y yannick@mccabecosta:~/work
available for projects · Macclesfield, UK
cat history

Work, in reverse.

Eight roles over fifteen years — voice infrastructure, network architecture, leadership, and a brief but formative spell at the front of an Apple store. Listed newest first. The current role is marked.

span2008 → present
roles8
active1
domainvoice / networks / infosec
# timeline active now
 2008    2010    2012    2014    2016    2018    2020    2022    2024   2026
   │       │       │       │       │       │       │       │       │      │
   ├───── Poynton Workmens ──────┤
                            ├Apple┤
                                ├──── Nexbridge ───┤
                                        ├─ Wonderful ─┤
                                                    ├── TruSIP ──┤
                                                                ├Cnx┤
                                                                    ├CloudCall┤
                                                                              ├─ RocketPhone 
01now

Head of Telephony Engineering — RocketPhone.ai

Leading telephony engineering in the voice-intelligence space — PSTN, GSM/LTE, Teams and enterprise voice integrations. WebRTC media path, SIP carrier interconnects, observability and the kind of dial-tone reliability nobody notices until it goes.

SIPWebRTCKamailioAsteriskTeamsK8sGCP
2025 — now1yrs 2mo
02

Principal Telephony Engineer — CloudCall

Architected voice for an AIM-listed cloud telephony platform — multi-region carriers, recording at scale, the bridge work between CRM and the PSTN.

AsteriskKamailioPHPAWSHA voicek8s
2023 — 252yrs 2mo
03

Head of SIP — Connex One

Took the SIP function from a single Asterisk box to multi-DC, multi-carrier delivery. Stood up monitoring, runbooks and the on-call rotation.

AsteriskOpenSIPSKamailioCarriersMulti-DC
2022 — 230yrs 10mo
04

Senior Voice Developer — TruSIP

Asterisk, Kamailio and the PHP that holds a wholesale SIP business together. Built the customer portal everyone still uses.

AsteriskKamailioPHPMariaDBRabbitMQ
2019 — 222yrs 4mo
05

Network Architect & Voice Full-Stack — Nexbridge Communications

Five years of doing all of it — racks and routers, IP voice, customer-facing tooling, on-call. Where most of my carrier-grade instincts were forged.

BGPOSPFMPLSAsteriskpfSensePHP
2014 — 195yrs 2mo
06

Operations Director & Lead Developer — Wonderful Organisation

Ran the operations side of a fundraising platform — and wrote the platform that ran it. Tight loop between product and ops.

PHPElasticsearchStripePostgresAWS
2017 — 192yrs 8mo
07

IS&T Operations Administrator — Poynton Workmens Club

The kind of part-time role where you end up rewiring the building. Started at sixteen. Taught me to do more with very little.

LinuxNetworkingHardwareEPOS
2008 — 167yrs 10mo
08

Specialist — Apple

Front-of-house at the Trafford store. Where I learnt to talk to people about technology without losing them in the jargon.

PeopleTranslationRetail
2013 — 149 mos

Stack & expertise.

# aggregated across every role above (113 distinct skills)

802.11 technologies active directory amqp android asset management asterisk aws bash bgp bind9 bootstrap caches capistrano captive portals carp carrier relations compliance containerisation cron css3 datacentre management debian dhcp disaster planning disaster recovery distributed infrastructure dns docker eigrp elasticsearch firewalls foss front of house gcp git github google cloud platform group policy hipaa html5 hypervisors iis imap interconnects ipv4 ipv6 iso22301 iso27001 iso9001 java javascript kamailio kubernetes ldap leadership linux load balancers mail servers management membership memcached microsoft office mifid mpls mysql network capacity planning network infrastructure network management networking noc operations nodejs opensips ospf pbx pci dss php php5 php7 point-of-sale postgresql presentation proxmox rabbitmq radius redis retail rfc3261 rfc7519 rtp sales server management sips smtp source control split-horizon dns srtp ssh stock control stocking stripe team building team management telecommunications virtualisation vlan vmware web application firewalls web servers windows wireguard wireless mesh infrastructure wireless network infrastructure wss
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