Analysis Skills, Ansible, Automation, Call Routing, Cisco Network Systems, Communication Skills, Documentation, G.711, G.729, High Availability, Identify Issues, Incident Management, Incident Response, Internet Telephony Service Provider (ITSP), Leadership, Negotiation Skills, Network Support, On Call, Operational Improvement, Oracle, Packet Flows, Patient Assessment, Presentation/Verbal Skills, Problem Solving Skills, Production Systems, Python Programming/Scripting Language, QoS (Quality of Service), Realtime Transport Protocol, Root Cause Analysis, SIP (Session Initiation Protocol), SSL-TLS (Secure Socket Layer - Transport Layer Security), Technical Support, VoIP (Voice over IP), Wireshark (Ethereal), Writing Skills
Job Title: VoIP / SIP Network Support Engineer
Long-term Contract Opportunity
No Sponsorship
Location: Onsite, Plano, TX
Overview
We are seeking a highly skilled VoIP / SIP Network Support Engineer to support and troubleshoot real time voice services in a production telecom environment. This role focuses on rapid incident triage, deep SIP and media analysis, and effective coordination with internal teams and external vendors to ensure high service availability and call quality. The ideal candidate has hands on experience analyzing SIP signaling and media flows, understands telecom network behavior, and communicates clearly during high severity incidents.
Required Qualifications:
Experience with Ribbon PSX, Neustar.
Experience with industry-leading Client platforms (Cisco, Ribbon/Sonus, Oracle/Acme Packet, AudioCodes)
Strong hands on experience troubleshooting SIP and VoIP in carrier or enterprise environments
Ability to analyze SIP call flows, packet captures, and signaling logs
Solid understanding of telecom network behavior, including call routing and failure scenarios
Experience with monitoring systems, alert response, and incident triage
Working knowledge of RTP and media fundamentals (jitter, packet loss, QoS, MOS)
Strong understanding of SDP and codecs, including G.711, G.729, Opus, and DTMF methods
Familiarity with Clients and SIP trunking architectures
Experience with secure signaling and media, including TLS/mTLS and SRTP
Proven discipline in incident management, escalation, and followthrough
Excellent verbal and written communication skills, especially during high severity incidents
Preferred Skills:
Exposure to automation tools (e.g., Ansible, Python scripting).
Experience working with telecom carriers or managed voice service providers
Exposure to packet capture tools (e.g., Wireshark) and call analysis platforms
Experience supporting 24x7 or on call production environments
Responsibilities:
Troubleshoot complex SIP and VoIP issues impacting call setup, call quality, and service availability
Analyze SIP signaling flows, call traces, and logs to identify root causes and failure patterns
Monitor alerts, respond to incidents, and perform realtime issue triage in a production environment
Investigate RTP/media path issues, including jitter, packet loss, latency, QoS, and MOS degradation
Validate and troubleshoot SDP negotiations, codec selection, DTMF methods, and media compatibility
Support and coordinate Client and SIP trunk operations, including interop issues with carriers and vendors
Work with secure voice implementations using TLS/mTLS for signaling and SRTP for media
Participate in incident management and escalation processes, ensuring proper ownership and resolution
Provide clear, concise incident communications to internal stakeholders, leadership, and external vendors
Contribute to post incident reviews, documentation, and operational improvements
E
Elan Partners
Élan Partners, a woman-owned, WBENC certified, professional staff augmentation firm specializing in Technology and Engineering, is headquartered in Dallas, Texas. Our expertise is derived from more than twenty years of delivering customized staffing solutions to a host of technical clients, including Medical, Healthcare, Financial, Manufacturing and Software/Hardware Development industries.
Our team has an average of 15 years recruiting for technical disciplines as well as an average of 10 years working together in that capacity. A result of this tenure is an extensive referral network from with which we are able to find the most difficult skill sets. The pride we take in our work is apparent in the results we produce that are achieved through teamwork, a commitment to quality and unwavering belief in integrity.
Employers – Industry leaders who desire to obtain the best possible talent are realizing the importance of partnering with a reputable staffing firm invested in ethical business practices. Élan Partners is that firm. Our methodology is proven and efficient. We will not inundate you with unqualified resumes. Our only request is an open line of communication so that we can effectively provide you with the most qualified candidates. Our philosophy is to ensure every company we work with becomes a client for life.
Job Seekers –Picking the correct firm to represent you is an important decision. Relationships are important, as mentioned above. We strive to ensure every company we work with becomes a client for life. The same holds true for our candidates and consultants – (In fact, 50% of our client base is derived from candidates we have worked with in the past who are now in hiring positions). Élan will never present your resume without your consent and will only present career opportunities that are right for you. You can trust our recruiter is someone who understands respects and appreciates your search. We will always represent you accurately, fairly, with great confidence and discretion.
Élan continues to meet the evolving challenges of workforce flexibility with staffing solutions tailored to your precise business needs. We offer a number of flexible services to meet a variety of different needs:
• Contract Staffing
• Contract to Direct
• Permanent/Direct Hire Placement
• Single Source Staffing
• Payroll Services
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http://www.elanpartners.com