with IPC Unigy 2.0 Turrets / Hoot& Holler (IPC)Experience with Internet routing protocols, TDM, SONET, and voice technologies (SS7/C7, SIP, MGCP), VMWare, Linux Appliances, and SAN StorageFamiliar with database concepts and client&;server conceptsRequired Skills/Competencies:In depth experience with VoIP networking / technical proficiency in LAN/WAN architecturesExperience with CUCM, Unity Voice Mail, Cisco 29xx / 39xx routersExperience with implementation and operation of virtual infrastructures.Functional knowledge of core networking conceptsRegimented change and release management methodology.Experience with current best practices in IT standards, principles, and security practicesExcellent technical documentation skillsExcellent communication, interpersonal, and mentoring skillsRequired Certifications/Registrations:N/ARequired Years of Experience:5+Preferred Education/Experience:Bachelors Degree in engineering, computer science, or related disciplineITIL v3 Certification in Service DeliveryWorking knowledge of financial industry.