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Rareș TirboiuRexum · Rareș Tirboiu
Head of AI & Automation

Rareș Tirboiu

I build AI voice agents that answer the phone for your team, with a voice that sounds like a person, not a robot: they book straight into your calendar, confirm by SMS and carry the conversation on to WhatsApp and your website. In real time, around the clock.

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24/7
answering the phone
~2s
to pick up
0
missed calls
native
Romanian speaker

Track record

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Voice
Answers on the first ring, at any hour: a calm voice holding a real conversation: not a keypad menu, not a looping robot.
Calendar
Bookings land straight in your calendar, in real time: it checks availability, offers the open slot and confirms on the spot: no double bookings, no notebooks.
Flexible
Reschedules and cancels safely when a client calls back: it recognises the booking and moves the time without pulling anyone off the floor.
Confirmations
Sends SMS confirmations and reminders before the appointment: fewer no-shows, and nobody on your team spending the day on the phone.
Language
Speaks native Romanian: service names, prices, opening hours: no clumsy translations, no foreign call-centre accent.
Messages
Replies on your website and on WhatsApp with the same brain: the client gets the same answer whichever door they come through.
Integration
Plugs into what you already run: calendar, CRM, booking system, your own APIs: you don't have to replace anything to start.
Control
Every call is transcribed and monitored: you see what was asked, what was booked and exactly where a client would have been lost.
Web
Fast websites built to convert: the same restrained aesthetic, the same care for what happens after the click.

Background

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I started out in engineering and ended up building artificial voices for businesses that live on appointments: clinics, salon groups, showrooms, field services: places where the phone rings exactly when nobody can pick it up. My work looks more like a very good receptionist's job than classic programming: the system answers, understands what the caller wants and puts the booking in the calendar: without getting the time wrong, without leaving anyone waiting.

A missed call isn't a statistic: it's a client dialling the next name on their list. Between the hours you work and the hours clients look for you there's a gap, and that's where the revenue you never even see disappears. That gap is what I close: evenings, weekends, and the hours you're already with a client in front of you.

I don't ship pretty demos. I ship systems running in production with real clients on the line: every call listened to, every booking verified in the calendar before I call it done. Sofia, the voice agent built for Noir by Fadileh, was made exactly that way: she takes the salon's calls, books and confirms on her own.

Everything I deliver runs through Shizuo, my AI automation studio, under one standard: quiet systems that work without calling you at night.

Highlights

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What I deliver

  • AI voice agents that take calls and book appointments
  • Chat automation: website and WhatsApp
  • Links between the tools you already use
  • Premium, fast websites built to convert

How I work

  • One scoping call: what gets asked on the phone, in your own words
  • A prototype you can talk to, not slides
  • Tested on real calls before go-live
  • Handover with monitoring: you're not left alone with it in week one

Stack

  • Real-time AI voice (Vapi) and text messages (Twilio)
  • Live calendars: Cal.com, Google Calendar
  • Custom links between systems, watched on every call
  • Top AI models, chosen on how fast they answer and what they cost

Who it's for

  • Businesses with real call volume, where every missed call costs
  • Clinics, salon groups, showrooms, field services
  • Teams that want a system in production, not an experiment

Studio

  • Shizuo: AI automation studio: voice agents, chat and system links
  • Engineering: Bachelor's degree (B.Eng)

Standard

  • Quiet systems, monitored on every call: running without calling you at night

Articles written

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Official Website

shizuo.net
Click hereRareș TirboiuFull portfolio & contactshizuo.net

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