Batuhan KATIRCI

Batuhan KATIRCI

backend & appsec in istanbul

About

i'm a software engineer with strong application security background. my main focus is creating unique (and most of the time hacky) solutions for my or my companies' projects. when I felt burned out; I do bug bounty on private programs or give appsec consultancy to startups

Work Experience

2016 — Now
istanbul

BlindID is Turkey's biggest voice chat application. I built entire backend and cloud infrastructure for it. Currently my role is advisory.

tech stack: nodejs,mongodb,redis,lua,k8

2021 — 2023
Delaware

I'm CTO of Direcon which is first social audio analytics platform which currently supports Twitter Spaces, Clubhouse and Spotify Greenroom

2022 — 2023

Coniun is an nft power tool and ecosystem build for nft community.

2013 — 2014

i was curious about application security and started my appsec career here. after a while I wanted to persue multidisipline so I decided to leave

2013 — 2014
istanbul

worked part-time as jr creative software developer

2012 — 2013

created various social media related projects for university's needs

Education

2022 — Now
International Trade at Isik University
2015 — 2021
MIS at Anadolu University

just for having degree for 'various reasons'

2010 — 2012
Computer Engineering at Bahcesehir University
istanbul

dropout at second grade

Side Projects

2015

small tool for fetching instagram pictures from given twitter profile

2014

basic math game bot on Twitter

Speaking

Awards

2023
h1 - opensea from Opensea

around 25k bounty rewarded for finding vulnerable integration between their contract and api

2021
h1 - clubhouse from Clubhouse

found very critical vulnerability on their webrtc gateways, awarded $10k and created a small startup for their pro users (Direcon: Clubhouse and Twitter spaces analytics)

2021
h1 - trendyol from Trendyol (owned by Alibaba)

found around 25 vulnerabilities and collected $15k

2019
h1 - twitter & periscope from Twitter

found multiple critical vulnerabilities at Periscope and some data privacy issues on Twitter.
rewarded around $5k on hackerone

Features

2014

i created a simple twitter streaming bot for automatically reply most common typos in Turkish; that was really fun experience which got attention from press

Contact