SIP Engineer

View full description

Requirements:

• 2+ years of hands-on Session Initiation Protocol (SIP) experience
• 2+ years of experience with Linux-based telephony applications: HMP, Asterisk, SIP, VoIP/FoIP, OpenSIPS, Freeswitch
• Experience with T.30 and T.38 faxing protocols
• Experience with cloud computing (AWS, Azure, etc...)
• Experience with operating and troubleshooting enterprise scale SIP communications platforms
• Experience with Nagios scripting, Fax/Voice Server Hardware, Perl, Python, PHP, Disaster Recovery
• Experience with any of the following is desirable: ElasticSearch, Puppet, Postfix, Zabbix, DataDog, Grafana
• Proficient with Jira, and Confluence
• Excellent written and spoken communication skills are required.
• Multi-tasking, self-motivated and project oriented.
• Consistently exhibits a personal accountability to outcomes to all team members, peers, and stakeholders
• Assess necessary activities and prioritize for completion of assignments using excellent time management, prioritization skills, and work ethic
• Interface effectively with various levels of employees
• Learn multiple aspects of existing, newly-added, or planned voice/fax platforms and understand how they all connect
• Solve problems by considering available information, prioritizing, and making timely decisions; correlate data and understand business and technology tools and approaches, spot trends, and apply sound management principles
• Work individually, within a team, and with other groups

Responsibilities:

• Resolve assigned trouble tickets and maintain accurate status in the company ticketing system
• Provide expert support for SIP/telephony application infrastructure: Asterisk, FreeSwitch/OpenSIPS, HMP APIs, etc…
• Provide expert level analysis of SIP call flows, including problem isolation and resolution
• Interact and cooperate with carriers and partners to continually improve call delivery reliability and quality
• Prepare documentation, status reporting, policies, procedures, and reports for the management team
• Support open-source as well as proprietary applications/services
• Manage tasks and projects and ensure all items are tracked in the ticketing system and being handled in a manner that meets or exceeds established SLAs
• Handle multiple simultaneous competing priorities and deliver solutions in a timely manner
• Participate in an on-call rotation, providing support during off hours for incident escalation and resolution.
• Provide customer service to internal customers
• Promote teamwork within the team and foster cooperation with other groups and departments
• Demonstrate initiative and dedication, as well as an ability to work independently once general direction is given
• Provide detailed information through effective written and verbal communication
• Participate in and enforce the change control, production control, and release management processes
• Create structured testing/replication methodology and summary finding reports to support issue resolution
• Evaluate new hardware, software and services specific to SIP call handling and delivery, and present recommendations along with supporting documentation to facilitate purchasing decisions
• Develop, implement, and maintain script-tooling and applications in shell-script, Perl, Python, PHP, or other scripting languages
• Other duties as assigned by management
• Perform other duties and responsibilities as required, assigned, or requested. Consensus reserves the right to add or change duties at any time.