Beyza Simsekoglu

Product engineer working at the seam between data, design, and decisions. Recently graduated from Cornell University (M.Eng.), where I built Mileo, an AI persona engine that lets product teams pressure test ideas before they ship.

Beyza Simsekoglu

Hello, I'm Beyza. I grew up design obsessed in a house with exactly one artist, my dad. By three I was sprawled on the floor drawing whatever was on Cartoon Network. By six, kindergarten gave me my first heartbreak. By ten, I was the only girl in my brother's friend group, parked in goal because nobody else wanted to be the goalkeeper.

I got into a university in Istanbul on a full scholarship I didn't really want, and cried about it for a week. Graduated top of my class without really trying, mostly because I'd already decided I was leaving. Three months later, at 22, I landed in San Francisco with three suitcases and a jar of Turkish olives.

First job: Popcorn, a fast delivery startup. Officially Category Manager; in practice, the kind of role that meant "do whatever's on fire today." First five employee. Watched it scale to 150 people and a $30M Series A, then watched it close. That one took a while to come out of. I'd loved it like a person.

So I built my own. LANS, a marketplace for coworking spaces, still live at lans.app. Raised $170K, hosted 30+ events with founders and investors across SF, hit 2,000+ App Store downloads in the first six months. Hard years. Cried plenty.

Then Cornell. This time one I'd applied for on purpose. Moved west coast to east. Spent a year that turned a school into my biggest family, graduated May 15, 2026.

Outside of all this: oil painting, piano, and long walks looking for the one good coffee in any new city.

based in
Bay Area
education
M.Eng., Cornell University
Data Science & Decision Analytics
built
Mileo · LANS
AI personas · coworking marketplace
speaks
Turkish · English
off the clock
painting · piano

What I'm up to.

This month

updated jul 2026

Paintings, walks, random.

see more →

Things I've shipped & led.

Mileo

product manager · cornell startup studio · 2025 to now

An AI persona engine that turns real customer data into named, consistent voice characters product teams can chat with, or watch debate, before pricing, feature, or messaging calls. Local first; data never leaves the machine.

LANS

co-founder, CEO & head of product · san francisco · 2023 to 2024

Matched coworking spaces with people seeking flexible, discounted seats. Raised $170K pre-seed, scaled to 2,000+ users with a 38% repeat rate, and ran the full lifecycle from discovery to A/B testing to launch.

AI Diagnostics

product manager · UC berkeley lab · 2025

Translated clinical and engineering needs into product requirements for bio-sensor chips, integrating time-series and generative models to lift diagnostic accuracy by 22% across four on-schedule release milestones.

Feed App

growth product manager · popcornvan · 2021 to 2022

First five employee at seed. Helped scale the team from 5 to 150 and $5M to a $30M Series A, owning vendor product strategy and data driven purchasing models that cut sourcing costs ~12% and lifted targeted sales 14%. Also designed a co-branded Fine & Raw chocolate distributed to 5,000+ Bay Area customers (see the design).

Before Popcorn.

Two suitcases, a jar of olives, and the twenty-two years that came before San Francisco. The piece I said I would never write.

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Starting a New Chapter.

My first year in San Francisco. Joining a five person startup, watching it grow to 150, and what I took away when it all ended.

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Let's talk.

Open to design-partner conversations for Mileo, product chats, or a good coffee in New York or the Bay.