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Eseoghene S.
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Eseoghene S.

VoIP & SIP Engineer | Carrier Infrastructure | SBC | AI Voice

Working with telcos, SaaS companies, MSPs, and ITSPs; I design, build, and troubleshoot production-grade VoIP infrastructure — and connect it to the business systems that depend on it. My experience spans launching new multi-tenant voice platforms to troubleshooting complex SIP interoperability issues, integrating carriers, deploying Session Border Controllers (SBCs), and automating telecom operations through APIs. I mostly work with open-source technologies because they provide the flexibility and control needed to build scalable, cost-effective communications platforms. A recurring theme in my work is the point where telephony meets ERP and CRM. At one organisation I deployed FreePBX as a business contact centre alongside a full Odoo ERP rollout (CRM, contacts, invoicing, inventory, sales, purchasing) and a multi-user SuiteCRM deployment, then integrated them: call activity captured from Asterisk AMI and CDR data, and written back against the corresponding records through the Odoo API. I understand both the voice side and the business-systems side of that work, and the operational realities of keeping the two in step. I have experience designing and deploying solutions based on Asterisk, FreeSWITCH, Kamailio, OpenSIPS, RTPengine, FreePBX, FusionPBX, 3CX, Twilio, Telnyx, WebRTC, Odoo, SuiteCRM, and related technologies. Examples of work I have done include: • Multi-tenant UCaaS and hosted PBX platforms • SIP routing, carrier interconnects, SBC deployment, and NAT traversal • SIP trunk integration and interoperability troubleshooting • High-availability VoIP infrastructure • Contact centre deployment with call logging integrated into ERP and CRM platforms via Asterisk AMI/CDR and the Odoo API • Provisioning automation for users, phones, DIDs, trunks, and routing • REST API integrations and telecom workflow automation • AI voice platform integration using SIP and WebRTC • Production troubleshooting for call failures, registration issues, one-way audio, TLS, and media problems I enjoy solving the problems. Whether it's improving call reliability, integrating a new carrier, scaling an existing platform, connecting a phone system to the ERP or CRM behind it, or automating repetitive operational tasks, I focus on building solutions that are maintainable, well documented, and ready for real-world traffic. If you're looking for someone who understands both the technical details and the operational realities of running a VoIP platform, I'd be happy to discuss your project.

🇳🇬Lagos, Nigeria$55/hr100% JSS5.00 (5)Since Aug 2021

Earnings and projects

MRR
$508

Last 6 months ÷ 6

World#77,284 / 412k
🇳🇬Country#2,134 / 13.8k
Revenue, last 30 days
$173

Last 6 months: $3k

World#84,535 / 412k
🇳🇬Country#2,697 / 13.8k
Total earnings
$11k

Billed in all: $11k

World#192,331 / 412k
🇳🇬Country#3,794 / 13.8k
Per project
$1.2k

$610 in the last 6 months

World#112,356 / 412k
🇳🇬Country#2,036 / 13.8k
Projects, last 6 months
5
40% fixed60% hourly
World#41,746 / 412k
🇳🇬Country#2,705 / 13.8k
Projects in all
9

Across 10 contracts

60% fixed40% hourly
World#212,270 / 412k
🇳🇬Country#7,852 / 13.8k

Earnings, last 30 days

$11k+$173 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$10.8k$10.9k$11.0kOct 9Oct 24Nov 8

Skill rankings: Top 9% in OpenSIPS

Ranked by MRR among everyone on Upwork with the skill.

  1. 3OpenSIPS35 freelancers · 🇳🇬 #1Top 9%
  2. #6Kamailio45 freelancers · 🇳🇬 #1Top 13%
  3. #15VoIP PBX85 freelancers · 🇳🇬 #1Top 18%
  4. #15FreeSWITCH85 freelancers · 🇳🇬 #1Top 18%
  5. #16FreePBX120 freelancers · 🇳🇬 #1Top 13%
  6. #263CX93 freelancers · 🇳🇬 #3Top 28%
  7. #29Session Initiation Protocol106 freelancers · 🇳🇬 #1Top 27%
  8. #35Asterisk211 freelancers · 🇳🇬 #2Top 17%