y yannick@mccabecosta:~/work
available for projects · Macclesfield, UK
cat work/01-rocketphone.md

Head of Telephony Engineering — RocketPhone.ai

London, UK · currently here · since April 2025 · 1yrs 2mo

Summary & background

RocketPhone is an AI-powered unified communications platform designed for seamless Salesforce integration. Offering voice, cellular and video capabilities alongside AI-driven call transcription and real-time agent assistance, RocketPhone serves sales teams, customer service departments and financial services organisations across the UK and beyond.

My place in the company

As Head of Telephony Engineering, I architected and implemented a full SIP carrier infrastructure from the ground up, building it with failover redundancy, round-robin load balancing and Least-Cost Routing (LCR). A significant portion of my role involves managing carrier relationships and ensuring interoperability between our platform and upstream providers.

Launched RocketCell, a UK Mobile Virtual Network Operator (MVNO) backed by EE's network infrastructure, providing mobile connectivity that integrates directly with the RocketPhone platform.

I developed a fully cloud-scalable PBX solution built on modern cloud-native architecture spanning GCP and Hetzner Cloud. This platform is designed for horizontal scaling to meet customer demand as the business grows.

Additionally, I developed a WebRTC-based softphone with JWT authentication compliant with RFC 7519, enabling secure, browser-based communications for our customers. This project is open-source: simple-sip-socket-softphone.

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