Olisa Umenyiora

AI Engineer & Web Designer

About

I'm an AI engineer and web designer based in Manchester, with 6 years of experience across design and full-stack development. I build the interface, the back end, and the AI that ties them together, and I care as much about how a product feels to use as how it works. I like working with a team to take an idea from a rough sketch to something people rely on. Recent work includes CallsPicked and Avicroft, two live AI products built with Next.js, Supabase, and the OpenAI and Claude APIs.

AI engineering · Voice & language agents · Web design · Full-stack · Digital marketing

Work

CallsPicked
An AI communication employee for local service businesses. It answers the phone in a natural voice, books appointments straight into the calendar, replies on WhatsApp and runs the socials. I built it solo: real-time voice on the OpenAI Realtime API and Twilio, a multi-tenant Next.js and Supabase product, shipped on Vercel and Fly.io.
callspicked.comLive
Open the live site
Voice AIOpenAI RealtimeTwilioNext.jsSupabaseFly.io
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Avicroft
Multi-tenant software I built from scratch. It handles bookings, products, staff, customer rewards, and storefront websites. There's a full admin to manage everything, but also an AI command bar so you can just type what you need. Want to book an appointment, add a customer, or change a schedule? Just say it and it's done. Built on a Claude command bar with 50+ tools, Next.js and Supabase.
avicroft.comLive
Open the live site
Claude AI50+ AI toolsMulti-tenantNext.jsSupabaseStripe
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olisa.io
This very site, and the thing hiding under it. Below the portfolio is a working retro operating system I build for fun: Windows XP, 98, 7 and Mac OS 9, all from one shared set of components, with draggable windows, real little apps, and Oli, an AI ant colony that lives in the system tray. A nostalgic project, and still very much a work in progress.
olisa.io/os/xpLive
Open the live site
ReactFramer MotionZustandRetro OSAI ant colonyWork in progress
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Experience

Digital marketing & web designer · BDElite Insurance
2024 – Present
The person the underwriting, claims and operations teams come to when a process is slow or a screen gets in the way. I build the internal tools and interfaces they use all day, and I look after the marketing site that brings new business in.
Web designer · Citruslime
2023 – 2024
Designed and built the storefronts and tills that retail shops run on, across their EPOS and ecommerce platforms. The kind of work where one small detail decides whether a sale goes through.
Web / IT · Margaret Thelma International School
2020 – 2022
My first proper job, where I was the whole IT department. I ran the website, kept the internal systems going and fixed whatever broke. It is where I learned to own a problem from start to finish.