Head of Telephony Engineering

RocketPhone.ai - London, UK

Summary and 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.

Tenure (0yrs 9mo):

I started this position in April 2025 and am currently here.

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 and available on GitHub: https://yannickmcosta.github.io/simple-sip-socket-softphone.


Back to employment list

Pertinent Skills

amqp  asterisk  aws  bash  bgp  carrier relations  compliance  containerisation  cron  datacentre management  debian  disaster planning  disaster recovery  distributed infrastructure  dns  docker  firewalls  foss  gcp  git  github  google cloud platform  hipaa  html5  hypervisors  interconnects  ipv4  ipv6  iso27001  iso9001  kamailio  kubernetes  leadership  linux  load balancers  mifid  mpls  mysql  network capacity planning  network infrastructure  network management  networking  noc operations  opensips  ospf  pbx  pci dss  php  php7  proxmox  rabbitmq  rfc3261  rfc7519  rtp  server management  sips  source control  srtp  ssh  team building  team management  telecommunications  virtualisation  vlan  vmware  web application firewalls  wss 

Company Info

RocketPhone.ai
rocketphone.ai
London, UK